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Posted to commits@impala.apache.org by mi...@apache.org on 2018/05/01 21:30:01 UTC
[01/15] impala git commit: [DOCS] Add Impala docs from branch 2.x
Repository: impala
Updated Branches:
refs/heads/asf-site 47532c3e8 -> 592fd85d7
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_tutorial.html
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diff --git a/docs/build/html/topics/impala_tutorial.html b/docs/build/html/topics/impala_tutorial.html
index 66c408d..d807509 100644
--- a/docs/build/html/topics/impala_tutorial.html
+++ b/docs/build/html/topics/impala_tutorial.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" cont
ent="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="tutorial"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Tutorials</title></head><body id="tutorial"><main role="main"><article role="article" aria-labelledby="tutorial__tutorials">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" cont
ent="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="tutorial"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Tutorials</title></head><body id="tutorial"><main role="main"><article role="article" aria-labelledby="tutorial__tutorials">
<h1 class="title topictitle1" id="tutorial__tutorials">Impala Tutorials</h1>
@@ -96,7 +96,7 @@ Starting Impala Shell without Kerberos authentication
Welcome to the Impala shell. Press TAB twice to see a list of available commands.
...
<span class="ph">(Shell
- build version: Impala Shell v2.8.x (<var class="keyword varname">hash</var>) built on
+ build version: Impala Shell v2.12.x (<var class="keyword varname">hash</var>) built on
<var class="keyword varname">date</var>)</span>
[localhost:21000] > select version();
+-------------------------------------------
@@ -1480,12 +1480,12 @@ queries and perform some copy and transform operations into other tables.
Starting Impala Shell without Kerberos authentication
Connected to localhost:21000
-<span class="ph">Server version: impalad version 2.8.x (build
+<span class="ph">Server version: impalad version 2.12.x (build
x.y.z)</span>
Welcome to the Impala shell. Press TAB twice to see a list of available commands.
...
<span class="ph">(Shell
- build version: Impala Shell v2.8.x (<var class="keyword varname">hash</var>) built on
+ build version: Impala Shell v2.12.x (<var class="keyword varname">hash</var>) built on
<var class="keyword varname">date</var>)</span>
[localhost:21000] > create database airline_data;
[localhost:21000] > use airline_data;
@@ -1903,12 +1903,12 @@ Goodbye jrussell
$ impala-shell -i localhost -B -d airline_data;
Starting Impala Shell without Kerberos authentication
Connected to localhost:21000
-<span class="ph">Server version: impalad version 2.8.x (build
+<span class="ph">Server version: impalad version 2.12.x (build
x.y.z)</span>
Welcome to the Impala shell. Press TAB twice to see a list of available commands.
...
<span class="ph">(Shell
- build version: Impala Shell v2.8.x (<var class="keyword varname">hash</var>) built on
+ build version: Impala Shell v2.12.x (<var class="keyword varname">hash</var>) built on
<var class="keyword varname">date</var>)</span>
[localhost:21000] > show create table airlines_external;
"CREATE EXTERNAL TABLE airline_data.airlines_external (
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_txtfile.html
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diff --git a/docs/build/html/topics/impala_txtfile.html b/docs/build/html/topics/impala_txtfile.html
index 435bb9d..c056e52 100644
--- a/docs/build/html/topics/impala_txtfile.html
+++ b/docs/build/html/topics/impala_txtfile.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_file_formats.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impa
la 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="txtfile"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Using Text Data Files with Impala Tables</title></head><body id="txtfile"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_file_formats.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impa
la 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="txtfile"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Using Text Data Files with Impala Tables</title></head><body id="txtfile"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Using Text Data Files with Impala Tables</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_udf.html
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diff --git a/docs/build/html/topics/impala_udf.html b/docs/build/html/topics/impala_udf.html
index e86b360..45fb75d 100644
--- a/docs/build/html/topics/impala_udf.html
+++ b/docs/build/html/topics/impala_udf.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Im
pala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="ve
rsion" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="udfs"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala User-Defined Functions (UDFs)</title></head><body id="udfs"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Im
pala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="ve
rsion" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="udfs"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala User-Defined Functions (UDFs)</title></head><body id="udfs"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Impala User-Defined Functions (UDFs)</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_union.html
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diff --git a/docs/build/html/topics/impala_union.html b/docs/build/html/topics/impala_union.html
index 75e32e4..490cd8e 100644
--- a/docs/build/html/topics/impala_union.html
+++ b/docs/build/html/topics/impala_union.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_select.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="union"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>UNION Clause</title></head><body id="union"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_select.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="union"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>UNION Clause</title></head><body id="union"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">UNION Clause</h1>
@@ -43,7 +43,7 @@
</p>
<p class="p">
- First, we set up some sample data, including duplicate <code class="ph codeph">1</code> values.
+ First, set up some sample data, including duplicate <code class="ph codeph">1</code> values:
</p>
<pre class="pre codeblock"><code>[localhost:21000] > create table few_ints (x int);
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_update.html
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diff --git a/docs/build/html/topics/impala_update.html b/docs/build/html/topics/impala_update.html
index 772e0d0..d8957f0 100644
--- a/docs/build/html/topics/impala_update.html
+++ b/docs/build/html/topics/impala_update.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="update"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>UPDATE Statement (Impala 2.8 or higher only)</title></head><body id="update"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="update"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>UPDATE Statement (Impala 2.8 or higher only)</title></head><body id="update"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">UPDATE Statement (<span class="keyword">Impala 2.8</span> or higher only)</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_upgrading.html
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diff --git a/docs/build/html/topics/impala_upgrading.html b/docs/build/html/topics/impala_upgrading.html
index 7df5792..55afb1e 100644
--- a/docs/build/html/topics/impala_upgrading.html
+++ b/docs/build/html/topics/impala_upgrading.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="upgrading"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Upgrading Impala</title></head><body id="upgrading"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="upgrading"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Upgrading Impala</title></head><body id="upgrading"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Upgrading Impala</h1>
@@ -112,4 +112,25 @@ $ ps ax | grep [i]mpalad
</div>
</div>
</article>
+ <article class="topic concept nested1" aria-labelledby="ariaid-title3" id="upgrading__concept_a2p_szq_jdb">
+ <h2 class="title topictitle2" id="ariaid-title3">Impala Upgrade Considerations</h2>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title4" id="concept_a2p_szq_jdb__concept_mkn_ygr_jdb">
+ <h3 class="title topictitle3" id="ariaid-title4">Default Setting Changes</h3>
+ <div class="body conbody">
+ <table class="simpletable frame-all" id="concept_mkn_ygr_jdb__simpletable_x55_ghr_jdb"><col style="width:33.33333333333333%"><col style="width:33.33333333333333%"><col style="width:33.33333333333333%"><thead><tr class="sthead">
+ <th class="stentry" id="concept_mkn_ygr_jdb__simpletable_x55_ghr_jdb__stentry__1">Release Changed</th>
+ <th class="stentry" id="concept_mkn_ygr_jdb__simpletable_x55_ghr_jdb__stentry__2">Setting</th>
+ <th class="stentry" id="concept_mkn_ygr_jdb__simpletable_x55_ghr_jdb__stentry__3">Default Value</th>
+ </tr></thead><tbody><tr class="strow">
+ <td class="stentry" headers="concept_mkn_ygr_jdb__simpletable_x55_ghr_jdb__stentry__1"><span class="keyword">Impala 2.12</span></td>
+ <td class="stentry" headers="concept_mkn_ygr_jdb__simpletable_x55_ghr_jdb__stentry__2"><code class="ph codeph">compact_catalog_topic</code></td>
+ <td class="stentry" headers="concept_mkn_ygr_jdb__simpletable_x55_ghr_jdb__stentry__3"><code class="ph codeph">true</code></td>
+ </tr><tr class="strow">
+ <td class="stentry" headers="concept_mkn_ygr_jdb__simpletable_x55_ghr_jdb__stentry__1"><span class="keyword">Impala 2.12</span></td>
+ <td class="stentry" headers="concept_mkn_ygr_jdb__simpletable_x55_ghr_jdb__stentry__2"><code class="ph codeph">max_cached_file_handle</code></td>
+ <td class="stentry" headers="concept_mkn_ygr_jdb__simpletable_x55_ghr_jdb__stentry__3"><code class="ph codeph">20000</code></td>
+ </tr></tbody></table>
+ </div>
+ </article>
+ </article>
</article></main></body></html>
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_upsert.html
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diff --git a/docs/build/html/topics/impala_upsert.html b/docs/build/html/topics/impala_upsert.html
index e2a1b20..2a366e7 100644
--- a/docs/build/html/topics/impala_upsert.html
+++ b/docs/build/html/topics/impala_upsert.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="upsert"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>UPSERT Statement (Impala 2.8 or higher only)</title></head><body id="upsert"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="upsert"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>UPSERT Statement (Impala 2.8 or higher only)</title></head><body id="upsert"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">UPSERT Statement (<span class="keyword">Impala 2.8</span> or higher only)</h1>
@@ -41,7 +41,7 @@
</p>
<pre class="pre codeblock"><code>
-UPSERT INTO [TABLE] [<var class="keyword varname">db_name</var>.]<var class="keyword varname">table_name</var>
+UPSERT <span class="ph">[<var class="keyword varname">hint_clause</var>]</span> INTO [TABLE] [<var class="keyword varname">db_name</var>.]<var class="keyword varname">table_name</var>
[(<var class="keyword varname">column_list</var>)]
{
[<var class="keyword varname">hint_clause</var>] <var class="keyword varname">select_statement</var>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_use.html
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diff --git a/docs/build/html/topics/impala_use.html b/docs/build/html/topics/impala_use.html
index 9253478..1439f73 100644
--- a/docs/build/html/topics/impala_use.html
+++ b/docs/build/html/topics/impala_use.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="use"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>USE Statement</title></head><body id="use"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="use"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>USE Statement</title></head><body id="use"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">USE Statement</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_v_cpu_cores.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_v_cpu_cores.html b/docs/build/html/topics/impala_v_cpu_cores.html
index 4067a0e..973bc74 100644
--- a/docs/build/html/topics/impala_v_cpu_cores.html
+++ b/docs/build/html/topics/impala_v_cpu_cores.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="v_cpu_cores"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>V_CPU_CORES Query Option</title></head><body id="v_cpu_cores"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="v_cpu_cores"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>V_CPU_CORES Query Option</title></head><body id="v_cpu_cores"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">V_CPU_CORES Query Option</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_varchar.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_varchar.html b/docs/build/html/topics/impala_varchar.html
index 02b878b..a034d52 100644
--- a/docs/build/html/topics/impala_varchar.html
+++ b/docs/build/html/topics/impala_varchar.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="varchar"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>VARCHAR Data Type (Impala 2.0 or higher only)</title></head><body id="varchar"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="varchar"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>VARCHAR Data Type (Impala 2.0 or higher only)</title></head><body id="varchar"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">VARCHAR Data Type (<span class="keyword">Impala 2.0</span> or higher only)</h1>
@@ -130,7 +130,7 @@
<strong class="ph b">Kudu considerations:</strong>
</p>
<p class="p">
- Currently, the data types <code class="ph codeph">DECIMAL</code>, <code class="ph codeph">CHAR</code>, <code class="ph codeph">VARCHAR</code>,
+ Currently, the data types <code class="ph codeph">CHAR</code>, <code class="ph codeph">VARCHAR</code>,
<code class="ph codeph">ARRAY</code>, <code class="ph codeph">MAP</code>, and <code class="ph codeph">STRUCT</code> cannot be used with Kudu tables.
</p>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_variance.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_variance.html b/docs/build/html/topics/impala_variance.html
index 32c81ee..fbffaca 100644
--- a/docs/build/html/topics/impala_variance.html
+++ b/docs/build/html/topics/impala_variance.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_aggregate_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="variance"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>VARIANCE, VARIANCE_SAMP, VARIANCE_POP, VAR_SAMP, VAR_POP Functions</title></head><body id="variance"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_aggregate_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="variance"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>VARIANCE, VARIANCE_SAMP, VARIANCE_POP, VAR_SAMP, VAR_POP Functions</title></head><body id="variance"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">VARIANCE, VARIANCE_SAMP, VARIANCE_POP, VAR_SAMP, VAR_POP Functions</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_views.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_views.html b/docs/build/html/topics/impala_views.html
index a78d457..2513138 100644
--- a/docs/build/html/topics/impala_views.html
+++ b/docs/build/html/topics/impala_views.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_schema_objects.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="views"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Overview of Impala Views</title></head><body id="views"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_schema_objects.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="views"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Overview of Impala Views</title></head><body id="views"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Overview of Impala Views</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_webui.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_webui.html b/docs/build/html/topics/impala_webui.html
index 3dd00e8..8171e66 100644
--- a/docs/build/html/topics/impala_webui.html
+++ b/docs/build/html/topics/impala_webui.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_troubleshooting.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="webui"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Web User Interface for Debugging</title></head><body id="webui"><main role="main"><article role="article" aria-labelledby="webui__webui_title">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_troubleshooting.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="webui"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Web User Interface for Debugging</title></head><body id="webui"><main role="main"><article role="article" aria-labelledby="webui__webui_title">
<h1 class="title topictitle1" id="webui__webui_title">Impala Web User Interface for Debugging</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_with.html
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diff --git a/docs/build/html/topics/impala_with.html b/docs/build/html/topics/impala_with.html
index 9206bb0..8254715 100644
--- a/docs/build/html/topics/impala_with.html
+++ b/docs/build/html/topics/impala_with.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_select.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="with"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>WITH Clause</title></head><body id="with"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_select.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="with"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>WITH Clause</title></head><body id="with"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">WITH Clause</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/impala-2.12.pdf
----------------------------------------------------------------------
diff --git a/docs/build/impala-2.12.pdf b/docs/build/impala-2.12.pdf
new file mode 100644
index 0000000..8de5ba4
Binary files /dev/null and b/docs/build/impala-2.12.pdf differ
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/impala-docs.html
----------------------------------------------------------------------
diff --git a/impala-docs.html b/impala-docs.html
index d7f8b3c..046c288 100644
--- a/impala-docs.html
+++ b/impala-docs.html
@@ -125,11 +125,11 @@
<div class="row">
<div class="span12"><h3>Latest Release</h3>
- <p>Impala 2.11
+ <p>Impala 2.12
<ul>
- <li><a href="docs/changelog-2.11.html">Impala 2.11 Change Log</a></li>
- <li><a href="docs/build/html/index.html">HTML Documentation for Impala 2.11</a></li>
- <li><a href="docs/build/impala-2.11.pdf">PDF Documentation for Impala 2.11</a></li>
+ <li><a href="docs/changelog-2.12.html">Impala 2.12 Change Log</a></li>
+ <li><a href="docs/build/html/index.html">HTML Documentation for Impala 2.12</a></li>
+ <li><a href="docs/build/impala-2.12.pdf">PDF Documentation for Impala 2.12</a></li>
</ul>
</p>
</div>
@@ -137,6 +137,12 @@
<div class="row">
<div class="span12"><h3>Older Releases</h3>
+ <p>Impala 2.11
+ <ul>
+ <li><a href="docs/changelog-2.11.html">Impala 2.11 Change Log</a></li>
+ <li><a href="docs/build/impala-2.11.pdf">PDF Documentation for Impala 2.11</a></li>
+ </ul>
+ </p>
<p>Impala 2.10
<ul>
<li><a href="docs/changelog-2.10.html">Impala 2.10 Change Log</a></li>
[15/15] impala git commit: [DOCS] Add Impala docs from branch 2.x
Posted by mi...@apache.org.
[DOCS] Add Impala docs from branch 2.x
Add Impala docs from branch master, commit hash:
9a5a63834ab9f13facd6b1972b5742fc250dcdf9
Change-Id: I4e94fb12984974e280d3c6aeab384c1021b7f76a
Reviewed-on: http://gerrit.cloudera.org:8080/10258
Reviewed-by: Michael Brown <mi...@cloudera.com>
Tested-by: Alex Rodoni <ar...@cloudera.com>
Project: http://git-wip-us.apache.org/repos/asf/impala/repo
Commit: http://git-wip-us.apache.org/repos/asf/impala/commit/592fd85d
Tree: http://git-wip-us.apache.org/repos/asf/impala/tree/592fd85d
Diff: http://git-wip-us.apache.org/repos/asf/impala/diff/592fd85d
Branch: refs/heads/asf-site
Commit: 592fd85d70f4032d38efae061a7377f70d71d64f
Parents: 47532c3
Author: Alex Rodoni <ar...@cloudera.com>
Authored: Tue May 1 12:03:15 2018 -0700
Committer: Alex Rodoni <ar...@cloudera.com>
Committed: Tue May 1 21:28:48 2018 +0000
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docs/build/html/index.html | 2 +-
.../impala_abort_on_default_limit_exceeded.html | 2 +-
.../html/topics/impala_abort_on_error.html | 2 +-
docs/build/html/topics/impala_adls.html | 2 +-
docs/build/html/topics/impala_admin.html | 2 +-
docs/build/html/topics/impala_admission.html | 18 +-
.../html/topics/impala_aggregate_functions.html | 2 +-
docs/build/html/topics/impala_aliases.html | 2 +-
.../impala_allow_unsupported_formats.html | 2 +-
docs/build/html/topics/impala_alter_table.html | 8 +-
docs/build/html/topics/impala_alter_view.html | 2 +-
.../html/topics/impala_analytic_functions.html | 8 +-
.../html/topics/impala_appx_count_distinct.html | 2 +-
docs/build/html/topics/impala_appx_median.html | 2 +-
docs/build/html/topics/impala_array.html | 6 +-
docs/build/html/topics/impala_auditing.html | 2 +-
.../html/topics/impala_authentication.html | 2 +-
.../build/html/topics/impala_authorization.html | 2 +-
docs/build/html/topics/impala_avg.html | 2 +-
docs/build/html/topics/impala_avro.html | 2 +-
docs/build/html/topics/impala_batch_size.html | 2 +-
docs/build/html/topics/impala_bigint.html | 10 +-
.../build/html/topics/impala_bit_functions.html | 2 +-
docs/build/html/topics/impala_boolean.html | 2 +-
docs/build/html/topics/impala_breakpad.html | 2 +-
.../html/topics/impala_buffer_pool_limit.html | 2 +-
docs/build/html/topics/impala_char.html | 4 +-
.../html/topics/impala_cluster_sizing.html | 318 ----
docs/build/html/topics/impala_comments.html | 2 +-
.../build/html/topics/impala_complex_types.html | 2 +-
docs/build/html/topics/impala_components.html | 45 +-
.../html/topics/impala_compression_codec.html | 2 +-
.../build/html/topics/impala_compute_stats.html | 155 +-
.../impala_compute_stats_min_sample_size.html | 23 +
docs/build/html/topics/impala_concepts.html | 2 +-
.../topics/impala_conditional_functions.html | 2 +-
docs/build/html/topics/impala_config.html | 2 +-
.../html/topics/impala_config_options.html | 43 +-
.../html/topics/impala_config_performance.html | 2 +-
docs/build/html/topics/impala_connecting.html | 4 +-
.../topics/impala_conversion_functions.html | 4 +-
docs/build/html/topics/impala_count.html | 2 +-
.../html/topics/impala_create_database.html | 2 +-
.../html/topics/impala_create_function.html | 2 +-
docs/build/html/topics/impala_create_role.html | 2 +-
docs/build/html/topics/impala_create_table.html | 2 +-
docs/build/html/topics/impala_create_view.html | 2 +-
docs/build/html/topics/impala_databases.html | 2 +-
docs/build/html/topics/impala_datatypes.html | 2 +-
.../html/topics/impala_datetime_functions.html | 105 +-
docs/build/html/topics/impala_ddl.html | 2 +-
docs/build/html/topics/impala_debug_action.html | 2 +-
docs/build/html/topics/impala_decimal.html | 12 +-
docs/build/html/topics/impala_decimal_v2.html | 2 +-
.../impala_default_join_distribution_mode.html | 2 +-
.../topics/impala_default_order_by_limit.html | 2 +-
.../impala_default_spillable_buffer_size.html | 2 +-
docs/build/html/topics/impala_delegation.html | 2 +-
docs/build/html/topics/impala_delete.html | 2 +-
docs/build/html/topics/impala_describe.html | 2 +-
docs/build/html/topics/impala_development.html | 2 +-
.../html/topics/impala_disable_codegen.html | 2 +-
.../impala_disable_row_runtime_filtering.html | 2 +-
...mpala_disable_streaming_preaggregations.html | 2 +-
.../topics/impala_disable_unsafe_spills.html | 2 +-
docs/build/html/topics/impala_disk_space.html | 2 +-
docs/build/html/topics/impala_distinct.html | 2 +-
docs/build/html/topics/impala_dml.html | 2 +-
docs/build/html/topics/impala_double.html | 10 +-
.../build/html/topics/impala_drop_database.html | 2 +-
.../build/html/topics/impala_drop_function.html | 2 +-
docs/build/html/topics/impala_drop_role.html | 2 +-
docs/build/html/topics/impala_drop_stats.html | 2 +-
docs/build/html/topics/impala_drop_table.html | 2 +-
docs/build/html/topics/impala_drop_view.html | 2 +-
.../impala_exec_single_node_rows_threshold.html | 2 +-
.../html/topics/impala_exec_time_limit_s.html | 70 +
docs/build/html/topics/impala_explain.html | 2 +-
.../build/html/topics/impala_explain_level.html | 2 +-
docs/build/html/topics/impala_explain_plan.html | 2 +-
docs/build/html/topics/impala_faq.html | 2 +-
docs/build/html/topics/impala_file_formats.html | 2 +-
docs/build/html/topics/impala_fixed_issues.html | 1462 ++++++++---------
docs/build/html/topics/impala_float.html | 10 +-
docs/build/html/topics/impala_functions.html | 2 +-
.../html/topics/impala_functions_overview.html | 2 +-
docs/build/html/topics/impala_grant.html | 38 +-
docs/build/html/topics/impala_group_by.html | 2 +-
docs/build/html/topics/impala_group_concat.html | 2 +-
docs/build/html/topics/impala_hadoop.html | 2 +-
docs/build/html/topics/impala_having.html | 2 +-
docs/build/html/topics/impala_hbase.html | 2 +-
.../html/topics/impala_hbase_cache_blocks.html | 2 +-
.../build/html/topics/impala_hbase_caching.html | 2 +-
docs/build/html/topics/impala_hints.html | 291 ++--
docs/build/html/topics/impala_identifiers.html | 2 +-
docs/build/html/topics/impala_impala_shell.html | 2 +-
.../topics/impala_incompatible_changes.html | 156 +-
docs/build/html/topics/impala_insert.html | 257 ++-
docs/build/html/topics/impala_install.html | 2 +-
docs/build/html/topics/impala_int.html | 10 +-
docs/build/html/topics/impala_intro.html | 2 +-
.../html/topics/impala_invalidate_metadata.html | 12 +-
docs/build/html/topics/impala_isilon.html | 2 +-
docs/build/html/topics/impala_jdbc.html | 2 +-
docs/build/html/topics/impala_joins.html | 4 +-
docs/build/html/topics/impala_kerberos.html | 2 +-
docs/build/html/topics/impala_known_issues.html | 1536 ++++++++++++------
docs/build/html/topics/impala_kudu.html | 47 +-
docs/build/html/topics/impala_langref.html | 2 +-
docs/build/html/topics/impala_langref_sql.html | 4 +-
.../html/topics/impala_langref_unsupported.html | 10 +-
docs/build/html/topics/impala_ldap.html | 2 +-
docs/build/html/topics/impala_limit.html | 2 +-
docs/build/html/topics/impala_lineage.html | 2 +-
docs/build/html/topics/impala_literals.html | 19 +-
.../build/html/topics/impala_live_progress.html | 2 +-
docs/build/html/topics/impala_live_summary.html | 2 +-
docs/build/html/topics/impala_load_data.html | 2 +-
docs/build/html/topics/impala_logging.html | 2 +-
docs/build/html/topics/impala_map.html | 6 +-
.../html/topics/impala_math_functions.html | 79 +-
docs/build/html/topics/impala_max.html | 2 +-
docs/build/html/topics/impala_max_errors.html | 2 +-
.../html/topics/impala_max_io_buffers.html | 2 +-
.../topics/impala_max_num_runtime_filters.html | 2 +-
docs/build/html/topics/impala_max_row_size.html | 2 +-
.../topics/impala_max_scan_range_length.html | 2 +-
docs/build/html/topics/impala_mem_limit.html | 2 +-
docs/build/html/topics/impala_min.html | 2 +-
.../impala_min_spillable_buffer_size.html | 2 +-
.../html/topics/impala_misc_functions.html | 2 +-
.../html/topics/impala_mixed_security.html | 2 +-
docs/build/html/topics/impala_mt_dop.html | 2 +-
docs/build/html/topics/impala_ndv.html | 2 +-
docs/build/html/topics/impala_new_features.html | 151 +-
docs/build/html/topics/impala_num_nodes.html | 2 +-
.../html/topics/impala_num_scanner_threads.html | 2 +-
docs/build/html/topics/impala_odbc.html | 2 +-
docs/build/html/topics/impala_offset.html | 2 +-
docs/build/html/topics/impala_operators.html | 2 +-
.../impala_optimize_partition_key_scans.html | 2 +-
docs/build/html/topics/impala_order_by.html | 2 +-
docs/build/html/topics/impala_parquet.html | 2 +-
.../impala_parquet_annotate_strings_utf8.html | 2 +-
.../impala_parquet_compression_codec.html | 2 +-
...pala_parquet_fallback_schema_resolution.html | 25 +-
.../html/topics/impala_parquet_file_size.html | 2 +-
docs/build/html/topics/impala_partitioning.html | 16 +-
.../html/topics/impala_perf_benchmarking.html | 2 +-
.../build/html/topics/impala_perf_cookbook.html | 2 +-
.../html/topics/impala_perf_hdfs_caching.html | 2 +-
docs/build/html/topics/impala_perf_joins.html | 4 +-
.../html/topics/impala_perf_resources.html | 2 +-
docs/build/html/topics/impala_perf_skew.html | 2 +-
docs/build/html/topics/impala_perf_stats.html | 956 ++++++-----
docs/build/html/topics/impala_perf_testing.html | 2 +-
docs/build/html/topics/impala_performance.html | 2 +-
docs/build/html/topics/impala_planning.html | 4 +-
docs/build/html/topics/impala_porting.html | 2 +-
docs/build/html/topics/impala_ports.html | 2 +-
.../build/html/topics/impala_prefetch_mode.html | 2 +-
docs/build/html/topics/impala_prereqs.html | 2 +-
docs/build/html/topics/impala_processes.html | 2 +-
docs/build/html/topics/impala_proxy.html | 192 ++-
.../build/html/topics/impala_query_options.html | 4 +-
.../html/topics/impala_query_timeout_s.html | 2 +-
docs/build/html/topics/impala_rcfile.html | 2 +-
docs/build/html/topics/impala_real.html | 2 +-
docs/build/html/topics/impala_refresh.html | 2 +-
.../build/html/topics/impala_release_notes.html | 6 +-
docs/build/html/topics/impala_relnotes.html | 6 +-
.../html/topics/impala_replica_preference.html | 45 +-
docs/build/html/topics/impala_request_pool.html | 2 +-
.../impala_reservation_request_timeout.html | 2 +-
.../html/topics/impala_reserved_words.html | 3 +-
.../html/topics/impala_resource_management.html | 2 +-
docs/build/html/topics/impala_revoke.html | 38 +-
.../impala_runtime_bloom_filter_size.html | 2 +-
.../topics/impala_runtime_filter_max_size.html | 2 +-
.../topics/impala_runtime_filter_min_size.html | 2 +-
.../html/topics/impala_runtime_filter_mode.html | 2 +-
.../impala_runtime_filter_wait_time_ms.html | 2 +-
.../html/topics/impala_runtime_filtering.html | 4 +-
docs/build/html/topics/impala_s3.html | 2 +-
.../topics/impala_s3_skip_insert_staging.html | 2 +-
docs/build/html/topics/impala_scalability.html | 34 +-
.../impala_scan_node_codegen_threshold.html | 2 +-
.../topics/impala_schedule_random_replica.html | 2 +-
.../build/html/topics/impala_schema_design.html | 2 +-
.../html/topics/impala_schema_objects.html | 2 +-
.../build/html/topics/impala_scratch_limit.html | 2 +-
docs/build/html/topics/impala_security.html | 2 +-
.../html/topics/impala_security_files.html | 2 +-
.../html/topics/impala_security_guidelines.html | 2 +-
.../html/topics/impala_security_install.html | 2 +-
.../html/topics/impala_security_metastore.html | 2 +-
.../html/topics/impala_security_webui.html | 2 +-
docs/build/html/topics/impala_select.html | 4 +-
docs/build/html/topics/impala_seqfile.html | 2 +-
docs/build/html/topics/impala_set.html | 2 +-
.../html/topics/impala_shell_commands.html | 2 +-
.../build/html/topics/impala_shell_options.html | 31 +-
.../topics/impala_shell_running_commands.html | 2 +-
docs/build/html/topics/impala_show.html | 2 +-
.../topics/impala_shuffle_distinct_exprs.html | 37 +
docs/build/html/topics/impala_smallint.html | 10 +-
docs/build/html/topics/impala_ssl.html | 12 +-
docs/build/html/topics/impala_stddev.html | 2 +-
docs/build/html/topics/impala_string.html | 2 +-
.../html/topics/impala_string_functions.html | 135 +-
docs/build/html/topics/impala_struct.html | 6 +-
docs/build/html/topics/impala_subqueries.html | 2 +-
docs/build/html/topics/impala_sum.html | 2 +-
.../html/topics/impala_support_start_over.html | 2 +-
docs/build/html/topics/impala_sync_ddl.html | 2 +-
docs/build/html/topics/impala_tables.html | 2 +-
docs/build/html/topics/impala_tablesample.html | 8 +-
docs/build/html/topics/impala_timeouts.html | 2 +-
docs/build/html/topics/impala_timestamp.html | 283 ++--
docs/build/html/topics/impala_tinyint.html | 10 +-
.../html/topics/impala_troubleshooting.html | 2 +-
.../html/topics/impala_truncate_table.html | 2 +-
docs/build/html/topics/impala_tutorial.html | 12 +-
docs/build/html/topics/impala_txtfile.html | 2 +-
docs/build/html/topics/impala_udf.html | 2 +-
docs/build/html/topics/impala_union.html | 4 +-
docs/build/html/topics/impala_update.html | 2 +-
docs/build/html/topics/impala_upgrading.html | 23 +-
docs/build/html/topics/impala_upsert.html | 4 +-
docs/build/html/topics/impala_use.html | 2 +-
docs/build/html/topics/impala_v_cpu_cores.html | 2 +-
docs/build/html/topics/impala_varchar.html | 4 +-
docs/build/html/topics/impala_variance.html | 2 +-
docs/build/html/topics/impala_views.html | 2 +-
docs/build/html/topics/impala_webui.html | 2 +-
docs/build/html/topics/impala_with.html | 2 +-
docs/build/impala-2.12.pdf | Bin 0 -> 3917126 bytes
impala-docs.html | 14 +-
239 files changed, 4305 insertions(+), 2912 deletions(-)
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http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/index.html
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diff --git a/docs/build/html/index.html b/docs/build/html/index.html
index 166a0f4..2393fa9 100644
--- a/docs/build/html/index.html
+++ b/docs/build/html/index.html
@@ -1,3 +1,3 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="map"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="impala"><link rel="stylesheet" type="text/css" href="commonltr.css"><title>Apache Impala Guide</title></head><body id="impala"><h1 class="title topictitle1">Apache Impala Guide</h1><nav><ul class="map"><li class="topicref"><a href="topics/impala_intro.html">Introducing Apache Impala</a></li><li class="topicref"><a href="topics/impala_concepts.html">Concepts and Architecture</a><ul><li class="topicref"><a href="topics/impala_components.html">Components</a></li><li class="topicref"><a href="topics/impala_development.html">Developing Applications</a></li><li class="topicref"><a href="topics/impala_hadoop.html">Role in the Hadoop Ecosystem</a></li></ul></li><li
class="topicref"><a href="topics/impala_planning.html">Deployment Planning</a><ul><li class="topicref"><a href="topics/impala_prereqs.html#prereqs">Requirements</a></li><li class="topicref"><a href="topics/impala_cluster_sizing.html">Cluster Sizing</a></li><li class="topicref"><a href="topics/impala_schema_design.html">Designing Schemas</a></li></ul></li><li class="topicref"><a href="topics/impala_install.html#install">Installing Impala</a></li><li class="topicref"><a href="topics/impala_config.html">Managing Impala</a><ul><li class="topicref"><a href="topics/impala_config_performance.html">Post-Installation Configuration for Impala</a></li><li class="topicref"><a href="topics/impala_odbc.html">Configuring Impala to Work with ODBC</a></li><li class="topicref"><a href="topics/impala_jdbc.html">Configuring Impala to Work with JDBC</a></li></ul></li><li class="topicref"><a href="topics/impala_upgrading.html">Upgrading Impala</a></li><li class="topicref"><a href="topics/impala_processes
.html">Starting Impala</a><ul><li class="topicref"><a href="topics/impala_config_options.html">Modifying Impala Startup Options</a></li></ul></li><li class="topicref"><a href="topics/impala_tutorial.html">Tutorials</a></li><li class="topicref"><a href="topics/impala_admin.html">Administration</a><ul><li class="topicref"><a href="topics/impala_admission.html">Admission Control and Query Queuing</a></li><li class="topicref"><a href="topics/impala_resource_management.html">Resource Management for Impala</a></li><li class="topicref"><a href="topics/impala_timeouts.html">Setting Timeouts</a></li><li class="topicref"><a href="topics/impala_proxy.html">Load-Balancing Proxy for HA</a></li><li class="topicref"><a href="topics/impala_disk_space.html">Managing Disk Space</a></li></ul></li><li class="topicref"><a href="topics/impala_security.html">Impala Security</a><ul><li class="topicref"><a href="topics/impala_security_guidelines.html">Security Guidelines for Impala</a></li><li class="topicr
ef"><a href="topics/impala_security_files.html">Securing Impala Data and Log Files</a></li><li class="topicref"><a href="topics/impala_security_install.html">Installation Considerations for Impala Security</a></li><li class="topicref"><a href="topics/impala_security_metastore.html">Securing the Hive Metastore Database</a></li><li class="topicref"><a href="topics/impala_security_webui.html">Securing the Impala Web User Interface</a></li><li class="topicref"><a href="topics/impala_ssl.html">Configuring TLS/SSL for Impala</a></li><li class="topicref"><a href="topics/impala_authorization.html">Enabling Sentry Authorization for Impala</a></li><li class="topicref"><a href="topics/impala_authentication.html">Impala Authentication</a><ul><li class="topicref"><a href="topics/impala_kerberos.html">Enabling Kerberos Authentication for Impala</a></li><li class="topicref"><a href="topics/impala_ldap.html">Enabling LDAP Authentication for Impala</a></li><li class="topicref"><a href="topics/impala
_mixed_security.html">Using Multiple Authentication Methods with Impala</a></li><li class="topicref"><a href="topics/impala_delegation.html">Configuring Impala Delegation for Hue and BI Tools</a></li></ul></li><li class="topicref"><a href="topics/impala_auditing.html">Auditing</a></li><li class="topicref"><a href="topics/impala_lineage.html">Viewing Lineage Info</a></li></ul></li><li class="topicref"><a href="topics/impala_langref.html">SQL Reference</a><ul><li class="topicref"><a href="topics/impala_comments.html">Comments</a></li><li class="topicref"><a href="topics/impala_datatypes.html">Data Types</a><ul><li class="topicref"><a href="topics/impala_array.html">ARRAY Complex Type (Impala 2.3 or higher only)</a></li><li class="topicref"><a href="topics/impala_bigint.html">BIGINT</a></li><li class="topicref"><a href="topics/impala_boolean.html">BOOLEAN</a></li><li class="topicref"><a href="topics/impala_char.html">CHAR</a></li><li class="topicref"><a href="topics/impala_decimal.html
">DECIMAL</a></li><li class="topicref"><a href="topics/impala_double.html">DOUBLE</a></li><li class="topicref"><a href="topics/impala_float.html">FLOAT</a></li><li class="topicref"><a href="topics/impala_int.html">INT</a></li><li class="topicref"><a href="topics/impala_map.html">MAP Complex Type (Impala 2.3 or higher only)</a></li><li class="topicref"><a href="topics/impala_real.html">REAL</a></li><li class="topicref"><a href="topics/impala_smallint.html">SMALLINT</a></li><li class="topicref"><a href="topics/impala_string.html">STRING</a></li><li class="topicref"><a href="topics/impala_struct.html">STRUCT Complex Type (Impala 2.3 or higher only)</a></li><li class="topicref"><a href="topics/impala_timestamp.html">TIMESTAMP</a></li><li class="topicref"><a href="topics/impala_tinyint.html">TINYINT</a></li><li class="topicref"><a href="topics/impala_varchar.html">VARCHAR</a></li><li class="topicref"><a href="topics/impala_complex_types.html">Complex Types (Impala 2.3 or higher only)</a>
</li></ul></li><li class="topicref"><a href="topics/impala_literals.html">Literals</a></li><li class="topicref"><a href="topics/impala_operators.html">SQL Operators</a></li><li class="topicref"><a href="topics/impala_schema_objects.html">Schema Objects and Object Names</a><ul><li class="topicref"><a href="topics/impala_aliases.html">Aliases</a></li><li class="topicref"><a href="topics/impala_databases.html">Databases</a></li><li class="topicref"><a href="topics/impala_functions_overview.html">Functions</a></li><li class="topicref"><a href="topics/impala_identifiers.html">Identifiers</a></li><li class="topicref"><a href="topics/impala_tables.html">Tables</a></li><li class="topicref"><a href="topics/impala_views.html">Views</a></li></ul></li><li class="topicref"><a href="topics/impala_langref_sql.html">SQL Statements</a><ul><li class="topicref"><a href="topics/impala_ddl.html">DDL Statements</a></li><li class="topicref"><a href="topics/impala_dml.html">DML Statements</a></li><li class
="topicref"><a href="topics/impala_alter_table.html">ALTER TABLE</a></li><li class="topicref"><a href="topics/impala_alter_view.html">ALTER VIEW</a></li><li class="topicref"><a href="topics/impala_compute_stats.html">COMPUTE STATS</a></li><li class="topicref"><a href="topics/impala_create_database.html">CREATE DATABASE</a></li><li class="topicref"><a href="topics/impala_create_function.html">CREATE FUNCTION</a></li><li class="topicref"><a href="topics/impala_create_role.html">CREATE ROLE</a></li><li class="topicref"><a href="topics/impala_create_table.html">CREATE TABLE</a></li><li class="topicref"><a href="topics/impala_create_view.html">CREATE VIEW</a></li><li class="topicref"><a href="topics/impala_delete.html">DELETE</a></li><li class="topicref"><a href="topics/impala_describe.html">DESCRIBE</a></li><li class="topicref"><a href="topics/impala_drop_database.html">DROP DATABASE</a></li><li class="topicref"><a href="topics/impala_drop_function.html">DROP FUNCTION</a></li><li class=
"topicref"><a href="topics/impala_drop_role.html">DROP ROLE</a></li><li class="topicref"><a href="topics/impala_drop_stats.html">DROP STATS</a></li><li class="topicref"><a href="topics/impala_drop_table.html">DROP TABLE</a></li><li class="topicref"><a href="topics/impala_drop_view.html">DROP VIEW</a></li><li class="topicref"><a href="topics/impala_explain.html">EXPLAIN</a></li><li class="topicref"><a href="topics/impala_grant.html">GRANT</a></li><li class="topicref"><a href="topics/impala_insert.html">INSERT</a></li><li class="topicref"><a href="topics/impala_invalidate_metadata.html">INVALIDATE METADATA</a></li><li class="topicref"><a href="topics/impala_load_data.html">LOAD DATA</a></li><li class="topicref"><a href="topics/impala_refresh.html">REFRESH</a></li><li class="topicref"><a href="topics/impala_revoke.html">REVOKE</a></li><li class="topicref"><a href="topics/impala_select.html">SELECT</a><ul><li class="topicref"><a href="topics/impala_joins.html">Joins</a></li><li class="t
opicref"><a href="topics/impala_order_by.html">ORDER BY Clause</a></li><li class="topicref"><a href="topics/impala_group_by.html">GROUP BY Clause</a></li><li class="topicref"><a href="topics/impala_having.html">HAVING Clause</a></li><li class="topicref"><a href="topics/impala_limit.html">LIMIT Clause</a></li><li class="topicref"><a href="topics/impala_offset.html">OFFSET Clause</a></li><li class="topicref"><a href="topics/impala_union.html">UNION Clause</a></li><li class="topicref"><a href="topics/impala_subqueries.html">Subqueries</a></li><li class="topicref"><a href="topics/impala_tablesample.html">TABLESAMPLE Clause</a></li><li class="topicref"><a href="topics/impala_with.html">WITH Clause</a></li><li class="topicref"><a href="topics/impala_distinct.html">DISTINCT Operator</a></li><li class="topicref"><a href="topics/impala_hints.html">Hints</a></li></ul></li><li class="topicref"><a href="topics/impala_set.html">SET</a><ul><li class="topicref"><a href="topics/impala_query_options
.html">Query Options for the SET Statement</a><ul><li class="topicref"><a href="topics/impala_abort_on_default_limit_exceeded.html">ABORT_ON_DEFAULT_LIMIT_EXCEEDED</a></li><li class="topicref"><a href="topics/impala_abort_on_error.html">ABORT_ON_ERROR</a></li><li class="topicref"><a href="topics/impala_allow_unsupported_formats.html">ALLOW_UNSUPPORTED_FORMATS</a></li><li class="topicref"><a href="topics/impala_appx_count_distinct.html">APPX_COUNT_DISTINCT</a></li><li class="topicref"><a href="topics/impala_batch_size.html">BATCH_SIZE</a></li><li class="topicref"><a href="topics/impala_buffer_pool_limit.html">BUFFER_POOL_LIMIT</a></li><li class="topicref"><a href="topics/impala_compression_codec.html">COMPRESSION_CODEC</a></li><li class="topicref"><a href="topics/impala_debug_action.html">DEBUG_ACTION</a></li><li class="topicref"><a href="topics/impala_decimal_v2.html">DECIMAL_V2</a></li><li class="topicref"><a href="topics/impala_default_join_distribution_mode.html">DEFAULT_JOIN_DIS
TRIBUTION_MODE</a></li><li class="topicref"><a href="topics/impala_default_order_by_limit.html">DEFAULT_ORDER_BY_LIMIT</a></li><li class="topicref"><a href="topics/impala_default_spillable_buffer_size.html">DEFAULT_SPILLABLE_BUFFER_SIZE</a></li><li class="topicref"><a href="topics/impala_disable_codegen.html">DISABLE_CODEGEN</a></li><li class="topicref"><a href="topics/impala_disable_row_runtime_filtering.html">DISABLE_ROW_RUNTIME_FILTERING</a></li><li class="topicref"><a href="topics/impala_disable_streaming_preaggregations.html">DISABLE_STREAMING_PREAGGREGATIONS</a></li><li class="topicref"><a href="topics/impala_disable_unsafe_spills.html">DISABLE_UNSAFE_SPILLS</a></li><li class="topicref"><a href="topics/impala_exec_single_node_rows_threshold.html">EXEC_SINGLE_NODE_ROWS_THRESHOLD</a></li><li class="topicref"><a href="topics/impala_explain_level.html">EXPLAIN_LEVEL</a></li><li class="topicref"><a href="topics/impala_hbase_cache_blocks.html">HBASE_CACHE_BLOCKS</a></li><li class="t
opicref"><a href="topics/impala_hbase_caching.html">HBASE_CACHING</a></li><li class="topicref"><a href="topics/impala_live_progress.html">LIVE_PROGRESS</a></li><li class="topicref"><a href="topics/impala_live_summary.html">LIVE_SUMMARY</a></li><li class="topicref"><a href="topics/impala_max_errors.html">MAX_ERRORS</a></li><li class="topicref"><a href="topics/impala_max_io_buffers.html">MAX_IO_BUFFERS</a></li><li class="topicref"><a href="topics/impala_max_row_size.html">MAX_ROW_SIZE</a></li><li class="topicref"><a href="topics/impala_max_num_runtime_filters.html">MAX_NUM_RUNTIME_FILTERS</a></li><li class="topicref"><a href="topics/impala_max_scan_range_length.html">MAX_SCAN_RANGE_LENGTH</a></li><li class="topicref"><a href="topics/impala_mem_limit.html">MEM_LIMIT</a></li><li class="topicref"><a href="topics/impala_min_spillable_buffer_size.html">MIN_SPILLABLE_BUFFER_SIZE</a></li><li class="topicref"><a href="topics/impala_mt_dop.html">MT_DOP</a></li><li class="topicref"><a href="top
ics/impala_num_nodes.html">NUM_NODES</a></li><li class="topicref"><a href="topics/impala_num_scanner_threads.html">NUM_SCANNER_THREADS</a></li><li class="topicref"><a href="topics/impala_optimize_partition_key_scans.html">OPTIMIZE_PARTITION_KEY_SCANS</a></li><li class="topicref"><a href="topics/impala_parquet_compression_codec.html">PARQUET_COMPRESSION_CODEC</a></li><li class="topicref"><a href="topics/impala_parquet_annotate_strings_utf8.html">PARQUET_ANNOTATE_STRINGS_UTF8</a></li><li class="topicref"><a href="topics/impala_parquet_fallback_schema_resolution.html">PARQUET_FALLBACK_SCHEMA_RESOLUTION</a></li><li class="topicref"><a href="topics/impala_parquet_file_size.html">PARQUET_FILE_SIZE</a></li><li class="topicref"><a href="topics/impala_prefetch_mode.html">PREFETCH_MODE</a></li><li class="topicref"><a href="topics/impala_query_timeout_s.html">QUERY_TIMEOUT_S</a></li><li class="topicref"><a href="topics/impala_request_pool.html">REQUEST_POOL</a></li><li class="topicref"><a href
="topics/impala_replica_preference.html">REPLICA_PREFERENCE</a></li><li class="topicref"><a href="topics/impala_reservation_request_timeout.html">RESERVATION_REQUEST_TIMEOUT</a></li><li class="topicref"><a href="topics/impala_runtime_bloom_filter_size.html">RUNTIME_BLOOM_FILTER_SIZE</a></li><li class="topicref"><a href="topics/impala_runtime_filter_max_size.html">RUNTIME_FILTER_MAX_SIZE</a></li><li class="topicref"><a href="topics/impala_runtime_filter_min_size.html">RUNTIME_FILTER_MIN_SIZE</a></li><li class="topicref"><a href="topics/impala_runtime_filter_mode.html">RUNTIME_FILTER_MODE</a></li><li class="topicref"><a href="topics/impala_runtime_filter_wait_time_ms.html">RUNTIME_FILTER_WAIT_TIME_MS</a></li><li class="topicref"><a href="topics/impala_s3_skip_insert_staging.html">S3_SKIP_INSERT_STAGING</a></li><li class="topicref"><a href="topics/impala_scan_node_codegen_threshold.html">SCAN_NODE_CODEGEN_THRESHOLD</a></li><li class="topicref"><a href="topics/impala_schedule_random_rep
lica.html">SCHEDULE_RANDOM_REPLICA</a></li><li class="topicref"><a href="topics/impala_scratch_limit.html">SCRATCH_LIMIT</a></li><li class="topicref"><a href="topics/impala_support_start_over.html">SUPPORT_START_OVER</a></li><li class="topicref"><a href="topics/impala_sync_ddl.html">SYNC_DDL</a></li><li class="topicref"><a href="topics/impala_v_cpu_cores.html">V_CPU_CORES</a></li></ul></li></ul></li><li class="topicref"><a href="topics/impala_show.html">SHOW</a></li><li class="topicref"><a href="topics/impala_truncate_table.html">TRUNCATE TABLE</a></li><li class="topicref"><a href="topics/impala_update.html">UPDATE</a></li><li class="topicref"><a href="topics/impala_upsert.html">UPSERT</a></li><li class="topicref"><a href="topics/impala_use.html">USE</a></li></ul></li><li class="topicref"><a href="topics/impala_functions.html">Built-In Functions</a><ul><li class="topicref"><a href="topics/impala_math_functions.html">Mathematical Functions</a></li><li class="topicref"><a href="topics
/impala_bit_functions.html">Bit Functions</a></li><li class="topicref"><a href="topics/impala_conversion_functions.html">Type Conversion Functions</a></li><li class="topicref"><a href="topics/impala_datetime_functions.html">Date and Time Functions</a></li><li class="topicref"><a href="topics/impala_conditional_functions.html">Conditional Functions</a></li><li class="topicref"><a href="topics/impala_string_functions.html">String Functions</a></li><li class="topicref"><a href="topics/impala_misc_functions.html">Miscellaneous Functions</a></li><li class="topicref"><a href="topics/impala_aggregate_functions.html">Aggregate Functions</a><ul><li class="topicref"><a href="topics/impala_appx_median.html">APPX_MEDIAN</a></li><li class="topicref"><a href="topics/impala_avg.html">AVG</a></li><li class="topicref"><a href="topics/impala_count.html">COUNT</a></li><li class="topicref"><a href="topics/impala_group_concat.html">GROUP_CONCAT</a></li><li class="topicref"><a href="topics/impala_max.htm
l">MAX</a></li><li class="topicref"><a href="topics/impala_min.html">MIN</a></li><li class="topicref"><a href="topics/impala_ndv.html">NDV</a></li><li class="topicref"><a href="topics/impala_stddev.html">STDDEV, STDDEV_SAMP, STDDEV_POP</a></li><li class="topicref"><a href="topics/impala_sum.html">SUM</a></li><li class="topicref"><a href="topics/impala_variance.html">VARIANCE, VARIANCE_SAMP, VARIANCE_POP, VAR_SAMP, VAR_POP</a></li></ul></li><li class="topicref"><a href="topics/impala_analytic_functions.html">Analytic Functions</a></li><li class="topicref"><a href="topics/impala_udf.html">Impala User-Defined Functions (UDFs)</a></li></ul></li><li class="topicref"><a href="topics/impala_langref_unsupported.html">SQL Differences Between Impala and Hive</a></li><li class="topicref"><a href="topics/impala_porting.html">Porting SQL</a></li></ul></li><li class="topicref"><a href="topics/impala_impala_shell.html">The Impala Shell</a><ul><li class="topicref"><a href="topics/impala_shell_optio
ns.html">Configuration Options</a></li><li class="topicref"><a href="topics/impala_connecting.html">Connecting to impalad</a></li><li class="topicref"><a href="topics/impala_shell_running_commands.html">Running Commands and SQL Statements</a></li><li class="topicref"><a href="topics/impala_shell_commands.html">Command Reference</a></li></ul></li><li class="topicref"><a href="topics/impala_performance.html">Performance Tuning</a><ul><li class="topicref"><a href="topics/impala_perf_cookbook.html">Performance Best Practices</a></li><li class="topicref"><a href="topics/impala_perf_joins.html">Join Performance</a></li><li class="topicref"><a href="topics/impala_perf_stats.html">Table and Column Statistics</a></li><li class="topicref"><a href="topics/impala_perf_benchmarking.html">Benchmarking</a></li><li class="topicref"><a href="topics/impala_perf_resources.html">Controlling Resource Usage</a></li><li class="topicref"><a href="topics/impala_runtime_filtering.html">Runtime Filtering</a><
/li><li class="topicref"><a href="topics/impala_perf_hdfs_caching.html">HDFS Caching</a></li><li class="topicref"><a href="topics/impala_perf_testing.html">Testing Impala Performance</a></li><li class="topicref"><a href="topics/impala_explain_plan.html">EXPLAIN Plans and Query Profiles</a></li><li class="topicref"><a href="topics/impala_perf_skew.html">HDFS Block Skew</a></li></ul></li><li class="topicref"><a href="topics/impala_scalability.html">Scalability Considerations</a></li><li class="topicref"><a href="topics/impala_partitioning.html">Partitioning</a></li><li class="topicref"><a href="topics/impala_file_formats.html">File Formats</a><ul><li class="topicref"><a href="topics/impala_txtfile.html">Text Data Files</a></li><li class="topicref"><a href="topics/impala_parquet.html">Parquet Data Files</a></li><li class="topicref"><a href="topics/impala_avro.html">Avro Data Files</a></li><li class="topicref"><a href="topics/impala_rcfile.html">RCFile Data Files</a></li><li class="topi
cref"><a href="topics/impala_seqfile.html">SequenceFile Data Files</a></li></ul></li><li class="topicref"><a href="topics/impala_kudu.html">Using Impala to Query Kudu Tables</a></li><li class="topicref"><a href="topics/impala_hbase.html">HBase Tables</a></li><li class="topicref"><a href="topics/impala_s3.html">S3 Tables</a></li><li class="topicref"><a href="topics/impala_adls.html">ADLS Tables</a></li><li class="topicref"><a href="topics/impala_isilon.html">Isilon Storage</a></li><li class="topicref"><a href="topics/impala_logging.html">Logging</a></li><li class="topicref"><a href="topics/impala_troubleshooting.html">Troubleshooting Impala</a><ul><li class="topicref"><a href="topics/impala_webui.html">Web User Interface</a></li><li class="topicref"><a href="topics/impala_breakpad.html">Breakpad Minidumps</a></li></ul></li><li class="topicref"><a href="topics/impala_ports.html">Ports Used by Impala</a></li><li class="topicref"><a href="topics/impala_reserved_words.html">Impala Reserv
ed Words</a></li><li class="topicref"><a href="topics/impala_faq.html">Impala Frequently Asked Questions</a></li><li class="topicref"><a href="topics/impala_release_notes.html">Impala Release Notes</a><ul><li class="topicref"><a href="topics/impala_relnotes.html">Impala Release Notes</a></li><li class="topicref"><a href="topics/impala_new_features.html">New Features in Apache Impala</a></li><li class="topicref"><a href="topics/impala_incompatible_changes.html">Incompatible Changes and Limitations in Apache Impala</a></li><li class="topicref"><a href="topics/impala_known_issues.html">Known Issues and Workarounds in Impala</a></li><li class="topicref"><a href="topics/impala_fixed_issues.html">Fixed Issues in Apache Impala</a></li></ul></li></ul></nav></body></html>
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+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="map"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="impala"><link rel="stylesheet" type="text/css" href="commonltr.css"><title>Apache Impala Guide</title></head><body id="impala"><h1 class="title topictitle1">Apache Impala Guide</h1><nav><ul class="map"><li class="topicref"><a href="topics/impala_intro.html">Introducing Apache Impala</a></li><li class="topicref"><a href="topics/impala_concepts.html">Concepts and Architecture</a><ul><li class="topicref"><a href="topics/impala_components.html">Components</a></li><li class="topicref"><a href="topics/impala_development.html">Developing Applications</a></li><li class="topicref"><a href="topics/impala_hadoop.html">Role in the Hadoop Ecosystem</a></li></ul></li><li
class="topicref"><a href="topics/impala_planning.html">Deployment Planning</a><ul><li class="topicref"><a href="topics/impala_prereqs.html#prereqs">Requirements</a></li><li class="topicref"><a href="topics/impala_schema_design.html">Designing Schemas</a></li></ul></li><li class="topicref"><a href="topics/impala_install.html#install">Installing Impala</a></li><li class="topicref"><a href="topics/impala_config.html">Managing Impala</a><ul><li class="topicref"><a href="topics/impala_config_performance.html">Post-Installation Configuration for Impala</a></li><li class="topicref"><a href="topics/impala_odbc.html">Configuring Impala to Work with ODBC</a></li><li class="topicref"><a href="topics/impala_jdbc.html">Configuring Impala to Work with JDBC</a></li></ul></li><li class="topicref"><a href="topics/impala_upgrading.html">Upgrading Impala</a></li><li class="topicref"><a href="topics/impala_processes.html">Starting Impala</a><ul><li class="topicref"><a href="topics/impala_config_options
.html">Modifying Impala Startup Options</a></li></ul></li><li class="topicref"><a href="topics/impala_tutorial.html">Tutorials</a></li><li class="topicref"><a href="topics/impala_admin.html">Administration</a><ul><li class="topicref"><a href="topics/impala_admission.html">Admission Control and Query Queuing</a></li><li class="topicref"><a href="topics/impala_resource_management.html">Resource Management for Impala</a></li><li class="topicref"><a href="topics/impala_timeouts.html">Setting Timeouts</a></li><li class="topicref"><a href="topics/impala_proxy.html">Load-Balancing Proxy for HA</a></li><li class="topicref"><a href="topics/impala_disk_space.html">Managing Disk Space</a></li></ul></li><li class="topicref"><a href="topics/impala_security.html">Impala Security</a><ul><li class="topicref"><a href="topics/impala_security_guidelines.html">Security Guidelines for Impala</a></li><li class="topicref"><a href="topics/impala_security_files.html">Securing Impala Data and Log Files</a></
li><li class="topicref"><a href="topics/impala_security_install.html">Installation Considerations for Impala Security</a></li><li class="topicref"><a href="topics/impala_security_metastore.html">Securing the Hive Metastore Database</a></li><li class="topicref"><a href="topics/impala_security_webui.html">Securing the Impala Web User Interface</a></li><li class="topicref"><a href="topics/impala_ssl.html">Configuring TLS/SSL for Impala</a></li><li class="topicref"><a href="topics/impala_authorization.html">Enabling Sentry Authorization for Impala</a></li><li class="topicref"><a href="topics/impala_authentication.html">Impala Authentication</a><ul><li class="topicref"><a href="topics/impala_kerberos.html">Enabling Kerberos Authentication for Impala</a></li><li class="topicref"><a href="topics/impala_ldap.html">Enabling LDAP Authentication for Impala</a></li><li class="topicref"><a href="topics/impala_mixed_security.html">Using Multiple Authentication Methods with Impala</a></li><li clas
s="topicref"><a href="topics/impala_delegation.html">Configuring Impala Delegation for Hue and BI Tools</a></li></ul></li><li class="topicref"><a href="topics/impala_auditing.html">Auditing</a></li><li class="topicref"><a href="topics/impala_lineage.html">Viewing Lineage Info</a></li></ul></li><li class="topicref"><a href="topics/impala_langref.html">SQL Reference</a><ul><li class="topicref"><a href="topics/impala_comments.html">Comments</a></li><li class="topicref"><a href="topics/impala_datatypes.html">Data Types</a><ul><li class="topicref"><a href="topics/impala_array.html">ARRAY Complex Type (Impala 2.3 or higher only)</a></li><li class="topicref"><a href="topics/impala_bigint.html">BIGINT</a></li><li class="topicref"><a href="topics/impala_boolean.html">BOOLEAN</a></li><li class="topicref"><a href="topics/impala_char.html">CHAR</a></li><li class="topicref"><a href="topics/impala_decimal.html">DECIMAL</a></li><li class="topicref"><a href="topics/impala_double.html">DOUBLE</a></l
i><li class="topicref"><a href="topics/impala_float.html">FLOAT</a></li><li class="topicref"><a href="topics/impala_int.html">INT</a></li><li class="topicref"><a href="topics/impala_map.html">MAP Complex Type (Impala 2.3 or higher only)</a></li><li class="topicref"><a href="topics/impala_real.html">REAL</a></li><li class="topicref"><a href="topics/impala_smallint.html">SMALLINT</a></li><li class="topicref"><a href="topics/impala_string.html">STRING</a></li><li class="topicref"><a href="topics/impala_struct.html">STRUCT Complex Type (Impala 2.3 or higher only)</a></li><li class="topicref"><a href="topics/impala_timestamp.html">TIMESTAMP</a></li><li class="topicref"><a href="topics/impala_tinyint.html">TINYINT</a></li><li class="topicref"><a href="topics/impala_varchar.html">VARCHAR</a></li><li class="topicref"><a href="topics/impala_complex_types.html">Complex Types (Impala 2.3 or higher only)</a></li></ul></li><li class="topicref"><a href="topics/impala_literals.html">Literals</a></
li><li class="topicref"><a href="topics/impala_operators.html">SQL Operators</a></li><li class="topicref"><a href="topics/impala_schema_objects.html">Schema Objects and Object Names</a><ul><li class="topicref"><a href="topics/impala_aliases.html">Aliases</a></li><li class="topicref"><a href="topics/impala_databases.html">Databases</a></li><li class="topicref"><a href="topics/impala_functions_overview.html">Functions</a></li><li class="topicref"><a href="topics/impala_identifiers.html">Identifiers</a></li><li class="topicref"><a href="topics/impala_tables.html">Tables</a></li><li class="topicref"><a href="topics/impala_views.html">Views</a></li></ul></li><li class="topicref"><a href="topics/impala_langref_sql.html">SQL Statements</a><ul><li class="topicref"><a href="topics/impala_ddl.html">DDL Statements</a></li><li class="topicref"><a href="topics/impala_dml.html">DML Statements</a></li><li class="topicref"><a href="topics/impala_alter_table.html">ALTER TABLE</a></li><li class="topi
cref"><a href="topics/impala_alter_view.html">ALTER VIEW</a></li><li class="topicref"><a href="topics/impala_compute_stats.html">COMPUTE STATS</a></li><li class="topicref"><a href="topics/impala_create_database.html">CREATE DATABASE</a></li><li class="topicref"><a href="topics/impala_create_function.html">CREATE FUNCTION</a></li><li class="topicref"><a href="topics/impala_create_role.html">CREATE ROLE</a></li><li class="topicref"><a href="topics/impala_create_table.html">CREATE TABLE</a></li><li class="topicref"><a href="topics/impala_create_view.html">CREATE VIEW</a></li><li class="topicref"><a href="topics/impala_delete.html">DELETE</a></li><li class="topicref"><a href="topics/impala_describe.html">DESCRIBE</a></li><li class="topicref"><a href="topics/impala_drop_database.html">DROP DATABASE</a></li><li class="topicref"><a href="topics/impala_drop_function.html">DROP FUNCTION</a></li><li class="topicref"><a href="topics/impala_drop_role.html">DROP ROLE</a></li><li class="topicref"
><a href="topics/impala_drop_stats.html">DROP STATS</a></li><li class="topicref"><a href="topics/impala_drop_table.html">DROP TABLE</a></li><li class="topicref"><a href="topics/impala_drop_view.html">DROP VIEW</a></li><li class="topicref"><a href="topics/impala_explain.html">EXPLAIN</a></li><li class="topicref"><a href="topics/impala_grant.html">GRANT</a></li><li class="topicref"><a href="topics/impala_insert.html">INSERT</a></li><li class="topicref"><a href="topics/impala_invalidate_metadata.html">INVALIDATE METADATA</a></li><li class="topicref"><a href="topics/impala_load_data.html">LOAD DATA</a></li><li class="topicref"><a href="topics/impala_refresh.html">REFRESH</a></li><li class="topicref"><a href="topics/impala_revoke.html">REVOKE</a></li><li class="topicref"><a href="topics/impala_select.html">SELECT</a><ul><li class="topicref"><a href="topics/impala_joins.html">Joins</a></li><li class="topicref"><a href="topics/impala_order_by.html">ORDER BY Clause</a></li><li class="topicr
ef"><a href="topics/impala_group_by.html">GROUP BY Clause</a></li><li class="topicref"><a href="topics/impala_having.html">HAVING Clause</a></li><li class="topicref"><a href="topics/impala_limit.html">LIMIT Clause</a></li><li class="topicref"><a href="topics/impala_offset.html">OFFSET Clause</a></li><li class="topicref"><a href="topics/impala_union.html">UNION Clause</a></li><li class="topicref"><a href="topics/impala_subqueries.html">Subqueries</a></li><li class="topicref"><a href="topics/impala_tablesample.html">TABLESAMPLE Clause</a></li><li class="topicref"><a href="topics/impala_with.html">WITH Clause</a></li><li class="topicref"><a href="topics/impala_distinct.html">DISTINCT Operator</a></li></ul></li><li class="topicref"><a href="topics/impala_set.html">SET</a><ul><li class="topicref"><a href="topics/impala_query_options.html">Query Options for the SET Statement</a><ul><li class="topicref"><a href="topics/impala_abort_on_default_limit_exceeded.html">ABORT_ON_DEFAULT_LIMIT_EXC
EEDED</a></li><li class="topicref"><a href="topics/impala_abort_on_error.html">ABORT_ON_ERROR</a></li><li class="topicref"><a href="topics/impala_allow_unsupported_formats.html">ALLOW_UNSUPPORTED_FORMATS</a></li><li class="topicref"><a href="topics/impala_appx_count_distinct.html">APPX_COUNT_DISTINCT</a></li><li class="topicref"><a href="topics/impala_batch_size.html">BATCH_SIZE</a></li><li class="topicref"><a href="topics/impala_buffer_pool_limit.html">BUFFER_POOL_LIMIT</a></li><li class="topicref"><a href="topics/impala_compression_codec.html">COMPRESSION_CODEC</a></li><li class="topicref"><a href="topics/impala_compute_stats_min_sample_size.html">COMPUTE_STATS_MIN_SAMPLE_SIZE</a></li><li class="topicref"><a href="topics/impala_debug_action.html">DEBUG_ACTION</a></li><li class="topicref"><a href="topics/impala_decimal_v2.html">DECIMAL_V2</a></li><li class="topicref"><a href="topics/impala_default_join_distribution_mode.html">DEFAULT_JOIN_DISTRIBUTION_MODE</a></li><li class="topicr
ef"><a href="topics/impala_default_order_by_limit.html">DEFAULT_ORDER_BY_LIMIT</a></li><li class="topicref"><a href="topics/impala_default_spillable_buffer_size.html">DEFAULT_SPILLABLE_BUFFER_SIZE</a></li><li class="topicref"><a href="topics/impala_disable_codegen.html">DISABLE_CODEGEN</a></li><li class="topicref"><a href="topics/impala_disable_row_runtime_filtering.html">DISABLE_ROW_RUNTIME_FILTERING</a></li><li class="topicref"><a href="topics/impala_disable_streaming_preaggregations.html">DISABLE_STREAMING_PREAGGREGATIONS</a></li><li class="topicref"><a href="topics/impala_disable_unsafe_spills.html">DISABLE_UNSAFE_SPILLS</a></li><li class="topicref"><a href="topics/impala_exec_single_node_rows_threshold.html">EXEC_SINGLE_NODE_ROWS_THRESHOLD</a></li><li class="topicref"><a href="topics/impala_exec_time_limit_s.html">EXEC_TIME_LIMIT_S</a></li><li class="topicref"><a href="topics/impala_explain_level.html">EXPLAIN_LEVEL</a></li><li class="topicref"><a href="topics/impala_hbase_cach
e_blocks.html">HBASE_CACHE_BLOCKS</a></li><li class="topicref"><a href="topics/impala_hbase_caching.html">HBASE_CACHING</a></li><li class="topicref"><a href="topics/impala_live_progress.html">LIVE_PROGRESS</a></li><li class="topicref"><a href="topics/impala_live_summary.html">LIVE_SUMMARY</a></li><li class="topicref"><a href="topics/impala_max_errors.html">MAX_ERRORS</a></li><li class="topicref"><a href="topics/impala_max_io_buffers.html">MAX_IO_BUFFERS</a></li><li class="topicref"><a href="topics/impala_max_row_size.html">MAX_ROW_SIZE</a></li><li class="topicref"><a href="topics/impala_max_num_runtime_filters.html">MAX_NUM_RUNTIME_FILTERS</a></li><li class="topicref"><a href="topics/impala_max_scan_range_length.html">MAX_SCAN_RANGE_LENGTH</a></li><li class="topicref"><a href="topics/impala_mem_limit.html">MEM_LIMIT</a></li><li class="topicref"><a href="topics/impala_min_spillable_buffer_size.html">MIN_SPILLABLE_BUFFER_SIZE</a></li><li class="topicref"><a href="topics/impala_mt_dop.
html">MT_DOP</a></li><li class="topicref"><a href="topics/impala_num_nodes.html">NUM_NODES</a></li><li class="topicref"><a href="topics/impala_num_scanner_threads.html">NUM_SCANNER_THREADS</a></li><li class="topicref"><a href="topics/impala_optimize_partition_key_scans.html">OPTIMIZE_PARTITION_KEY_SCANS</a></li><li class="topicref"><a href="topics/impala_parquet_compression_codec.html">PARQUET_COMPRESSION_CODEC</a></li><li class="topicref"><a href="topics/impala_parquet_annotate_strings_utf8.html">PARQUET_ANNOTATE_STRINGS_UTF8</a></li><li class="topicref"><a href="topics/impala_parquet_fallback_schema_resolution.html">PARQUET_FALLBACK_SCHEMA_RESOLUTION</a></li><li class="topicref"><a href="topics/impala_parquet_file_size.html">PARQUET_FILE_SIZE</a></li><li class="topicref"><a href="topics/impala_prefetch_mode.html">PREFETCH_MODE</a></li><li class="topicref"><a href="topics/impala_query_timeout_s.html">QUERY_TIMEOUT_S</a></li><li class="topicref"><a href="topics/impala_request_pool.h
tml">REQUEST_POOL</a></li><li class="topicref"><a href="topics/impala_replica_preference.html">REPLICA_PREFERENCE</a></li><li class="topicref"><a href="topics/impala_reservation_request_timeout.html">RESERVATION_REQUEST_TIMEOUT</a></li><li class="topicref"><a href="topics/impala_runtime_bloom_filter_size.html">RUNTIME_BLOOM_FILTER_SIZE</a></li><li class="topicref"><a href="topics/impala_runtime_filter_max_size.html">RUNTIME_FILTER_MAX_SIZE</a></li><li class="topicref"><a href="topics/impala_runtime_filter_min_size.html">RUNTIME_FILTER_MIN_SIZE</a></li><li class="topicref"><a href="topics/impala_runtime_filter_mode.html">RUNTIME_FILTER_MODE</a></li><li class="topicref"><a href="topics/impala_runtime_filter_wait_time_ms.html">RUNTIME_FILTER_WAIT_TIME_MS</a></li><li class="topicref"><a href="topics/impala_s3_skip_insert_staging.html">S3_SKIP_INSERT_STAGING</a></li><li class="topicref"><a href="topics/impala_scan_node_codegen_threshold.html">SCAN_NODE_CODEGEN_THRESHOLD</a></li><li class
="topicref"><a href="topics/impala_schedule_random_replica.html">SCHEDULE_RANDOM_REPLICA</a></li><li class="topicref"><a href="topics/impala_scratch_limit.html">SCRATCH_LIMIT</a></li><li class="topicref"><a href="topics/impala_shuffle_distinct_exprs.html">SHUFFLE_DISTINCT_EXPRS</a></li><li class="topicref"><a href="topics/impala_support_start_over.html">SUPPORT_START_OVER</a></li><li class="topicref"><a href="topics/impala_sync_ddl.html">SYNC_DDL</a></li><li class="topicref"><a href="topics/impala_v_cpu_cores.html">V_CPU_CORES</a></li></ul></li></ul></li><li class="topicref"><a href="topics/impala_show.html">SHOW</a></li><li class="topicref"><a href="topics/impala_truncate_table.html">TRUNCATE TABLE</a></li><li class="topicref"><a href="topics/impala_update.html">UPDATE</a></li><li class="topicref"><a href="topics/impala_upsert.html">UPSERT</a></li><li class="topicref"><a href="topics/impala_use.html">USE</a></li><li class="topicref"><a href="topics/impala_hints.html">Optimizer Hint
s</a></li></ul></li><li class="topicref"><a href="topics/impala_functions.html">Built-In Functions</a><ul><li class="topicref"><a href="topics/impala_math_functions.html">Mathematical Functions</a></li><li class="topicref"><a href="topics/impala_bit_functions.html">Bit Functions</a></li><li class="topicref"><a href="topics/impala_conversion_functions.html">Type Conversion Functions</a></li><li class="topicref"><a href="topics/impala_datetime_functions.html">Date and Time Functions</a></li><li class="topicref"><a href="topics/impala_conditional_functions.html">Conditional Functions</a></li><li class="topicref"><a href="topics/impala_string_functions.html">String Functions</a></li><li class="topicref"><a href="topics/impala_misc_functions.html">Miscellaneous Functions</a></li><li class="topicref"><a href="topics/impala_aggregate_functions.html">Aggregate Functions</a><ul><li class="topicref"><a href="topics/impala_appx_median.html">APPX_MEDIAN</a></li><li class="topicref"><a href="top
ics/impala_avg.html">AVG</a></li><li class="topicref"><a href="topics/impala_count.html">COUNT</a></li><li class="topicref"><a href="topics/impala_group_concat.html">GROUP_CONCAT</a></li><li class="topicref"><a href="topics/impala_max.html">MAX</a></li><li class="topicref"><a href="topics/impala_min.html">MIN</a></li><li class="topicref"><a href="topics/impala_ndv.html">NDV</a></li><li class="topicref"><a href="topics/impala_stddev.html">STDDEV, STDDEV_SAMP, STDDEV_POP</a></li><li class="topicref"><a href="topics/impala_sum.html">SUM</a></li><li class="topicref"><a href="topics/impala_variance.html">VARIANCE, VARIANCE_SAMP, VARIANCE_POP, VAR_SAMP, VAR_POP</a></li></ul></li><li class="topicref"><a href="topics/impala_analytic_functions.html">Analytic Functions</a></li><li class="topicref"><a href="topics/impala_udf.html">Impala User-Defined Functions (UDFs)</a></li></ul></li><li class="topicref"><a href="topics/impala_langref_unsupported.html">SQL Differences Between Impala and Hive<
/a></li><li class="topicref"><a href="topics/impala_porting.html">Porting SQL</a></li></ul></li><li class="topicref"><a href="topics/impala_impala_shell.html">The Impala Shell</a><ul><li class="topicref"><a href="topics/impala_shell_options.html">Configuration Options</a></li><li class="topicref"><a href="topics/impala_connecting.html">Connecting to impalad</a></li><li class="topicref"><a href="topics/impala_shell_running_commands.html">Running Commands and SQL Statements</a></li><li class="topicref"><a href="topics/impala_shell_commands.html">Command Reference</a></li></ul></li><li class="topicref"><a href="topics/impala_performance.html">Performance Tuning</a><ul><li class="topicref"><a href="topics/impala_perf_cookbook.html">Performance Best Practices</a></li><li class="topicref"><a href="topics/impala_perf_joins.html">Join Performance</a></li><li class="topicref"><a href="topics/impala_perf_stats.html">Table and Column Statistics</a></li><li class="topicref"><a href="topics/impa
la_perf_benchmarking.html">Benchmarking</a></li><li class="topicref"><a href="topics/impala_perf_resources.html">Controlling Resource Usage</a></li><li class="topicref"><a href="topics/impala_runtime_filtering.html">Runtime Filtering</a></li><li class="topicref"><a href="topics/impala_perf_hdfs_caching.html">HDFS Caching</a></li><li class="topicref"><a href="topics/impala_perf_testing.html">Testing Impala Performance</a></li><li class="topicref"><a href="topics/impala_explain_plan.html">EXPLAIN Plans and Query Profiles</a></li><li class="topicref"><a href="topics/impala_perf_skew.html">HDFS Block Skew</a></li></ul></li><li class="topicref"><a href="topics/impala_scalability.html">Scalability Considerations</a></li><li class="topicref"><a href="topics/impala_partitioning.html">Partitioning</a></li><li class="topicref"><a href="topics/impala_file_formats.html">File Formats</a><ul><li class="topicref"><a href="topics/impala_txtfile.html">Text Data Files</a></li><li class="topicref"><a
href="topics/impala_parquet.html">Parquet Data Files</a></li><li class="topicref"><a href="topics/impala_avro.html">Avro Data Files</a></li><li class="topicref"><a href="topics/impala_rcfile.html">RCFile Data Files</a></li><li class="topicref"><a href="topics/impala_seqfile.html">SequenceFile Data Files</a></li></ul></li><li class="topicref"><a href="topics/impala_kudu.html">Using Impala to Query Kudu Tables</a></li><li class="topicref"><a href="topics/impala_hbase.html">HBase Tables</a></li><li class="topicref"><a href="topics/impala_s3.html">S3 Tables</a></li><li class="topicref"><a href="topics/impala_adls.html">ADLS Tables</a></li><li class="topicref"><a href="topics/impala_isilon.html">Isilon Storage</a></li><li class="topicref"><a href="topics/impala_logging.html">Logging</a></li><li class="topicref"><a href="topics/impala_troubleshooting.html">Troubleshooting Impala</a><ul><li class="topicref"><a href="topics/impala_webui.html">Web User Interface</a></li><li class="topicref">
<a href="topics/impala_breakpad.html">Breakpad Minidumps</a></li></ul></li><li class="topicref"><a href="topics/impala_ports.html">Ports Used by Impala</a></li><li class="topicref"><a href="topics/impala_reserved_words.html">Impala Reserved Words</a></li><li class="topicref"><a href="topics/impala_faq.html">Impala Frequently Asked Questions</a></li><li class="topicref"><a href="topics/impala_release_notes.html">Impala Release Notes</a><ul><li class="topicref"><a href="topics/impala_new_features.html">New Features in Apache Impala</a></li><li class="topicref"><a href="topics/impala_incompatible_changes.html">Incompatible Changes and Limitations in Apache Impala</a></li><li class="topicref"><a href="topics/impala_known_issues.html">Known Issues and Workarounds in Impala</a></li><li class="topicref"><a href="topics/impala_fixed_issues.html">Fixed Issues in Apache Impala</a></li></ul></li></ul></nav></body></html>
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-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="abort_on_default_limit_exceeded"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>ABORT_ON_DEFAULT_LIMIT_EXCEEDED Query Option</title></head><body id="abort_on_default_limit_exceeded"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="abort_on_default_limit_exceeded"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>ABORT_ON_DEFAULT_LIMIT_EXCEEDED Query Option</title></head><body id="abort_on_default_limit_exceeded"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">ABORT_ON_DEFAULT_LIMIT_EXCEEDED Query Option</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_abort_on_error.html
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SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="abort_on_error"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>ABORT_ON_ERROR Query Option</title></head><body id="abort_on_error"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="abort_on_error"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>ABORT_ON_ERROR Query Option</title></head><body id="abort_on_error"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">ABORT_ON_ERROR Query Option</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_adls.html
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-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="adls"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Using Impala with the Azure Data Lake Store (ADLS)</title></head><body id="adls"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="adls"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Using Impala with the Azure Data Lake Store (ADLS)</title></head><body id="adls"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Using Impala with the Azure Data Lake Store (ADLS)</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_admin.html
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<!DOCTYPE html
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-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_admission.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_resource_management.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_timeouts.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_proxy.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_disk_space.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="admin"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Admini
stration</title></head><body id="admin"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_admission.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_resource_management.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_timeouts.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_proxy.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_disk_space.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="admin"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Admini
stration</title></head><body id="admin"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Impala Administration</h1>
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<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_admin.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="admission_control"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Admission Control and Query Queuing</title></head><body id="admission_control"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_admin.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="admission_control"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Admission Control and Query Queuing</title></head><body id="admission_control"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Admission Control and Query Queuing</h1>
@@ -469,22 +469,6 @@
</dd>
- <dt class="dt dlterm" id="admission_config__disable_admission_control">
- <code class="ph codeph">disable_admission_control</code>
- </dt>
- <dd class="dd">
-
- <strong class="ph b">Purpose:</strong> Turns off the admission control feature entirely,
- regardless of other configuration option settings.
- <p class="p">
- <strong class="ph b">Type:</strong> Boolean </p>
- <p class="p">
- <strong class="ph b">Default:</strong>
- <code class="ph codeph">false</code>
- </p>
- </dd>
-
-
<dt class="dt dlterm" id="admission_config__disable_pool_max_requests">
<code class="ph codeph">disable_pool_max_requests</code>
</dt>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_aggregate_functions.html
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diff --git a/docs/build/html/topics/impala_aggregate_functions.html b/docs/build/html/topics/impala_aggregate_functions.html
index 1a58671..9b0b4b7 100644
--- a/docs/build/html/topics/impala_aggregate_functions.html
+++ b/docs/build/html/topics/impala_aggregate_functions.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_functions.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_appx_median.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_avg.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_count.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_group_concat.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_max.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_min.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_ndv.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_stddev.html"><meta name="DC.Relation" scheme="URI" conte
nt="../topics/impala_sum.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_variance.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="aggregate_functions"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Aggregate Functions</title></head><body id="aggregate_functions"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_functions.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_appx_median.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_avg.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_count.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_group_concat.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_max.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_min.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_ndv.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_stddev.html"><meta name="DC.Relation" scheme="URI" conte
nt="../topics/impala_sum.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_variance.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="aggregate_functions"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Aggregate Functions</title></head><body id="aggregate_functions"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Impala Aggregate Functions</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_aliases.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_aliases.html b/docs/build/html/topics/impala_aliases.html
index e995f5a..c88192a 100644
--- a/docs/build/html/topics/impala_aliases.html
+++ b/docs/build/html/topics/impala_aliases.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_schema_objects.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="aliases"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Overview of Impala Aliases</title></head><body id="aliases"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_schema_objects.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="aliases"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Overview of Impala Aliases</title></head><body id="aliases"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Overview of Impala Aliases</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_allow_unsupported_formats.html
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diff --git a/docs/build/html/topics/impala_allow_unsupported_formats.html b/docs/build/html/topics/impala_allow_unsupported_formats.html
index f752b47..499b3e5 100644
--- a/docs/build/html/topics/impala_allow_unsupported_formats.html
+++ b/docs/build/html/topics/impala_allow_unsupported_formats.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="allow_unsupported_formats"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>ALLOW_UNSUPPORTED_FORMATS Query Option</title></head><body id="allow_unsupported_formats"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="allow_unsupported_formats"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>ALLOW_UNSUPPORTED_FORMATS Query Option</title></head><body id="allow_unsupported_formats"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">ALLOW_UNSUPPORTED_FORMATS Query Option</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_alter_table.html
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diff --git a/docs/build/html/topics/impala_alter_table.html b/docs/build/html/topics/impala_alter_table.html
index e33b610..1ab9cd6 100644
--- a/docs/build/html/topics/impala_alter_table.html
+++ b/docs/build/html/topics/impala_alter_table.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="alter_table"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>ALTER TABLE Statement</title></head><body id="alter_table"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="alter_table"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>ALTER TABLE Statement</title></head><body id="alter_table"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">ALTER TABLE Statement</h1>
@@ -46,7 +46,7 @@ ALTER TABLE <var class="keyword varname">name</var> ALTER [COLUMN] <var class="k
ALTER TABLE <var class="keyword varname">name</var> ADD [IF NOT EXISTS] PARTITION (<var class="keyword varname">partition_spec</var>)
<span class="ph">[<var class="keyword varname">location_spec</var>]</span>
<span class="ph">[<var class="keyword varname">cache_spec</var>]</span>
-<span class="ph">ALTER TABLE <var class="keyword varname">name</var> ADD [IF NOT EXISTS] RANGE PARTITION (<var class="keyword varname">kudu_partition_spec</var>)</span>
+<span class="ph">ALTER TABLE <var class="keyword varname">name</var> ADD [IF NOT EXISTS] RANGE PARTITION <var class="keyword varname">kudu_partition_spec</var></span>
ALTER TABLE <var class="keyword varname">name</var> DROP [IF EXISTS] PARTITION (<var class="keyword varname">partition_spec</var>)
<span class="ph">[PURGE]</span>
@@ -477,7 +477,7 @@ yes,no</code></pre>
<p class="p">
Use the <code class="ph codeph">DESCRIBE FORMATTED</code> statement to see the current values of these properties for an
existing table. See <a class="xref" href="impala_create_table.html#create_table">CREATE TABLE Statement</a> for more details about these clauses.
- See <a class="xref" href="impala_perf_stats.html#perf_table_stats_manual">Setting the NUMROWS Value Manually through ALTER TABLE</a> for an example of using table properties to
+ See <a class="xref" href="impala_perf_stats.html#perf_table_stats_manual">impala_perf_stats.html#perf_table_stats_manual</a> for an example of using table properties to
fine-tune the performance-related table statistics.
</p>
@@ -510,7 +510,7 @@ alter table analysis_data set tblproperties('numRows'='1001000000', 'STATS_GENER
-- change the numRows property for the partition and the overall table.
alter table partitioned_data partition(year=2009, month=4) set tblproperties ('numRows'='30000', 'STATS_GENERATED_VIA_STATS_TASK'='true');
alter table partitioned_data set tblproperties ('numRows'='1030000', 'STATS_GENERATED_VIA_STATS_TASK'='true');</code></pre>
- See <a class="xref" href="impala_perf_stats.html#perf_table_stats_manual">Setting the NUMROWS Value Manually through ALTER TABLE</a> for details.
+ See <a class="xref" href="impala_perf_stats.html#perf_table_stats_manual">impala_perf_stats.html#perf_table_stats_manual</a> for details.
</div>
<p class="p">
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_alter_view.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_alter_view.html b/docs/build/html/topics/impala_alter_view.html
index 3f72eea..885303b 100644
--- a/docs/build/html/topics/impala_alter_view.html
+++ b/docs/build/html/topics/impala_alter_view.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="alter_view"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>ALTER VIEW Statement</title></head><body id="alter_view"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="alter_view"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>ALTER VIEW Statement</title></head><body id="alter_view"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">ALTER VIEW Statement</h1>
[05/15] impala git commit: [DOCS] Add Impala docs from branch 2.x
Posted by mi...@apache.org.
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_perf_stats.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_perf_stats.html b/docs/build/html/topics/impala_perf_stats.html
index eaf369d..ce79b71 100644
--- a/docs/build/html/topics/impala_perf_stats.html
+++ b/docs/build/html/topics/impala_perf_stats.html
@@ -1,60 +1,52 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_performance.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="perf_stats"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Table and Column Statistics</title></head><body id="perf_stats"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_performance.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="perf_stats"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Table and Column Statistics</title></head><body id="perf_stats"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Table and Column Statistics</h1>
+
<div class="body conbody">
<p class="p">
- Impala can do better optimization for complex or multi-table queries when it has access to statistics about
- the volume of data and how the values are distributed. Impala uses this information to help parallelize and
- distribute the work for a query. For example, optimizing join queries requires a way of determining if one
- table is <span class="q">"bigger"</span> than another, which is a function of the number of rows and the average row size
- for each table. The following sections describe the categories of statistics Impala can work
- with, and how to produce them and keep them up to date.
+ Impala can do better optimization for complex or multi-table queries when it has access to
+ statistics about the volume of data and how the values are distributed. Impala uses this
+ information to help parallelize and distribute the work for a query. For example,
+ optimizing join queries requires a way of determining if one table is <span class="q">"bigger"</span> than
+ another, which is a function of the number of rows and the average row size for each
+ table. The following sections describe the categories of statistics Impala can work with,
+ and how to produce them and keep them up to date.
</p>
- <div class="note note note_note"><span class="note__title notetitle">Note:</span>
- <p class="p">
- Originally, Impala relied on the Hive mechanism for collecting statistics, through the Hive <code class="ph codeph">ANALYZE
- TABLE</code> statement which initiates a MapReduce job. For better user-friendliness and reliability,
- Impala implements its own <code class="ph codeph">COMPUTE STATS</code> statement in Impala 1.2.2 and higher, along with the
- <code class="ph codeph">DROP STATS</code>, <code class="ph codeph">SHOW TABLE STATS</code>, and <code class="ph codeph">SHOW COLUMN STATS</code>
- statements.
- </p>
- </div>
+ <p class="p toc inpage all"></p>
- <p class="p toc inpage"></p>
</div>
<nav role="navigation" class="related-links"><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_performance.html">Tuning Impala for Performance</a></div></div></nav><article class="topic concept nested1" aria-labelledby="perf_table_stats__table_stats" id="perf_stats__perf_table_stats">
<h2 class="title topictitle2" id="perf_table_stats__table_stats">Overview of Table Statistics</h2>
-
- <div class="body conbody">
+ <div class="body conbody">
<p class="p">
The Impala query planner can make use of statistics about entire tables and partitions.
- This information includes physical characteristics such as the number of rows, number of data files,
- the total size of the data files, and the file format. For partitioned tables, the numbers
- are calculated per partition, and as totals for the whole table.
- This metadata is stored in the metastore database, and can be updated by either Impala or Hive.
- If a number is not available, the value -1 is used as a placeholder.
- Some numbers, such as number and total sizes of data files, are always kept up to date because
- they can be calculated cheaply, as part of gathering HDFS block metadata.
+ This information includes physical characteristics such as the number of rows, number of
+ data files, the total size of the data files, and the file format. For partitioned
+ tables, the numbers are calculated per partition, and as totals for the whole table.
+ This metadata is stored in the metastore database, and can be updated by either Impala
+ or Hive. If a number is not available, the value -1 is used as a placeholder. Some
+ numbers, such as number and total sizes of data files, are always kept up to date
+ because they can be calculated cheaply, as part of gathering HDFS block metadata.
</p>
<p class="p">
- The following example shows table stats for an unpartitioned Parquet table.
- The values for the number and sizes of files are always available.
- Initially, the number of rows is not known, because it requires a potentially expensive
- scan through the entire table, and so that value is displayed as -1.
- The <code class="ph codeph">COMPUTE STATS</code> statement fills in any unknown table stats values.
+ The following example shows table stats for an unpartitioned Parquet table. The values
+ for the number and sizes of files are always available. Initially, the number of rows is
+ not known, because it requires a potentially expensive scan through the entire table,
+ and so that value is displayed as -1. The <code class="ph codeph">COMPUTE STATS</code> statement fills
+ in any unknown table stats values.
</p>
<pre class="pre codeblock"><code>
@@ -82,22 +74,23 @@ show table stats parquet_snappy;
</code></pre>
<p class="p">
- Impala performs some optimizations using this metadata on its own, and other optimizations by
- using a combination of table and column statistics.
+ Impala performs some optimizations using this metadata on its own, and other
+ optimizations by using a combination of table and column statistics.
</p>
<p class="p">
- To check that table statistics are available for a table, and see the details of those statistics, use the
- statement <code class="ph codeph">SHOW TABLE STATS <var class="keyword varname">table_name</var></code>. See
- <a class="xref" href="impala_show.html#show">SHOW Statement</a> for details.
+ To check that table statistics are available for a table, and see the details of those
+ statistics, use the statement <code class="ph codeph">SHOW TABLE STATS
+ <var class="keyword varname">table_name</var></code>. See <a class="xref" href="impala_show.html#show">SHOW Statement</a> for
+ details.
</p>
<p class="p">
If you use the Hive-based methods of gathering statistics, see
<a class="xref" href="https://cwiki.apache.org/confluence/display/Hive/StatsDev" target="_blank">the
- Hive wiki</a> for information about the required configuration on the Hive side. Where practical,
- use the Impala <code class="ph codeph">COMPUTE STATS</code> statement to avoid potential configuration and scalability
- issues with the statistics-gathering process.
+ Hive wiki</a> for information about the required configuration on the Hive side.
+ Where practical, use the Impala <code class="ph codeph">COMPUTE STATS</code> statement to avoid
+ potential configuration and scalability issues with the statistics-gathering process.
</p>
<p class="p">
@@ -105,7 +98,9 @@ show table stats parquet_snappy;
Impala can only use the resulting column statistics if the table is unpartitioned.
Impala cannot use Hive-generated column statistics for a partitioned table.
</p>
+
</div>
+
</article>
<article class="topic concept nested1" aria-labelledby="perf_column_stats__column_stats" id="perf_stats__perf_column_stats">
@@ -115,23 +110,24 @@ show table stats parquet_snappy;
<div class="body conbody">
<p class="p">
- The Impala query planner can make use of statistics about individual columns when that metadata is
- available in the metastore database. This technique is most valuable for columns compared across tables in
- <a class="xref" href="impala_perf_joins.html#perf_joins">join queries</a>, to help estimate how many rows the query
- will retrieve from each table. <span class="ph"> These statistics are also important for correlated
- subqueries using the <code class="ph codeph">EXISTS()</code> or <code class="ph codeph">IN()</code> operators, which are processed
+ The Impala query planner can make use of statistics about individual columns when that
+ metadata is available in the metastore database. This technique is most valuable for
+ columns compared across tables in <a class="xref" href="impala_perf_joins.html#perf_joins">join
+ queries</a>, to help estimate how many rows the query will retrieve from each table.
+ <span class="ph"> These statistics are also important for correlated subqueries using the
+ <code class="ph codeph">EXISTS()</code> or <code class="ph codeph">IN()</code> operators, which are processed
internally the same way as join queries.</span>
</p>
<p class="p">
- The following example shows column stats for an unpartitioned Parquet table.
- The values for the maximum and average sizes of some types are always available,
- because those figures are constant for numeric and other fixed-size types.
- Initially, the number of distinct values is not known, because it requires a potentially expensive
- scan through the entire table, and so that value is displayed as -1.
- The same applies to maximum and average sizes of variable-sized types, such as <code class="ph codeph">STRING</code>.
- The <code class="ph codeph">COMPUTE STATS</code> statement fills in most unknown column stats values.
- (It does not record the number of <code class="ph codeph">NULL</code> values, because currently Impala
+ The following example shows column stats for an unpartitioned Parquet table. The values
+ for the maximum and average sizes of some types are always available, because those
+ figures are constant for numeric and other fixed-size types. Initially, the number of
+ distinct values is not known, because it requires a potentially expensive scan through
+ the entire table, and so that value is displayed as -1. The same applies to maximum and
+ average sizes of variable-sized types, such as <code class="ph codeph">STRING</code>. The
+ <code class="ph codeph">COMPUTE STATS</code> statement fills in most unknown column stats values. (It
+ does not record the number of <code class="ph codeph">NULL</code> values, because currently Impala
does not use that figure for query optimization.)
</p>
@@ -170,10 +166,11 @@ show column stats parquet_snappy;
<div class="note note note_note"><span class="note__title notetitle">Note:</span>
<p class="p">
- For column statistics to be effective in Impala, you also need to have table statistics for the
- applicable tables, as described in <a class="xref" href="impala_perf_stats.html#perf_table_stats">Overview of Table Statistics</a>. When you use
- the Impala <code class="ph codeph">COMPUTE STATS</code> statement, both table and column statistics are automatically
- gathered at the same time, for all columns in the table.
+ For column statistics to be effective in Impala, you also need to have table
+ statistics for the applicable tables, as described in
+ <a class="xref" href="impala_perf_stats.html#perf_table_stats">Overview of Table Statistics</a>. When you use the Impala
+ <code class="ph codeph">COMPUTE STATS</code> statement, both table and column statistics are
+ automatically gathered at the same time, for all columns in the table.
</p>
</div>
@@ -185,13 +182,12 @@ show column stats parquet_snappy;
higher speeds up the <code class="ph codeph">COMPUTE STATS</code> statement by
skipping this <code class="ph codeph">NULL</code> counting. </div>
-
-
<p class="p">
- To check whether column statistics are available for a particular set of columns, use the <code class="ph codeph">SHOW
- COLUMN STATS <var class="keyword varname">table_name</var></code> statement, or check the extended
- <code class="ph codeph">EXPLAIN</code> output for a query against that table that refers to those columns. See
- <a class="xref" href="impala_show.html#show">SHOW Statement</a> and <a class="xref" href="impala_explain.html#explain">EXPLAIN Statement</a> for details.
+ To check whether column statistics are available for a particular set of columns, use
+ the <code class="ph codeph">SHOW COLUMN STATS <var class="keyword varname">table_name</var></code> statement, or check
+ the extended <code class="ph codeph">EXPLAIN</code> output for a query against that table that refers
+ to those columns. See <a class="xref" href="impala_show.html#show">SHOW Statement</a> and
+ <a class="xref" href="impala_explain.html#explain">EXPLAIN Statement</a> for details.
</p>
<p class="p">
@@ -199,32 +195,37 @@ show column stats parquet_snappy;
Impala can only use the resulting column statistics if the table is unpartitioned.
Impala cannot use Hive-generated column statistics for a partitioned table.
</p>
+
</div>
+
</article>
<article class="topic concept nested1" aria-labelledby="perf_stats_partitions__stats_partitions" id="perf_stats__perf_stats_partitions">
+
<h2 class="title topictitle2" id="perf_stats_partitions__stats_partitions">How Table and Column Statistics Work for Partitioned Tables</h2>
+
<div class="body conbody">
<p class="p">
- When you use Impala for <span class="q">"big data"</span>, you are highly likely to use partitioning
- for your biggest tables, the ones representing data that can be logically divided
- based on dates, geographic regions, or similar criteria. The table and column statistics
- are especially useful for optimizing queries on such tables. For example, a query involving
- one year might involve substantially more or less data than a query involving a different year,
- or a range of several years. Each query might be optimized differently as a result.
+ When you use Impala for <span class="q">"big data"</span>, you are highly likely to use partitioning for
+ your biggest tables, the ones representing data that can be logically divided based on
+ dates, geographic regions, or similar criteria. The table and column statistics are
+ especially useful for optimizing queries on such tables. For example, a query involving
+ one year might involve substantially more or less data than a query involving a
+ different year, or a range of several years. Each query might be optimized differently
+ as a result.
</p>
<p class="p">
The following examples show how table and column stats work with a partitioned table.
- The table for this example is partitioned by year, month, and day.
- For simplicity, the sample data consists of 5 partitions, all from the same year and month.
- Table stats are collected independently for each partition. (In fact, the
- <code class="ph codeph">SHOW PARTITIONS</code> statement displays exactly the same information as
- <code class="ph codeph">SHOW TABLE STATS</code> for a partitioned table.) Column stats apply to
- the entire table, not to individual partitions. Because the partition key column values
- are represented as HDFS directories, their characteristics are typically known in advance,
- even when the values for non-key columns are shown as -1.
+ The table for this example is partitioned by year, month, and day. For simplicity, the
+ sample data consists of 5 partitions, all from the same year and month. Table stats are
+ collected independently for each partition. (In fact, the <code class="ph codeph">SHOW
+ PARTITIONS</code> statement displays exactly the same information as <code class="ph codeph">SHOW
+ TABLE STATS</code> for a partitioned table.) Column stats apply to the entire table,
+ not to individual partitions. Because the partition key column values are represented as
+ HDFS directories, their characteristics are typically known in advance, even when the
+ values for non-key columns are shown as -1.
</p>
<pre class="pre codeblock"><code>
@@ -305,231 +306,419 @@ show column stats year_month_day;
Impala can only use the resulting column statistics if the table is unpartitioned.
Impala cannot use Hive-generated column statistics for a partitioned table.
</p>
+
</div>
+
</article>
- <article class="topic concept nested1" aria-labelledby="perf_stats_incremental__incremental_stats" id="perf_stats__perf_stats_incremental">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title5" id="perf_stats__perf_generating_stats">
- <h2 class="title topictitle2" id="perf_stats_incremental__incremental_stats">Overview of Incremental Statistics</h2>
+ <h2 class="title topictitle2" id="ariaid-title5">Generating Table and Column Statistics</h2>
<div class="body conbody">
<p class="p">
- In Impala 2.1.0 and higher, you can use the syntax <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> and
- <code class="ph codeph">DROP INCREMENTAL STATS</code>. The <code class="ph codeph">INCREMENTAL</code> clauses work with incremental
- statistics, a specialized feature for partitioned tables that are large or frequently updated with new
- partitions.
- </p>
-
- <p class="p">
- When you compute incremental statistics for a partitioned table, by default Impala only processes those
- partitions that do not yet have incremental statistics. By processing only newly added partitions, you can
- keep statistics up to date for large partitioned tables, without incurring the overhead of reprocessing the
- entire table each time.
+ Use the <code class="ph codeph">COMPUTE STATS</code> family of commands to collect table and
+ column statistics. The <code class="ph codeph">COMPUTE STATS</code> variants offer
+ different tradeoffs between computation cost, staleness, and maintenance
+ workflows which are explained below.
</p>
<div class="note important note_important"><span class="note__title importanttitle">Important:</span>
<p class="p">
For a particular table, use either <code class="ph codeph">COMPUTE STATS</code> or
- <code class="ph codeph">COMPUTE INCREMENTAL STATS</code>, but never combine the two or alternate
- between them. If you switch from <code class="ph codeph">COMPUTE STATS</code> to
- <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> during the lifetime of a table, or vice
- versa, drop all statistics (by running both <code class="ph codeph">DROP STATS</code> and
- <code class="ph codeph">DROP INCREMENTAL STATS</code>) before making the switch.
- </p>
- <p class="p">
- When you run <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> on a table for the first time,
- the statistics are computed again from scratch regardless of whether the table already
- has statistics. Therefore, expect a one-time resource-intensive operation
- for scanning the entire table when running <code class="ph codeph">COMPUTE INCREMENTAL STATS</code>
- for the first time on a given table.
- </p>
- <p class="p">
- For a table with a huge number of partitions and many columns, the approximately 400 bytes
- of metadata per column per partition can add up to significant memory overhead, as it must
- be cached on the <span class="keyword cmdname">catalogd</span> host and on every <span class="keyword cmdname">impalad</span> host
- that is eligible to be a coordinator. If this metadata for all tables combined exceeds 2 GB,
- you might experience service downtime.
+ <code class="ph codeph">COMPUTE INCREMENTAL STATS</code>, but never combine the two or
+ alternate between them. If you switch from <code class="ph codeph">COMPUTE STATS</code> to
+ <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> during the lifetime of a table, or
+ vice versa, drop all statistics by running <code class="ph codeph">DROP STATS</code> before
+ making the switch.
</p>
</div>
- <p class="p">
- You can also compute or drop statistics for a single partition by including a <code class="ph codeph">PARTITION</code>
- clause in the <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> or <code class="ph codeph">DROP INCREMENTAL STATS</code>
- statement.
- </p>
- <p class="p">
- The metadata for incremental statistics is handled differently from the original style of statistics:
- </p>
- <ul class="ul">
- <li class="li">
- <p class="p">
- If you have a partitioned table for which you have already run a regular <code class="ph codeph">COMPUTE STATS</code>
- statement, issuing <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> without a partition clause causes Impala
- to rescan the entire table. Once the incremental statistics are computed, any future <code class="ph codeph">COMPUTE INCREMENTAL
- STATS</code> statements only scan any new partitions and any partitions where you performed
- <code class="ph codeph">DROP INCREMENTAL STATS</code>.
- </p>
- </li>
+ </div>
- <li class="li">
- <p class="p">
- The <code class="ph codeph">SHOW TABLE STATS</code> and <code class="ph codeph">SHOW PARTITIONS</code> statements now include an
- additional column showing whether incremental statistics are available for each column. A partition
- could already be covered by the original type of statistics based on a prior <code class="ph codeph">COMPUTE
- STATS</code> statement, as indicated by a value other than <code class="ph codeph">-1</code> under the
- <code class="ph codeph">#Rows</code> column. Impala query planning uses either kind of statistics when available.
- </p>
- </li>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title6" id="perf_generating_stats__concept_y2f_nfl_mdb">
- <li class="li">
- <p class="p">
- <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> takes more time than <code class="ph codeph">COMPUTE STATS</code> for the
- same volume of data. Therefore it is most suitable for tables with large data volume where new
- partitions are added frequently, making it impractical to run a full <code class="ph codeph">COMPUTE STATS</code>
- operation for each new partition. For unpartitioned tables, or partitioned tables that are loaded once
- and not updated with new partitions, use the original <code class="ph codeph">COMPUTE STATS</code> syntax.
- </p>
- </li>
+ <h3 class="title topictitle3" id="ariaid-title6">COMPUTE STATS</h3>
- <li class="li">
- <p class="p">
- <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> uses some memory in the <span class="keyword cmdname">catalogd</span> process,
- proportional to the number of partitions and number of columns in the applicable table. The memory
- overhead is approximately 400 bytes for each column in each partition. This memory is reserved in the
- <span class="keyword cmdname">catalogd</span> daemon, the <span class="keyword cmdname">statestored</span> daemon, and in each instance of
- the <span class="keyword cmdname">impalad</span> daemon.
- </p>
- </li>
+ <div class="body conbody">
- <li class="li">
- <p class="p">
- In cases where new files are added to an existing partition, issue a <code class="ph codeph">REFRESH</code> statement
- for the table, followed by a <code class="ph codeph">DROP INCREMENTAL STATS</code> and <code class="ph codeph">COMPUTE INCREMENTAL
- STATS</code> sequence for the changed partition.
- </p>
- </li>
+ <p class="p">
+ The <code class="ph codeph">COMPUTE STATS</code> command collects and sets the table-level
+ and partition-level row counts as well as all column statistics for a given
+ table. The collection process is CPU-intensive and can take a long time to
+ complete for very large tables.
+ </p>
+ <div class="p">
+ To speed up <code class="ph codeph">COMPUTE STATS</code> consider the following options
+ which can be combined.
+ <ul class="ul">
+ <li class="li">
+ <p class="p">
+ Limit the number of columns for which statistics are collected to increase
+ the efficiency of COMPUTE STATS. Queries benefit from statistics for those
+ columns involved in filters, join conditions, group by or partition by
+ clauses. Other columns are good candidates to exclude from COMPUTE STATS.
+ This feature is available since Impala 2.12.
+ </p>
+ </li>
+ <li class="li">
+ <p class="p">
+ Set the MT_DOP query option to use more threads within each participating
+ impalad to compute the statistics faster - but not more efficiently. Note
+ that computing stats on a large table with a high MT_DOP value can
+ negatively affect other queries running at the same time if the
+ COMPUTE STATS claims most CPU cycles.
+ This feature is available since Impala 2.8.
+ </p>
+ </li>
+ <li class="li">
+ <p class="p">
+ Consider the experimental extrapolation and sampling features (see below)
+ to further increase the efficiency of computing stats.
+ </p>
+ </li>
+ </ul>
+ </div>
- <li class="li">
- <p class="p">
- The <code class="ph codeph">DROP INCREMENTAL STATS</code> statement operates only on a single partition at a time. To
- remove statistics (whether incremental or not) from all partitions of a table, issue a <code class="ph codeph">DROP
- STATS</code> statement with no <code class="ph codeph">INCREMENTAL</code> or <code class="ph codeph">PARTITION</code> clauses.
- </p>
- </li>
- </ul>
+ <p class="p">
+ <code class="ph codeph">COMPUTE STATS</code> is intended to be run periodically,
+ e.g. weekly, or on-demand when the contents of a table have changed
+ significantly. Due to the high resource utilization and long repsonse
+ time of t<code class="ph codeph">COMPUTE STATS</code>, it is most practical to run it
+ in a scheduled maintnance window where the Impala cluster is idle
+ enough to accommodate the expensive operation. The degree of change that
+ qualifies as <span class="q">"significant"</span> depends on the query workload, but typically,
+ if 30% of the rows have changed then it is recommended to recompute
+ statistics.
+ </p>
- <p class="p">
- The following considerations apply to incremental statistics when the structure of an existing table is
- changed (known as <dfn class="term">schema evolution</dfn>):
- </p>
+ <p class="p">
+ If you reload a complete new set of data for a table, but the number of rows and
+ number of distinct values for each column is relatively unchanged from before, you
+ do not need to recompute stats for the table.
+ </p>
- <ul class="ul">
- <li class="li">
- <p class="p">
- If you use an <code class="ph codeph">ALTER TABLE</code> statement to drop a column, the existing statistics remain
- valid and <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> does not rescan any partitions.
- </p>
- </li>
+ </div>
- <li class="li">
+ <article class="topic concept nested3" aria-labelledby="ariaid-title7" id="concept_y2f_nfl_mdb__experimental_stats_features">
+ <h4 class="title topictitle4" id="ariaid-title7">Experimental: Extrapolation and Sampling</h4>
+ <div class="body conbody">
+ <div class="p">
+ Impala 2.12 and higher includes two experimental features to alleviate
+ common issues for computing and maintaining statistics on very large tables.
+ The following shortcomings are improved upon:
+ <ul class="ul">
+ <li class="li">
+ <p class="p">
+ Newly added partitions do not have row count statistics. Table scans
+ that only access those new partitions are treated as not having stats.
+ Similarly, table scans that access both new and old partitions estimate
+ the scan cardinality based on those old partitions that have stats, and
+ the new partitions without stats are treated as having 0 rows.
+ </p>
+ </li>
+ <li class="li">
+ <p class="p">
+ The row counts of existing partitions become stale when data is added
+ or dropped.
+ </p>
+ </li>
+ <li class="li">
+ <p class="p">
+ Computing stats for tables with a 100,000 or more partitions might fail
+ or be very slow due to the high cost of updating the partition metadata
+ in the Hive Metastore.
+ </p>
+ </li>
+ <li class="li">
+ <p class="p">
+ With transient compute resources it is important to minimize the time
+ from starting a new cluster to successfully running queries.
+ Since the cluster might be relatively short-lived, users might prefer to
+ quickly collect stats that are "good enough" as opposed to spending
+ a lot of time and resouces on computing full-fidelity stats.
+ </p>
+ </li>
+ </ul>
+ For very large tables, it is often wasteful or impractical to run a full
+ COMPUTE STATS to address the scenarios above on a frequent basis.
+ </div>
<p class="p">
- If you use an <code class="ph codeph">ALTER TABLE</code> statement to add a column, Impala rescans all partitions and
- fills in the appropriate column-level values the next time you run <code class="ph codeph">COMPUTE INCREMENTAL
- STATS</code>.
+ The sampling feature makes COMPUTE STATS more efficient by processing a
+ fraction of the table data, and the extrapolation feature aims to reduce
+ the frequency at which COMPUTE STATS needs to be re-run by estimating
+ the row count of new and modified partitions.
</p>
- </li>
-
- <li class="li">
<p class="p">
- If you use an <code class="ph codeph">ALTER TABLE</code> statement to change the data type of a column, Impala
- rescans all partitions and fills in the appropriate column-level values the next time you run
- <code class="ph codeph">COMPUTE INCREMENTAL STATS</code>.
+ The sampling and extrapolation features are disabled by default.
+ They can be enabled globally or for specific tables, as follows.
+ Set the impalad start-up configuration "--enable_stats_extrapolation" to
+ enable the features globally. To enable them only for a specific table, set
+ the "impala.enable.stats.extrapolation" table property to "true" for the
+ desired table. The tbale-level property overrides the global setting, so
+ it is also possible to enable sampling and extrapolation globally, but
+ disable it for specific tables by setting the table property to "false".
+ Example:
+ ALTER TABLE mytable test_table SET TBLPROPERTIES("impala.enable.stats.extrapolation"="true")
</p>
- </li>
+ <div class="note note note_note"><span class="note__title notetitle">Note:</span>
+ Why are these features experimental? Due to their probabilistic nature
+ it is possible that these features perform pathologically poorly on tables
+ with extreme data/file/size distributions. Since it is not feasible for us
+ to test all possible scenarios we only cautiously advertise these new
+ capabilities. That said, the features have been thoroughly tested and
+ are considered functionally stable. If you decide to give these features
+ a try, please tell us about your experience at user@impala.apache.org!
+ We rely on user feedback to guide future inprovements in statistics
+ collection.
+ </div>
+ </div>
+
+ <article class="topic concept nested4" aria-labelledby="ariaid-title8" id="experimental_stats_features__experimental_stats_extrapolation">
+ <h5 class="title topictitle5" id="ariaid-title8">Stats Extrapolation</h5>
+ <div class="body conbody">
+ <p class="p">
+ The main idea of stats extrapolation is to estimate the row count of new
+ and modified partitions based on the result of the last COMPUTE STATS.
+ Enabling stats extrapolation changes the behavior of COMPUTE STATS,
+ as well as the cardinality estimation of table scans. COMPUTE STATS no
+ longer computes and stores per-partition row counts, and instead, only
+ computes a table-level row count together with the total number of file
+ bytes in the table at that time. No partition metadata is modified. The
+ input cardinality of a table scan is estimated by converting the data
+ volume of relevant partitions to a row count, based on the table-level
+ row count and file bytes statistics. It is assumed that within the same
+ table, different sets of files with the same data volume correspond
+ to the similar number of rows on average. With extrapolation enabled,
+ the scan cardinality estimation ignores per-partition row counts. It
+ only relies on the table-level statistics and the scanned data volume.
+ </p>
+ <p class="p">
+ The SHOW TABLE STATS and EXPLAIN commands distinguish between row counts
+ stored in the Hive Metastore, and the row counts extrapolated based on the
+ above process. Consult the SHOW TABLE STATS and EXPLAIN documentation
+ for more details.
+ </p>
+ </div>
+ </article>
+
+ <article class="topic concept nested4" aria-labelledby="ariaid-title9" id="experimental_stats_features__experimental_stats_sampling">
+ <h5 class="title topictitle5" id="ariaid-title9">Sampling</h5>
+ <div class="body conbody">
+ <p class="p">
+ A TABLESAMPLE clause may be added to COMPUTE STATS to limit the
+ percentage of data to be processed. The final statistics are obtained
+ by extrapolating the statistics from the data sample over the entire table.
+ The extrapolated statistics are stored in the Hive Metastore, just as if no
+ sampling was used. The following example runs COMPUTE STATS over a 10 percent
+ data sample: COMPUTE STATS test_table TABLESAMPLE SYSTEM(10)
+ </p>
+ <p class="p">
+ We have found that a 10 percent sampling rate typically offers a good
+ tradeoff between statistics accuracy and execution cost. A sampling rate
+ well below 10 percent has shown poor results and is not recommended.
+ </p>
+ <div class="note important note_important"><span class="note__title importanttitle">Important:</span>
+ Sampling-based techniques sacrifice result accuracy for execution
+ efficiency, so your mileage may vary for different tables and columns
+ depending on their data distribution. The extrapolation procedure Impala
+ uses for estimating the number of distinct values per column is inherently
+ non-detetministic, so your results may even vary between runs of
+ COMPUTE STATS TABLESAMPLE, even if no data has changed.
+ </div>
+ </div>
+ </article>
+ </article>
+ </article>
+
+ <article class="topic concept nested2" aria-labelledby="ariaid-title10" id="perf_generating_stats__concept_bmk_pfl_mdb">
+
+ <h3 class="title topictitle3" id="ariaid-title10">COMPUTE INCREMENTAL STATS</h3>
+
+ <div class="body conbody">
- <li class="li">
- <p class="p">
- If you use an <code class="ph codeph">ALTER TABLE</code> statement to change the file format of a table, the existing
- statistics remain valid and a subsequent <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> does not rescan any
- partitions.
- </p>
- </li>
- </ul>
+ <p class="p">
+ In Impala 2.1.0 and higher, you can use the
+ <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> and
+ <code class="ph codeph">DROP INCREMENTAL STATS</code> commands.
+ The <code class="ph codeph">INCREMENTAL</code> clauses work with incremental statistics,
+ a specialized feature for partitioned tables.
+ </p>
- <p class="p">
- See <a class="xref" href="impala_compute_stats.html#compute_stats">COMPUTE STATS Statement</a> and
- <a class="xref" href="impala_drop_stats.html#drop_stats">DROP STATS Statement</a> for syntax details.
- </p>
- </div>
- </article>
+ <p class="p">
+ When you compute incremental statistics for a partitioned table, by default Impala only
+ processes those partitions that do not yet have incremental statistics. By processing
+ only newly added partitions, you can keep statistics up to date without incurring the
+ overhead of reprocessing the entire table each time.
+ </p>
- <article class="topic concept nested1" aria-labelledby="ariaid-title6" id="perf_stats__perf_stats_computing">
- <h2 class="title topictitle2" id="ariaid-title6">Generating Table and Column Statistics (COMPUTE STATS Statement)</h2>
- <div class="body conbody">
+ <p class="p">
+ You can also compute or drop statistics for a specified subset of partitions by
+ including a <code class="ph codeph">PARTITION</code> clause in the
+ <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> or <code class="ph codeph">DROP INCREMENTAL STATS</code>
+ statement.
+ </p>
- <p class="p">
- To gather table statistics after loading data into a table or partition, you typically use the
- <code class="ph codeph">COMPUTE STATS</code> statement. This statement is available in Impala 1.2.2 and higher.
- It gathers both table statistics and column statistics for all columns in a single operation.
- For large partitioned tables, where you frequently need to update statistics and it is impractical
- to scan the entire table each time, use the syntax <code class="ph codeph">COMPUTE INCREMENTAL STATS</code>,
- which is available in <span class="keyword">Impala 2.1</span> and higher.
+ <div class="note important note_important"><span class="note__title importanttitle">Important:</span>
+ <p class="p">
+ For a table with a huge number of partitions and many columns, the approximately 400 bytes
+ of metadata per column per partition can add up to significant memory overhead, as it must
+ be cached on the <span class="keyword cmdname">catalogd</span> host and on every <span class="keyword cmdname">impalad</span> host
+ that is eligible to be a coordinator. If this metadata for all tables combined exceeds 2 GB,
+ you might experience service downtime.
</p>
-
- <p class="p">
- If you use Hive as part of your ETL workflow, you can also use Hive to generate table and
- column statistics. You might need to do extra configuration within Hive itself, the metastore,
- or even set up a separate database to hold Hive-generated statistics. You might need to run
- multiple statements to generate all the necessary statistics. Therefore, prefer the
- Impala <code class="ph codeph">COMPUTE STATS</code> statement where that technique is practical.
- For details about collecting statistics through Hive, see
- <a class="xref" href="https://cwiki.apache.org/confluence/display/Hive/StatsDev" target="_blank">the Hive wiki</a>.
+ <p class="p">
+ When you run <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> on a table for the first time,
+ the statistics are computed again from scratch regardless of whether the table already
+ has statistics. Therefore, expect a one-time resource-intensive operation
+ for scanning the entire table when running <code class="ph codeph">COMPUTE INCREMENTAL STATS</code>
+ for the first time on a given table.
</p>
+ </div>
- <p class="p">
- If you run the Hive statement <code class="ph codeph">ANALYZE TABLE COMPUTE STATISTICS FOR COLUMNS</code>,
- Impala can only use the resulting column statistics if the table is unpartitioned.
- Impala cannot use Hive-generated column statistics for a partitioned table.
- </p>
+ <p class="p">
+ The metadata for incremental statistics is handled differently from the original style
+ of statistics:
+ </p>
+ <ul class="ul">
+ <li class="li">
+ <p class="p">
+ Issuing a <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> without a partition
+ clause causes Impala to compute incremental stats for all partitions that
+ do not already have incremental stats. This might be the entire table when
+ running the command for the first time, but subsequent runs should only
+ update new partitions. You can force updating a partition that already has
+ incremental stats by issuing a <code class="ph codeph">DROP INCREMENTAL STATS</code>
+ before running <code class="ph codeph">COMPUTE INCREMENTAL STATS</code>.
+ </p>
+ </li>
+
+ <li class="li">
+ <p class="p">
+ The <code class="ph codeph">SHOW TABLE STATS</code> and <code class="ph codeph">SHOW PARTITIONS</code>
+ statements now include an additional column showing whether incremental statistics
+ are available for each column. A partition could already be covered by the original
+ type of statistics based on a prior <code class="ph codeph">COMPUTE STATS</code> statement, as
+ indicated by a value other than <code class="ph codeph">-1</code> under the <code class="ph codeph">#Rows</code>
+ column. Impala query planning uses either kind of statistics when available.
+ </p>
+ </li>
+
+ <li class="li">
+ <p class="p">
+ <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> takes more time than <code class="ph codeph">COMPUTE
+ STATS</code> for the same volume of data. Therefore it is most suitable for tables
+ with large data volume where new partitions are added frequently, making it
+ impractical to run a full <code class="ph codeph">COMPUTE STATS</code> operation for each new
+ partition. For unpartitioned tables, or partitioned tables that are loaded once and
+ not updated with new partitions, use the original <code class="ph codeph">COMPUTE STATS</code>
+ syntax.
+ </p>
+ </li>
+
+ <li class="li">
+ <p class="p">
+ <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> uses some memory in the
+ <span class="keyword cmdname">catalogd</span> process, proportional to the number of partitions and
+ number of columns in the applicable table. The memory overhead is approximately 400
+ bytes for each column in each partition. This memory is reserved in the
+ <span class="keyword cmdname">catalogd</span> daemon, the <span class="keyword cmdname">statestored</span> daemon, and
+ in each instance of the <span class="keyword cmdname">impalad</span> daemon.
+ </p>
+ </li>
+
+ <li class="li">
+ <p class="p">
+ In cases where new files are added to an existing partition, issue a
+ <code class="ph codeph">REFRESH</code> statement for the table, followed by a <code class="ph codeph">DROP
+ INCREMENTAL STATS</code> and <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> sequence
+ for the changed partition.
+ </p>
+ </li>
+
+ <li class="li">
+ <p class="p">
+ The <code class="ph codeph">DROP INCREMENTAL STATS</code> statement operates only on a single
+ partition at a time. To remove statistics (whether incremental or not) from all
+ partitions of a table, issue a <code class="ph codeph">DROP STATS</code> statement with no
+ <code class="ph codeph">INCREMENTAL</code> or <code class="ph codeph">PARTITION</code> clauses.
+ </p>
+ </li>
+ </ul>
+ <p class="p">
+ The following considerations apply to incremental statistics when the structure of an
+ existing table is changed (known as <dfn class="term">schema evolution</dfn>):
+ </p>
- <p class="p">
+ <ul class="ul">
+ <li class="li">
+ <p class="p">
+ If you use an <code class="ph codeph">ALTER TABLE</code> statement to drop a column, the existing
+ statistics remain valid and <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> does not
+ rescan any partitions.
+ </p>
+ </li>
+
+ <li class="li">
+ <p class="p">
+ If you use an <code class="ph codeph">ALTER TABLE</code> statement to add a column, Impala rescans
+ all partitions and fills in the appropriate column-level values the next time you
+ run <code class="ph codeph">COMPUTE INCREMENTAL STATS</code>.
+ </p>
+ </li>
+
+ <li class="li">
+ <p class="p">
+ If you use an <code class="ph codeph">ALTER TABLE</code> statement to change the data type of a
+ column, Impala rescans all partitions and fills in the appropriate column-level
+ values the next time you run <code class="ph codeph">COMPUTE INCREMENTAL STATS</code>.
+ </p>
+ </li>
+
+ <li class="li">
+ <p class="p">
+ If you use an <code class="ph codeph">ALTER TABLE</code> statement to change the file format of a
+ table, the existing statistics remain valid and a subsequent <code class="ph codeph">COMPUTE
+ INCREMENTAL STATS</code> does not rescan any partitions.
+ </p>
+ </li>
+ </ul>
+ <p class="p">
+ See <a class="xref" href="impala_compute_stats.html#compute_stats">COMPUTE STATS Statement</a> and
+ <a class="xref" href="impala_drop_stats.html#drop_stats">DROP STATS Statement</a> for syntax details.
+ </p>
- For your very largest tables, you might find that <code class="ph codeph">COMPUTE STATS</code> or even <code class="ph codeph">COMPUTE INCREMENTAL STATS</code>
- take so long to scan the data that it is impractical to use them regularly. In such a case, after adding a partition or inserting new data,
- you can update just the number of rows property through an <code class="ph codeph">ALTER TABLE</code> statement.
- See <a class="xref" href="impala_perf_stats.html#perf_table_stats_manual">Setting the NUMROWS Value Manually through ALTER TABLE</a> for details.
- Because the column statistics might be left in a stale state, do not use this technique as a replacement
- for <code class="ph codeph">COMPUTE STATS</code>. Only use this technique if all other means of collecting statistics are impractical, or as a
- low-overhead operation that you run in between periodic <code class="ph codeph">COMPUTE STATS</code> or <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> operations.
- </p>
+ </div>
+
+ </article>
- </div>
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title7" id="perf_stats__perf_stats_checking">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title11" id="perf_stats__perf_stats_checking">
- <h2 class="title topictitle2" id="ariaid-title7">Detecting Missing Statistics</h2>
+ <h2 class="title topictitle2" id="ariaid-title11">Detecting Missing Statistics</h2>
<div class="body conbody">
<p class="p">
- You can check whether a specific table has statistics using the <code class="ph codeph">SHOW TABLE STATS</code> statement
- (for any table) or the <code class="ph codeph">SHOW PARTITIONS</code> statement (for a partitioned table). Both
- statements display the same information. If a table or a partition does not have any statistics, the
- <code class="ph codeph">#Rows</code> field contains <code class="ph codeph">-1</code>. Once you compute statistics for the table or
- partition, the <code class="ph codeph">#Rows</code> field changes to an accurate value.
+ You can check whether a specific table has statistics using the <code class="ph codeph">SHOW TABLE
+ STATS</code> statement (for any table) or the <code class="ph codeph">SHOW PARTITIONS</code>
+ statement (for a partitioned table). Both statements display the same information. If a
+ table or a partition does not have any statistics, the <code class="ph codeph">#Rows</code> field
+ contains <code class="ph codeph">-1</code>. Once you compute statistics for the table or partition,
+ the <code class="ph codeph">#Rows</code> field changes to an accurate value.
</p>
<p class="p">
- The following example shows a table that initially does not have any statistics. The <code class="ph codeph">SHOW TABLE
- STATS</code> statement displays different values for <code class="ph codeph">#Rows</code> before and after the
- <code class="ph codeph">COMPUTE STATS</code> operation.
+ The following example shows a table that initially does not have any statistics. The
+ <code class="ph codeph">SHOW TABLE STATS</code> statement displays different values for
+ <code class="ph codeph">#Rows</code> before and after the <code class="ph codeph">COMPUTE STATS</code> operation.
</p>
<pre class="pre codeblock"><code>[localhost:21000] > create table no_stats (x int);
@@ -555,9 +744,10 @@ show column stats year_month_day;
<p class="p">
The following example shows a similar progression with a partitioned table. Initially,
- <code class="ph codeph">#Rows</code> is <code class="ph codeph">-1</code>. After a <code class="ph codeph">COMPUTE STATS</code> operation,
- <code class="ph codeph">#Rows</code> changes to an accurate value. Any newly added partition starts with no statistics,
- meaning that you must collect statistics after adding a new partition.
+ <code class="ph codeph">#Rows</code> is <code class="ph codeph">-1</code>. After a <code class="ph codeph">COMPUTE STATS</code>
+ operation, <code class="ph codeph">#Rows</code> changes to an accurate value. Any newly added
+ partition starts with no statistics, meaning that you must collect statistics after
+ adding a new partition.
</p>
<pre class="pre codeblock"><code>[localhost:21000] > create table no_stats_partitioned (x int) partitioned by (year smallint);
@@ -592,20 +782,22 @@ show column stats year_month_day;
</code></pre>
<div class="note note note_note"><span class="note__title notetitle">Note:</span>
- Because the default <code class="ph codeph">COMPUTE STATS</code> statement creates and updates statistics for all
- partitions in a table, if you expect to frequently add new partitions, use the <code class="ph codeph">COMPUTE INCREMENTAL
- STATS</code> syntax instead, which lets you compute stats for a single specified partition, or only for
- those partitions that do not already have incremental stats.
+ Because the default <code class="ph codeph">COMPUTE STATS</code> statement creates and updates
+ statistics for all partitions in a table, if you expect to frequently add new
+ partitions, use the <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> syntax instead, which
+ lets you compute stats for a single specified partition, or only for those partitions
+ that do not already have incremental stats.
</div>
<p class="p">
- If checking each individual table is impractical, due to a large number of tables or views that hide the
- underlying base tables, you can also check for missing statistics for a particular query. Use the
- <code class="ph codeph">EXPLAIN</code> statement to preview query efficiency before actually running the query. Use the
- query profile output available through the <code class="ph codeph">PROFILE</code> command in
- <span class="keyword cmdname">impala-shell</span> or the web UI to verify query execution and timing after running the query.
- Both the <code class="ph codeph">EXPLAIN</code> plan and the <code class="ph codeph">PROFILE</code> output display a warning if any
- tables or partitions involved in the query do not have statistics.
+ If checking each individual table is impractical, due to a large number of tables or
+ views that hide the underlying base tables, you can also check for missing statistics
+ for a particular query. Use the <code class="ph codeph">EXPLAIN</code> statement to preview query
+ efficiency before actually running the query. Use the query profile output available
+ through the <code class="ph codeph">PROFILE</code> command in <span class="keyword cmdname">impala-shell</span> or the
+ web UI to verify query execution and timing after running the query. Both the
+ <code class="ph codeph">EXPLAIN</code> plan and the <code class="ph codeph">PROFILE</code> output display a warning
+ if any tables or partitions involved in the query do not have statistics.
</p>
<pre class="pre codeblock"><code>[localhost:21000] > create table no_stats (x int);
@@ -631,10 +823,11 @@ show column stats year_month_day;
</code></pre>
<p class="p">
- Because Impala uses the <dfn class="term">partition pruning</dfn> technique when possible to only evaluate certain
- partitions, if you have a partitioned table with statistics for some partitions and not others, whether or
- not the <code class="ph codeph">EXPLAIN</code> statement shows the warning depends on the actual partitions used by the
- query. For example, you might see warnings or not for different queries against the same table:
+ Because Impala uses the <dfn class="term">partition pruning</dfn> technique when possible to only
+ evaluate certain partitions, if you have a partitioned table with statistics for some
+ partitions and not others, whether or not the <code class="ph codeph">EXPLAIN</code> statement shows
+ the warning depends on the actual partitions used by the query. For example, you might
+ see warnings or not for different queries against the same table:
</p>
<pre class="pre codeblock"><code>-- No warning because all the partitions for the year 2012 have stats.
@@ -646,73 +839,36 @@ EXPLAIN SELECT ... FROM t1 WHERE year BETWEEN 2006 AND 2009;
</code></pre>
<p class="p">
- To confirm if any partitions at all in the table are missing statistics, you might explain a query that
- scans the entire table, such as <code class="ph codeph">SELECT COUNT(*) FROM <var class="keyword varname">table_name</var></code>.
- </p>
- </div>
- </article>
-
- <article class="topic concept nested1" aria-labelledby="ariaid-title8" id="perf_stats__perf_stats_collecting">
-
- <h2 class="title topictitle2" id="ariaid-title8">Keeping Statistics Up to Date</h2>
-
- <div class="body conbody">
-
- <p class="p">
- When the contents of a table or partition change significantly, recompute the stats for the relevant table
- or partition. The degree of change that qualifies as <span class="q">"significant"</span> varies, depending on the absolute
- and relative sizes of the tables. Typically, if you add more than 30% more data to a table, it is
- worthwhile to recompute stats, because the differences in number of rows and number of distinct values
- might cause Impala to choose a different join order when that table is used in join queries. This guideline
- is most important for the largest tables. For example, adding 30% new data to a table containing 1 TB has a
- greater effect on join order than adding 30% to a table containing only a few megabytes, and the larger
- table has a greater effect on query performance if Impala chooses a suboptimal join order as a result of
- outdated statistics.
- </p>
-
- <p class="p">
- If you reload a complete new set of data for a table, but the number of rows and number of distinct values
- for each column is relatively unchanged from before, you do not need to recompute stats for the table.
+ To confirm if any partitions at all in the table are missing statistics, you might
+ explain a query that scans the entire table, such as <code class="ph codeph">SELECT COUNT(*) FROM
+ <var class="keyword varname">table_name</var></code>.
</p>
- <p class="p">
- If the statistics for a table are out of date, and the table's large size makes it impractical to recompute
- new stats immediately, you can use the <code class="ph codeph">DROP STATS</code> statement to remove the obsolete
- statistics, making it easier to identify tables that need a new <code class="ph codeph">COMPUTE STATS</code> operation.
- </p>
-
- <p class="p">
- For a large partitioned table, consider using the incremental stats feature available in Impala 2.1.0 and
- higher, as explained in <a class="xref" href="impala_perf_stats.html#perf_stats_incremental">Overview of Incremental Statistics</a>. If you add a new
- partition to a table, it is worthwhile to recompute incremental stats, because the operation only scans the
- data for that one new partition.
- </p>
</div>
- </article>
-
-
-
-
+ </article>
+ <article class="topic concept nested1" aria-labelledby="ariaid-title12" id="perf_stats__concept_s3c_4gl_mdb">
-
+ <h2 class="title topictitle2" id="ariaid-title12">Manually Setting Table and Column Statistics with ALTER TABLE</h2>
- <article class="topic concept nested1" aria-labelledby="ariaid-title9" id="perf_stats__perf_table_stats_manual">
+ <article class="topic concept nested2" aria-labelledby="ariaid-title13" id="concept_s3c_4gl_mdb__concept_wpt_pgl_mdb">
- <h2 class="title topictitle2" id="ariaid-title9">Setting the NUMROWS Value Manually through ALTER TABLE</h2>
+ <h3 class="title topictitle3" id="ariaid-title13">Setting Table Statistics</h3>
- <div class="body conbody">
+ <div class="body conbody">
- <p class="p">
- The most crucial piece of data in all the statistics is the number of rows in the table (for an
- unpartitioned or partitioned table) and for each partition (for a partitioned table). The <code class="ph codeph">COMPUTE STATS</code>
- statement always gathers statistics about all columns, as well as overall table statistics. If it is not
- practical to do a full <code class="ph codeph">COMPUTE STATS</code> or <code class="ph codeph">COMPUTE INCREMENTAL STATS</code>
- operation after adding a partition or inserting data, or if you can see that Impala would produce a more
- efficient plan if the number of rows was different, you can manually set the number of rows through an
- <code class="ph codeph">ALTER TABLE</code> statement:
- </p>
+ <p class="p">
+ The most crucial piece of data in all the statistics is the number of rows in the
+ table (for an unpartitioned or partitioned table) and for each partition (for a
+ partitioned table). The <code class="ph codeph">COMPUTE STATS</code> statement always gathers
+ statistics about all columns, as well as overall table statistics. If it is not
+ practical to do a full <code class="ph codeph">COMPUTE STATS</code> or <code class="ph codeph">COMPUTE INCREMENTAL
+ STATS</code> operation after adding a partition or inserting data, or if you can see
+ that Impala would produce a more efficient plan if the number of rows was different,
+ you can manually set the number of rows through an <code class="ph codeph">ALTER TABLE</code>
+ statement:
+ </p>
<pre class="pre codeblock"><code>
-- Set total number of rows. Applies to both unpartitioned and partitioned tables.
@@ -723,11 +879,13 @@ alter table <var class="keyword varname">table_name</var> set tblproperties('num
alter table <var class="keyword varname">table_name</var> partition (<var class="keyword varname">keycol1</var>=<var class="keyword varname">val1</var>,<var class="keyword varname">keycol2</var>=<var class="keyword varname">val2</var>...) set tblproperties('numRows'='<var class="keyword varname">new_value</var>', 'STATS_GENERATED_VIA_STATS_TASK'='true');
</code></pre>
- <p class="p">
- This statement avoids re-scanning any data files. (The requirement to include the <code class="ph codeph">STATS_GENERATED_VIA_STATS_TASK</code> property is relatively new, as a
- result of the issue <a class="xref" href="https://issues.apache.org/jira/browse/HIVE-8648" target="_blank">HIVE-8648</a>
- for the Hive metastore.)
- </p>
+ <p class="p">
+ This statement avoids re-scanning any data files. (The requirement to include the
+ <code class="ph codeph">STATS_GENERATED_VIA_STATS_TASK</code> property is relatively new, as a
+ result of the issue
+ <a class="xref" href="https://issues.apache.org/jira/browse/HIVE-8648" target="_blank">HIVE-8648</a>
+ for the Hive metastore.)
+ </p>
<pre class="pre codeblock"><code>create table analysis_data stored as parquet as select * from raw_data;
Inserted 1000000000 rows in 181.98s
@@ -737,40 +895,48 @@ Inserted 1000000 rows in 15.32s
-- Now there are 1001000000 rows. We can update this single data point in the stats.
alter table analysis_data set tblproperties('numRows'='1001000000', 'STATS_GENERATED_VIA_STATS_TASK'='true');</code></pre>
- <p class="p">
- For a partitioned table, update both the per-partition number of rows and the number of rows for the whole
- table:
- </p>
+ <p class="p">
+ For a partitioned table, update both the per-partition number of rows and the number
+ of rows for the whole table:
+ </p>
<pre class="pre codeblock"><code>-- If the table originally contained 1 million rows, and we add another partition with 30 thousand rows,
-- change the numRows property for the partition and the overall table.
alter table partitioned_data partition(year=2009, month=4) set tblproperties ('numRows'='30000', 'STATS_GENERATED_VIA_STATS_TASK'='true');
alter table partitioned_data set tblproperties ('numRows'='1030000', 'STATS_GENERATED_VIA_STATS_TASK'='true');</code></pre>
- <p class="p">
- In practice, the <code class="ph codeph">COMPUTE STATS</code> statement, or <code class="ph codeph">COMPUTE INCREMENTAL STATS</code>
- for a partitioned table, should be fast and convenient enough that this technique is only useful for the very
- largest partitioned tables.
-
-
- Because the column statistics might be left in a stale state, do not use this technique as a replacement
- for <code class="ph codeph">COMPUTE STATS</code>. Only use this technique if all other means of collecting statistics are impractical, or as a
- low-overhead operation that you run in between periodic <code class="ph codeph">COMPUTE STATS</code> or <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> operations.
- </p>
- </div>
- </article>
+ <p class="p">
+ In practice, the <code class="ph codeph">COMPUTE STATS</code> statement, or <code class="ph codeph">COMPUTE
+ INCREMENTAL STATS</code> for a partitioned table, should be fast and convenient
+ enough that this technique is only useful for the very largest partitioned tables.
- <article class="topic concept nested1" aria-labelledby="ariaid-title10" id="perf_stats__perf_column_stats_manual">
- <h2 class="title topictitle2" id="ariaid-title10">Setting Column Stats Manually through ALTER TABLE</h2>
- <div class="body conbody">
- <p class="p">
- In <span class="keyword">Impala 2.6</span> and higher, you can also use the <code class="ph codeph">SET COLUMN STATS</code>
- clause of <code class="ph codeph">ALTER TABLE</code> to manually set or change column statistics.
- Only use this technique in cases where it is impractical to run
- <code class="ph codeph">COMPUTE STATS</code> or <code class="ph codeph">COMPUTE INCREMENTAL STATS</code>
- frequently enough to keep up with data changes for a huge table.
- </p>
- <div class="p">
+
+ Because the column statistics might be left in a stale state, do not use this
+ technique as a replacement for <code class="ph codeph">COMPUTE STATS</code>. Only use this technique
+ if all other means of collecting statistics are impractical, or as a low-overhead
+ operation that you run in between periodic <code class="ph codeph">COMPUTE STATS</code> or
+ <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> operations.
+ </p>
+
+ </div>
+
+ </article>
+
+ <article class="topic concept nested2" aria-labelledby="ariaid-title14" id="concept_s3c_4gl_mdb__concept_asb_vgl_mdb">
+
+ <h3 class="title topictitle3" id="ariaid-title14">Setting Column Statistics</h3>
+
+ <div class="body conbody">
+
+ <p class="p">
+ In <span class="keyword">Impala 2.6</span> and higher, you can also use the <code class="ph codeph">SET
+ COLUMN STATS</code> clause of <code class="ph codeph">ALTER TABLE</code> to manually set or change
+ column statistics. Only use this technique in cases where it is impractical to run
+ <code class="ph codeph">COMPUTE STATS</code> or <code class="ph codeph">COMPUTE INCREMENTAL STATS</code>
+ frequently enough to keep up with data changes for a huge table.
+ </p>
+
+ <div class="p">
You specify a case-insensitive symbolic name for the kind of statistics:
<code class="ph codeph">numDVs</code>, <code class="ph codeph">numNulls</code>, <code class="ph codeph">avgSize</code>, <code class="ph codeph">maxSize</code>.
The key names and values are both quoted. This operation applies to an entire table,
@@ -796,30 +962,37 @@ show column stats t1;
+--------+--------+------------------+--------+----------+----------+
</code></pre>
</div>
- </div>
+
+ </div>
+
+ </article>
+
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title11" id="perf_stats__perf_stats_examples">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title15" id="perf_stats__perf_stats_examples">
- <h2 class="title topictitle2" id="ariaid-title11">Examples of Using Table and Column Statistics with Impala</h2>
+ <h2 class="title topictitle2" id="ariaid-title15">Examples of Using Table and Column Statistics with Impala</h2>
<div class="body conbody">
<p class="p">
- The following examples walk through a sequence of <code class="ph codeph">SHOW TABLE STATS</code>, <code class="ph codeph">SHOW COLUMN
- STATS</code>, <code class="ph codeph">ALTER TABLE</code>, and <code class="ph codeph">SELECT</code> and <code class="ph codeph">INSERT</code>
- statements to illustrate various aspects of how Impala uses statistics to help optimize queries.
+ The following examples walk through a sequence of <code class="ph codeph">SHOW TABLE STATS</code>,
+ <code class="ph codeph">SHOW COLUMN STATS</code>, <code class="ph codeph">ALTER TABLE</code>, and
+ <code class="ph codeph">SELECT</code> and <code class="ph codeph">INSERT</code> statements to illustrate various
+ aspects of how Impala uses statistics to help optimize queries.
</p>
<p class="p">
- This example shows table and column statistics for the <code class="ph codeph">STORE</code> column used in the
- <a class="xref" href="http://www.tpc.org/tpcds/" target="_blank">TPC-DS benchmarks for decision
- support</a> systems. It is a tiny table holding data for 12 stores. Initially, before any statistics are
- gathered by a <code class="ph codeph">COMPUTE STATS</code> statement, most of the numeric fields show placeholder values
- of -1, indicating that the figures are unknown. The figures that are filled in are values that are easily
- countable or deducible at the physical level, such as the number of files, total data size of the files,
- and the maximum and average sizes for data types that have a constant size such as <code class="ph codeph">INT</code>,
- <code class="ph codeph">FLOAT</code>, and <code class="ph codeph">TIMESTAMP</code>.
+ This example shows table and column statistics for the <code class="ph codeph">STORE</code> column
+ used in the <a class="xref" href="http://www.tpc.org/tpcds/" target="_blank">TPC-DS
+ benchmarks for decision support</a> systems. It is a tiny table holding data for 12
+ stores. Initially, before any statistics are gathered by a <code class="ph codeph">COMPUTE
+ STATS</code> statement, most of the numeric fields show placeholder values of -1,
+ indicating that the figures are unknown. The figures that are filled in are values that
+ are easily countable or deducible at the physical level, such as the number of files,
+ total data size of the files, and the maximum and average sizes for data types that have
+ a constant size such as <code class="ph codeph">INT</code>, <code class="ph codeph">FLOAT</code>, and
+ <code class="ph codeph">TIMESTAMP</code>.
</p>
<pre class="pre codeblock"><code>[localhost:21000] > show table stats store;
@@ -866,11 +1039,13 @@ Returned 1 row(s) in 0.03s
Returned 29 row(s) in 0.04s</code></pre>
<p class="p">
- With the Hive <code class="ph codeph">ANALYZE TABLE</code> statement for column statistics, you had to specify each
- column for which to gather statistics. The Impala <code class="ph codeph">COMPUTE STATS</code> statement automatically
- gathers statistics for all columns, because it reads through the entire table relatively quickly and can
- efficiently compute the values for all the columns. This example shows how after running the
- <code class="ph codeph">COMPUTE STATS</code> statement, statistics are filled in for both the table and all its columns:
+ With the Hive <code class="ph codeph">ANALYZE TABLE</code> statement for column statistics, you had to
+ specify each column for which to gather statistics. The Impala <code class="ph codeph">COMPUTE
+ STATS</code> statement automatically gathers statistics for all columns, because it
+ reads through the entire table relatively quickly and can efficiently compute the values
+ for all the columns. This example shows how after running the <code class="ph codeph">COMPUTE
+ STATS</code> statement, statistics are filled in for both the table and all its
+ columns:
</p>
<pre class="pre codeblock"><code>[localhost:21000] > compute stats store;
@@ -924,11 +1099,12 @@ Returned 1 row(s) in 0.02s
Returned 29 row(s) in 0.04s</code></pre>
<p class="p">
- The following example shows how statistics are represented for a partitioned table. In this case, we have
- set up a table to hold the world's most trivial census data, a single <code class="ph codeph">STRING</code> field,
- partitioned by a <code class="ph codeph">YEAR</code> column. The table statistics include a separate entry for each
- partition, plus final totals for the numeric fields. The column statistics include some easily deducible
- facts for the partitioning column, such as the number of distinct values (the number of partition
+ The following example shows how statistics are represented for a partitioned table. In
+ this case, we have set up a table to hold the world's most trivial census data, a single
+ <code class="ph codeph">STRING</code> field, partitioned by a <code class="ph codeph">YEAR</code> column. The table
+ statistics include a separate entry for each partition, plus final totals for the
+ numeric fields. The column statistics include some easily deducible facts for the
+ partitioning column, such as the number of distinct values (the number of partition
subdirectories).
</p>
@@ -965,8 +1141,8 @@ Returned 8 row(s) in 0.02s
Returned 2 row(s) in 0.02s</code></pre>
<p class="p">
- The following example shows how the statistics are filled in by a <code class="ph codeph">COMPUTE STATS</code> statement
- in Impala.
+ The following example shows how the statistics are filled in by a <code class="ph codeph">COMPUTE
+ STATS</code> statement in Impala.
</p>
<pre class="pre codeblock"><code>[localhost:21000] > compute stats census;
@@ -1000,13 +1176,17 @@ Returned 8 row(s) in 0.02s
Returned 2 row(s) in 0.02s</code></pre>
<p class="p">
- For examples showing how some queries work differently when statistics are available, see
- <a class="xref" href="impala_perf_joins.html#perf_joins_examples">Examples of Join Order Optimization</a>. You can see how Impala executes a query
- differently in each case by observing the <code class="ph codeph">EXPLAIN</code> output before and after collecting
- statistics. Measure the before and after query times, and examine the throughput numbers in before and
- after <code class="ph codeph">SUMMARY</code> or <code class="ph codeph">PROFILE</code> output, to verify how much the improved plan
- speeds up performance.
+ For examples showing how some queries work differently when statistics are available,
+ see <a class="xref" href="impala_perf_joins.html#perf_joins_examples">Examples of Join Order Optimization</a>. You can see how Impala
+ executes a query differently in each case by observing the <code class="ph codeph">EXPLAIN</code>
+ output before and after collecting statistics. Measure the before and after query times,
+ and examine the throughput numbers in before and after <code class="ph codeph">SUMMARY</code> or
+ <code class="ph codeph">PROFILE</code> output, to verify how much the improved plan speeds up
+ performance.
</p>
+
</div>
+
</article>
-</article></main></body></html>
\ No newline at end of file
+
+</article></main></body></html>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_perf_testing.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_perf_testing.html b/docs/build/html/topics/impala_perf_testing.html
index 6d312dc..1ecf66f 100644
--- a/docs/build/html/topics/impala_perf_testing.html
+++ b/docs/build/html/topics/impala_perf_testing.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_performance.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="performance_testing"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Testing Impala Performance</title></head><body id="performance_testing"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_performance.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="performance_testing"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Testing Impala Performance</title></head><body id="performance_testing"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Testing Impala Performance</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_performance.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_performance.html b/docs/build/html/topics/impala_performance.html
index a8e7efb..7ff8e5c 100644
--- a/docs/build/html/topics/impala_performance.html
+++ b/docs/build/html/topics/impala_performance.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_perf_cookbook.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_perf_joins.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_perf_stats.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_perf_benchmarking.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_perf_resources.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_runtime_filtering.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_perf_hdfs_caching.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_perf_testing.html"><meta name="DC.Relation" scheme="URI" content="../topics/im
pala_explain_plan.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_perf_skew.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="performance"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Tuning Impala for Performance</title></head><body id="performance"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_perf_cookbook.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_perf_joins.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_perf_stats.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_perf_benchmarking.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_perf_resources.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_runtime_filtering.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_perf_hdfs_caching.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_perf_testing.html"><meta name="DC.Relation" scheme="URI" content="../topics/im
pala_explain_plan.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_perf_skew.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="performance"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Tuning Impala for Performance</title></head><body id="performance"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Tuning Impala for Performance</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_planning.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_planning.html b/docs/build/html/topics/impala_planning.html
index d4fe262..cedbd58 100644
--- a/docs/build/html/topics/impala_planning.html
+++ b/docs/build/html/topics/impala_planning.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_prereqs.html#prereqs"><meta name="DC.Relation" scheme="URI" content="../topics/impala_cluster_sizing.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_schema_design.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="planning"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Planning for Impala Deployment</title></head><body id="planning"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_prereqs.html#prereqs"><meta name="DC.Relation" scheme="URI" content="../topics/impala_schema_design.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="planning"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Planning for Impala Deployment</title></head><body id="planning"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Planning for Impala Deployment</h1>
@@ -17,4 +17,4 @@
<p class="p toc"></p>
</div>
-<nav role="navigation" class="related-links"><ul class="ullinks"><li class="link ulchildlink"><strong><a href="../topics/impala_prereqs.html#prereqs">Impala Requirements</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_cluster_sizing.html">Cluster Sizing Guidelines for Impala</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_schema_design.html">Guidelines for Designing Impala Schemas</a></strong><br></li></ul></nav></article></main></body></html>
\ No newline at end of file
+<nav role="navigation" class="related-links"><ul class="ullinks"><li class="link ulchildlink"><strong><a href="../topics/impala_prereqs.html#prereqs">Impala Requirements</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_schema_design.html">Guidelines for Designing Impala Schemas</a></strong><br></li></ul></nav></article></main></body></html>
\ No newline at end of file
[06/15] impala git commit: [DOCS] Add Impala docs from branch 2.x
Posted by mi...@apache.org.
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_new_features.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_new_features.html b/docs/build/html/topics/impala_new_features.html
index 2a92271..155756a 100644
--- a/docs/build/html/topics/impala_new_features.html
+++ b/docs/build/html/topics/impala_new_features.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_release_notes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="new_features"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>New Features in Apache Impala</title></head><body id="new_features"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_release_notes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="new_features"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>New Features in Apache Impala</title></head><body id="new_features"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1"><span class="ph">New Features in Apache Impala</span></h1>
@@ -18,9 +18,26 @@
- <nav role="navigation" class="related-links"><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_release_notes.html">Impala Release Notes</a></div></div></nav><article class="topic concept nested1" aria-labelledby="ariaid-title2" id="new_features__new_features_2110">
+ <nav role="navigation" class="related-links"><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_release_notes.html">Impala Release Notes</a></div></div></nav><article class="topic concept nested1" aria-labelledby="ariaid-title2" id="new_features__new_features_2120">
- <h2 class="title topictitle2" id="ariaid-title2">New Features in <span class="keyword">Impala 2.11</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title2">New Features in <span class="keyword">Impala 2.12</span></h2>
+
+ <div class="body conbody">
+
+ <p class="p">
+ For the full list of issues closed in this release, including the issues
+ marked as <span class="q">"new features"</span> or <span class="q">"improvements"</span>, see the
+ <a class="xref" href="https://impala.apache.org/docs/changelog-2.12.html" target="_blank">changelog for <span class="keyword">Impala 2.12</span></a>.
+ </p>
+
+ </div>
+ </article>
+
+
+
+ <article class="topic concept nested1" aria-labelledby="ariaid-title3" id="new_features__new_features_2110">
+
+ <h2 class="title topictitle2" id="ariaid-title3">New Features in <span class="keyword">Impala 2.11</span></h2>
<div class="body conbody">
@@ -35,9 +52,9 @@
- <article class="topic concept nested1" aria-labelledby="ariaid-title3" id="new_features__new_features_2100">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title4" id="new_features__new_features_2100">
- <h2 class="title topictitle2" id="ariaid-title3">New Features in <span class="keyword">Impala 2.10</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title4">New Features in <span class="keyword">Impala 2.10</span></h2>
<div class="body conbody">
@@ -52,9 +69,9 @@
- <article class="topic concept nested1" aria-labelledby="ariaid-title4" id="new_features__new_features_290">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title5" id="new_features__new_features_290">
- <h2 class="title topictitle2" id="ariaid-title4">New Features in <span class="keyword">Impala 2.9</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title5">New Features in <span class="keyword">Impala 2.9</span></h2>
<div class="body conbody">
@@ -93,9 +110,9 @@
- <article class="topic concept nested1" aria-labelledby="ariaid-title5" id="new_features__new_features_280">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title6" id="new_features__new_features_280">
- <h2 class="title topictitle2" id="ariaid-title5">New Features in <span class="keyword">Impala 2.8</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title6">New Features in <span class="keyword">Impala 2.8</span></h2>
<div class="body conbody">
@@ -464,9 +481,9 @@
- <article class="topic concept nested1" aria-labelledby="ariaid-title6" id="new_features__new_features_270">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title7" id="new_features__new_features_270">
- <h2 class="title topictitle2" id="ariaid-title6">New Features in <span class="keyword">Impala 2.7</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title7">New Features in <span class="keyword">Impala 2.7</span></h2>
<div class="body conbody">
@@ -585,9 +602,9 @@
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title7" id="new_features__new_features_260">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title8" id="new_features__new_features_260">
- <h2 class="title topictitle2" id="ariaid-title7">New Features in <span class="keyword">Impala 2.6</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title8">New Features in <span class="keyword">Impala 2.6</span></h2>
<div class="body conbody">
@@ -684,7 +701,7 @@
Impala can now manually set column statistics,
using the <code class="ph codeph">ALTER TABLE</code> statement with a
<code class="ph codeph">SET COLUMN STATS</code> clause.
- See <a class="xref" href="impala_perf_stats.html#perf_column_stats_manual">Setting Column Stats Manually through ALTER TABLE</a> for details.
+ See <a class="xref" href="impala_perf_stats.html#perf_column_stats_manual">impala_perf_stats.html#perf_column_stats_manual</a> for details.
</p>
</li>
<li class="li">
@@ -905,9 +922,9 @@
- <article class="topic concept nested1" aria-labelledby="ariaid-title8" id="new_features__new_features_250">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title9" id="new_features__new_features_250">
- <h2 class="title topictitle2" id="ariaid-title8">New Features in <span class="keyword">Impala 2.5</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title9">New Features in <span class="keyword">Impala 2.5</span></h2>
<div class="body conbody">
@@ -1311,9 +1328,9 @@
- <article class="topic concept nested1" aria-labelledby="ariaid-title9" id="new_features__new_features_240">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title10" id="new_features__new_features_240">
- <h2 class="title topictitle2" id="ariaid-title9">New Features in <span class="keyword">Impala 2.4</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title10">New Features in <span class="keyword">Impala 2.4</span></h2>
<div class="body conbody">
@@ -1333,9 +1350,9 @@
- <article class="topic concept nested1" aria-labelledby="ariaid-title10" id="new_features__new_features_230">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title11" id="new_features__new_features_230">
- <h2 class="title topictitle2" id="ariaid-title10">New Features in <span class="keyword">Impala 2.3</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title11">New Features in <span class="keyword">Impala 2.3</span></h2>
<div class="body conbody">
@@ -1704,9 +1721,9 @@
- <article class="topic concept nested1" aria-labelledby="ariaid-title11" id="new_features__new_features_220">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title12" id="new_features__new_features_220">
- <h2 class="title topictitle2" id="ariaid-title11">New Features in <span class="keyword">Impala 2.8</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title12">New Features in <span class="keyword">Impala 2.8</span></h2>
<div class="body conbody">
@@ -1950,9 +1967,9 @@
- <article class="topic concept nested1" aria-labelledby="ariaid-title12" id="new_features__new_features_210">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title13" id="new_features__new_features_210">
- <h2 class="title topictitle2" id="ariaid-title12">New Features in <span class="keyword">Impala 2.1</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title13">New Features in <span class="keyword">Impala 2.1</span></h2>
<div class="body conbody">
@@ -2006,9 +2023,9 @@
- <article class="topic concept nested1" aria-labelledby="ariaid-title13" id="new_features__new_features_200">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title14" id="new_features__new_features_200">
- <h2 class="title topictitle2" id="ariaid-title13">New Features in <span class="keyword">Impala 2.0</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title14">New Features in <span class="keyword">Impala 2.0</span></h2>
<div class="body conbody">
@@ -2174,7 +2191,7 @@
Query hints can now use comment notation, <code class="ph codeph">/* +<var class="keyword varname">hint_name</var> */</code> or
<code class="ph codeph">-- +<var class="keyword varname">hint_name</var></code>, at the same places in the query where the hints
enclosed by <code class="ph codeph">[ ]</code> are recognized. This enhancement makes it easier to reuse Impala
- queries on other database systems. See <a class="xref" href="impala_hints.html#hints">Query Hints in Impala SELECT Statements</a> for details.
+ queries on other database systems. See <a class="xref" href="impala_hints.html#hints">Optimizer Hints</a> for details.
</p>
</li>
@@ -2317,9 +2334,9 @@
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title14" id="new_features__new_features_140">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title15" id="new_features__new_features_140">
- <h2 class="title topictitle2" id="ariaid-title14">New Features in <span class="keyword">Impala 1.4</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title15">New Features in <span class="keyword">Impala 1.4</span></h2>
<div class="body conbody">
@@ -2544,9 +2561,7 @@
<li class="li">
<p class="p">
The documentation provides additional guidance for planning tasks. <span class="ph">See
- <a class="xref" href="impala_planning.html#planning">Planning for Impala Deployment</a>.</span> <span class="ph">In particular, see
- <a class="xref" href="impala_cluster_sizing.html#cluster_sizing">Cluster Sizing Guidelines for Impala</a> before you purchase or repurpose hardware for a
- cluster to run Impala.</span>
+ <a class="xref" href="impala_planning.html#planning">Planning for Impala Deployment</a>.</span>
</p>
</li>
@@ -2563,9 +2578,9 @@
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title15" id="new_features__new_features_132">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title16" id="new_features__new_features_132">
- <h2 class="title topictitle2" id="ariaid-title15">New Features in <span class="keyword">Impala 1.3.2</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title16">New Features in <span class="keyword">Impala 1.3.2</span></h2>
<div class="body conbody">
@@ -2578,9 +2593,9 @@
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title16" id="new_features__new_features_131">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title17" id="new_features__new_features_131">
- <h2 class="title topictitle2" id="ariaid-title16">New Features in Impala 1.3.1</h2>
+ <h2 class="title topictitle2" id="ariaid-title17">New Features in Impala 1.3.1</h2>
<div class="body conbody">
@@ -2632,9 +2647,9 @@
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title17" id="new_features__new_features_130">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title18" id="new_features__new_features_130">
- <h2 class="title topictitle2" id="ariaid-title17">New Features in <span class="keyword">Impala 1.3</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title18">New Features in <span class="keyword">Impala 1.3</span></h2>
<div class="body conbody">
@@ -2756,9 +2771,9 @@
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title18" id="new_features__new_features_124">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title19" id="new_features__new_features_124">
- <h2 class="title topictitle2" id="ariaid-title18">New Features in Impala 1.2.4</h2>
+ <h2 class="title topictitle2" id="ariaid-title19">New Features in Impala 1.2.4</h2>
<div class="body conbody">
@@ -2830,9 +2845,9 @@
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title19" id="new_features__new_features_123">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title20" id="new_features__new_features_123">
- <h2 class="title topictitle2" id="ariaid-title19">New Features in Impala 1.2.3</h2>
+ <h2 class="title topictitle2" id="ariaid-title20">New Features in Impala 1.2.3</h2>
<div class="body conbody">
@@ -2847,9 +2862,9 @@
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title20" id="new_features__new_features_122">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title21" id="new_features__new_features_122">
- <h2 class="title topictitle2" id="ariaid-title20">New Features in Impala 1.2.2</h2>
+ <h2 class="title topictitle2" id="ariaid-title21">New Features in Impala 1.2.2</h2>
<div class="body conbody">
@@ -2978,9 +2993,9 @@
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title21" id="new_features__new_features_121">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title22" id="new_features__new_features_121">
- <h2 class="title topictitle2" id="ariaid-title21">New Features in Impala 1.2.1</h2>
+ <h2 class="title topictitle2" id="ariaid-title22">New Features in Impala 1.2.1</h2>
<div class="body conbody">
@@ -3169,9 +3184,9 @@
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title22" id="new_features__new_features_120">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title23" id="new_features__new_features_120">
- <h2 class="title topictitle2" id="ariaid-title22">New Features in Impala 1.2.0 (Beta)</h2>
+ <h2 class="title topictitle2" id="ariaid-title23">New Features in Impala 1.2.0 (Beta)</h2>
<div class="body conbody">
@@ -3334,9 +3349,9 @@
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title23" id="new_features__new_features_111">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title24" id="new_features__new_features_111">
- <h2 class="title topictitle2" id="ariaid-title23">New Features in Impala 1.1.1</h2>
+ <h2 class="title topictitle2" id="ariaid-title24">New Features in Impala 1.1.1</h2>
<div class="body conbody">
@@ -3374,9 +3389,9 @@
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title24" id="new_features__new_features_11">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title25" id="new_features__new_features_11">
- <h2 class="title topictitle2" id="ariaid-title24">New Features in Impala 1.1</h2>
+ <h2 class="title topictitle2" id="ariaid-title25">New Features in Impala 1.1</h2>
<div class="body conbody">
@@ -3508,9 +3523,9 @@
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title25" id="new_features__new_features_101">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title26" id="new_features__new_features_101">
- <h2 class="title topictitle2" id="ariaid-title25">New Features in Impala 1.0.1</h2>
+ <h2 class="title topictitle2" id="ariaid-title26">New Features in Impala 1.0.1</h2>
<div class="body conbody">
@@ -3545,9 +3560,9 @@
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title26" id="new_features__new_features_10">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title27" id="new_features__new_features_10">
- <h2 class="title topictitle2" id="ariaid-title26">New Features in Impala 1.0</h2>
+ <h2 class="title topictitle2" id="ariaid-title27">New Features in Impala 1.0</h2>
<div class="body conbody">
@@ -3581,9 +3596,9 @@
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title27" id="new_features__new_features_07">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title28" id="new_features__new_features_07">
- <h2 class="title topictitle2" id="ariaid-title27">New Features in Version 0.7 of the Impala Beta Release</h2>
+ <h2 class="title topictitle2" id="ariaid-title28">New Features in Version 0.7 of the Impala Beta Release</h2>
<div class="body conbody">
@@ -3636,9 +3651,9 @@
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title28" id="new_features__new_features_06">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title29" id="new_features__new_features_06">
- <h2 class="title topictitle2" id="ariaid-title28">New Features in Version 0.6 of the Impala Beta Release</h2>
+ <h2 class="title topictitle2" id="ariaid-title29">New Features in Version 0.6 of the Impala Beta Release</h2>
<div class="body conbody">
@@ -3674,9 +3689,9 @@
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title29" id="new_features__new_features_05">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title30" id="new_features__new_features_05">
- <h2 class="title topictitle2" id="ariaid-title29">New Features in Version 0.5 of the Impala Beta Release</h2>
+ <h2 class="title topictitle2" id="ariaid-title30">New Features in Version 0.5 of the Impala Beta Release</h2>
<div class="body conbody">
@@ -3697,9 +3712,9 @@
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title30" id="new_features__new_features_04">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title31" id="new_features__new_features_04">
- <h2 class="title topictitle2" id="ariaid-title30">New Features in Version 0.4 of the Impala Beta Release</h2>
+ <h2 class="title topictitle2" id="ariaid-title31">New Features in Version 0.4 of the Impala Beta Release</h2>
<div class="body conbody">
@@ -3729,9 +3744,9 @@
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title31" id="new_features__new_features_03">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title32" id="new_features__new_features_03">
- <h2 class="title topictitle2" id="ariaid-title31">New Features in Version 0.3 of the Impala Beta Release</h2>
+ <h2 class="title topictitle2" id="ariaid-title32">New Features in Version 0.3 of the Impala Beta Release</h2>
<div class="body conbody">
@@ -3754,9 +3769,9 @@
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title32" id="new_features__new_features_02">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title33" id="new_features__new_features_02">
- <h2 class="title topictitle2" id="ariaid-title32">New Features in Version 0.2 of the Impala Beta Release</h2>
+ <h2 class="title topictitle2" id="ariaid-title33">New Features in Version 0.2 of the Impala Beta Release</h2>
<div class="body conbody">
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_num_nodes.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_num_nodes.html b/docs/build/html/topics/impala_num_nodes.html
index 26946cc..b229434 100644
--- a/docs/build/html/topics/impala_num_nodes.html
+++ b/docs/build/html/topics/impala_num_nodes.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="num_nodes"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>NUM_NODES Query Option</title></head><body id="num_nodes"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="num_nodes"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>NUM_NODES Query Option</title></head><body id="num_nodes"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">NUM_NODES Query Option</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_num_scanner_threads.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_num_scanner_threads.html b/docs/build/html/topics/impala_num_scanner_threads.html
index 2bc1f4b..04ca89a 100644
--- a/docs/build/html/topics/impala_num_scanner_threads.html
+++ b/docs/build/html/topics/impala_num_scanner_threads.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="num_scanner_threads"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>NUM_SCANNER_THREADS Query Option</title></head><body id="num_scanner_threads"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="num_scanner_threads"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>NUM_SCANNER_THREADS Query Option</title></head><body id="num_scanner_threads"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">NUM_SCANNER_THREADS Query Option</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_odbc.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_odbc.html b/docs/build/html/topics/impala_odbc.html
index fddd3c8..b28d08d 100644
--- a/docs/build/html/topics/impala_odbc.html
+++ b/docs/build/html/topics/impala_odbc.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_config.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="impala_odbc"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Configuring Impala to Work with ODBC</title></head><body id="impala_odbc"><main role="main"><article role="article" aria-labelledby="impala_odbc__odbc">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_config.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="impala_odbc"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Configuring Impala to Work with ODBC</title></head><body id="impala_odbc"><main role="main"><article role="article" aria-labelledby="impala_odbc__odbc">
<h1 class="title topictitle1" id="impala_odbc__odbc">Configuring Impala to Work with ODBC</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_offset.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_offset.html b/docs/build/html/topics/impala_offset.html
index 13e1897..0b2f736 100644
--- a/docs/build/html/topics/impala_offset.html
+++ b/docs/build/html/topics/impala_offset.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_select.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="offset"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>OFFSET Clause</title></head><body id="offset"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_select.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="offset"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>OFFSET Clause</title></head><body id="offset"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">OFFSET Clause</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_operators.html
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diff --git a/docs/build/html/topics/impala_operators.html b/docs/build/html/topics/impala_operators.html
index 15a4c14..9978f15 100644
--- a/docs/build/html/topics/impala_operators.html
+++ b/docs/build/html/topics/impala_operators.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="
Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="operators"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>SQL Operators</title></head><body id="operators"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="
Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="operators"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>SQL Operators</title></head><body id="operators"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">SQL Operators</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_optimize_partition_key_scans.html
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diff --git a/docs/build/html/topics/impala_optimize_partition_key_scans.html b/docs/build/html/topics/impala_optimize_partition_key_scans.html
index 46192a2..30b8586 100644
--- a/docs/build/html/topics/impala_optimize_partition_key_scans.html
+++ b/docs/build/html/topics/impala_optimize_partition_key_scans.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="optimize_partition_key_scans"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>OPTIMIZE_PARTITION_KEY_SCANS Query Option (Impala 2.5 or higher only)</title></head><body id="optimize_partition_key_scans"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="optimize_partition_key_scans"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>OPTIMIZE_PARTITION_KEY_SCANS Query Option (Impala 2.5 or higher only)</title></head><body id="optimize_partition_key_scans"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">OPTIMIZE_PARTITION_KEY_SCANS Query Option (<span class="keyword">Impala 2.5</span> or higher only)</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_order_by.html
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diff --git a/docs/build/html/topics/impala_order_by.html b/docs/build/html/topics/impala_order_by.html
index 3e4533a..040c6ce 100644
--- a/docs/build/html/topics/impala_order_by.html
+++ b/docs/build/html/topics/impala_order_by.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_select.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="order_by"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>ORDER BY Clause</title></head><body id="order_by"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_select.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="order_by"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>ORDER BY Clause</title></head><body id="order_by"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">ORDER BY Clause</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_parquet.html
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diff --git a/docs/build/html/topics/impala_parquet.html b/docs/build/html/topics/impala_parquet.html
index c9148f8..3a895a3 100644
--- a/docs/build/html/topics/impala_parquet.html
+++ b/docs/build/html/topics/impala_parquet.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_file_formats.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content=
"Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content=
"parquet"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Using the Parquet File Format with Impala Tables</title></head><body id="parquet"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_file_formats.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content=
"Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content=
"parquet"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Using the Parquet File Format with Impala Tables</title></head><body id="parquet"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Using the Parquet File Format with Impala Tables</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_parquet_annotate_strings_utf8.html
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diff --git a/docs/build/html/topics/impala_parquet_annotate_strings_utf8.html b/docs/build/html/topics/impala_parquet_annotate_strings_utf8.html
index 92eaab4..b9d0af6 100644
--- a/docs/build/html/topics/impala_parquet_annotate_strings_utf8.html
+++ b/docs/build/html/topics/impala_parquet_annotate_strings_utf8.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="parquet_annotate_strings_utf8"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>PARQUET_ANNOTATE_STRINGS_UTF8 Query Option (Impala 2.6 or higher only)</title></head><body id="parquet_annotate_strings_utf8"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="parquet_annotate_strings_utf8"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>PARQUET_ANNOTATE_STRINGS_UTF8 Query Option (Impala 2.6 or higher only)</title></head><body id="parquet_annotate_strings_utf8"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">PARQUET_ANNOTATE_STRINGS_UTF8 Query Option (<span class="keyword">Impala 2.6</span> or higher only)</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_parquet_compression_codec.html
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diff --git a/docs/build/html/topics/impala_parquet_compression_codec.html b/docs/build/html/topics/impala_parquet_compression_codec.html
index 7fd4cb3..1455fc4 100644
--- a/docs/build/html/topics/impala_parquet_compression_codec.html
+++ b/docs/build/html/topics/impala_parquet_compression_codec.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="parquet_compression_codec"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>PARQUET_COMPRESSION_CODEC Query Option</title></head><body id="parquet_compression_codec"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="parquet_compression_codec"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>PARQUET_COMPRESSION_CODEC Query Option</title></head><body id="parquet_compression_codec"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">PARQUET_COMPRESSION_CODEC Query Option</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_parquet_fallback_schema_resolution.html
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diff --git a/docs/build/html/topics/impala_parquet_fallback_schema_resolution.html b/docs/build/html/topics/impala_parquet_fallback_schema_resolution.html
index 5c0e18f..28447ae 100644
--- a/docs/build/html/topics/impala_parquet_fallback_schema_resolution.html
+++ b/docs/build/html/topics/impala_parquet_fallback_schema_resolution.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="parquet_fallback_schema_resolution"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>PARQUET_FALLBACK_SCHEMA_RESOLUTION Query Option (Impala 2.6 or higher only)</title></head><body id="parquet_fallback_schema_resolution"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="parquet_fallback_schema_resolution"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>PARQUET_FALLBACK_SCHEMA_RESOLUTION Query Option (Impala 2.6 or higher only)</title></head><body id="parquet_fallback_schema_resolution"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">PARQUET_FALLBACK_SCHEMA_RESOLUTION Query Option (<span class="keyword">Impala 2.6</span> or higher only)</h1>
@@ -8,11 +8,21 @@
<div class="body conbody">
- <p class="p">
+ <div class="p">
- Allows Impala to look up columns within Parquet files by column name, rather than column order,
+ The <code class="ph codeph">PARQUET_FALLBACK_SCHEMA_RESOLUTION</code> query option allows Impala to look
+ up columns within Parquet files by column name, rather than column order,
when necessary.
- </p>
+ The allowed values are:
+ <ul class="ul">
+ <li class="li">
+ POSITION (0)
+ </li>
+ <li class="li">
+ NAME (1)
+ </li>
+ </ul>
+ </div>
<p class="p">
<strong class="ph b">Usage notes:</strong>
@@ -20,15 +30,14 @@
<p class="p">
By default, Impala looks up columns within a Parquet file based on
the order of columns in the table.
- The <code class="ph codeph">name</code> setting for this option enables behavior for Impala queries
- similar to the Hive setting <code class="ph codeph">parquet.column.index.access=false</code>.
+ The <code class="ph codeph">name</code> setting for this option enables behavior for
+ Impala queries similar to the Hive setting <code class="ph codeph">parquet.column.index access=false</code>.
It also allows Impala to query Parquet files created by Hive with the
<code class="ph codeph">parquet.column.index.access=false</code> setting in effect.
</p>
<p class="p">
- <strong class="ph b">Type:</strong> integer or string.
- Allowed values are 0 or <code class="ph codeph">position</code> (default), 1 or <code class="ph codeph">name</code>.
+ <strong class="ph b">Type:</strong> integer or string
</p>
<p class="p">
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_parquet_file_size.html
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diff --git a/docs/build/html/topics/impala_parquet_file_size.html b/docs/build/html/topics/impala_parquet_file_size.html
index 3d54087..4262437 100644
--- a/docs/build/html/topics/impala_parquet_file_size.html
+++ b/docs/build/html/topics/impala_parquet_file_size.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="parquet_file_size"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>PARQUET_FILE_SIZE Query Option</title></head><body id="parquet_file_size"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="parquet_file_size"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>PARQUET_FILE_SIZE Query Option</title></head><body id="parquet_file_size"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">PARQUET_FILE_SIZE Query Option</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_partitioning.html
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diff --git a/docs/build/html/topics/impala_partitioning.html b/docs/build/html/topics/impala_partitioning.html
index 3698638..65b40f2 100644
--- a/docs/build/html/topics/impala_partitioning.html
+++ b/docs/build/html/topics/impala_partitioning.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version"
content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="partitioning"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Partitioning for Impala Tables</title></head><body id="partitioning"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version"
content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="partitioning"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Partitioning for Impala Tables</title></head><body id="partitioning"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Partitioning for Impala Tables</h1>
@@ -370,7 +370,7 @@ insert into weather <strong class="ph b">partition (year=2014, month=04, day)</s
<p class="p">
In queries involving both analytic functions and partitioned tables, partition pruning only occurs for columns named in the <code class="ph codeph">PARTITION BY</code>
clause of the analytic function call. For example, if an analytic function query has a clause such as <code class="ph codeph">WHERE year=2016</code>,
- the way to make the query prune all other <code class="ph codeph">YEAR</code> partitions is to include <code class="ph codeph">PARTITION BY year</code>in the analytic function call;
+ the way to make the query prune all other <code class="ph codeph">YEAR</code> partitions is to include <code class="ph codeph">PARTITION BY year</code> in the analytic function call;
for example, <code class="ph codeph">OVER (PARTITION BY year,<var class="keyword varname">other_columns</var> <var class="keyword varname">other_analytic_clauses</var>)</code>.
</p>
@@ -663,11 +663,11 @@ explain select s from yy2 where year in (select year from yy where year between
<div class="note important note_important"><span class="note__title importanttitle">Important:</span>
<p class="p">
For a particular table, use either <code class="ph codeph">COMPUTE STATS</code> or
- <code class="ph codeph">COMPUTE INCREMENTAL STATS</code>, but never combine the two or alternate
- between them. If you switch from <code class="ph codeph">COMPUTE STATS</code> to
- <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> during the lifetime of a table, or vice
- versa, drop all statistics (by running both <code class="ph codeph">DROP STATS</code> and
- <code class="ph codeph">DROP INCREMENTAL STATS</code>) before making the switch.
+ <code class="ph codeph">COMPUTE INCREMENTAL STATS</code>, but never combine the two or
+ alternate between them. If you switch from <code class="ph codeph">COMPUTE STATS</code> to
+ <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> during the lifetime of a table, or
+ vice versa, drop all statistics by running <code class="ph codeph">DROP STATS</code> before
+ making the switch.
</p>
<p class="p">
When you run <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> on a table for the first time,
@@ -690,7 +690,7 @@ explain select s from yy2 where year in (select year from yy where year between
added or changed since the last <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> statement, rather than the entire
table. It is typically used for tables where a full <code class="ph codeph">COMPUTE STATS</code>
operation takes too long to be practical each time a partition is added or dropped. See
- <a class="xref" href="impala_perf_stats.html#perf_stats_incremental">Overview of Incremental Statistics</a> for full usage details.
+ <a class="xref" href="impala_perf_stats.html#perf_stats_incremental">impala_perf_stats.html#perf_stats_incremental</a> for full usage details.
</p>
<pre class="pre codeblock"><code>-- Initially the table has no incremental stats, as indicated
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_perf_benchmarking.html
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diff --git a/docs/build/html/topics/impala_perf_benchmarking.html b/docs/build/html/topics/impala_perf_benchmarking.html
index 39c9b5b..081e026 100644
--- a/docs/build/html/topics/impala_perf_benchmarking.html
+++ b/docs/build/html/topics/impala_perf_benchmarking.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_performance.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="perf_benchmarks"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Benchmarking Impala Queries</title></head><body id="perf_benchmarks"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_performance.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="perf_benchmarks"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Benchmarking Impala Queries</title></head><body id="perf_benchmarks"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Benchmarking Impala Queries</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_perf_cookbook.html
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diff --git a/docs/build/html/topics/impala_perf_cookbook.html b/docs/build/html/topics/impala_perf_cookbook.html
index 6f158f8..428dbaa 100644
--- a/docs/build/html/topics/impala_perf_cookbook.html
+++ b/docs/build/html/topics/impala_perf_cookbook.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_performance.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="perf_cookbook"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Performance Guidelines and Best Practices</title></head><body id="perf_cookbook"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_performance.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="perf_cookbook"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Performance Guidelines and Best Practices</title></head><body id="perf_cookbook"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Impala Performance Guidelines and Best Practices</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_perf_hdfs_caching.html
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diff --git a/docs/build/html/topics/impala_perf_hdfs_caching.html b/docs/build/html/topics/impala_perf_hdfs_caching.html
index 7962505..b27016a 100644
--- a/docs/build/html/topics/impala_perf_hdfs_caching.html
+++ b/docs/build/html/topics/impala_perf_hdfs_caching.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_performance.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="hdfs_caching"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Using HDFS Caching with Impala (Impala 2.1 or higher only)</title></head><body id="hdfs_caching"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_performance.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="hdfs_caching"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Using HDFS Caching with Impala (Impala 2.1 or higher only)</title></head><body id="hdfs_caching"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Using HDFS Caching with Impala (<span class="keyword">Impala 2.1</span> or higher only)</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_perf_joins.html
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diff --git a/docs/build/html/topics/impala_perf_joins.html b/docs/build/html/topics/impala_perf_joins.html
index 7103616..59bf2d1 100644
--- a/docs/build/html/topics/impala_perf_joins.html
+++ b/docs/build/html/topics/impala_perf_joins.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_performance.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="perf_joins"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Performance Considerations for Join Queries</title></head><body id="perf_joins"><ma
in role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_performance.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="perf_joins"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Performance Considerations for Join Queries</title></head><body id="perf_joins"><ma
in role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Performance Considerations for Join Queries</h1>
@@ -90,7 +90,7 @@
To see which join strategy is used for a particular query, issue an <code class="ph codeph">EXPLAIN</code> statement for
the query. If you find that a query uses a broadcast join when you know through benchmarking that a
partitioned join would be more efficient, or vice versa, add a hint to the query to specify the precise join
- mechanism to use. See <a class="xref" href="impala_hints.html#hints">Query Hints in Impala SELECT Statements</a> for details.
+ mechanism to use. See <a class="xref" href="impala_hints.html#hints">Optimizer Hints</a> for details.
</p>
</div>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_perf_resources.html
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diff --git a/docs/build/html/topics/impala_perf_resources.html b/docs/build/html/topics/impala_perf_resources.html
index 20fdc02..4640a70 100644
--- a/docs/build/html/topics/impala_perf_resources.html
+++ b/docs/build/html/topics/impala_perf_resources.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_performance.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="mem_limits"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Controlling Impala Resource Usage</title></head><body id="mem_limits"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_performance.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="mem_limits"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Controlling Impala Resource Usage</title></head><body id="mem_limits"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Controlling Impala Resource Usage</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_perf_skew.html
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diff --git a/docs/build/html/topics/impala_perf_skew.html b/docs/build/html/topics/impala_perf_skew.html
index c09ce8f..b05a9ba 100644
--- a/docs/build/html/topics/impala_perf_skew.html
+++ b/docs/build/html/topics/impala_perf_skew.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_performance.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="perf_skew"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Detecting and Correcting HDFS Block Skew Conditions</title></head><body id="perf_skew"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_performance.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="perf_skew"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Detecting and Correcting HDFS Block Skew Conditions</title></head><body id="perf_skew"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Detecting and Correcting HDFS Block Skew Conditions</h1>
[14/15] impala git commit: [DOCS] Add Impala docs from branch 2.x
Posted by mi...@apache.org.
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_analytic_functions.html
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diff --git a/docs/build/html/topics/impala_analytic_functions.html b/docs/build/html/topics/impala_analytic_functions.html
index 1662afb..e798427 100644
--- a/docs/build/html/topics/impala_analytic_functions.html
+++ b/docs/build/html/topics/impala_analytic_functions.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Im
pala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="an
alytic_functions"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Analytic Functions</title></head><body id="analytic_functions"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Im
pala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="an
alytic_functions"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Analytic Functions</title></head><body id="analytic_functions"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Impala Analytic Functions</h1>
@@ -126,7 +126,7 @@ window_clause: See <a class="xref" href="#window_clause">Window Clause</a>
<p class="p">
In queries involving both analytic functions and partitioned tables, partition pruning only occurs for columns named in the <code class="ph codeph">PARTITION BY</code>
clause of the analytic function call. For example, if an analytic function query has a clause such as <code class="ph codeph">WHERE year=2016</code>,
- the way to make the query prune all other <code class="ph codeph">YEAR</code> partitions is to include <code class="ph codeph">PARTITION BY year</code>in the analytic function call;
+ the way to make the query prune all other <code class="ph codeph">YEAR</code> partitions is to include <code class="ph codeph">PARTITION BY year</code> in the analytic function call;
for example, <code class="ph codeph">OVER (PARTITION BY year,<var class="keyword varname">other_columns</var> <var class="keyword varname">other_analytic_clauses</var>)</code>.
</p>
@@ -749,7 +749,7 @@ order by kind, ordering desc, name;
<p class="p">
Partitioning by the <code class="ph codeph">X</code> column groups all the duplicate numbers together and returns the
- place each each value within the group; because each value occurs only 1 or 2 times,
+ place each value within the group; because each value occurs only 1 or 2 times,
<code class="ph codeph">DENSE_RANK()</code> designates each <code class="ph codeph">X</code> value as either first or second within its
group.
</p>
@@ -1585,7 +1585,7 @@ insert into animals values ('Fire-breathing dragon', 'Mythical', NULL);
<p class="p">
Partitioning by the <code class="ph codeph">X</code> column groups all the duplicate numbers together and returns the
- place each each value within the group; because each value occurs only 1 or 2 times,
+ place each value within the group; because each value occurs only 1 or 2 times,
<code class="ph codeph">RANK()</code> designates each <code class="ph codeph">X</code> value as either first or second within its
group.
</p>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_appx_count_distinct.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_appx_count_distinct.html b/docs/build/html/topics/impala_appx_count_distinct.html
index 3b9e011..4a36093 100644
--- a/docs/build/html/topics/impala_appx_count_distinct.html
+++ b/docs/build/html/topics/impala_appx_count_distinct.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="appx_count_distinct"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>APPX_COUNT_DISTINCT Query Option (Impala 2.0 or higher only)</title></head><body id="appx_count_distinct"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="appx_count_distinct"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>APPX_COUNT_DISTINCT Query Option (Impala 2.0 or higher only)</title></head><body id="appx_count_distinct"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">APPX_COUNT_DISTINCT Query Option (<span class="keyword">Impala 2.0</span> or higher only)</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_appx_median.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_appx_median.html b/docs/build/html/topics/impala_appx_median.html
index 7cc84a2..a838341 100644
--- a/docs/build/html/topics/impala_appx_median.html
+++ b/docs/build/html/topics/impala_appx_median.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_aggregate_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="appx_median"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>APPX_MEDIAN Function</title></head><body id="appx_median"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_aggregate_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="appx_median"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>APPX_MEDIAN Function</title></head><body id="appx_median"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">APPX_MEDIAN Function</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_array.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_array.html b/docs/build/html/topics/impala_array.html
index 3ccc018..a20ffaa 100644
--- a/docs/build/html/topics/impala_array.html
+++ b/docs/build/html/topics/impala_array.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="array"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>ARRAY Complex Type (Impala 2.3 or higher only)</title></head><body id="array"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="array"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>ARRAY Complex Type (Impala 2.3 or higher only)</title></head><body id="array"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">ARRAY Complex Type (<span class="keyword">Impala 2.3</span> or higher only)</h1>
@@ -118,7 +118,7 @@ type ::= <var class="keyword varname">primitive_type</var> | <var class="keyword
</p>
</li>
<li class="li">
- <p class="p" id="array__d6e3207">
+ <p class="p" id="array__d6e3246">
The maximum length of the column definition for any complex type, including declarations for any nested types,
is 4000 characters.
</p>
@@ -135,7 +135,7 @@ type ::= <var class="keyword varname">primitive_type</var> | <var class="keyword
<strong class="ph b">Kudu considerations:</strong>
</p>
<p class="p">
- Currently, the data types <code class="ph codeph">DECIMAL</code>, <code class="ph codeph">CHAR</code>, <code class="ph codeph">VARCHAR</code>,
+ Currently, the data types <code class="ph codeph">CHAR</code>, <code class="ph codeph">VARCHAR</code>,
<code class="ph codeph">ARRAY</code>, <code class="ph codeph">MAP</code>, and <code class="ph codeph">STRUCT</code> cannot be used with Kudu tables.
</p>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_auditing.html
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diff --git a/docs/build/html/topics/impala_auditing.html b/docs/build/html/topics/impala_auditing.html
index 126f04e..b2af1e2 100644
--- a/docs/build/html/topics/impala_auditing.html
+++ b/docs/build/html/topics/impala_auditing.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_security.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="auditing"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Auditing Impala Operations</title></head><body id="auditing"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_security.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="auditing"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Auditing Impala Operations</title></head><body id="auditing"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Auditing Impala Operations</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_authentication.html
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diff --git a/docs/build/html/topics/impala_authentication.html b/docs/build/html/topics/impala_authentication.html
index 3a334ec..3839b4a 100644
--- a/docs/build/html/topics/impala_authentication.html
+++ b/docs/build/html/topics/impala_authentication.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_security.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_kerberos.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_ldap.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_mixed_security.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_delegation.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="authentication"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Auth
entication</title></head><body id="authentication"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_security.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_kerberos.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_ldap.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_mixed_security.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_delegation.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="authentication"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Auth
entication</title></head><body id="authentication"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Impala Authentication</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_authorization.html
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diff --git a/docs/build/html/topics/impala_authorization.html b/docs/build/html/topics/impala_authorization.html
index e87f9c4..bbc3548 100644
--- a/docs/build/html/topics/impala_authorization.html
+++ b/docs/build/html/topics/impala_authorization.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_security.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="authorization"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Enabling Sentry Authorization for Impala</title></head><body id="authorization"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_security.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="authorization"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Enabling Sentry Authorization for Impala</title></head><body id="authorization"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Enabling Sentry Authorization for Impala</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_avg.html
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diff --git a/docs/build/html/topics/impala_avg.html b/docs/build/html/topics/impala_avg.html
index 1f8cfbe..d860a02 100644
--- a/docs/build/html/topics/impala_avg.html
+++ b/docs/build/html/topics/impala_avg.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_aggregate_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="avg"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>AVG Function</title></head><body id="avg"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_aggregate_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="avg"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>AVG Function</title></head><body id="avg"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">AVG Function</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_avro.html
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diff --git a/docs/build/html/topics/impala_avro.html b/docs/build/html/topics/impala_avro.html
index 42cf762..cf0f4e2 100644
--- a/docs/build/html/topics/impala_avro.html
+++ b/docs/build/html/topics/impala_avro.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_file_formats.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta
name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="avro"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Using the Avro File Format with Impala Tables</title></head><body id="avro"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_file_formats.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta
name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="avro"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Using the Avro File Format with Impala Tables</title></head><body id="avro"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Using the Avro File Format with Impala Tables</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_batch_size.html
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diff --git a/docs/build/html/topics/impala_batch_size.html b/docs/build/html/topics/impala_batch_size.html
index ee7f80e..41d60be 100644
--- a/docs/build/html/topics/impala_batch_size.html
+++ b/docs/build/html/topics/impala_batch_size.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="batch_size"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>BATCH_SIZE Query Option</title></head><body id="batch_size"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="batch_size"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>BATCH_SIZE Query Option</title></head><body id="batch_size"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">BATCH_SIZE Query Option</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_bigint.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_bigint.html b/docs/build/html/topics/impala_bigint.html
index 0b70a9d..eea1af7 100644
--- a/docs/build/html/topics/impala_bigint.html
+++ b/docs/build/html/topics/impala_bigint.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="bigint"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>BIGINT Data Type</title></head><body id="bigint"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="bigint"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>BIGINT Data Type</title></head><body id="bigint"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">BIGINT Data Type</h1>
@@ -31,11 +31,13 @@
<strong class="ph b">Conversions:</strong> Impala automatically converts to a floating-point type (<code class="ph codeph">FLOAT</code> or
<code class="ph codeph">DOUBLE</code>) automatically. Use <code class="ph codeph">CAST()</code> to convert to <code class="ph codeph">TINYINT</code>,
<code class="ph codeph">SMALLINT</code>, <code class="ph codeph">INT</code>, <code class="ph codeph">STRING</code>, or <code class="ph codeph">TIMESTAMP</code>.
- <span class="ph">Casting an integer or floating-point value <code class="ph codeph">N</code> to
+ <span class="ph">
+ Casting an integer or floating-point value <code class="ph codeph">N</code> to
<code class="ph codeph">TIMESTAMP</code> produces a value that is <code class="ph codeph">N</code> seconds past the start of the epoch
date (January 1, 1970). By default, the result value represents a date and time in the UTC time zone.
- If the setting <code class="ph codeph">-use_local_tz_for_unix_timestamp_conversions=true</code> is in effect,
- the resulting <code class="ph codeph">TIMESTAMP</code> represents a date and time in the local time zone.</span>
+ If the setting <code class="ph codeph">--use_local_tz_for_unix_timestamp_conversions=true</code> is in effect,
+ the resulting <code class="ph codeph">TIMESTAMP</code> represents a date and time in the local time zone.
+ </span>
</p>
<p class="p">
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_bit_functions.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_bit_functions.html b/docs/build/html/topics/impala_bit_functions.html
index 5d36c3d..6aa878a 100644
--- a/docs/build/html/topics/impala_bit_functions.html
+++ b/docs/build/html/topics/impala_bit_functions.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="bit_functions"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Bit Functions</title></head><body id="bit_functions"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="bit_functions"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Bit Functions</title></head><body id="bit_functions"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Impala Bit Functions</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_boolean.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_boolean.html b/docs/build/html/topics/impala_boolean.html
index 3c74ef5..d702a16 100644
--- a/docs/build/html/topics/impala_boolean.html
+++ b/docs/build/html/topics/impala_boolean.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="boolean"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>BOOLEAN Data Type</title></head><body id="boolean"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="boolean"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>BOOLEAN Data Type</title></head><body id="boolean"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">BOOLEAN Data Type</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_breakpad.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_breakpad.html b/docs/build/html/topics/impala_breakpad.html
index 1653563..e1e6526 100644
--- a/docs/build/html/topics/impala_breakpad.html
+++ b/docs/build/html/topics/impala_breakpad.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_troubleshooting.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="breakpad"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Breakpad Minidumps for Impala (Impala 2.6 or higher only)</title></head><body id="breakpad"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_troubleshooting.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="breakpad"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Breakpad Minidumps for Impala (Impala 2.6 or higher only)</title></head><body id="breakpad"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Breakpad Minidumps for Impala (<span class="keyword">Impala 2.6</span> or higher only)</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_buffer_pool_limit.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_buffer_pool_limit.html b/docs/build/html/topics/impala_buffer_pool_limit.html
index 44f4808..5baa799 100644
--- a/docs/build/html/topics/impala_buffer_pool_limit.html
+++ b/docs/build/html/topics/impala_buffer_pool_limit.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="buffer_pool_limit"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>BUFFER_POOL_LIMIT Query Option</title></head><body id="buffer_pool_limit"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="buffer_pool_limit"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>BUFFER_POOL_LIMIT Query Option</title></head><body id="buffer_pool_limit"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">BUFFER_POOL_LIMIT Query Option</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_char.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_char.html b/docs/build/html/topics/impala_char.html
index 281a07c..f8b3a6e 100644
--- a/docs/build/html/topics/impala_char.html
+++ b/docs/build/html/topics/impala_char.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="char"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>CHAR Data Type (Impala 2.0 or higher only)</title></head><body id="char"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="char"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>CHAR Data Type (Impala 2.0 or higher only)</title></head><body id="char"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">CHAR Data Type (<span class="keyword">Impala 2.0</span> or higher only)</h1>
@@ -240,7 +240,7 @@ select concat('[',a,']') as a, concat('[',b,']') as b, concat('[',c,']') as c fr
<strong class="ph b">Kudu considerations:</strong>
</p>
<p class="p">
- Currently, the data types <code class="ph codeph">DECIMAL</code>, <code class="ph codeph">CHAR</code>, <code class="ph codeph">VARCHAR</code>,
+ Currently, the data types <code class="ph codeph">CHAR</code>, <code class="ph codeph">VARCHAR</code>,
<code class="ph codeph">ARRAY</code>, <code class="ph codeph">MAP</code>, and <code class="ph codeph">STRUCT</code> cannot be used with Kudu tables.
</p>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_cluster_sizing.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_cluster_sizing.html b/docs/build/html/topics/impala_cluster_sizing.html
deleted file mode 100644
index 1bd5c97..0000000
--- a/docs/build/html/topics/impala_cluster_sizing.html
+++ /dev/null
@@ -1,318 +0,0 @@
-<!DOCTYPE html
- SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_planning.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="cluster_sizing"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Cluster Sizing Guidelines for Impala</title></head><body id="cluster_sizing"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
-
- <h1 class="title topictitle1" id="ariaid-title1">Cluster Sizing Guidelines for Impala</h1>
-
-
-
- <div class="body conbody">
-
- <p class="p">
-
- This document provides a very rough guideline to estimate the size of a cluster needed for a specific
- customer application. You can use this information when planning how much and what type of hardware to
- acquire for a new cluster, or when adding Impala workloads to an existing cluster.
- </p>
-
- <div class="note note note_note"><span class="note__title notetitle">Note:</span>
- Before making purchase or deployment decisions, consult organizations with relevant experience
- to verify the conclusions about hardware requirements based on your data volume and workload.
- </div>
-
-
-
- <p class="p">
- Always use hosts with identical specifications and capacities for all the nodes in the cluster. Currently,
- Impala divides the work evenly between cluster nodes, regardless of their exact hardware configuration.
- Because work can be distributed in different ways for different queries, if some hosts are overloaded
- compared to others in terms of CPU, memory, I/O, or network, you might experience inconsistent performance
- and overall slowness
- </p>
-
- <p class="p">
- For analytic workloads with star/snowflake schemas, and using consistent hardware for all nodes (64 GB RAM,
- 12 2 TB hard drives, 2x E5-2630L 12 cores total, 10 GB network), the following table estimates the number of
- DataNodes needed in the cluster based on data size and the number of concurrent queries, for workloads
- similar to TPC-DS benchmark queries:
- </p>
-
- <table class="table"><caption><span class="table--title-label">Table 1. </span><span class="title">Cluster size estimation based on the number of concurrent queries and data size with a 20 second average query response time</span></caption><colgroup><col><col><col><col><col><col></colgroup><thead class="thead">
- <tr class="row">
- <th class="entry nocellnorowborder" id="cluster_sizing__entry__1">
- Data Size
- </th>
- <th class="entry nocellnorowborder" id="cluster_sizing__entry__2">
- 1 query
- </th>
- <th class="entry nocellnorowborder" id="cluster_sizing__entry__3">
- 10 queries
- </th>
- <th class="entry nocellnorowborder" id="cluster_sizing__entry__4">
- 100 queries
- </th>
- <th class="entry nocellnorowborder" id="cluster_sizing__entry__5">
- 1000 queries
- </th>
- <th class="entry nocellnorowborder" id="cluster_sizing__entry__6">
- 2000 queries
- </th>
- </tr>
- </thead><tbody class="tbody">
- <tr class="row">
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__1 ">
- <strong class="ph b">250 GB</strong>
- </td>
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__2 ">
- 2
- </td>
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__3 ">
- 2
- </td>
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__4 ">
- 5
- </td>
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__5 ">
- 35
- </td>
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__6 ">
- 70
- </td>
- </tr>
- <tr class="row">
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__1 ">
- <strong class="ph b">500 GB</strong>
- </td>
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__2 ">
- 2
- </td>
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__3 ">
- 2
- </td>
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__4 ">
- 10
- </td>
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__5 ">
- 70
- </td>
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__6 ">
- 135
- </td>
- </tr>
- <tr class="row">
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__1 ">
- <strong class="ph b">1 TB</strong>
- </td>
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__2 ">
- 2
- </td>
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__3 ">
- 2
- </td>
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__4 ">
- 15
- </td>
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__5 ">
- 135
- </td>
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__6 ">
- 270
- </td>
- </tr>
- <tr class="row">
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__1 ">
- <strong class="ph b">15 TB</strong>
- </td>
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__2 ">
- 2
- </td>
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__3 ">
- 20
- </td>
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__4 ">
- 200
- </td>
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__5 ">
- N/A
- </td>
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__6 ">
- N/A
- </td>
- </tr>
- <tr class="row">
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__1 ">
- <strong class="ph b">30 TB</strong>
- </td>
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__2 ">
- 4
- </td>
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__3 ">
- 40
- </td>
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__4 ">
- 400
- </td>
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__5 ">
- N/A
- </td>
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__6 ">
- N/A
- </td>
- </tr>
- <tr class="row">
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__1 ">
- <strong class="ph b">60 TB</strong>
- </td>
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__2 ">
- 8
- </td>
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__3 ">
- 80
- </td>
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__4 ">
- 800
- </td>
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__5 ">
- N/A
- </td>
- <td class="entry nocellnorowborder" headers="cluster_sizing__entry__6 ">
- N/A
- </td>
- </tr>
- </tbody></table>
-
- <section class="section" id="cluster_sizing__sizing_factors"><h2 class="title sectiontitle">Factors Affecting Scalability</h2>
-
-
-
- <p class="p">
- A typical analytic workload (TPC-DS style queries) using recommended hardware is usually CPU-bound. Each
- node can process roughly 1.6 GB/sec. Both CPU-bound and disk-bound workloads can scale almost linearly with
- cluster size. However, for some workloads, the scalability might be bounded by the network, or even by
- memory.
- </p>
-
- <p class="p">
- If the workload is already network bound (on a 10 GB network), increasing the cluster size won’t reduce
- the network load; in fact, a larger cluster could increase network traffic because some queries involve
- <span class="q">"broadcast"</span> operations to all DataNodes. Therefore, boosting the cluster size does not improve query
- throughput in a network-constrained environment.
- </p>
-
- <p class="p">
- Let’s look at a memory-bound workload. A workload is memory-bound if Impala cannot run any additional
- concurrent queries because all memory allocated has already been consumed, but neither CPU, disk, nor
- network is saturated yet. This can happen because currently Impala uses only a single core per node to
- process join and aggregation queries. For a node with 128 GB of RAM, if a join node takes 50 GB, the system
- cannot run more than 2 such queries at the same time.
- </p>
-
- <p class="p">
- Therefore, at most 2 cores are used. Throughput can still scale almost linearly even for a memory-bound
- workload. It’s just that the CPU will not be saturated. Per-node throughput will be lower than 1.6
- GB/sec. Consider increasing the memory per node.
- </p>
-
- <p class="p">
- As long as the workload is not network- or memory-bound, we can use the 1.6 GB/second per node as the
- throughput estimate.
- </p>
- </section>
-
- <section class="section" id="cluster_sizing__sizing_details"><h2 class="title sectiontitle">A More Precise Approach</h2>
-
-
-
- <p class="p">
- A more precise sizing estimate would require not only queries per minute (QPM), but also an average data
- size scanned per query (D). With the proper partitioning strategy, D is usually a fraction of the total
- data size. The following equation can be used as a rough guide to estimate the number of nodes (N) needed:
- </p>
-
-<pre class="pre codeblock"><code>Eq 1: N > QPM * D / 100 GB
-</code></pre>
-
- <p class="p">
- Here is an example. Suppose, on average, a query scans 50 GB of data and the average response time is
- required to be 15 seconds or less when there are 100 concurrent queries. The QPM is 100/15*60 = 400. We can
- estimate the number of node using our equation above.
- </p>
-
-<pre class="pre codeblock"><code>N > QPM * D / 100GB
-N > 400 * 50GB / 100GB
-N > 200
-</code></pre>
-
- <p class="p">
- Because this figure is a rough estimate, the corresponding number of nodes could be between 100 and 500.
- </p>
-
- <p class="p">
- Depending on the complexity of the query, the processing rate of query might change. If the query has more
- joins, aggregation functions, or CPU-intensive functions such as string processing or complex UDFs, the
- process rate will be lower than 1.6 GB/second per node. On the other hand, if the query only does scan and
- filtering on numbers, the processing rate can be higher.
- </p>
- </section>
-
- <section class="section" id="cluster_sizing__sizing_mem_estimate"><h2 class="title sectiontitle">Estimating Memory Requirements</h2>
-
-
-
-
- <p class="p">
- Impala can handle joins between multiple large tables. Make sure that statistics are collected for all the
- joined tables, using the <code class="ph codeph"><a class="xref" href="impala_compute_stats.html#compute_stats">COMPUTE
- STATS</a></code> statement. However, joining big tables does consume more memory. Follow the steps
- below to calculate the minimum memory requirement.
- </p>
-
- <p class="p">
- Suppose you are running the following join:
- </p>
-
-<pre class="pre codeblock"><code>select a.*, b.col_1, b.col_2, … b.col_n
-from a, b
-where a.key = b.key
-and b.col_1 in (1,2,4...)
-and b.col_4 in (....);
-</code></pre>
-
- <p class="p">
- And suppose table <code class="ph codeph">B</code> is smaller than table <code class="ph codeph">A</code> (but still a large table).
- </p>
-
- <p class="p">
- The memory requirement for the query is the right-hand table (<code class="ph codeph">B</code>), after decompression,
- filtering (<code class="ph codeph">b.col_n in ...</code>) and after projection (only using certain columns) must be less
- than the total memory of the entire cluster.
- </p>
-
-<pre class="pre codeblock"><code>Cluster Total Memory Requirement = Size of the smaller table *
- selectivity factor from the predicate *
- projection factor * compression ratio
-</code></pre>
-
- <p class="p">
- In this case, assume that table <code class="ph codeph">B</code> is 100 TB in Parquet format with 200 columns. The
- predicate on <code class="ph codeph">B</code> (<code class="ph codeph">b.col_1 in ...and b.col_4 in ...</code>) will select only 10% of
- the rows from <code class="ph codeph">B</code> and for projection, we are only projecting 5 columns out of 200 columns.
- Usually, Snappy compression gives us 3 times compression, so we estimate a 3x compression factor.
- </p>
-
-<pre class="pre codeblock"><code>Cluster Total Memory Requirement = Size of the smaller table *
- selectivity factor from the predicate *
- projection factor * compression ratio
- = 100TB * 10% * 5/200 * 3
- = 0.75TB
- = 750GB
-</code></pre>
-
- <p class="p">
- So, if you have a 10-node cluster, each node has 128 GB of RAM and you give 80% to Impala, then you have 1
- TB of usable memory for Impala, which is more than 750GB. Therefore, your cluster can handle join queries
- of this magnitude.
- </p>
- </section>
- </div>
-<nav role="navigation" class="related-links"><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_planning.html">Planning for Impala Deployment</a></div></div></nav></article></main></body></html>
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_comments.html
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diff --git a/docs/build/html/topics/impala_comments.html b/docs/build/html/topics/impala_comments.html
index 547f292..1db7a5f 100644
--- a/docs/build/html/topics/impala_comments.html
+++ b/docs/build/html/topics/impala_comments.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="comments"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Comments</title></head><body id="comments"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="comments"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Comments</title></head><body id="comments"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Comments</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_complex_types.html
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diff --git a/docs/build/html/topics/impala_complex_types.html b/docs/build/html/topics/impala_complex_types.html
index ebaaa88..1920363 100644
--- a/docs/build/html/topics/impala_complex_types.html
+++ b/docs/build/html/topics/impala_complex_types.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="complex_types"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Complex Types (Impala 2.3 or higher only)</title></head><body id="complex_types"><main role="main"><article role="article" aria-labelledby="complex_types__nested_types">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="complex_types"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Complex Types (Impala 2.3 or higher only)</title></head><body id="complex_types"><main role="main"><article role="article" aria-labelledby="complex_types__nested_types">
<h1 class="title topictitle1" id="complex_types__nested_types">Complex Types (<span class="keyword">Impala 2.3</span> or higher only)</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_components.html
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diff --git a/docs/build/html/topics/impala_components.html b/docs/build/html/topics/impala_components.html
index 5a20f4e..c6ee7fb 100644
--- a/docs/build/html/topics/impala_components.html
+++ b/docs/build/html/topics/impala_components.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_concepts.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="intro_components"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Components of the Impala Server</title></head><body id="intro_components"><main
role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_concepts.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="intro_components"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Components of the Impala Server</title></head><body id="intro_components"><main
role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Components of the Impala Server</h1>
@@ -119,7 +119,7 @@
<p class="p">
The Impala component known as the <dfn class="term">catalog service</dfn> relays the metadata changes from Impala SQL
- statements to all the DataNodes in a cluster. It is physically represented by a daemon process named
+ statements to all the Impala daemons in a cluster. It is physically represented by a daemon process named
<code class="ph codeph">catalogd</code>; you only need such a process on one host in the cluster. Because the requests
are passed through the statestore daemon, it makes sense to run the <span class="keyword cmdname">statestored</span> and
<span class="keyword cmdname">catalogd</span> services on the same host.
@@ -162,12 +162,41 @@
</li>
</ul>
- <p class="p">
- By default, the metadata loading and caching on startup happens asynchronously, so Impala can begin
- accepting requests promptly. To enable the original behavior, where Impala waited until all metadata was
- loaded before accepting any requests, set the <span class="keyword cmdname">catalogd</span> configuration option
- <code class="ph codeph">--load_catalog_in_background=false</code>.
- </p>
+ <div class="p">
+ Use <code class="ph codeph">--load_catalog_in_background</code> option to control when
+ the metadata of a table is loaded.
+ <ul class="ul">
+ <li class="li">
+ If set to <code class="ph codeph">false</code>, the metadata of a table is
+ loaded when it is referenced for the first time. This means that the
+ first run of a particular query can be slower than subsequent runs.
+ Starting in Impala 2.2, the default for
+ <code class="ph codeph">load_catalog_in_background</code> is
+ <code class="ph codeph">false</code>.
+ </li>
+ <li class="li">
+ If set to <code class="ph codeph">true</code>, the catalog service attempts to
+ load metadata for a table even if no query needed that metadata. So
+ metadata will possibly be already loaded when the first query that
+ would need it is run. However, for the following reasons, we
+ recommend not to set the option to <code class="ph codeph">true</code>.
+ <ul class="ul">
+ <li class="li">
+ Background load can interfere with query-specific metadata
+ loading. This can happen on startup or after invalidating
+ metadata, with a duration depending on the amount of metadata,
+ and can lead to a seemingly random long running queries that are
+ difficult to diagnose.
+ </li>
+ <li class="li">
+ Impala may load metadata for tables that are possibly never
+ used, potentially increasing catalog size and consequently memory
+ usage for both catalog service and Impala Daemon.
+ </li>
+ </ul>
+ </li>
+ </ul>
+ </div>
<p class="p">
Most considerations for load balancing and high availability apply to the <span class="keyword cmdname">impalad</span> daemon.
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_compression_codec.html
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diff --git a/docs/build/html/topics/impala_compression_codec.html b/docs/build/html/topics/impala_compression_codec.html
index b4aefea..2251cfa 100644
--- a/docs/build/html/topics/impala_compression_codec.html
+++ b/docs/build/html/topics/impala_compression_codec.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="compression_codec"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>COMPRESSION_CODEC Query Option (Impala 2.0 or higher only)</title></head><body id="compression_codec"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="compression_codec"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>COMPRESSION_CODEC Query Option (Impala 2.0 or higher only)</title></head><body id="compression_codec"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">COMPRESSION_CODEC Query Option (<span class="keyword">Impala 2.0</span> or higher only)</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_compute_stats.html
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diff --git a/docs/build/html/topics/impala_compute_stats.html b/docs/build/html/topics/impala_compute_stats.html
index 040f90e..1ee09e0 100644
--- a/docs/build/html/topics/impala_compute_stats.html
+++ b/docs/build/html/topics/impala_compute_stats.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="compute_stats"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>COMPUTE STATS Statement</title></head><body id="compute_stats"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="compute_stats"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>COMPUTE STATS Statement</title></head><body id="compute_stats"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">COMPUTE STATS Statement</h1>
@@ -9,19 +9,25 @@
<div class="body conbody">
<p class="p">
-
- Gathers information about volume and distribution of data in a table and all associated columns and
- partitions. The information is stored in the metastore database, and used by Impala to help optimize queries.
- For example, if Impala can determine that a table is large or small, or has many or few distinct values it
- can organize parallelize the work appropriately for a join query or insert operation. For details about the
- kinds of information gathered by this statement, see <a class="xref" href="impala_perf_stats.html#perf_stats">Table and Column Statistics</a>.
+ The
+ COMPUTE STATS statement gathers information about volume and distribution
+ of data in a table and all associated columns and partitions. The
+ information is stored in the metastore database, and used by Impala to
+ help optimize queries. For example, if Impala can determine that a table
+ is large or small, or has many or few distinct values it can organize and
+ parallelize the work appropriately for a join query or insert operation.
+ For details about the kinds of information gathered by this statement, see
+ <a class="xref" href="impala_perf_stats.html#perf_stats">Table and Column Statistics</a>.
</p>
<p class="p">
<strong class="ph b">Syntax:</strong>
</p>
-<pre class="pre codeblock"><code>COMPUTE STATS [<var class="keyword varname">db_name</var>.]<var class="keyword varname">table_name</var>
+<pre class="pre codeblock"><code><span class="ph">COMPUTE STATS [<var class="keyword varname">db_name</var>.]<var class="keyword varname">table_name</var> [ ( <var class="keyword varname">column_list</var> ) ] [TABLESAMPLE SYSTEM(<var class="keyword varname">percentage</var>) [REPEATABLE(<var class="keyword varname">seed</var>)]]</span>
+
+<var class="keyword varname">column_list</var> ::= <var class="keyword varname">column_name</var> [ , <var class="keyword varname">column_name</var>, ... ]
+
COMPUTE INCREMENTAL STATS [<var class="keyword varname">db_name</var>.]<var class="keyword varname">table_name</var> [PARTITION (<var class="keyword varname">partition_spec</var>)]
<var class="keyword varname">partition_spec</var> ::= <var class="keyword varname">simple_partition_spec</var> | <span class="ph"><var class="keyword varname">complex_partition_spec</var></span>
@@ -45,30 +51,70 @@ COMPUTE INCREMENTAL STATS [<var class="keyword varname">db_name</var>.]<var clas
</p>
<p class="p">
- Originally, Impala relied on users to run the Hive <code class="ph codeph">ANALYZE TABLE</code> statement, but that method
- of gathering statistics proved unreliable and difficult to use. The Impala <code class="ph codeph">COMPUTE STATS</code>
- statement is built from the ground up to improve the reliability and user-friendliness of this operation.
- <code class="ph codeph">COMPUTE STATS</code> does not require any setup steps or special configuration. You only run a
- single Impala <code class="ph codeph">COMPUTE STATS</code> statement to gather both table and column statistics, rather
- than separate Hive <code class="ph codeph">ANALYZE TABLE</code> statements for each kind of statistics.
+ Originally, Impala relied on users to run the Hive <code class="ph codeph">ANALYZE
+ TABLE</code> statement, but that method of gathering statistics proved
+ unreliable and difficult to use. The Impala <code class="ph codeph">COMPUTE STATS</code>
+ statement was built to improve the reliability and user-friendliness of
+ this operation. <code class="ph codeph">COMPUTE STATS</code> does not require any setup
+ steps or special configuration. You only run a single Impala
+ <code class="ph codeph">COMPUTE STATS</code> statement to gather both table and column
+ statistics, rather than separate Hive <code class="ph codeph">ANALYZE TABLE</code>
+ statements for each kind of statistics.
+ </p>
+
+ <p class="p">
+ For non-incremental <code class="ph codeph">COMPUTE STATS</code>
+ statement, the columns for which statistics are computed can be specified
+ with an optional comma-separate list of columns.
+ </p>
+
+ <p class="p">
+ If no column list is given, the <code class="ph codeph">COMPUTE STATS</code> statement
+ computes column-level statistics for all columns of the table. This adds
+ potentially unneeded work for columns whose stats are not needed by
+ queries. It can be especially costly for very wide tables and unneeded
+ large string fields.
+ </p>
+ <p class="p">
+ <code class="ph codeph">COMPUTE STATS</code> returns an error when a specified column
+ cannot be analyzed, such as when the column does not exist, the column is
+ of an unsupported type for COMPUTE STATS, e.g. colums of complex types,
+ or the column is a partitioning column.
+
+ </p>
+ <p class="p">
+ If an empty column list is given, no column is analyzed by <code class="ph codeph">COMPUTE
+ STATS</code>.
+ </p>
+
+ <p class="p">
+ In <span class="keyword">Impala 2.12</span> and
+ higher, an optional <code class="ph codeph">TABLESAMPLE</code> clause immediately after
+ a table reference specifies that the <code class="ph codeph">COMPUTE STATS</code>
+ operation only processes a specified percentage of the table data. For
+ tables that are so large that a full <code class="ph codeph">COMPUTE STATS</code>
+ operation is impractical, you can use <code class="ph codeph">COMPUTE STATS</code> with
+ a <code class="ph codeph">TABLESAMPLE</code> clause to extrapolate statistics from a
+ sample of the table data. See <a href="impala_perf_stats.html"><span class="keyword">Table and Column Statistics</span></a>about the
+ experimental stats extrapolation and sampling features.
</p>
<p class="p">
The <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> variation is a shortcut for partitioned tables that works on a
subset of partitions rather than the entire table. The incremental nature makes it suitable for large tables
with many partitions, where a full <code class="ph codeph">COMPUTE STATS</code> operation takes too long to be practical
- each time a partition is added or dropped. See <a class="xref" href="impala_perf_stats.html#perf_stats_incremental">Overview of Incremental Statistics</a>
+ each time a partition is added or dropped. See <a class="xref" href="impala_perf_stats.html#perf_stats_incremental">impala_perf_stats.html#perf_stats_incremental</a>
for full usage details.
</p>
<div class="note important note_important"><span class="note__title importanttitle">Important:</span>
<p class="p">
For a particular table, use either <code class="ph codeph">COMPUTE STATS</code> or
- <code class="ph codeph">COMPUTE INCREMENTAL STATS</code>, but never combine the two or alternate
- between them. If you switch from <code class="ph codeph">COMPUTE STATS</code> to
- <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> during the lifetime of a table, or vice
- versa, drop all statistics (by running both <code class="ph codeph">DROP STATS</code> and
- <code class="ph codeph">DROP INCREMENTAL STATS</code>) before making the switch.
+ <code class="ph codeph">COMPUTE INCREMENTAL STATS</code>, but never combine the two or
+ alternate between them. If you switch from <code class="ph codeph">COMPUTE STATS</code> to
+ <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> during the lifetime of a table, or
+ vice versa, drop all statistics by running <code class="ph codeph">DROP STATS</code> before
+ making the switch.
</p>
<p class="p">
When you run <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> on a table for the first time,
@@ -92,39 +138,44 @@ COMPUTE INCREMENTAL STATS [<var class="keyword varname">db_name</var>.]<var clas
<code class="ph codeph">COMPUTE STATS</code> statement. Such tables display <code class="ph codeph">false</code> under the
<code class="ph codeph">Incremental stats</code> column of the <code class="ph codeph">SHOW TABLE STATS</code> output.
</p>
-
<div class="note note note_note"><span class="note__title notetitle">Note:</span>
- Because many of the most performance-critical and resource-intensive operations rely on table and column
- statistics to construct accurate and efficient plans, <code class="ph codeph">COMPUTE STATS</code> is an important step at
- the end of your ETL process. Run <code class="ph codeph">COMPUTE STATS</code> on all tables as your first step during
- performance tuning for slow queries, or troubleshooting for out-of-memory conditions:
- <ul class="ul">
- <li class="li">
- Accurate statistics help Impala construct an efficient query plan for join queries, improving performance
- and reducing memory usage.
- </li>
-
- <li class="li">
- Accurate statistics help Impala distribute the work effectively for insert operations into Parquet
- tables, improving performance and reducing memory usage.
- </li>
-
- <li class="li">
- Accurate statistics help Impala estimate the memory required for each query, which is important when you
- use resource management features, such as admission control and the YARN resource management framework.
- The statistics help Impala to achieve high concurrency, full utilization of available memory, and avoid
- contention with workloads from other Hadoop components.
- </li>
- <li class="li">
- In <span class="keyword">Impala 2.8</span> and higher, when you run the
- <code class="ph codeph">COMPUTE STATS</code> or <code class="ph codeph">COMPUTE INCREMENTAL STATS</code>
- statement against a Parquet table, Impala automatically applies the query
- option setting <code class="ph codeph">MT_DOP=4</code> to increase the amount of intra-node
- parallelism during this CPU-intensive operation. See <a class="xref" href="impala_mt_dop.html">MT_DOP Query Option</a>
- for details about what this query option does and how to use it with
- CPU-intensive <code class="ph codeph">SELECT</code> statements.
- </li>
- </ul>
+ <div class="p">
+ Because many of the most performance-critical and resource-intensive
+ operations rely on table and column statistics to construct accurate and
+ efficient plans, <code class="ph codeph">COMPUTE STATS</code> is an important step at
+ the end of your ETL process. Run <code class="ph codeph">COMPUTE STATS</code> on all
+ tables as your first step during performance tuning for slow queries, or
+ troubleshooting for out-of-memory conditions:
+ <ul class="ul">
+ <li class="li">
+ Accurate statistics help Impala construct an efficient query plan
+ for join queries, improving performance and reducing memory usage.
+ </li>
+ <li class="li">
+ Accurate statistics help Impala distribute the work effectively
+ for insert operations into Parquet tables, improving performance and
+ reducing memory usage.
+ </li>
+ <li class="li">
+ Accurate statistics help Impala estimate the memory
+ required for each query, which is important when you use resource
+ management features, such as admission control and the YARN resource
+ management framework. The statistics help Impala to achieve high
+ concurrency, full utilization of available memory, and avoid
+ contention with workloads from other Hadoop components.
+ </li>
+ <li class="li">
+ In <span class="keyword">Impala 2.8</span> and
+ higher, when you run the <code class="ph codeph">COMPUTE STATS</code> or
+ <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> statement against a
+ Parquet table, Impala automatically applies the query option setting
+ <code class="ph codeph">MT_DOP=4</code> to increase the amount of intra-node
+ parallelism during this CPU-intensive operation. See <a class="xref" href="impala_mt_dop.html">MT_DOP Query Option</a> for details about what this query option does
+ and how to use it with CPU-intensive <code class="ph codeph">SELECT</code>
+ statements.
+ </li>
+ </ul>
+ </div>
</div>
<p class="p">
[07/15] impala git commit: [DOCS] Add Impala docs from branch 2.x
Posted by mi...@apache.org.
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_kudu.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_kudu.html b/docs/build/html/topics/impala_kudu.html
index f1e08fd..c6a2933 100644
--- a/docs/build/html/topics/impala_kudu.html
+++ b/docs/build/html/topics/impala_kudu.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="impala_kudu"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Using Impala to Query Kudu Tables</title></head><body id="impala_kudu"><main role="main"><article role="article" aria-labelledby="impala_kudu__kudu">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="impala_kudu"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Using Impala to Query Kudu Tables</title></head><body id="impala_kudu"><main role="main"><article role="article" aria-labelledby="impala_kudu__kudu">
<h1 class="title topictitle1" id="impala_kudu__kudu">Using Impala to Query Kudu Tables</h1>
@@ -485,8 +485,7 @@ CREATE TABLE default_vals
Each column in a Kudu table can optionally use an encoding, a low-overhead form of
compression that reduces the size on disk, then requires additional CPU cycles to
reconstruct the original values during queries. Typically, highly compressible data
- benefits from the reduced I/O to read the data back from disk. By default, each
- column uses the <span class="q">"plain"</span> encoding where the data is stored unchanged.
+ benefits from the reduced I/O to read the data back from disk.
</p>
<div class="p">
@@ -495,9 +494,9 @@ CREATE TABLE default_vals
<ul class="ul">
<li class="li">
<p class="p">
- <code class="ph codeph">AUTO_ENCODING</code>: use the default encoding based on the column
- type; currently always the same as <code class="ph codeph">PLAIN_ENCODING</code>, but subject to
- change in the future.
+ <code class="ph codeph">AUTO_ENCODING</code>: use the default encoding based
+ on the column type, which are bitshuffle for the numeric type
+ columns and dictionary for the string type columns.
</p>
</li>
<li class="li">
@@ -1318,16 +1317,38 @@ kudu.table_name | impala::some_database.table_name_demo
<p class="p">
Sentry authorization.
</p>
- <p class="p">
- Access to Kudu tables must be granted to and revoked from roles as usual.
- Only users with <code class="ph codeph">ALL</code> privileges on <code class="ph codeph">SERVER</code> can create external Kudu tables.
- Currently, access to a Kudu table is <span class="q">"all or nothing"</span>:
- enforced at the table level rather than the column level, and applying to all
- SQL operations rather than individual statements such as <code class="ph codeph">INSERT</code>.
+ <div class="p">
+ Access to Kudu tables must be granted to and revoked from roles with the
+ following considerations:
+ <ul class="ul">
+ <li class="li">
+ Only users with the <code class="ph codeph">ALL</code> privilege on
+ <code class="ph codeph">SERVER</code> can create external Kudu tables.
+ </li>
+ <li class="li">
+ The <code class="ph codeph">ALL</code> privileges on <code class="ph codeph">SERVER</code> is
+ required to specify the <code class="ph codeph">kudu.master_addresses</code>
+ property in the <code class="ph codeph">CREATE TABLE</code> statements for managed
+ tables as well as external tables.
+ </li>
+ <li class="li">
+ Access to Kudu tables is enforced at the table level and at the
+ column level.
+ </li>
+ <li class="li">
+ The <code class="ph codeph">SELECT</code>- and <code class="ph codeph">INSERT</code>-specific
+ permissions are supported.
+ </li>
+ <li class="li">
+ The <code class="ph codeph">DELETE</code>, <code class="ph codeph">UPDATE</code>, and
+ <code class="ph codeph">UPSERT</code> operations require the <code class="ph codeph">ALL</code>
+ privilege.
+ </li>
+ </ul>
Because non-SQL APIs can access Kudu data without going through Sentry
authorization, currently the Sentry support is considered preliminary
and subject to change.
- </p>
+ </div>
</li>
<li class="li">
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_langref.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_langref.html b/docs/build/html/topics/impala_langref.html
index 3d82b79..ae398d3 100644
--- a/docs/build/html/topics/impala_langref.html
+++ b/docs/build/html/topics/impala_langref.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_comments.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_literals.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_operators.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_schema_objects.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_functions.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_unsupported.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_porting.html"><met
a name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="langref"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala SQL Language Reference</title></head><body id="langref"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_comments.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_literals.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_operators.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_schema_objects.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_functions.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_unsupported.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_porting.html"><met
a name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="langref"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala SQL Language Reference</title></head><body id="langref"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Impala SQL Language Reference</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_langref_sql.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_langref_sql.html b/docs/build/html/topics/impala_langref_sql.html
index d0f40e0..31196be 100644
--- a/docs/build/html/topics/impala_langref_sql.html
+++ b/docs/build/html/topics/impala_langref_sql.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_ddl.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_dml.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_alter_table.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_alter_view.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_compute_stats.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_create_database.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_create_function.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_create_role.html"><meta name
="DC.Relation" scheme="URI" content="../topics/impala_create_table.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_create_view.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_delete.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_describe.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_drop_database.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_drop_function.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_drop_role.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_drop_stats.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_drop_table.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_drop_view.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_explain.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_grant.html"><meta name="DC.Relation" scheme="URI" cont
ent="../topics/impala_insert.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_invalidate_metadata.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_load_data.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_refresh.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_revoke.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_select.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_set.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_show.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_truncate_table.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_update.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_upsert.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_use.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version"
content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="langref_sql"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala SQL Statements</title></head><body id="langref_sql"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_ddl.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_dml.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_alter_table.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_alter_view.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_compute_stats.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_create_database.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_create_function.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_create_role.html"><meta name
="DC.Relation" scheme="URI" content="../topics/impala_create_table.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_create_view.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_delete.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_describe.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_drop_database.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_drop_function.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_drop_role.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_drop_stats.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_drop_table.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_drop_view.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_explain.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_grant.html"><meta name="DC.Relation" scheme="URI" cont
ent="../topics/impala_insert.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_invalidate_metadata.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_load_data.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_refresh.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_revoke.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_select.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_set.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_show.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_truncate_table.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_update.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_upsert.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_use.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_hints.html"><meta name="prodname"
content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="langref_sql"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala SQL Statements</title></head><body id="langref_sql"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Impala SQL Statements</h1>
@@ -25,4 +25,4 @@
The following sections show the major SQL statements that you work with in Impala:
</p>
</div>
-<nav role="navigation" class="related-links"><ul class="ullinks"><li class="link ulchildlink"><strong><a href="../topics/impala_ddl.html">DDL Statements</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_dml.html">DML Statements</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_alter_table.html">ALTER TABLE Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_alter_view.html">ALTER VIEW Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_compute_stats.html">COMPUTE STATS Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_create_database.html">CREATE DATABASE Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_create_function.html">CREATE FUNCTION Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_create_role.h
tml">CREATE ROLE Statement (Impala 2.0 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_create_table.html">CREATE TABLE Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_create_view.html">CREATE VIEW Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_delete.html">DELETE Statement (Impala 2.8 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_describe.html">DESCRIBE Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_drop_database.html">DROP DATABASE Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_drop_function.html">DROP FUNCTION Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_drop_role.html">DROP ROLE Statement (Impala 2.0 or higher only)</a></strong><br></li><li cla
ss="link ulchildlink"><strong><a href="../topics/impala_drop_stats.html">DROP STATS Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_drop_table.html">DROP TABLE Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_drop_view.html">DROP VIEW Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_explain.html">EXPLAIN Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_grant.html">GRANT Statement (Impala 2.0 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_insert.html">INSERT Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_invalidate_metadata.html">INVALIDATE METADATA Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_load_data.html">LOAD DATA Statement</a></strong><br></li><li class=
"link ulchildlink"><strong><a href="../topics/impala_refresh.html">REFRESH Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_revoke.html">REVOKE Statement (Impala 2.0 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_select.html">SELECT Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_set.html">SET Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_show.html">SHOW Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_truncate_table.html">TRUNCATE TABLE Statement (Impala 2.3 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_update.html">UPDATE Statement (Impala 2.8 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_upsert.html">UPSERT Statement (Impala 2.8 or higher on
ly)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_use.html">USE Statement</a></strong><br></li></ul><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_langref.html">Impala SQL Language Reference</a></div></div></nav></article></main></body></html>
\ No newline at end of file
+<nav role="navigation" class="related-links"><ul class="ullinks"><li class="link ulchildlink"><strong><a href="../topics/impala_ddl.html">DDL Statements</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_dml.html">DML Statements</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_alter_table.html">ALTER TABLE Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_alter_view.html">ALTER VIEW Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_compute_stats.html">COMPUTE STATS Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_create_database.html">CREATE DATABASE Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_create_function.html">CREATE FUNCTION Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_create_role.h
tml">CREATE ROLE Statement (Impala 2.0 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_create_table.html">CREATE TABLE Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_create_view.html">CREATE VIEW Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_delete.html">DELETE Statement (Impala 2.8 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_describe.html">DESCRIBE Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_drop_database.html">DROP DATABASE Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_drop_function.html">DROP FUNCTION Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_drop_role.html">DROP ROLE Statement (Impala 2.0 or higher only)</a></strong><br></li><li cla
ss="link ulchildlink"><strong><a href="../topics/impala_drop_stats.html">DROP STATS Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_drop_table.html">DROP TABLE Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_drop_view.html">DROP VIEW Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_explain.html">EXPLAIN Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_grant.html">GRANT Statement (Impala 2.0 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_insert.html">INSERT Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_invalidate_metadata.html">INVALIDATE METADATA Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_load_data.html">LOAD DATA Statement</a></strong><br></li><li class=
"link ulchildlink"><strong><a href="../topics/impala_refresh.html">REFRESH Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_revoke.html">REVOKE Statement (Impala 2.0 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_select.html">SELECT Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_set.html">SET Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_show.html">SHOW Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_truncate_table.html">TRUNCATE TABLE Statement (Impala 2.3 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_update.html">UPDATE Statement (Impala 2.8 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_upsert.html">UPSERT Statement (Impala 2.8 or higher on
ly)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_use.html">USE Statement</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_hints.html">Optimizer Hints</a></strong><br></li></ul><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_langref.html">Impala SQL Language Reference</a></div></div></nav></article></main></body></html>
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_langref_unsupported.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_langref_unsupported.html b/docs/build/html/topics/impala_langref_unsupported.html
index c99b7bc..3480329 100644
--- a/docs/build/html/topics/impala_langref_unsupported.html
+++ b/docs/build/html/topics/impala_langref_unsupported.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="langref_hiveql_delta"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>SQL Differences Between Impala and Hive</title></head><body id="langref_hiveql_delta"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="langref_hiveql_delta"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>SQL Differences Between Impala and Hive</title></head><body id="langref_hiveql_delta"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">SQL Differences Between Impala and Hive</h1>
@@ -177,6 +177,14 @@
with an Impala table.
</li>
</ul>
+ <p class="p">
+ Impala respects the <code class="ph codeph">serialization.null.format</code> table
+ property only for TEXT tables and ignores the property for Parquet and
+ other formats. Hive respects the <code class="ph codeph">serialization.null.format</code>
+ property for Parquet and other formats and converts matching values
+ to NULL during the scan. See <a class="xref" href="impala_txtfile.html">Using Text Data Files with Impala Tables</a> for
+ using the table property in Impala.
+ </p>
</div>
</article>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_ldap.html
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diff --git a/docs/build/html/topics/impala_ldap.html b/docs/build/html/topics/impala_ldap.html
index 50c2147..ba8c064 100644
--- a/docs/build/html/topics/impala_ldap.html
+++ b/docs/build/html/topics/impala_ldap.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_authentication.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="ldap"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Enabling LDAP Authentication for Impala</title></head><body id="ldap"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_authentication.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="ldap"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Enabling LDAP Authentication for Impala</title></head><body id="ldap"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Enabling LDAP Authentication for Impala</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_limit.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_limit.html b/docs/build/html/topics/impala_limit.html
index 6517bab..ae9c68f 100644
--- a/docs/build/html/topics/impala_limit.html
+++ b/docs/build/html/topics/impala_limit.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_select.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="limit"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>LIMIT Clause</title></head><body id="limit"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_select.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="limit"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>LIMIT Clause</title></head><body id="limit"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">LIMIT Clause</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_lineage.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_lineage.html b/docs/build/html/topics/impala_lineage.html
index 8ef641c..9551672 100644
--- a/docs/build/html/topics/impala_lineage.html
+++ b/docs/build/html/topics/impala_lineage.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_security.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="lineage"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Viewing Lineage Information for Impala Data</title></head><body id="lineage"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_security.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="lineage"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Viewing Lineage Information for Impala Data</title></head><body id="lineage"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Viewing Lineage Information for Impala Data</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_literals.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_literals.html b/docs/build/html/topics/impala_literals.html
index d4d47c8..7cdca57 100644
--- a/docs/build/html/topics/impala_literals.html
+++ b/docs/build/html/topics/impala_literals.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="literals"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Literals</title></head><body id="literals"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="literals"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Literals</title></head><body id="literals"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Literals</h1>
@@ -281,16 +281,13 @@ select case bool_col when true then 'yes' when false 'no' else 'null' end from t
<div class="body conbody">
<p class="p">
- Impala automatically converts <code class="ph codeph">STRING</code> literals of the correct format into
- <code class="ph codeph">TIMESTAMP</code> values. Timestamp values are accepted in the format
- <code class="ph codeph">"yyyy-MM-dd HH:mm:ss.SSSSSS"</code>, and can consist of just the date, or just the time, with or
- without the fractional second portion. For example, you can specify <code class="ph codeph">TIMESTAMP</code> values such as
- <code class="ph codeph">'1966-07-30'</code>, <code class="ph codeph">'08:30:00'</code>, or <code class="ph codeph">'1985-09-25 17:45:30.005'</code>.
- <span class="ph">Casting an integer or floating-point value <code class="ph codeph">N</code> to
- <code class="ph codeph">TIMESTAMP</code> produces a value that is <code class="ph codeph">N</code> seconds past the start of the epoch
- date (January 1, 1970). By default, the result value represents a date and time in the UTC time zone.
- If the setting <code class="ph codeph">-use_local_tz_for_unix_timestamp_conversions=true</code> is in effect,
- the resulting <code class="ph codeph">TIMESTAMP</code> represents a date and time in the local time zone.</span>
+ Impala automatically converts <code class="ph codeph">STRING</code> literals of the
+ correct format into <code class="ph codeph">TIMESTAMP</code> values. Timestamp values
+ are accepted in the format <code class="ph codeph">"yyyy-MM-dd HH:mm:ss.SSSSSS"</code>,
+ and can consist of just the date, or just the time, with or without the
+ fractional second portion. For example, you can specify <code class="ph codeph">TIMESTAMP</code>
+ values such as <code class="ph codeph">'1966-07-30'</code>, <code class="ph codeph">'08:30:00'</code>,
+ or <code class="ph codeph">'1985-09-25 17:45:30.005'</code>.
</p>
<p class="p">
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_live_progress.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_live_progress.html b/docs/build/html/topics/impala_live_progress.html
index 2717aa5..91cd717 100644
--- a/docs/build/html/topics/impala_live_progress.html
+++ b/docs/build/html/topics/impala_live_progress.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="live_progress"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>LIVE_PROGRESS Query Option (Impala 2.3 or higher only)</title></head><body id="live_progress"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="live_progress"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>LIVE_PROGRESS Query Option (Impala 2.3 or higher only)</title></head><body id="live_progress"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">LIVE_PROGRESS Query Option (<span class="keyword">Impala 2.3</span> or higher only)</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_live_summary.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_live_summary.html b/docs/build/html/topics/impala_live_summary.html
index d543a7e..209f30a 100644
--- a/docs/build/html/topics/impala_live_summary.html
+++ b/docs/build/html/topics/impala_live_summary.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="live_summary"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>LIVE_SUMMARY Query Option (Impala 2.3 or higher only)</title></head><body id="live_summary"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="live_summary"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>LIVE_SUMMARY Query Option (Impala 2.3 or higher only)</title></head><body id="live_summary"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">LIVE_SUMMARY Query Option (<span class="keyword">Impala 2.3</span> or higher only)</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_load_data.html
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diff --git a/docs/build/html/topics/impala_load_data.html b/docs/build/html/topics/impala_load_data.html
index ec8cbf8..6852faa 100644
--- a/docs/build/html/topics/impala_load_data.html
+++ b/docs/build/html/topics/impala_load_data.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="load_data"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>LOAD DATA Statement</title></head><body id="load_data"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="load_data"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>LOAD DATA Statement</title></head><body id="load_data"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">LOAD DATA Statement</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_logging.html
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diff --git a/docs/build/html/topics/impala_logging.html b/docs/build/html/topics/impala_logging.html
index da6b9f1..96a47c7 100644
--- a/docs/build/html/topics/impala_logging.html
+++ b/docs/build/html/topics/impala_logging.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impa
la 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="logging"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Using Impala Logging</title></head><body id="logging"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impa
la 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="logging"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Using Impala Logging</title></head><body id="logging"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Using Impala Logging</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_map.html
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diff --git a/docs/build/html/topics/impala_map.html b/docs/build/html/topics/impala_map.html
index a9606f2..0d094f4 100644
--- a/docs/build/html/topics/impala_map.html
+++ b/docs/build/html/topics/impala_map.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="map"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>MAP Complex Type (Impala 2.3 or higher only)</title></head><body id="map"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="map"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>MAP Complex Type (Impala 2.3 or higher only)</title></head><body id="map"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">MAP Complex Type (<span class="keyword">Impala 2.3</span> or higher only)</h1>
@@ -102,7 +102,7 @@ type ::= <var class="keyword varname">primitive_type</var> | <var class="keyword
</p>
</li>
<li class="li">
- <p class="p" id="map__d6e3207">
+ <p class="p" id="map__d6e3246">
The maximum length of the column definition for any complex type, including declarations for any nested types,
is 4000 characters.
</p>
@@ -119,7 +119,7 @@ type ::= <var class="keyword varname">primitive_type</var> | <var class="keyword
<strong class="ph b">Kudu considerations:</strong>
</p>
<p class="p">
- Currently, the data types <code class="ph codeph">DECIMAL</code>, <code class="ph codeph">CHAR</code>, <code class="ph codeph">VARCHAR</code>,
+ Currently, the data types <code class="ph codeph">CHAR</code>, <code class="ph codeph">VARCHAR</code>,
<code class="ph codeph">ARRAY</code>, <code class="ph codeph">MAP</code>, and <code class="ph codeph">STRUCT</code> cannot be used with Kudu tables.
</p>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_math_functions.html
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diff --git a/docs/build/html/topics/impala_math_functions.html b/docs/build/html/topics/impala_math_functions.html
index eadfa49..7ab5d98 100644
--- a/docs/build/html/topics/impala_math_functions.html
+++ b/docs/build/html/topics/impala_math_functions.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="math_functions"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Mathematical Functions</title></head><body id="math_functions"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="math_functions"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Mathematical Functions</title></head><body id="math_functions"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Impala Mathematical Functions</h1>
@@ -887,6 +887,81 @@ select mod(9.9,3.0);
+ <dt class="dt dlterm" id="math_functions__murmur_hash">
+ <code class="ph codeph">murmur_hash(type v)</code>
+ </dt>
+
+ <dd class="dd">
+
+ <strong class="ph b">Purpose:</strong> Returns a consistent 64-bit value derived from the input argument, for convenience of
+ implementing <a class="xref" href="https://en.wikipedia.org/wiki/MurmurHash" target="_blank"> MurmurHash2</a> non-cryptographic hash function.
+ <p class="p">
+ <strong class="ph b">Return type:</strong> <code class="ph codeph">BIGINT</code>
+ </p>
+ <p class="p">
+ <strong class="ph b">Usage notes:</strong>
+ </p>
+ <p class="p">
+ You might use the return value in an application where you perform load balancing, bucketing, or some
+ other technique to divide processing or storage. This function provides a good performance for all kinds
+ of keys such as number, ascii string and UTF-8. It can be recommended as general-purpose hashing function.
+ </p>
+ <p class="p">
+ Regarding comparison of murmur_hash with fnv_hash, murmur_hash is based on Murmur2 hash algorithm and fnv_hash
+ function is based on FNV-1a hash algorithm. Murmur2 and FNV-1a can show very good randomness and performance
+ compared with well known other hash algorithms, but Murmur2 slightly show better randomness and performance than FNV-1a.
+ See <a class="xref" href="https://www.strchr.com/hash_functions" target="_blank">[1]</a><a class="xref" href="https://aras-p.info/blog/2016/08/09/More-Hash-Function-Tests" target="_blank">[2]</a><a class="xref" href="https://www.strchr.com/hash_functions" target="_blank">[3]</a> for details.
+ </p>
+ <p class="p">
+ Similar input values of different types could produce different hash values, for example the same
+ numeric value represented as <code class="ph codeph">SMALLINT</code> or <code class="ph codeph">BIGINT</code>,
+ <code class="ph codeph">FLOAT</code> or <code class="ph codeph">DOUBLE</code>, or <code class="ph codeph">DECIMAL(5,2)</code> or
+ <code class="ph codeph">DECIMAL(20,5)</code>.
+ </p>
+ <p class="p">
+ <strong class="ph b">Examples:</strong>
+ </p>
+<pre class="pre codeblock"><code>[localhost:21000] > create table h (x int, s string);
+[localhost:21000] > insert into h values (0, 'hello'), (1,'world'), (1234567890,'antidisestablishmentarianism');
+[localhost:21000] > select x, murmur_hash(x) from h;
++------------+----------------------+
+| x | murmur_hash(x) |
++------------+----------------------+
+| 0 | 6960269033020761575 |
+| 1 | -780611581681153783 |
+| 1234567890 | -5754914572385924334 |
++------------+----------------------+
+[localhost:21000] > select s, murmur_hash(s) from h;
++------------------------------+----------------------+
+| s | murmur_hash(s) |
++------------------------------+----------------------+
+| hello | 2191231550387646743 |
+| world | 5568329560871645431 |
+| antidisestablishmentarianism | -2261804666958489663 |
++------------------------------+----------------------+ </code></pre>
+ <p class="p">
+ For short argument values, the high-order bits of the result have relatively higher entropy than fnv_hash:
+ </p>
+<pre class="pre codeblock"><code>[localhost:21000] > create table b (x boolean);
+[localhost:21000] > insert into b values (true), (true), (false), (false);
+[localhost:21000] > select x, murmur_hash(x) from b;
++-------+----------------------+
+| x | murmur_hash(x) |
++-------+---------------------++
+| true | -5720937396023583481 |
+| true | -5720937396023583481 |
+| false | 6351753276682545529 |
+| false | 6351753276682545529 |
++-------+--------------------+-+</code></pre>
+ <p class="p">
+ <strong class="ph b">Added in:</strong> Impala 2.12.0
+ </p>
+ </dd>
+
+
+
+
+
<dt class="dt dlterm" id="math_functions__negative">
<code class="ph codeph">negative(numeric_type a)</code>
@@ -1638,4 +1713,4 @@ select trunc(d) from dbl order by d;
</dl>
</div>
-<nav role="navigation" class="related-links"><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_functions.html">Impala Built-In Functions</a></div></div></nav></article></main></body></html>
\ No newline at end of file
+<nav role="navigation" class="related-links"><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_functions.html">Impala Built-In Functions</a></div></div></nav></article></main></body></html>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_max.html
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diff --git a/docs/build/html/topics/impala_max.html b/docs/build/html/topics/impala_max.html
index ba663f1..db7f877 100644
--- a/docs/build/html/topics/impala_max.html
+++ b/docs/build/html/topics/impala_max.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_aggregate_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="max"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>MAX Function</title></head><body id="max"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_aggregate_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="max"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>MAX Function</title></head><body id="max"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">MAX Function</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_max_errors.html
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diff --git a/docs/build/html/topics/impala_max_errors.html b/docs/build/html/topics/impala_max_errors.html
index 566a8f5..632ee9e 100644
--- a/docs/build/html/topics/impala_max_errors.html
+++ b/docs/build/html/topics/impala_max_errors.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="max_errors"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>MAX_ERRORS Query Option</title></head><body id="max_errors"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="max_errors"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>MAX_ERRORS Query Option</title></head><body id="max_errors"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">MAX_ERRORS Query Option</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_max_io_buffers.html
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diff --git a/docs/build/html/topics/impala_max_io_buffers.html b/docs/build/html/topics/impala_max_io_buffers.html
index c387002..2d58393 100644
--- a/docs/build/html/topics/impala_max_io_buffers.html
+++ b/docs/build/html/topics/impala_max_io_buffers.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="max_io_buffers"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>MAX_IO_BUFFERS Query Option</title></head><body id="max_io_buffers"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="max_io_buffers"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>MAX_IO_BUFFERS Query Option</title></head><body id="max_io_buffers"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">MAX_IO_BUFFERS Query Option</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_max_num_runtime_filters.html
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diff --git a/docs/build/html/topics/impala_max_num_runtime_filters.html b/docs/build/html/topics/impala_max_num_runtime_filters.html
index ae10bb4..c5e0452 100644
--- a/docs/build/html/topics/impala_max_num_runtime_filters.html
+++ b/docs/build/html/topics/impala_max_num_runtime_filters.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="max_num_runtime_filters"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>MAX_NUM_RUNTIME_FILTERS Query Option (Impala 2.5 or higher only)</title></head><body id="max_num_runtime_filters"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="max_num_runtime_filters"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>MAX_NUM_RUNTIME_FILTERS Query Option (Impala 2.5 or higher only)</title></head><body id="max_num_runtime_filters"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">MAX_NUM_RUNTIME_FILTERS Query Option (<span class="keyword">Impala 2.5</span> or higher only)</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_max_row_size.html
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diff --git a/docs/build/html/topics/impala_max_row_size.html b/docs/build/html/topics/impala_max_row_size.html
index 0693431..ebd02e2 100644
--- a/docs/build/html/topics/impala_max_row_size.html
+++ b/docs/build/html/topics/impala_max_row_size.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="max_row_size"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>MAX_ROW_SIZE Query Option</title></head><body id="max_row_size"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="max_row_size"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>MAX_ROW_SIZE Query Option</title></head><body id="max_row_size"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">MAX_ROW_SIZE Query Option</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_max_scan_range_length.html
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diff --git a/docs/build/html/topics/impala_max_scan_range_length.html b/docs/build/html/topics/impala_max_scan_range_length.html
index 402d66f..f476f8c 100644
--- a/docs/build/html/topics/impala_max_scan_range_length.html
+++ b/docs/build/html/topics/impala_max_scan_range_length.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="max_scan_range_length"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>MAX_SCAN_RANGE_LENGTH Query Option</title></head><body id="max_scan_range_length"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="max_scan_range_length"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>MAX_SCAN_RANGE_LENGTH Query Option</title></head><body id="max_scan_range_length"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">MAX_SCAN_RANGE_LENGTH Query Option</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_mem_limit.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_mem_limit.html b/docs/build/html/topics/impala_mem_limit.html
index 1ae0bc6..9143941 100644
--- a/docs/build/html/topics/impala_mem_limit.html
+++ b/docs/build/html/topics/impala_mem_limit.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="mem_limit"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>MEM_LIMIT Query Option</title></head><body id="mem_limit"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="mem_limit"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>MEM_LIMIT Query Option</title></head><body id="mem_limit"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">MEM_LIMIT Query Option</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_min.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_min.html b/docs/build/html/topics/impala_min.html
index 42ef3ef..1599bbe 100644
--- a/docs/build/html/topics/impala_min.html
+++ b/docs/build/html/topics/impala_min.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_aggregate_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="min"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>MIN Function</title></head><body id="min"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_aggregate_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="min"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>MIN Function</title></head><body id="min"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">MIN Function</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_min_spillable_buffer_size.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_min_spillable_buffer_size.html b/docs/build/html/topics/impala_min_spillable_buffer_size.html
index f0baccc..2d3bc6a 100644
--- a/docs/build/html/topics/impala_min_spillable_buffer_size.html
+++ b/docs/build/html/topics/impala_min_spillable_buffer_size.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="min_spillable_buffer_size"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>MIN_SPILLABLE_BUFFER_SIZE Query Option</title></head><body id="min_spillable_buffer_size"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="min_spillable_buffer_size"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>MIN_SPILLABLE_BUFFER_SIZE Query Option</title></head><body id="min_spillable_buffer_size"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">MIN_SPILLABLE_BUFFER_SIZE Query Option</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_misc_functions.html
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diff --git a/docs/build/html/topics/impala_misc_functions.html b/docs/build/html/topics/impala_misc_functions.html
index 35321a2..e150467 100644
--- a/docs/build/html/topics/impala_misc_functions.html
+++ b/docs/build/html/topics/impala_misc_functions.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="misc_functions"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Miscellaneous Functions</title></head><body id="misc_functions"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="misc_functions"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Miscellaneous Functions</title></head><body id="misc_functions"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Impala Miscellaneous Functions</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_mixed_security.html
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diff --git a/docs/build/html/topics/impala_mixed_security.html b/docs/build/html/topics/impala_mixed_security.html
index 232d855..53c309e 100644
--- a/docs/build/html/topics/impala_mixed_security.html
+++ b/docs/build/html/topics/impala_mixed_security.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_authentication.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="mixed_security"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Using Multiple Authentication Methods with Impala</title></head><body id="mixed_security"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_authentication.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="mixed_security"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Using Multiple Authentication Methods with Impala</title></head><body id="mixed_security"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Using Multiple Authentication Methods with Impala</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_mt_dop.html
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diff --git a/docs/build/html/topics/impala_mt_dop.html b/docs/build/html/topics/impala_mt_dop.html
index 25681c8..42e4166 100644
--- a/docs/build/html/topics/impala_mt_dop.html
+++ b/docs/build/html/topics/impala_mt_dop.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="mt_dop"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>MT_DOP Query Option</title></head><body id="mt_dop"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="mt_dop"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>MT_DOP Query Option</title></head><body id="mt_dop"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">MT_DOP Query Option</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_ndv.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_ndv.html b/docs/build/html/topics/impala_ndv.html
index 0166472..9cdb2e0 100644
--- a/docs/build/html/topics/impala_ndv.html
+++ b/docs/build/html/topics/impala_ndv.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_aggregate_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="ndv"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>NDV Function</title></head><body id="ndv"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_aggregate_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="ndv"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>NDV Function</title></head><body id="ndv"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">NDV Function</h1>
[08/15] impala git commit: [DOCS] Add Impala docs from branch 2.x
Posted by mi...@apache.org.
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_known_issues.html
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diff --git a/docs/build/html/topics/impala_known_issues.html b/docs/build/html/topics/impala_known_issues.html
index 7f2a7e4..7e52fd1 100644
--- a/docs/build/html/topics/impala_known_issues.html
+++ b/docs/build/html/topics/impala_known_issues.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_release_notes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="known_issues"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Known Issues and Workarounds in Impala</title></head><body id="known_issues"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_release_notes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="known_issues"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Known Issues and Workarounds in Impala</title></head><body id="known_issues"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1"><span class="ph">Known Issues and Workarounds in Impala</span></h1>
@@ -9,30 +9,32 @@
<div class="body conbody">
<p class="p">
- The following sections describe known issues and workarounds in Impala, as of the current production release. This page summarizes the
- most serious or frequently encountered issues in the current release, to help you make planning decisions about installing and
- upgrading. Any workarounds are listed here. The bug links take you to the Impala issues site, where you can see the diagnosis and
- whether a fix is in the pipeline.
+ The following sections describe known issues and workarounds in Impala, as of the current
+ production release. This page summarizes the most serious or frequently encountered issues
+ in the current release, to help you make planning decisions about installing and
+ upgrading. Any workarounds are listed here. The bug links take you to the Impala issues
+ site, where you can see the diagnosis and whether a fix is in the pipeline.
</p>
<div class="note note note_note"><span class="note__title notetitle">Note:</span>
- The online issue tracking system for Impala contains comprehensive information and is updated in real time. To verify whether an issue
- you are experiencing has already been reported, or which release an issue is fixed in, search on the
- <a class="xref" href="https://issues.apache.org/jira/" target="_blank">issues.apache.org JIRA tracker</a>.
+ The online issue tracking system for Impala contains comprehensive information and is
+ updated in real time. To verify whether an issue you are experiencing has already been
+ reported, or which release an issue is fixed in, search on the
+ <a class="xref" href="https://issues.apache.org/jira/" target="_blank">issues.apache.org
+ JIRA tracker</a>.
</div>
<p class="p toc inpage"></p>
<p class="p">
- For issues fixed in various Impala releases, see <a class="xref" href="impala_fixed_issues.html#fixed_issues">Fixed Issues in Apache Impala</a>.
+ For issues fixed in various Impala releases, see
+ <a class="xref" href="impala_fixed_issues.html#fixed_issues">Fixed Issues in Apache Impala</a>.
</p>
</div>
-
-
<nav role="navigation" class="related-links"><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_release_notes.html">Impala Release Notes</a></div></div></nav><article class="topic concept nested1" aria-labelledby="ariaid-title2" id="known_issues__known_issues_startup">
<h2 class="title topictitle2" id="ariaid-title2">Impala Known Issues: Startup</h2>
@@ -40,42 +42,60 @@
<div class="body conbody">
<p class="p">
- These issues can prevent one or more Impala-related daemons
- from starting properly.
+ These issues can prevent one or more Impala-related daemons from starting properly.
</p>
</div>
<article class="topic concept nested2" aria-labelledby="IMPALA-4978__IMPALA-5253" id="known_issues_startup__IMPALA-4978">
+
<h3 class="title topictitle3" id="IMPALA-4978__IMPALA-5253">Problem retrieving FQDN causes startup problem on kerberized clusters</h3>
+
<div class="body conbody">
+
<p class="p">
The method Impala uses to retrieve the host name while constructing the Kerberos
- principal is the <code class="ph codeph">gethostname()</code> system call. This function might
- not always return the fully qualified domain name, depending on the network
- configuration. If the daemons cannot determine the FQDN, Impala does not start
- on a kerberized cluster.
+ principal is the <code class="ph codeph">gethostname()</code> system call. This function might not
+ always return the fully qualified domain name, depending on the network configuration.
+ If the daemons cannot determine the FQDN, Impala does not start on a kerberized
+ cluster.
</p>
+
<p class="p">
This problem might occur immediately after an upgrade of a CDH cluster, due to changes
- in Cloudera Manager that supplies the <code class="ph codeph">--hostname</code> flag automatically to
- the Impala-related daemons. (See the issue <span class="q">"hostname parameter is not passed to Impala catalog role"</span>
- at <a class="xref" href="https://www.cloudera.com/documentation/enterprise/release-notes/topics/cm_rn_known_issues.html" target="_blank">the Cloudera Manager Known Issues page</a>.)
+ in Cloudera Manager that supplies the <code class="ph codeph">--hostname</code> flag automatically
+ to the Impala-related daemons. (See the issue <span class="q">"hostname parameter is not passed to
+ Impala catalog role"</span> at
+ <a class="xref" href="https://www.cloudera.com/documentation/enterprise/release-notes/topics/cm_rn_known_issues.html" target="_blank">the
+ Cloudera Manager Known Issues page</a>.)
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Bugs:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-4978" target="_blank">IMPALA-4978</a>,
+ <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-5253" target="_blank">IMPALA-5253</a>
</p>
- <p class="p"><strong class="ph b">Bugs:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-4978" target="_blank">IMPALA-4978</a>, <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-5253" target="_blank">IMPALA-5253</a></p>
- <p class="p"><strong class="ph b">Severity:</strong> High</p>
- <p class="p"><strong class="ph b">Resolution:</strong> The issue is expected to occur less frequently on systems
- with fixes for <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-4978" target="_blank">IMPALA-4978</a>, <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-5253" target="_blank">IMPALA-5253</a>,
- or both. Even on systems with fixes for both of these issues, the workaround might still
- be required in some cases.
+
+ <p class="p">
+ <strong class="ph b">Severity:</strong> High
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Resolution:</strong> The issue is expected to occur less frequently on systems with
+ fixes for <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-4978" target="_blank">IMPALA-4978</a>,
+ <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-5253" target="_blank">IMPALA-5253</a>, or both. Even on systems with fixes for
+ both of these issues, the workaround might still be required in some cases.
</p>
- <p class="p"><strong class="ph b">Workaround:</strong> Test if a host is affected by checking whether the output of the
- <span class="keyword cmdname">hostname</span> command includes the FQDN. On hosts where <span class="keyword cmdname">hostname</span>
- only returns the short name, pass the command-line flag
- <code class="ph codeph">--hostname=<var class="keyword varname">fully_qualified_domain_name</var></code>
- in the startup options of all Impala-related daemons.
+
+ <p class="p">
+ <strong class="ph b">Workaround:</strong> Test if a host is affected by checking whether the output of the
+ <span class="keyword cmdname">hostname</span> command includes the FQDN. On hosts where
+ <span class="keyword cmdname">hostname</span> only returns the short name, pass the command-line flag
+ <code class="ph codeph">--hostname=<var class="keyword varname">fully_qualified_domain_name</var></code> in the
+ startup options of all Impala-related daemons.
</p>
+
</div>
+
</article>
</article>
@@ -92,36 +112,111 @@
</div>
- <article class="topic concept nested2" aria-labelledby="ariaid-title5" id="known_issues_crash__IMPALA-4828">
- <h3 class="title topictitle3" id="ariaid-title5">Altering Kudu table schema outside of Impala may result in crash on read</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title5" id="known_issues_crash__impala-6841">
+
+ <h3 class="title topictitle3" id="ariaid-title5">Unable to view large catalog objects in catalogd Web UI</h3>
+
+ <div class="body conbody">
+
+ <p class="p">
+ In <code class="ph codeph">catalogd</code> Web UI, you can list metadata objects and view their
+ details. These details are accessed via a link and printed to a string formatted using
+ thrift's <code class="ph codeph">DebugProtocol</code>. Printing large objects (> 1 GB) in Web UI can
+ crash <code class="ph codeph">catalogd</code>.
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-6841" target="_blank">IMPALA-6841</a>
+ </p>
+
+ </div>
+
+ </article>
+
+ <article class="topic concept nested2" aria-labelledby="ariaid-title6" id="known_issues_crash__impala-6389">
+
+ <h3 class="title topictitle3" id="ariaid-title6"><strong class="ph b">Crash when querying tables with "\0" as a row delimiter</strong></h3>
+
<div class="body conbody">
+
+ <p class="p">
+ When querying a textfile-based Impala table that uses <code class="ph codeph">\0</code> as a new
+ line separator, Impala crashes.
+ </p>
+
+ <p class="p">
+ The following sequence causes <code class="ph codeph">impalad</code> to crash:
+ </p>
+
+<pre class="pre">create table tab_separated(id bigint, s string, n int, t timestamp, b boolean)
+ row format delimited
+ fields terminated by '\t' escaped by '\\' lines terminated by '\000'
+ stored as textfile;
+select * from tab_separated; -- Done. 0 results.
+insert into tab_separated (id, s) values (100, ''); -- Success.
+select * from tab_separated; -- 20 second delay before getting "Cancelled due to unreachable impalad(s): xxxx:22000"</pre>
+
<p class="p">
- Creating a table in Impala, changing the column schema outside of Impala,
- and then reading again in Impala may result in a crash. Neither Impala nor
- the Kudu client validates the schema immediately before reading, so Impala may attempt to
- dereference pointers that aren't there. This happens if a string column is dropped
- and then a new, non-string column is added with the old string column's name.
+ <strong class="ph b">Bug:</strong>
+ <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-6389" target="_blank">IMPALA-6389</a>
</p>
- <p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-4828" target="_blank">IMPALA-4828</a></p>
- <p class="p"><strong class="ph b">Severity:</strong> High</p>
- <p class="p"><strong class="ph b">Workaround:</strong> Run the statement <code class="ph codeph">REFRESH <var class="keyword varname">table_name</var></code>
- after any occasion when the table structure, such as the number, names, and data types
- of columns, are modified outside of Impala using the Kudu API.
+
+ <p class="p">
+ <strong class="ph b">Workaround:</strong> Use an alternative delimiter, e.g. <code class="ph codeph">\001</code>.
</p>
+
</div>
+
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title6" id="known_issues_crash__IMPALA-1972">
+ <article class="topic concept nested2" aria-labelledby="ariaid-title7" id="known_issues_crash__IMPALA-4828">
- <h3 class="title topictitle3" id="ariaid-title6">Queries that take a long time to plan can cause webserver to block other queries</h3>
+ <h3 class="title topictitle3" id="ariaid-title7">Altering Kudu table schema outside of Impala may result in crash on read</h3>
<div class="body conbody">
<p class="p">
- Trying to get the details of a query through the debug web page
- while the query is planning will block new queries that had not
- started when the web page was requested. The web UI becomes
- unresponsive until the planning phase is finished.
+ Creating a table in Impala, changing the column schema outside of Impala, and then
+ reading again in Impala may result in a crash. Neither Impala nor the Kudu client
+ validates the schema immediately before reading, so Impala may attempt to dereference
+ pointers that aren't there. This happens if a string column is dropped and then a new,
+ non-string column is added with the old string column's name.
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Bug:</strong>
+ <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-4828" target="_blank">IMPALA-4828</a>
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Severity:</strong> High
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.9.0</span>.
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Workaround:</strong> Run the statement <code class="ph codeph">REFRESH
+ <var class="keyword varname">table_name</var></code> after any occasion when the table structure,
+ such as the number, names, and data types of columns, are modified outside of Impala
+ using the Kudu API.
+ </p>
+
+ </div>
+
+ </article>
+
+ <article class="topic concept nested2" aria-labelledby="ariaid-title8" id="known_issues_crash__IMPALA-1972">
+
+ <h3 class="title topictitle3" id="ariaid-title8">Queries that take a long time to plan can cause webserver to block other queries</h3>
+
+ <div class="body conbody">
+
+ <p class="p">
+ Trying to get the details of a query through the debug web page while the query is
+ planning will block new queries that had not started when the web page was requested.
+ The web UI becomes unresponsive until the planning phase is finished.
</p>
<p class="p">
@@ -132,33 +227,56 @@
<strong class="ph b">Severity:</strong> High
</p>
+ <p class="p">
+ <strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.9.0</span>.
+ </p>
+
</div>
+
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title7" id="known_issues_crash__IMPALA-4595">
- <h3 class="title topictitle3" id="ariaid-title7">Linking IR UDF module to main module crashes Impala</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title9" id="known_issues_crash__IMPALA-4595">
+
+ <h3 class="title topictitle3" id="ariaid-title9">Linking IR UDF module to main module crashes Impala</h3>
+
<div class="body conbody">
+
<p class="p">
- A UDF compiled as an LLVM module (<code class="ph codeph">.ll</code>) could cause a crash
- when executed.
+ A UDF compiled as an LLVM module (<code class="ph codeph">.ll</code>) could cause a crash when
+ executed.
</p>
- <p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-4595" target="_blank">IMPALA-4595</a></p>
- <p class="p"><strong class="ph b">Severity:</strong> High</p>
- <p class="p"><strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.8</span> and higher.</p>
- <p class="p"><strong class="ph b">Workaround:</strong> Compile the external UDFs to a <code class="ph codeph">.so</code> library instead of a
- <code class="ph codeph">.ll</code> IR module.</p>
+
+ <p class="p">
+ <strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-4595" target="_blank">IMPALA-4595</a>
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Severity:</strong> High
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.8</span> and higher.
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Workaround:</strong> Compile the external UDFs to a <code class="ph codeph">.so</code> library instead
+ of a <code class="ph codeph">.ll</code> IR module.
+ </p>
+
</div>
+
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title8" id="known_issues_crash__IMPALA-3069">
+ <article class="topic concept nested2" aria-labelledby="ariaid-title10" id="known_issues_crash__IMPALA-3069">
- <h3 class="title topictitle3" id="ariaid-title8">Setting BATCH_SIZE query option too large can cause a crash</h3>
+ <h3 class="title topictitle3" id="ariaid-title10">Setting BATCH_SIZE query option too large can cause a crash</h3>
<div class="body conbody">
<p class="p">
- Using a value in the millions for the <code class="ph codeph">BATCH_SIZE</code> query option, together with wide rows or large string values in
- columns, could cause a memory allocation of more than 2 GB resulting in a crash.
+ Using a value in the millions for the <code class="ph codeph">BATCH_SIZE</code> query option,
+ together with wide rows or large string values in columns, could cause a memory
+ allocation of more than 2 GB resulting in a crash.
</p>
<p class="p">
@@ -169,20 +287,23 @@
<strong class="ph b">Severity:</strong> High
</p>
- <p class="p"><strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.7.0</span>.</p>
+ <p class="p">
+ <strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.7.0</span>.
+ </p>
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title9" id="known_issues_crash__IMPALA-3441">
+ <article class="topic concept nested2" aria-labelledby="ariaid-title11" id="known_issues_crash__IMPALA-3441">
- <h3 class="title topictitle3" id="ariaid-title9">Impala should not crash for invalid avro serialized data</h3>
+ <h3 class="title topictitle3" id="ariaid-title11">Impala should not crash for invalid avro serialized data</h3>
<div class="body conbody">
<p class="p">
- Malformed Avro data, such as out-of-bounds integers or values in the wrong format, could cause a crash when queried.
+ Malformed Avro data, such as out-of-bounds integers or values in the wrong format,
+ could cause a crash when queried.
</p>
<p class="p">
@@ -193,21 +314,25 @@
<strong class="ph b">Severity:</strong> High
</p>
- <p class="p"><strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.7.0</span> and <span class="keyword">Impala 2.6.2</span>.</p>
+ <p class="p">
+ <strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.7.0</span> and
+ <span class="keyword">Impala 2.6.2</span>.
+ </p>
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title10" id="known_issues_crash__IMPALA-2592">
+ <article class="topic concept nested2" aria-labelledby="ariaid-title12" id="known_issues_crash__IMPALA-2592">
- <h3 class="title topictitle3" id="ariaid-title10">Queries may hang on server-to-server exchange errors</h3>
+ <h3 class="title topictitle3" id="ariaid-title12">Queries may hang on server-to-server exchange errors</h3>
<div class="body conbody">
<p class="p">
- The <code class="ph codeph">DataStreamSender::Channel::CloseInternal()</code> does not close the channel on an error. This causes the node on
- the other side of the channel to wait indefinitely, causing a hang.
+ The <code class="ph codeph">DataStreamSender::Channel::CloseInternal()</code> does not close the
+ channel on an error. This causes the node on the other side of the channel to wait
+ indefinitely, causing a hang.
</p>
<p class="p">
@@ -222,22 +347,25 @@
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title11" id="known_issues_crash__IMPALA-2365">
+ <article class="topic concept nested2" aria-labelledby="ariaid-title13" id="known_issues_crash__IMPALA-2365">
- <h3 class="title topictitle3" id="ariaid-title11">Impalad is crashing if udf jar is not available in hdfs location for first time</h3>
+ <h3 class="title topictitle3" id="ariaid-title13">Impalad is crashing if udf jar is not available in hdfs location for first time</h3>
<div class="body conbody">
<p class="p">
- If the JAR file corresponding to a Java UDF is removed from HDFS after the Impala <code class="ph codeph">CREATE FUNCTION</code> statement is
- issued, the <span class="keyword cmdname">impalad</span> daemon crashes.
+ If the JAR file corresponding to a Java UDF is removed from HDFS after the Impala
+ <code class="ph codeph">CREATE FUNCTION</code> statement is issued, the <span class="keyword cmdname">impalad</span>
+ daemon crashes.
</p>
<p class="p">
<strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-2365" target="_blank">IMPALA-2365</a>
</p>
- <p class="p"><strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.5.0</span>.</p>
+ <p class="p">
+ <strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.5.0</span>.
+ </p>
</div>
@@ -257,37 +385,101 @@
</div>
- <article class="topic concept nested2" aria-labelledby="ariaid-title13" id="known_issues_performance__IMPALA-3316">
- <h3 class="title topictitle3" id="ariaid-title13">Slow queries for Parquet tables with convert_legacy_hive_parquet_utc_timestamps=true</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title15" id="known_issues_performance__impala-6671">
+
+ <h3 class="title topictitle3" id="ariaid-title15">Metadata operations block read-only operations on unrelated tables</h3>
+
+ <div class="body conbody">
+
+ <p class="p">
+ Metadata operations that change the state of a table, like <code class="ph codeph">COMPUTE
+ STATS</code> or <code class="ph codeph">ALTER RECOVER PARTITIONS</code>, may delay metadata
+ propagation of unrelated unloaded tables triggered by statements like
+ <code class="ph codeph">DESCRIBE</code> or <code class="ph codeph">SELECT</code> queries.
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-6671" target="_blank">IMPALA-6671</a>
+ </p>
+
+ </div>
+
+ </article>
+
+ <article class="topic concept nested2" aria-labelledby="ariaid-title16" id="known_issues_performance__impala-5200">
+
+ <h3 class="title topictitle3" id="ariaid-title16">Profile timers not updated during long-running sort</h3>
+
+ <div class="body conbody">
+
+ <p class="p">
+ If you have a query plan with a long-running sort operation, e.g. minutes, the profile
+ timers are not updated to reflect the time spent in the sort until the sort starts
+ returning rows.
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-5200" target="_blank">IMPALA-5200</a>
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Workaround:</strong> Slow sorts can be identified by looking at "Peak Mem" in the
+ summary or "PeakMemoryUsage" in the profile. If a sort is consuming multiple GB of
+ memory per host, it will likely spend a significant amount of time sorting the data.
+ </p>
+
+ </div>
+
+ </article>
+
+ <article class="topic concept nested2" aria-labelledby="ariaid-title17" id="known_issues_performance__IMPALA-3316">
+
+ <h3 class="title topictitle3" id="ariaid-title17">Slow queries for Parquet tables with convert_legacy_hive_parquet_utc_timestamps=true</h3>
+
<div class="body conbody">
+
<p class="p">
- The configuration setting <code class="ph codeph">convert_legacy_hive_parquet_utc_timestamps=true</code>
- uses an underlying function that can be a bottleneck on high volume, highly concurrent
- queries due to the use of a global lock while loading time zone information. This bottleneck
- can cause slowness when querying Parquet tables, up to 30x for scan-heavy queries. The amount
- of slowdown depends on factors such as the number of cores and number of threads involved in the query.
+ The configuration setting
+ <code class="ph codeph">convert_legacy_hive_parquet_utc_timestamps=true</code> uses an underlying
+ function that can be a bottleneck on high volume, highly concurrent queries due to the
+ use of a global lock while loading time zone information. This bottleneck can cause
+ slowness when querying Parquet tables, up to 30x for scan-heavy queries. The amount of
+ slowdown depends on factors such as the number of cores and number of threads involved
+ in the query.
</p>
+
<div class="note note note_note"><span class="note__title notetitle">Note:</span>
<p class="p">
- The slowdown only occurs when accessing <code class="ph codeph">TIMESTAMP</code> columns within Parquet files that
- were generated by Hive, and therefore require the on-the-fly timezone conversion processing.
+ The slowdown only occurs when accessing <code class="ph codeph">TIMESTAMP</code> columns within
+ Parquet files that were generated by Hive, and therefore require the on-the-fly
+ timezone conversion processing.
</p>
</div>
- <p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-3316" target="_blank">IMPALA-3316</a></p>
- <p class="p"><strong class="ph b">Severity:</strong> High</p>
- <p class="p"><strong class="ph b">Workaround:</strong> If the <code class="ph codeph">TIMESTAMP</code> values stored in the table represent dates only,
- with no time portion, consider storing them as strings in <code class="ph codeph">yyyy-MM-dd</code> format.
- Impala implicitly converts such string values to <code class="ph codeph">TIMESTAMP</code> in calls to date/time
- functions.
+
+ <p class="p">
+ <strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-3316" target="_blank">IMPALA-3316</a>
</p>
+
+ <p class="p">
+ <strong class="ph b">Severity:</strong> High
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Workaround:</strong> If the <code class="ph codeph">TIMESTAMP</code> values stored in the table
+ represent dates only, with no time portion, consider storing them as strings in
+ <code class="ph codeph">yyyy-MM-dd</code> format. Impala implicitly converts such string values to
+ <code class="ph codeph">TIMESTAMP</code> in calls to date/time functions.
+ </p>
+
</div>
+
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title14" id="known_issues_performance__IMPALA-1480">
+ <article class="topic concept nested2" aria-labelledby="ariaid-title18" id="known_issues_performance__IMPALA-1480">
- <h3 class="title topictitle3" id="ariaid-title14">Slow DDL statements for tables with large number of partitions</h3>
+ <h3 class="title topictitle3" id="ariaid-title18">Slow DDL statements for tables with large number of partitions</h3>
<div class="body conbody">
@@ -303,37 +495,69 @@
<strong class="ph b">Workaround:</strong> Run the DDL statement in Hive if the slowness is an issue.
</p>
- <p class="p"><strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.5.0</span>.</p>
+ <p class="p">
+ <strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.5.0</span>.
+ </p>
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title15" id="known_issues_performance__ki_file_handle_cache">
- <h3 class="title topictitle3" id="ariaid-title15">Interaction of File Handle Cache with HDFS Appends and Short-Circuit Reads</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title19" id="known_issues_performance__ki_file_handle_cache">
+
+ <h3 class="title topictitle3" id="ariaid-title19">Interaction of File Handle Cache with HDFS Appends and Short-Circuit Reads</h3>
+
<div class="body conbody">
+
+ <p class="p">
+ If a data file used by Impala is being continuously appended or overwritten in place
+ by an HDFS mechanism, such as <span class="keyword cmdname">hdfs dfs -appendToFile</span>, interaction
+ with the file handle caching feature in <span class="keyword">Impala 2.10</span> and higher
+ could cause short-circuit reads to sometimes be disabled on some DataNodes. When a
+ mismatch is detected between the cached file handle and a data block that was
+ rewritten because of an append, short-circuit reads are turned off on the affected
+ host for a 10-minute period.
+ </p>
+
+ <p class="p">
+ The possibility of encountering such an issue is the reason why the file handle
+ caching feature is currently turned off by default. See
+ <a class="xref" href="impala_scalability.html">Scalability Considerations for Impala</a> for information about this feature and
+ how to enable it.
+ </p>
+
<p class="p">
- If a data file used by Impala is being continuously appended or overwritten in place by an
- HDFS mechanism, such as <span class="keyword cmdname">hdfs dfs -appendToFile</span>, interaction with the
- file handle caching feature in <span class="keyword">Impala 2.10</span> and higher could cause
- short-circuit reads to sometimes be disabled on some DataNodes. When a mismatch is detected
- between the cached file handle and a data block that was rewritten because of an append,
- short-circuit reads are turned off on the affected host for a 10-minute period.
+ <strong class="ph b">Bug:</strong>
+ <a class="xref" href="https://issues.apache.org/jira/browse/HDFS-12528" target="_blank">HDFS-12528</a>
</p>
+
<p class="p">
- The possibility of encountering such an issue is the reason why the file handle caching
- feature is currently turned off by default. See <a class="xref" href="impala_scalability.html">Scalability Considerations for Impala</a>
- for information about this feature and how to enable it.
+ <strong class="ph b">Severity:</strong> High
</p>
- <p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/HDFS-12528" target="_blank">HDFS-12528</a></p>
- <p class="p"><strong class="ph b">Severity:</strong> High</p>
-
- <p class="p"><strong class="ph b">Workaround:</strong> Verify whether your ETL process is susceptible to this issue before enabling the file handle caching feature.
- You can set the <span class="keyword cmdname">impalad</span> configuration option <code class="ph codeph">unused_file_handle_timeout_sec</code> to a time period
- that is shorter than the HDFS setting <code class="ph codeph">dfs.client.read.shortcircuit.streams.cache.expiry.ms</code>. (Keep in mind that
- the HDFS setting is in milliseconds while the Impala setting is in seconds.)
+
+ <p class="p">
+ <strong class="ph b">Workaround:</strong> Verify whether your ETL process is susceptible to this issue before
+ enabling the file handle caching feature. You can set the <span class="keyword cmdname">impalad</span>
+ configuration option <code class="ph codeph">unused_file_handle_timeout_sec</code> to a time period
+ that is shorter than the HDFS setting
+ <code class="ph codeph">dfs.client.read.shortcircuit.streams.cache.expiry.ms</code>. (Keep in mind
+ that the HDFS setting is in milliseconds while the Impala setting is in seconds.)
</p>
+
+ <p class="p">
+ <strong class="ph b">Resolution:</strong> Fixed in HDFS 2.10 and higher. Use the new HDFS parameter
+ <code class="ph codeph">dfs.domain.socket.disable.interval.seconds</code> to specify the amount of
+ time that short circuit reads are disabled on encountering an error. The default value
+ is 10 minutes (<code class="ph codeph">600</code> seconds). It is recommended that you set
+ <code class="ph codeph">dfs.domain.socket.disable.interval.seconds</code> to a small value, such as
+ <code class="ph codeph">1</code> second, when using the file handle cache. Setting <code class="ph codeph">
+ dfs.domain.socket.disable.interval.seconds</code> to <code class="ph codeph">0</code> is not
+ recommended as a non-zero interval protects the system if there is a persistent
+ problem with short circuit reads.
+ </p>
+
</div>
+
</article>
</article>
@@ -345,36 +569,54 @@
<div class="body conbody">
<p class="p">
- These issues affect the convenience of interacting directly with Impala, typically through the Impala shell or Hue.
+ These issues affect the convenience of interacting directly with Impala, typically
+ through the Impala shell or Hue.
</p>
</div>
- <article class="topic concept nested2" aria-labelledby="ariaid-title17" id="known_issues_usability__IMPALA-4570">
- <h3 class="title topictitle3" id="ariaid-title17">Impala shell tarball is not usable on systems with setuptools versions where '0.7' is a substring of the full version string</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title21" id="known_issues_usability__IMPALA-4570">
+
+ <h3 class="title topictitle3" id="ariaid-title21">Impala shell tarball is not usable on systems with setuptools versions where '0.7' is a substring of the full version string</h3>
+
<div class="body conbody">
+
<p class="p">
For example, this issue could occur on a system using setuptools version 20.7.0.
</p>
- <p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-4570" target="_blank">IMPALA-4570</a></p>
- <p class="p"><strong class="ph b">Severity:</strong> High</p>
- <p class="p"><strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.8</span> and higher.</p>
- <p class="p"><strong class="ph b">Workaround:</strong> Change to a setuptools version that does not have <code class="ph codeph">0.7</code> as
- a substring.
+
+ <p class="p">
+ <strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-4570" target="_blank">IMPALA-4570</a>
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Severity:</strong> High
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.8</span> and higher.
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Workaround:</strong> Change to a setuptools version that does not have
+ <code class="ph codeph">0.7</code> as a substring.
</p>
+
</div>
+
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title18" id="known_issues_usability__IMPALA-3133">
+ <article class="topic concept nested2" aria-labelledby="ariaid-title22" id="known_issues_usability__IMPALA-3133">
- <h3 class="title topictitle3" id="ariaid-title18">Unexpected privileges in show output</h3>
+ <h3 class="title topictitle3" id="ariaid-title22">Unexpected privileges in show output</h3>
<div class="body conbody">
<p class="p">
- Due to a timing condition in updating cached policy data from Sentry, the <code class="ph codeph">SHOW</code> statements for Sentry roles could
- sometimes display out-of-date role settings. Because Impala rechecks authorization for each SQL statement, this discrepancy does
- not represent a security issue for other statements.
+ Due to a timing condition in updating cached policy data from Sentry, the
+ <code class="ph codeph">SHOW</code> statements for Sentry roles could sometimes display out-of-date
+ role settings. Because Impala rechecks authorization for each SQL statement, this
+ discrepancy does not represent a security issue for other statements.
</p>
<p class="p">
@@ -386,23 +628,23 @@
</p>
<p class="p">
- <strong class="ph b">Resolution:</strong> Fixes have been issued for some but not all Impala releases. Check the JIRA for details of fix releases.
+ <strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.6.0</span> and
+ <span class="keyword">Impala 2.5.1</span>.
</p>
- <p class="p"><strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.6.0</span> and <span class="keyword">Impala 2.5.1</span>.</p>
-
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title19" id="known_issues_usability__IMPALA-1776">
+ <article class="topic concept nested2" aria-labelledby="ariaid-title23" id="known_issues_usability__IMPALA-1776">
- <h3 class="title topictitle3" id="ariaid-title19">Less than 100% progress on completed simple SELECT queries</h3>
+ <h3 class="title topictitle3" id="ariaid-title23">Less than 100% progress on completed simple SELECT queries</h3>
<div class="body conbody">
<p class="p">
- Simple <code class="ph codeph">SELECT</code> queries show less than 100% progress even though they are already completed.
+ Simple <code class="ph codeph">SELECT</code> queries show less than 100% progress even though they
+ are already completed.
</p>
<p class="p">
@@ -413,9 +655,9 @@
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title20" id="known_issues_usability__concept_lmx_dk5_lx">
+ <article class="topic concept nested2" aria-labelledby="ariaid-title24" id="known_issues_usability__concept_lmx_dk5_lx">
- <h3 class="title topictitle3" id="ariaid-title20">Unexpected column overflow behavior with INT datatypes</h3>
+ <h3 class="title topictitle3" id="ariaid-title24">Unexpected column overflow behavior with INT datatypes</h3>
<div class="body conbody">
@@ -429,8 +671,11 @@
</p>
<p class="p">
- <strong class="ph b">Bug:</strong>
- <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-3123" target="_blank">IMPALA-3123</a>
+ <strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-3123" target="_blank">IMPALA-3123</a>
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.6.0</span>.
</p>
</div>
@@ -446,23 +691,24 @@
<div class="body conbody">
<p class="p">
- These issues affect applications that use the JDBC or ODBC APIs, such as business intelligence tools or custom-written applications
- in languages such as Java or C++.
+ These issues affect applications that use the JDBC or ODBC APIs, such as business
+ intelligence tools or custom-written applications in languages such as Java or C++.
</p>
</div>
- <article class="topic concept nested2" aria-labelledby="ariaid-title22" id="known_issues_drivers__IMPALA-1792">
+ <article class="topic concept nested2" aria-labelledby="ariaid-title26" id="known_issues_drivers__IMPALA-1792">
- <h3 class="title topictitle3" id="ariaid-title22">ImpalaODBC: Can not get the value in the SQLGetData(m-x th column) after the SQLBindCol(m th column)</h3>
+ <h3 class="title topictitle3" id="ariaid-title26">ImpalaODBC: Can not get the value in the SQLGetData(m-x th column) after the SQLBindCol(m th column)</h3>
<div class="body conbody">
<p class="p">
- If the ODBC <code class="ph codeph">SQLGetData</code> is called on a series of columns, the function calls must follow the same order as the
- columns. For example, if data is fetched from column 2 then column 1, the <code class="ph codeph">SQLGetData</code> call for column 1 returns
+ If the ODBC <code class="ph codeph">SQLGetData</code> is called on a series of columns, the function
+ calls must follow the same order as the columns. For example, if data is fetched from
+ column 2 then column 1, the <code class="ph codeph">SQLGetData</code> call for column 1 returns
<code class="ph codeph">NULL</code>.
</p>
@@ -487,48 +733,96 @@
<div class="body conbody">
<p class="p">
- These issues relate to security features, such as Kerberos authentication, Sentry authorization, encryption, auditing, and
- redaction.
+ These issues relate to security features, such as Kerberos authentication, Sentry
+ authorization, encryption, auditing, and redaction.
</p>
</div>
- <article class="topic concept nested2" aria-labelledby="ariaid-title24" id="known_issues_security__IMPALA-5638">
- <h3 class="title topictitle3" id="ariaid-title24">Malicious user can gain unauthorized access to Kudu table data via Impala</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title28" id="known_issues_security__impala-4712">
+
+ <h3 class="title topictitle3" id="ariaid-title28">Transient kerberos authentication error during table loading</h3>
+
<div class="body conbody">
+
<p class="p">
- A malicious user with <code class="ph codeph">ALTER</code> permissions on an Impala table can access any
- other Kudu table data by altering the table properties to make it <span class="q">"external"</span>
- and then changing the underlying table mapping to point to other Kudu tables.
- This violates and works around the authorization requirement that creating a
- Kudu external table via Impala requires an <code class="ph codeph">ALL</code> privilege at the server scope.
- This privilege requirement for <code class="ph codeph">CREATE</code> commands is enforced to precisely avoid
- this scenario where a malicious user can change the underlying Kudu table
- mapping. The fix is to enforce the same privilege requirement for <code class="ph codeph">ALTER</code>
- commands that would make existing non-external Kudu tables external.
+ A transient Kerberos error can cause a table to get into a bad state with an error:
+ <code class="ph codeph">Failed to load metadata for table</code>.
</p>
- <p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-5638" target="_blank">IMPALA-5638</a></p>
- <p class="p"><strong class="ph b">Severity:</strong> High</p>
- <p class="p"><strong class="ph b">Workaround:</strong> A temporary workaround is to revoke <code class="ph codeph">ALTER</code> permissions on Impala tables.</p>
- <p class="p"><strong class="ph b">Resolution:</strong> Upgrade to an Impala version containing the fix for <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-5638" target="_blank">IMPALA-5638</a>.</p>
+
+ <p class="p">
+ <strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-4712" target="_blank">IMPALA-4712</a>
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Severity:</strong> High
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Workaround:</strong> Resolve the Kerberos authentication problem and run
+ <code class="ph codeph">INVALIDATE METADATA</code> on the affected table.
+ </p>
+
</div>
+
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title25" id="known_issues_security__renewable_kerberos_tickets">
+ <article class="topic concept nested2" aria-labelledby="ariaid-title29" id="known_issues_security__IMPALA-5638">
+ <h3 class="title topictitle3" id="ariaid-title29">Malicious user can gain unauthorized access to Kudu table data via Impala</h3>
+ <div class="body conbody">
- <h3 class="title topictitle3" id="ariaid-title25">Kerberos tickets must be renewable</h3>
+ <p class="p">
+ A malicious user with <code class="ph codeph">ALTER</code> permissions on an Impala table can access
+ any other Kudu table data by altering the table properties to make it <span class="q">"external"</span>
+ and then changing the underlying table mapping to point to other Kudu tables. This
+ violates and works around the authorization requirement that creating a Kudu external
+ table via Impala requires an <code class="ph codeph">ALL</code> privilege at the server scope. This
+ privilege requirement for <code class="ph codeph">CREATE</code> commands is enforced to precisely
+ avoid this scenario where a malicious user can change the underlying Kudu table
+ mapping. The fix is to enforce the same privilege requirement for
+ <code class="ph codeph">ALTER</code> commands that would make existing non-external Kudu tables
+ external.
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-5638" target="_blank">IMPALA-5638</a>
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Severity:</strong> High
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Workaround:</strong> A temporary workaround is to revoke <code class="ph codeph">ALTER</code>
+ permissions on Impala tables.
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.10.0</span>.
+ </p>
+
+ </div>
+
+ </article>
+
+ <article class="topic concept nested2" aria-labelledby="ariaid-title30" id="known_issues_security__renewable_kerberos_tickets">
+
+
+
+ <h3 class="title topictitle3" id="ariaid-title30">Kerberos tickets must be renewable</h3>
<div class="body conbody">
<p class="p">
- In a Kerberos environment, the <span class="keyword cmdname">impalad</span> daemon might not start if Kerberos tickets are not renewable.
+ In a Kerberos environment, the <span class="keyword cmdname">impalad</span> daemon might not start if
+ Kerberos tickets are not renewable.
</p>
<p class="p">
- <strong class="ph b">Workaround:</strong> Configure your KDC to allow tickets to be renewed, and configure <span class="ph filepath">krb5.conf</span> to request
- renewable tickets.
+ <strong class="ph b">Workaround:</strong> Configure your KDC to allow tickets to be renewed, and configure
+ <span class="ph filepath">krb5.conf</span> to request renewable tickets.
</p>
</div>
@@ -539,7 +833,38 @@
</article>
+ <article class="topic concept nested1" aria-labelledby="ariaid-title31" id="known_issues__impala-6726">
+
+ <h2 class="title topictitle2" id="ariaid-title31">Catalog server's kerberos ticket gets deleted after 'ticket_lifetime' on SLES11</h2>
+
+ <div class="body conbody">
+
+ <p class="p">
+ On SLES11, after 'ticket_lifetime', the kerberos ticket gets deleted by the Java krb5
+ library.
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-6726" target="_blank">https://issues.apache.org/jira/browse/IMPALA-6726</a>
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Severity:</strong> High
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Workaround:</strong> On Impala 2.11.0, set <code class="ph codeph">--use_kudu_kinit=false</code> in
+ Impala startup flag.
+ </p>
+
+ <p class="p">
+ On Impala 2.12.0, set <code class="ph codeph">--use_kudu_kinit=false</code> and
+ <code class="ph codeph">--use_krpc=false</code> in Impala startup flags.
+ </p>
+
+ </div>
+ </article>
<article class="topic concept nested1" aria-labelledby="known_issues_resources__ki_resources" id="known_issues__known_issues_resources">
@@ -548,74 +873,104 @@
<div class="body conbody">
<p class="p">
- These issues involve memory or disk usage, including out-of-memory conditions, the spill-to-disk feature, and resource management
- features.
+ These issues involve memory or disk usage, including out-of-memory conditions, the
+ spill-to-disk feature, and resource management features.
</p>
</div>
- <article class="topic concept nested2" aria-labelledby="ariaid-title27" id="known_issues_resources__IMPALA-5605">
- <h3 class="title topictitle3" id="ariaid-title27">Configuration to prevent crashes caused by thread resource limits</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title33" id="known_issues_resources__IMPALA-5605">
+
+ <h3 class="title topictitle3" id="ariaid-title33">Configuration to prevent crashes caused by thread resource limits</h3>
+
<div class="body conbody">
+
<p class="p">
- Impala could encounter a serious error due to resource usage under very high concurrency.
- The error message is similar to:
+ Impala could encounter a serious error due to resource usage under very high
+ concurrency. The error message is similar to:
</p>
+
<pre class="pre codeblock"><code>
F0629 08:20:02.956413 29088 llvm-codegen.cc:111] LLVM hit fatal error: Unable to allocate section memory!
terminate called after throwing an instance of 'boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<boost::thread_resource_error> >'
</code></pre>
- <p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-5605" target="_blank">IMPALA-5605</a></p>
- <p class="p"><strong class="ph b">Severity:</strong> High</p>
- <p class="p"><strong class="ph b">Workaround:</strong>
- To prevent such errors, configure each host running an <span class="keyword cmdname">impalad</span>
- daemon with the following settings:
+
+ <p class="p">
+ <strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-5605" target="_blank">IMPALA-5605</a>
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Severity:</strong> High
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Workaround:</strong> To prevent such errors, configure each host running an
+ <span class="keyword cmdname">impalad</span> daemon with the following settings:
</p>
+
<pre class="pre codeblock"><code>
echo 2000000 > /proc/sys/kernel/threads-max
echo 2000000 > /proc/sys/kernel/pid_max
echo 8000000 > /proc/sys/vm/max_map_count
</code></pre>
+
<p class="p">
- Add the following lines in <span class="ph filepath">/etc/security/limits.conf</span>:
+ Add the following lines in <span class="ph filepath">/etc/security/limits.conf</span>:
</p>
+
<pre class="pre codeblock"><code>
impala soft nproc 262144
impala hard nproc 262144
</code></pre>
+
</div>
+
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title28" id="known_issues_resources__flatbuffers_mem_usage">
- <h3 class="title topictitle3" id="ariaid-title28">Memory usage when compact_catalog_topic flag enabled</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title34" id="known_issues_resources__flatbuffers_mem_usage">
+
+ <h3 class="title topictitle3" id="ariaid-title34">Memory usage when compact_catalog_topic flag enabled</h3>
+
<div class="body conbody">
+
<p class="p">
- The efficiency improvement from <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-4029" target="_blank">IMPALA-4029</a>
- can cause an increase in size of the updates to Impala catalog metadata
- that are broadcast to the <span class="keyword cmdname">impalad</span> daemons
- by the <span class="keyword cmdname">statestored</span> daemon.
- The increase in catalog update topic size results in higher CPU and network
+ The efficiency improvement from <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-4029" target="_blank">IMPALA-4029</a> can
+ cause an increase in size of the updates to Impala catalog metadata that are broadcast
+ to the <span class="keyword cmdname">impalad</span> daemons by the <span class="keyword cmdname">statestored</span>
+ daemon. The increase in catalog update topic size results in higher CPU and network
utilization. By default, the increase in topic size is about 5-7%. If the
- <code class="ph codeph">compact_catalog_topic</code> flag is used, the
- size increase is more substantial, with a topic size approximately twice as
- large as in previous versions.
+ <code class="ph codeph">compact_catalog_topic</code> flag is used, the size increase is more
+ substantial, with a topic size approximately twice as large as in previous versions.
</p>
- <p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-5500" target="_blank">IMPALA-5500</a></p>
- <p class="p"><strong class="ph b">Severity:</strong> Medium</p>
+
<p class="p">
- <strong class="ph b">Workaround:</strong> Consider leaving the <code class="ph codeph">compact_catalog_topic</code>
- configuration setting at its default value of <code class="ph codeph">false</code> until
- this issue is resolved.
+ <strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-5500" target="_blank">IMPALA-5500</a>
</p>
- <p class="p"><strong class="ph b">Resolution:</strong> A fix is in the pipeline. Check the status of
- <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-5500" target="_blank">IMPALA-5500</a> for the release where the fix is available.</p>
+
+ <p class="p">
+ <strong class="ph b">Severity:</strong> Medium
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Workaround:</strong> Consider setting the <code class="ph codeph">compact_catalog_topic</code>
+ configuration setting to <code class="ph codeph">false</code> until this issue is resolved.
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.10</span>.
+ </p>
+
</div>
+
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title29" id="known_issues_resources__IMPALA-2294">
- <h3 class="title topictitle3" id="ariaid-title29">Kerberos initialization errors due to high memory usage</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title35" id="known_issues_resources__IMPALA-2294">
+
+ <h3 class="title topictitle3" id="ariaid-title35">Kerberos initialization errors due to high memory usage</h3>
+
<div class="body conbody">
+
<div class="p">
On a kerberized cluster with high memory utilization, <span class="keyword cmdname">kinit</span> commands executed after
every <code class="ph codeph">'kerberos_reinit_interval'</code> may cause out-of-memory errors, because executing
@@ -627,9 +982,23 @@ error was: Error(12): Cannot allocate memory
</code></pre>
</div>
- <p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-2294" target="_blank">IMPALA-2294</a></p>
- <p class="p"><strong class="ph b">Severity:</strong> High</p>
- <p class="p"><strong class="ph b">Workaround:</strong></p>
+
+ <p class="p">
+ <strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-2294" target="_blank">IMPALA-2294</a>
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Severity:</strong> High
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.11</span>.
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Workaround:</strong>
+ </p>
+
<div class="p">
The following command changes the <code class="ph codeph">vm.overcommit_memory</code>
setting immediately on a running host. However, this setting is reset
@@ -648,51 +1017,72 @@ vm.overcommit_memory=1
</div><p class="p">
Then run <code class="ph codeph">sysctl -p</code>. No reboot is needed.
</p>
+
</div>
+
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title30" id="known_issues_resources__drop_table_purge_s3a">
- <h3 class="title topictitle3" id="ariaid-title30">DROP TABLE PURGE on S3A table may not delete externally written files</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title36" id="known_issues_resources__drop_table_purge_s3a">
+
+ <h3 class="title topictitle3" id="ariaid-title36">DROP TABLE PURGE on S3A table may not delete externally written files</h3>
+
<div class="body conbody">
+
+ <p class="p">
+ A <code class="ph codeph">DROP TABLE PURGE</code> statement against an S3 table could leave the data
+ files behind, if the table directory and the data files were created with a
+ combination of <span class="keyword cmdname">hadoop fs</span> and <span class="keyword cmdname">aws s3</span> commands.
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-3558" target="_blank">IMPALA-3558</a>
+ </p>
+
<p class="p">
- A <code class="ph codeph">DROP TABLE PURGE</code> statement against an S3 table could leave the data files
- behind, if the table directory and the data files were created with a combination of
- <span class="keyword cmdname">hadoop fs</span> and <span class="keyword cmdname">aws s3</span> commands.
+ <strong class="ph b">Severity:</strong> High
</p>
- <p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-3558" target="_blank">IMPALA-3558</a></p>
- <p class="p"><strong class="ph b">Severity:</strong> High</p>
- <p class="p"><strong class="ph b">Resolution:</strong> The underlying issue with the S3A connector depends on the resolution of <a class="xref" href="https://issues.apache.org/jira/browse/HADOOP-13230" target="_blank">HADOOP-13230</a>.</p>
+
+ <p class="p">
+ <strong class="ph b">Resolution:</strong> The underlying issue with the S3A connector depends on the
+ resolution of
+ <a class="xref" href="https://issues.apache.org/jira/browse/HADOOP-13230" target="_blank">HADOOP-13230</a>.
+ </p>
+
</div>
+
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title31" id="known_issues_resources__catalogd_heap">
+ <article class="topic concept nested2" aria-labelledby="ariaid-title37" id="known_issues_resources__catalogd_heap">
- <h3 class="title topictitle3" id="ariaid-title31">Impala catalogd heap issues when upgrading to <span class="keyword">Impala 2.5</span></h3>
+ <h3 class="title topictitle3" id="ariaid-title37">Impala catalogd heap issues when upgrading to <span class="keyword">Impala 2.5</span></h3>
<div class="body conbody">
<p class="p">
- The default heap size for Impala <span class="keyword cmdname">catalogd</span> has changed in <span class="keyword">Impala 2.5</span> and higher:
+ The default heap size for Impala <span class="keyword cmdname">catalogd</span> has changed in
+ <span class="keyword">Impala 2.5</span> and higher:
</p>
<ul class="ul">
<li class="li">
<p class="p">
- Previously, by default <span class="keyword cmdname">catalogd</span> was using the JVM's default heap size, which is the smaller of 1/4th of the
- physical memory or 32 GB.
+ Previously, by default <span class="keyword cmdname">catalogd</span> was using the JVM's default
+ heap size, which is the smaller of 1/4th of the physical memory or 32 GB.
</p>
</li>
<li class="li">
<p class="p">
- Starting with <span class="keyword">Impala 2.5.0</span>, the default <span class="keyword cmdname">catalogd</span> heap size is 4 GB.
+ Starting with <span class="keyword">Impala 2.5.0</span>, the default
+ <span class="keyword cmdname">catalogd</span> heap size is 4 GB.
</p>
</li>
</ul>
<p class="p">
- For example, on a host with 128GB physical memory this will result in catalogd heap decreasing from 32GB to 4GB. This can result
- in out-of-memory errors in catalogd and leading to query failures.
+ For example, on a host with 128GB physical memory this will result in catalogd heap
+ decreasing from 32GB to 4GB. This can result in out-of-memory errors in catalogd and
+ leading to query failures.
</p>
<p class="p">
@@ -701,8 +1091,6 @@ vm.overcommit_memory=1
<p class="p">
<strong class="ph b">Workaround:</strong> Increase the <span class="keyword cmdname">catalogd</span> memory limit as follows.
-
-
</p>
<div class="p">
@@ -750,15 +1138,16 @@ vm.overcommit_memory=1
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title32" id="known_issues_resources__IMPALA-3509">
+ <article class="topic concept nested2" aria-labelledby="ariaid-title38" id="known_issues_resources__IMPALA-3509">
- <h3 class="title topictitle3" id="ariaid-title32">Breakpad minidumps can be very large when the thread count is high</h3>
+ <h3 class="title topictitle3" id="ariaid-title38">Breakpad minidumps can be very large when the thread count is high</h3>
<div class="body conbody">
<p class="p">
- The size of the breakpad minidump files grows linearly with the number of threads. By default, each thread adds 8 KB to the
- minidump size. Minidump files could consume significant disk space when the daemons have a high number of threads.
+ The size of the breakpad minidump files grows linearly with the number of threads. By
+ default, each thread adds 8 KB to the minidump size. Minidump files could consume
+ significant disk space when the daemons have a high number of threads.
</p>
<p class="p">
@@ -770,32 +1159,36 @@ vm.overcommit_memory=1
</p>
<p class="p">
- <strong class="ph b">Workaround:</strong> Add <code class="ph codeph">--minidump_size_limit_hint_kb=<var class="keyword varname">size</var></code> to set a soft upper limit on the
- size of each minidump file. If the minidump file would exceed that limit, Impala reduces the amount of information for each thread
- from 8 KB to 2 KB. (Full thread information is captured for the first 20 threads, then 2 KB per thread after that.) The minidump
- file can still grow larger than the <span class="q">"hinted"</span> size. For example, if you have 10,000 threads, the minidump file can be more
- than 20 MB.
+ <strong class="ph b">Workaround:</strong> Add
+ <code class="ph codeph">--minidump_size_limit_hint_kb=<var class="keyword varname">size</var></code> to set a soft
+ upper limit on the size of each minidump file. If the minidump file would exceed that
+ limit, Impala reduces the amount of information for each thread from 8 KB to 2 KB.
+ (Full thread information is captured for the first 20 threads, then 2 KB per thread
+ after that.) The minidump file can still grow larger than the <span class="q">"hinted"</span> size. For
+ example, if you have 10,000 threads, the minidump file can be more than 20 MB.
</p>
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title33" id="known_issues_resources__IMPALA-3662">
+ <article class="topic concept nested2" aria-labelledby="ariaid-title39" id="known_issues_resources__IMPALA-3662">
- <h3 class="title topictitle3" id="ariaid-title33">Parquet scanner memory increase after IMPALA-2736</h3>
+ <h3 class="title topictitle3" id="ariaid-title39">Parquet scanner memory increase after IMPALA-2736</h3>
<div class="body conbody">
<p class="p">
- The initial release of <span class="keyword">Impala 2.6</span> sometimes has a higher peak memory usage than in previous releases while reading
- Parquet files.
+ The initial release of <span class="keyword">Impala 2.6</span> sometimes has a higher peak
+ memory usage than in previous releases while reading Parquet files.
</p>
<div class="p">
- <span class="keyword">Impala 2.6</span> addresses the issue IMPALA-2736, which improves the efficiency of Parquet scans by up to 2x. The faster scans
- may result in a higher peak memory consumption compared to earlier versions of Impala due to the new column-wise row
- materialization strategy. You are likely to experience higher memory consumption in any of the following scenarios:
+ <span class="keyword">Impala 2.6</span> addresses the issue IMPALA-2736, which improves the
+ efficiency of Parquet scans by up to 2x. The faster scans may result in a higher peak
+ memory consumption compared to earlier versions of Impala due to the new column-wise
+ row materialization strategy. You are likely to experience higher memory consumption
+ in any of the following scenarios:
<ul class="ul">
<li class="li">
<p class="p">
@@ -805,14 +1198,15 @@ vm.overcommit_memory=1
<li class="li">
<p class="p">
- Very large rows due to big column values, for example, long strings or nested collections with many items.
+ Very large rows due to big column values, for example, long strings or nested
+ collections with many items.
</p>
</li>
<li class="li">
<p class="p">
- Producer/consumer speed imbalances, leading to more rows being buffered between a scan (producer) and downstream (consumer)
- plan nodes.
+ Producer/consumer speed imbalances, leading to more rows being buffered between
+ a scan (producer) and downstream (consumer) plan nodes.
</p>
</li>
</ul>
@@ -826,11 +1220,17 @@ vm.overcommit_memory=1
<strong class="ph b">Severity:</strong> High
</p>
+ <p class="p">
+ <strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.8.0</span>.
+ </p>
+
<div class="p">
- <strong class="ph b">Workaround:</strong> The following query options might help to reduce memory consumption in the Parquet scanner:
+ <strong class="ph b">Workaround:</strong> The following query options might help to reduce memory consumption
+ in the Parquet scanner:
<ul class="ul">
<li class="li">
- Reduce the number of scanner threads, for example: <code class="ph codeph">set num_scanner_threads=30</code>
+ Reduce the number of scanner threads, for example: <code class="ph codeph">set
+ num_scanner_threads=30</code>
</li>
<li class="li">
@@ -847,17 +1247,17 @@ vm.overcommit_memory=1
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title34" id="known_issues_resources__IMPALA-691">
+ <article class="topic concept nested2" aria-labelledby="ariaid-title40" id="known_issues_resources__IMPALA-691">
- <h3 class="title topictitle3" id="ariaid-title34">Process mem limit does not account for the JVM's memory usage</h3>
+ <h3 class="title topictitle3" id="ariaid-title40">Process mem limit does not account for the JVM's memory usage</h3>
<div class="body conbody">
<p class="p">
- Some memory allocated by the JVM used internally by Impala is not counted against the memory limit for the
- <span class="keyword cmdname">impalad</span> daemon.
+ Some memory allocated by the JVM used internally by Impala is not counted against the
+ memory limit for the <span class="keyword cmdname">impalad</span> daemon.
</p>
<p class="p">
@@ -865,19 +1265,20 @@ vm.overcommit_memory=1
</p>
<p class="p">
- <strong class="ph b">Workaround:</strong> To monitor overall memory usage, use the <span class="keyword cmdname">top</span> command, or add the memory figures in the
- Impala web UI <span class="ph uicontrol">/memz</span> tab to JVM memory usage shown on the <span class="ph uicontrol">/metrics</span> tab.
+ <strong class="ph b">Workaround:</strong> To monitor overall memory usage, use the <span class="keyword cmdname">top</span>
+ command, or add the memory figures in the Impala web UI <span class="ph uicontrol">/memz</span>
+ tab to JVM memory usage shown on the <span class="ph uicontrol">/metrics</span> tab.
</p>
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title35" id="known_issues_resources__IMPALA-2375">
+ <article class="topic concept nested2" aria-labelledby="ariaid-title41" id="known_issues_resources__IMPALA-2375">
- <h3 class="title topictitle3" id="ariaid-title35">Fix issues with the legacy join and agg nodes using --enable_partitioned_hash_join=false and --enable_partitioned_aggregation=false</h3>
+ <h3 class="title topictitle3" id="ariaid-title41">Fix issues with the legacy join and agg nodes using --enable_partitioned_hash_join=false and --enable_partitioned_aggregation=false</h3>
<div class="body conbody">
@@ -888,10 +1289,13 @@ vm.overcommit_memory=1
</p>
<p class="p">
- <strong class="ph b">Workaround:</strong> Transition away from the <span class="q">"old-style"</span> join and aggregation mechanism if practical.
+ <strong class="ph b">Workaround:</strong> Transition away from the <span class="q">"old-style"</span> join and aggregation
+ mechanism if practical.
</p>
- <p class="p"><strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.5.0</span>.</p>
+ <p class="p">
+ <strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.5.0</span>.
+ </p>
</div>
@@ -906,99 +1310,157 @@ vm.overcommit_memory=1
<div class="body conbody">
<p class="p">
- These issues can cause incorrect or unexpected results from queries. They typically only arise in very specific circumstances.
+ These issues can cause incorrect or unexpected results from queries. They typically only
+ arise in very specific circumstances.
</p>
</div>
- <article class="topic concept nested2" aria-labelledby="ariaid-title37" id="known_issues_correctness__IMPALA-4539">
- <h3 class="title topictitle3" id="ariaid-title37">Parquet scanner memory bug: I/O buffer is attached to output batch while scratch batch rows still reference it</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title43" id="known_issues_correctness__IMPALA-4539">
+
+ <h3 class="title topictitle3" id="ariaid-title43">Parquet scanner memory bug: I/O buffer is attached to output batch while scratch batch rows still reference it</h3>
+
+
<div class="body conbody">
+
<p class="p">
- Impala queries may return incorrect results when scanning plain-encoded string
- columns in uncompressed Parquet files. I/O buffers holding the string data are
- prematurely freed, leading to invalid memory reads and possibly
- non-deterministic results. This does not affect Parquet files that use a
- compression codec such as Snappy. Snappy is both strongly recommended generally
- and the default choice for Impala-written Parquet files.
+ Impala queries may return incorrect results when scanning plain-encoded string columns
+ in uncompressed Parquet files. I/O buffers holding the string data are prematurely
+ freed, leading to invalid memory reads and possibly non-deterministic results. This
+ does not affect Parquet files that use a compression codec such as Snappy. Snappy is
+ both strongly recommended generally and the default choice for Impala-written Parquet
+ files.
</p>
+
<p class="p">
How to determine whether a query might be affected:
</p>
+
<ul class="ul">
<li class="li">
The query must reference <code class="ph codeph">STRING</code> columns from a Parquet table.
</li>
+
<li class="li">
A selective filter on the Parquet table makes this issue more likely.
</li>
+
<li class="li">
- Identify any uncompressed Parquet files processed by the query.
- Examine the <code class="ph codeph">HDFS_SCAN_NODE</code> portion of a query profile that scans the
- suspected table. Use a query that performs a full table scan, and materializes the column
- values. (For example, <code class="ph codeph">SELECT MIN(<var class="keyword varname">colname</var>) FROM <var class="keyword varname">tablename</var></code>.)
- Look for <span class="q">"File Formats"</span>. A value containing <code class="ph codeph">PARQUET/NONE</code> means uncompressed Parquet.
+ Identify any uncompressed Parquet files processed by the query. Examine the
+ <code class="ph codeph">HDFS_SCAN_NODE</code> portion of a query profile that scans the suspected
+ table. Use a query that performs a full table scan, and materializes the column
+ values. (For example, <code class="ph codeph">SELECT MIN(<var class="keyword varname">colname</var>) FROM
+ <var class="keyword varname">tablename</var></code>.) Look for <span class="q">"File Formats"</span>. A value
+ containing <code class="ph codeph">PARQUET/NONE</code> means uncompressed Parquet.
</li>
+
<li class="li">
- Identify any plain-encoded string columns in the associated table. Pay special attention to tables
- containing Parquet files generated through Hive, Spark, or other mechanisms outside of Impala,
- because Impala uses Snappy compression by default for Parquet files. Use <code class="ph codeph">parquet-tools</code>
- to dump the file metadata. Note that a column could have several encodings within the same file (the column
- data is stored in several column chunks). Look for <code class="ph codeph">VLE:PLAIN</code> in the output of
- <code class="ph codeph">parquet-tools</code>, which means the values are plain encoded.
+ Identify any plain-encoded string columns in the associated table. Pay special
+ attention to tables containing Parquet files generated through Hive, Spark, or other
+ mechanisms outside of Impala, because Impala uses Snappy compression by default for
+ Parquet files. Use <code class="ph codeph">parquet-tools</code> to dump the file metadata. Note
+ that a column could have several encodings within the same file (the column data is
+ stored in several column chunks). Look for <code class="ph codeph">VLE:PLAIN</code> in the output
+ of <code class="ph codeph">parquet-tools</code>, which means the values are plain encoded.
</li>
</ul>
- <p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-4539" target="_blank">IMPALA-4539</a></p>
- <p class="p"><strong class="ph b">Severity:</strong> High</p>
- <p class="p"><strong class="ph b">Resolution:</strong> Upgrade to a version of Impala containing the fix for <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-4539" target="_blank">IMPALA-4539</a>.</p>
- <p class="p"><strong class="ph b">Workaround:</strong> Use Snappy or another compression codec for Parquet files.</p>
+
+ <p class="p">
+ <strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-4539" target="_blank">IMPALA-4539</a>
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Severity:</strong> High
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.8.0</span>.
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Workaround:</strong> Use Snappy or another compression codec for Parquet files.
+ </p>
+
</div>
+
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title38" id="known_issues_correctness__IMPALA-4513">
- <h3 class="title topictitle3" id="ariaid-title38">ABS(n) where n is the lowest bound for the int types returns negative values</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title44" id="known_issues_correctness__IMPALA-4513">
+
+ <h3 class="title topictitle3" id="ariaid-title44">ABS(n) where n is the lowest bound for the int types returns negative values</h3>
+
<div class="body conbody">
+
+ <p class="p">
+ If the <code class="ph codeph">abs()</code> function evaluates a number that is right at the lower
+ bound for an integer data type, the positive result cannot be represented in the same
+ type, and the result is returned as a negative number. For example,
+ <code class="ph codeph">abs(-128)</code> returns -128 because the argument is interpreted as a
+ <code class="ph codeph">TINYINT</code> and the return value is also a <code class="ph codeph">TINYINT</code>.
+ </p>
+
<p class="p">
- If the <code class="ph codeph">abs()</code> function evaluates a number that is right at the lower bound for
- an integer data type, the positive result cannot be represented in the same type, and the
- result is returned as a negative number. For example, <code class="ph codeph">abs(-128)</code> returns -128
- because the argument is interpreted as a <code class="ph codeph">TINYINT</code> and the return value is also
- a <code class="ph codeph">TINYINT</code>.
+ <strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-4513" target="_blank">IMPALA-4513</a>
</p>
- <p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-4513" target="_blank">IMPALA-4513</a></p>
- <p class="p"><strong class="ph b">Severity:</strong> High</p>
- <p class="p"><strong class="ph b">Workaround:</strong> Cast the integer value to a larger type. For example, rewrite
- <code class="ph codeph">abs(<var class="keyword varname">tinyint_col</var>)</code> as <code class="ph codeph">abs(cast(<var class="keyword varname">tinyint_col</var> as smallint))</code>.</p>
+
+ <p class="p">
+ <strong class="ph b">Severity:</strong> High
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Workaround:</strong> Cast the integer value to a larger type. For example, rewrite
+ <code class="ph codeph">abs(<var class="keyword varname">tinyint_col</var>)</code> as
+ <code class="ph codeph">abs(cast(<var class="keyword varname">tinyint_col</var> as smallint))</code>.
+ </p>
+
</div>
+
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title39" id="known_issues_correctness__IMPALA-4266">
- <h3 class="title topictitle3" id="ariaid-title39">Java udf expression returning string in group by can give incorrect results.</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title45" id="known_issues_correctness__IMPALA-4266">
+
+ <h3 class="title topictitle3" id="ariaid-title45">Java udf expression returning string in group by can give incorrect results.</h3>
+
<div class="body conbody">
+
<p class="p">
- If the <code class="ph codeph">GROUP BY</code> clause included a call to a Java UDF that returned a string value,
- the UDF could return an incorrect result.
+ If the <code class="ph codeph">GROUP BY</code> clause included a call to a Java UDF that returned a
+ string value, the UDF could return an incorrect result.
</p>
- <p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-4266" target="_blank">IMPALA-4266</a></p>
- <p class="p"><strong class="ph b">Severity:</strong> High</p>
- <p class="p"><strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.8</span> and higher.</p>
- <p class="p"><strong class="ph b">Workaround:</strong> Rewrite the expression to concatenate the results of the Java UDF with an
- empty string call. For example, rewrite <code class="ph codeph">my_hive_udf()</code> as
+
+ <p class="p">
+ <strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-4266" target="_blank">IMPALA-4266</a>
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Severity:</strong> High
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.8</span> and higher.
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Workaround:</strong> Rewrite the expression to concatenate the results of the Java UDF
+ with an empty string call. For example, rewrite <code class="ph codeph">my_hive_udf()</code> as
<code class="ph codeph">concat(my_hive_udf(), '')</code>.
</p>
+
</div>
+
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title40" id="known_issues_correctness__IMPALA-3084">
+ <article class="topic concept nested2" aria-labelledby="ariaid-title46" id="known_issues_correctness__IMPALA-3084">
- <h3 class="title topictitle3" id="ariaid-title40">Incorrect assignment of NULL checking predicate through an outer join of a nested collection.</h3>
+ <h3 class="title topictitle3" id="ariaid-title46">Incorrect assignment of NULL checking predicate through an outer join of a nested collection.</h3>
<div class="body conbody">
<p class="p">
- A query could return wrong results (too many or too few <code class="ph codeph">NULL</code> values) if it referenced an outer-joined nested
- collection and also contained a null-checking predicate (<code class="ph codeph">IS NULL</code>, <code class="ph codeph">IS NOT NULL</code>, or the
+ A query could return wrong results (too many or too few <code class="ph codeph">NULL</code> values)
+ if it referenced an outer-joined nested collection and also contained a null-checking
+ predicate (<code class="ph codeph">IS NULL</code>, <code class="ph codeph">IS NOT NULL</code>, or the
<code class="ph codeph"><=></code> operator) in the <code class="ph codeph">WHERE</code> clause.
</p>
@@ -1010,21 +1472,23 @@ vm.overcommit_memory=1
<strong class="ph b">Severity:</strong> High
</p>
- <p class="p"><strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.7.0</span>.</p>
+ <p class="p">
+ <strong class="ph b">Resolution:</strong> Fixed in <span class="keyword">Impala 2.7.0</span>.
+ </p>
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title41" id="known_issues_correctness__IMPALA-3094">
+ <article class="topic concept nested
<TRUNCATED>
[13/15] impala git commit: [DOCS] Add Impala docs from branch 2.x
Posted by mi...@apache.org.
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_compute_stats_min_sample_size.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_compute_stats_min_sample_size.html b/docs/build/html/topics/impala_compute_stats_min_sample_size.html
new file mode 100644
index 0000000..39abd3c
--- /dev/null
+++ b/docs/build/html/topics/impala_compute_stats_min_sample_size.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html
+ SYSTEM "about:legacy-compat">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="compute_stats_sample_min_sample_size"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>COMPUTE_STATS_MIN_SAMPLE_SIZE Query Option</title></head><body id="compute_stats_sample_min_sample_size"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+ <h1 class="title topictitle1" id="ariaid-title1">COMPUTE_STATS_MIN_SAMPLE_SIZE Query Option</h1>
+
+
+ <div class="body conbody">
+ <p class="p">The <code class="ph codeph">COMPUTE_STATS_MIN_SAMPLE_SIZE</code> query option specifies
+ the minimum number of bytes that will be scanned in <code class="ph codeph">COMPUTE STATS
+ TABLESAMPLE</code>, regardless of the user-supplied sampling percent.
+ This query option prevents sampling for very small tables where accurate
+ stats can be obtained cheaply without sampling because the minimum sample
+ size is required to get meaningful stats.</p>
+ <p class="p">
+ <strong class="ph b">Type:</strong> integer
+ </p>
+ <p class="p"><strong class="ph b">Default:</strong> 1GB</p>
+ <p class="p"><strong class="ph b">Added in</strong>: <span class="keyword">Impala 2.12</span></p>
+ <p class="p">
+ <strong class="ph b">Usage notes:</strong>
+ </p>
+ </div>
+<nav role="navigation" class="related-links"><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_query_options.html">Query Options for the SET Statement</a></div></div></nav></article></main></body></html>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_concepts.html
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diff --git a/docs/build/html/topics/impala_concepts.html b/docs/build/html/topics/impala_concepts.html
index 0e4a1df..7ccc433 100644
--- a/docs/build/html/topics/impala_concepts.html
+++ b/docs/build/html/topics/impala_concepts.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_components.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_development.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_hadoop.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="concepts"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Concepts and Architecture</title></head><body id="concepts"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_components.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_development.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_hadoop.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="concepts"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Concepts and Architecture</title></head><body id="concepts"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Impala Concepts and Architecture</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_conditional_functions.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_conditional_functions.html b/docs/build/html/topics/impala_conditional_functions.html
index 7307580..1000716 100644
--- a/docs/build/html/topics/impala_conditional_functions.html
+++ b/docs/build/html/topics/impala_conditional_functions.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="conditional_functions"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Conditional Functions</title></head><body id="conditional_functions"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="conditional_functions"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Conditional Functions</title></head><body id="conditional_functions"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Impala Conditional Functions</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_config.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_config.html b/docs/build/html/topics/impala_config.html
index 2753128..3fdb35c 100644
--- a/docs/build/html/topics/impala_config.html
+++ b/docs/build/html/topics/impala_config.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_config_performance.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_odbc.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_jdbc.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="config"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Managing Impala</title></head><body id="config"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_config_performance.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_odbc.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_jdbc.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="config"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Managing Impala</title></head><body id="config"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Managing Impala</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_config_options.html
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diff --git a/docs/build/html/topics/impala_config_options.html b/docs/build/html/topics/impala_config_options.html
index 59cda57..8fb15f8 100644
--- a/docs/build/html/topics/impala_config_options.html
+++ b/docs/build/html/topics/impala_config_options.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_processes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="config_options"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Modifying Impala Startup Options</title></head><body id="config_options"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_processes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="config_options"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Modifying Impala Startup Options</title></head><body id="config_options"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Modifying Impala Startup Options</h1>
@@ -346,12 +346,41 @@ Starting Impala Catalog Server: [ OK ]</code></pre>
data, or performs other kinds of DDL and DML operations.
</p>
- <p class="p">
- By default, the metadata loading and caching on startup happens asynchronously, so Impala can begin
- accepting requests promptly. To enable the original behavior, where Impala waited until all metadata was
- loaded before accepting any requests, set the <span class="keyword cmdname">catalogd</span> configuration option
- <code class="ph codeph">--load_catalog_in_background=false</code>.
- </p>
+ <div class="p">
+ Use <code class="ph codeph">--load_catalog_in_background</code> option to control when
+ the metadata of a table is loaded.
+ <ul class="ul">
+ <li class="li">
+ If set to <code class="ph codeph">false</code>, the metadata of a table is
+ loaded when it is referenced for the first time. This means that the
+ first run of a particular query can be slower than subsequent runs.
+ Starting in Impala 2.2, the default for
+ <code class="ph codeph">load_catalog_in_background</code> is
+ <code class="ph codeph">false</code>.
+ </li>
+ <li class="li">
+ If set to <code class="ph codeph">true</code>, the catalog service attempts to
+ load metadata for a table even if no query needed that metadata. So
+ metadata will possibly be already loaded when the first query that
+ would need it is run. However, for the following reasons, we
+ recommend not to set the option to <code class="ph codeph">true</code>.
+ <ul class="ul">
+ <li class="li">
+ Background load can interfere with query-specific metadata
+ loading. This can happen on startup or after invalidating
+ metadata, with a duration depending on the amount of metadata,
+ and can lead to a seemingly random long running queries that are
+ difficult to diagnose.
+ </li>
+ <li class="li">
+ Impala may load metadata for tables that are possibly never
+ used, potentially increasing catalog size and consequently memory
+ usage for both catalog service and Impala Daemon.
+ </li>
+ </ul>
+ </li>
+ </ul>
+ </div>
</div>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_config_performance.html
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diff --git a/docs/build/html/topics/impala_config_performance.html b/docs/build/html/topics/impala_config_performance.html
index e3c2708..bf13754 100644
--- a/docs/build/html/topics/impala_config_performance.html
+++ b/docs/build/html/topics/impala_config_performance.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_config.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="config_performance"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Post-Installation Configuration for Impala</title></head><body id="config_performance"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_config.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="config_performance"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Post-Installation Configuration for Impala</title></head><body id="config_performance"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Post-Installation Configuration for Impala</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_connecting.html
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diff --git a/docs/build/html/topics/impala_connecting.html b/docs/build/html/topics/impala_connecting.html
index da3bfce..2352a43 100644
--- a/docs/build/html/topics/impala_connecting.html
+++ b/docs/build/html/topics/impala_connecting.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_impala_shell.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="connecting"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Connecting to impalad through impala-shell</title></head><body id="connecting"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_impala_shell.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="connecting"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Connecting to impalad through impala-shell</title></head><body id="connecting"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Connecting to impalad through impala-shell</h1>
@@ -93,7 +93,7 @@ $ impala-shell -i <var class="keyword varname">some.other.hostname</var>:<var cl
<pre class="pre codeblock"><code>Welcome to the Impala shell. Press TAB twice to see a list of available commands.
...
<span class="ph">(Shell
- build version: Impala Shell v2.8.x (<var class="keyword varname">hash</var>) built on
+ build version: Impala Shell v2.12.x (<var class="keyword varname">hash</var>) built on
<var class="keyword varname">date</var>)</span>
[Not connected] > </code></pre>
</li>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_conversion_functions.html
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diff --git a/docs/build/html/topics/impala_conversion_functions.html b/docs/build/html/topics/impala_conversion_functions.html
index 4ced960..d3f90b8 100644
--- a/docs/build/html/topics/impala_conversion_functions.html
+++ b/docs/build/html/topics/impala_conversion_functions.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="conversion_functions"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Type Conversion Functions</title></head><body id="conversion_functions"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="conversion_functions"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Type Conversion Functions</title></head><body id="conversion_functions"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Impala Type Conversion Functions</h1>
@@ -56,7 +56,7 @@ for tables with millions or billions of rows.
</p>
<p class="p">
The way this function deals with time zones when converting to or from <code class="ph codeph">TIMESTAMP</code>
- values is affected by the <code class="ph codeph">-use_local_tz_for_unix_timestamp_conversions</code> startup flag for the
+ values is affected by the <code class="ph codeph">--use_local_tz_for_unix_timestamp_conversions</code> startup flag for the
<span class="keyword cmdname">impalad</span> daemon. See <a class="xref" href="../shared/../topics/impala_timestamp.html#timestamp">TIMESTAMP Data Type</a> for details about
how Impala handles time zone considerations for the <code class="ph codeph">TIMESTAMP</code> data type.
</p>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_count.html
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diff --git a/docs/build/html/topics/impala_count.html b/docs/build/html/topics/impala_count.html
index e28a208..3f9b5ba 100644
--- a/docs/build/html/topics/impala_count.html
+++ b/docs/build/html/topics/impala_count.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_aggregate_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="count"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>COUNT Function</title></head><body id="count"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_aggregate_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="count"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>COUNT Function</title></head><body id="count"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">COUNT Function</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_create_database.html
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+++ b/docs/build/html/topics/impala_create_database.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="create_database"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>CREATE DATABASE Statement</title></head><body id="create_database"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="create_database"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>CREATE DATABASE Statement</title></head><body id="create_database"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">CREATE DATABASE Statement</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_create_function.html
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index ced2c74..c3538eb 100644
--- a/docs/build/html/topics/impala_create_function.html
+++ b/docs/build/html/topics/impala_create_function.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="create_function"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>CREATE FUNCTION Statement</title></head><body id="create_function"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="create_function"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>CREATE FUNCTION Statement</title></head><body id="create_function"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">CREATE FUNCTION Statement</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_create_role.html
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diff --git a/docs/build/html/topics/impala_create_role.html b/docs/build/html/topics/impala_create_role.html
index 88913a7..da0cb07 100644
--- a/docs/build/html/topics/impala_create_role.html
+++ b/docs/build/html/topics/impala_create_role.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="create_role"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>CREATE ROLE Statement (Impala 2.0 or higher only)</title></head><body id="create_role"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="create_role"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>CREATE ROLE Statement (Impala 2.0 or higher only)</title></head><body id="create_role"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">CREATE ROLE Statement (<span class="keyword">Impala 2.0</span> or higher only)</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_create_table.html
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diff --git a/docs/build/html/topics/impala_create_table.html b/docs/build/html/topics/impala_create_table.html
index 902f321..e869ff5 100644
--- a/docs/build/html/topics/impala_create_table.html
+++ b/docs/build/html/topics/impala_create_table.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="create_table"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>CREATE TABLE Statement</title></head><body class="impala sql_statement" id="create_table"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="create_table"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>CREATE TABLE Statement</title></head><body class="impala sql_statement" id="create_table"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1 impala_title sql_statement_title" id="ariaid-title1">CREATE TABLE Statement</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_create_view.html
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diff --git a/docs/build/html/topics/impala_create_view.html b/docs/build/html/topics/impala_create_view.html
index 7d5d5a9..88c9c06 100644
--- a/docs/build/html/topics/impala_create_view.html
+++ b/docs/build/html/topics/impala_create_view.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="create_view"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>CREATE VIEW Statement</title></head><body id="create_view"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="create_view"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>CREATE VIEW Statement</title></head><body id="create_view"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">CREATE VIEW Statement</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_databases.html
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diff --git a/docs/build/html/topics/impala_databases.html b/docs/build/html/topics/impala_databases.html
index db5a200..8fa47aa 100644
--- a/docs/build/html/topics/impala_databases.html
+++ b/docs/build/html/topics/impala_databases.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_schema_objects.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="databases"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Overview of Impala Databases</title></head><body id="databases"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_schema_objects.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="databases"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Overview of Impala Databases</title></head><body id="databases"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Overview of Impala Databases</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_datatypes.html
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diff --git a/docs/build/html/topics/impala_datatypes.html b/docs/build/html/topics/impala_datatypes.html
index c308020..d41ea2d 100644
--- a/docs/build/html/topics/impala_datatypes.html
+++ b/docs/build/html/topics/impala_datatypes.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_array.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_bigint.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_boolean.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_char.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_decimal.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_double.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_float.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_int.html"><meta name="DC.Relation" scheme="URI" content=".
./topics/impala_map.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_real.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_smallint.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_string.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_struct.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_timestamp.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_tinyint.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_varchar.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_complex_types.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="datatypes"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Data Types</title></h
ead><body id="datatypes"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_array.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_bigint.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_boolean.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_char.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_decimal.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_double.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_float.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_int.html"><meta name="DC.Relation" scheme="URI" content=".
./topics/impala_map.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_real.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_smallint.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_string.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_struct.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_timestamp.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_tinyint.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_varchar.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_complex_types.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="datatypes"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Data Types</title></h
ead><body id="datatypes"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Data Types</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_datetime_functions.html
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diff --git a/docs/build/html/topics/impala_datetime_functions.html b/docs/build/html/topics/impala_datetime_functions.html
index d3cafaf..26d477e 100644
--- a/docs/build/html/topics/impala_datetime_functions.html
+++ b/docs/build/html/topics/impala_datetime_functions.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="datetime_functions"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Date and Time Functions</title></head><body id="datetime_functions"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="datetime_functions"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Date and Time Functions</title></head><body id="datetime_functions"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Impala Date and Time Functions</h1>
@@ -25,7 +25,7 @@
<p class="p">
Some of these functions are affected by the setting of the
- <code class="ph codeph">-use_local_tz_for_unix_timestamp_conversions</code> startup flag for the
+ <code class="ph codeph">--use_local_tz_for_unix_timestamp_conversions</code> startup flag for the
<span class="keyword cmdname">impalad</span> daemon. This setting is off by default, meaning that
functions such as <code class="ph codeph">from_unixtime()</code> and <code class="ph codeph">unix_timestamp()</code>
consider the input values to always represent the UTC time zone.
@@ -550,7 +550,6 @@ select now() as right_now, datediff(now(), now() - interval 18 hours) as 18_hour
<dt class="dt dlterm" id="datetime_functions__day">
-
<code class="ph codeph">day(timestamp date), <span class="ph" id="datetime_functions__dayofmonth">dayofmonth(timestamp date)</span></code>
</dt>
@@ -673,7 +672,6 @@ select now() + interval 1 day as tomorrow,
<dt class="dt dlterm" id="datetime_functions__dayofweek">
-
<code class="ph codeph">dayofweek(timestamp date)</code>
</dt>
@@ -808,45 +806,51 @@ select now() as right_now, days_sub(now(), 31) as 31_days_ago;
<dt class="dt dlterm" id="datetime_functions__extract">
- <code class="ph codeph">extract(timestamp, string unit)</code><code class="ph codeph">extract(unit FROM timestamp)</code>
+ <code class="ph codeph">extract(timestamp, string unit)</code>, <code class="ph codeph">extract(unit FROM timestamp)</code>
</dt>
<dd class="dd">
- <strong class="ph b">Purpose:</strong> Returns one of the numeric date or time fields from a <code class="ph codeph">TIMESTAMP</code> value.
- <p class="p">
- <strong class="ph b">Unit argument:</strong> The <code class="ph codeph">unit</code> string can be one of <code class="ph codeph">epoch</code>,
- <code class="ph codeph">year</code>, <code class="ph codeph">month</code>, <code class="ph codeph">day</code>, <code class="ph codeph">hour</code>,
- <code class="ph codeph">minute</code>, <code class="ph codeph">second</code>, or <code class="ph codeph">millisecond</code>.
- This argument value is case-insensitive.
- </p>
- <div class="p">
- In Impala 2.0 and higher, you can use special syntax rather than a regular function call, for
- compatibility with code that uses the SQL-99 format with the <code class="ph codeph">FROM</code> keyword. With this
- style, the unit names are identifiers rather than <code class="ph codeph">STRING</code> literals. For example, the
- following calls are both equivalent:
-<pre class="pre codeblock"><code>extract(year from now());
+ <strong class="ph b">Purpose:</strong> Returns one of the numeric date or time fields from a
+ <code class="ph codeph">TIMESTAMP</code> value.
+ <p class="p">
+ <strong class="ph b">Unit argument:</strong> The <code class="ph codeph">unit</code> string can be one of
+ <code class="ph codeph">epoch</code>, <code class="ph codeph">year</code>,
+ <code class="ph codeph">quarter</code>, <code class="ph codeph">month</code>,
+ <code class="ph codeph">day</code>, <code class="ph codeph">hour</code>,
+ <code class="ph codeph">minute</code>, <code class="ph codeph">second</code>, or
+ <code class="ph codeph">millisecond</code>. This argument value is
+ case-insensitive.
+ </p>
+ <div class="p"> In Impala 2.0 and higher, you can use special syntax
+ rather than a regular function call, for compatibility with code
+ that uses the SQL-99 format with the <code class="ph codeph">FROM</code> keyword.
+ With this style, the unit names are identifiers rather than
+ <code class="ph codeph">STRING</code> literals. For example, the following calls
+ are both equivalent:
+ <pre class="pre codeblock"><code>extract(year from now());
extract(now(), "year");
</code></pre>
</div>
<p class="p">
<strong class="ph b">Usage notes:</strong>
</p>
+ <p class="p"> Typically used in <code class="ph codeph">GROUP BY</code> queries to arrange
+ results by hour, day, month, and so on. You can also use this
+ function in an <code class="ph codeph">INSERT ... SELECT</code> into a partitioned
+ table to split up <code class="ph codeph">TIMESTAMP</code> values into individual
+ parts, if the partitioned table has separate partition key columns
+ representing year, month, day, and so on. If you need to divide by
+ more complex units of time, such as by week or by quarter, use the
+ <code class="ph codeph">TRUNC()</code> function instead. </p>
<p class="p">
- Typically used in <code class="ph codeph">GROUP BY</code> queries to arrange results by hour,
- day, month, and so on. You can also use this function in an <code class="ph codeph">INSERT ... SELECT</code> into a
- partitioned table to split up <code class="ph codeph">TIMESTAMP</code> values into individual parts, if the
- partitioned table has separate partition key columns representing year, month, day, and so on. If you
- need to divide by more complex units of time, such as by week or by quarter, use the
- <code class="ph codeph">TRUNC()</code> function instead.
- </p>
- <p class="p">
- <strong class="ph b">Return type:</strong> <code class="ph codeph">int</code>
+ <strong class="ph b">Return type:</strong>
+ <code class="ph codeph">int</code>
</p>
<p class="p">
<strong class="ph b">Examples:</strong>
</p>
-<pre class="pre codeblock"><code>
+ <pre class="pre codeblock"><code>
select now() as right_now,
extract(year from now()) as this_year,
extract(month from now()) as this_month;
@@ -985,7 +989,7 @@ select from_timestamp('1984-09-25 16:45:30.125', 'MMM dd, yyyy HH:mm:ss.SSS');
</p>
<p class="p">
The way this function deals with time zones when converting to or from <code class="ph codeph">TIMESTAMP</code>
- values is affected by the <code class="ph codeph">-use_local_tz_for_unix_timestamp_conversions</code> startup flag for the
+ values is affected by the <code class="ph codeph">--use_local_tz_for_unix_timestamp_conversions</code> startup flag for the
<span class="keyword cmdname">impalad</span> daemon. See <a class="xref" href="../shared/../topics/impala_timestamp.html#timestamp">TIMESTAMP Data Type</a> for details about
how Impala handles time zone considerations for the <code class="ph codeph">TIMESTAMP</code> data type.
</p>
@@ -1615,7 +1619,6 @@ select now() as right_now, minutes_sub(now(), 90) as 90_minutes_ago;
<dt class="dt dlterm" id="datetime_functions__month">
-
<code class="ph codeph">month(timestamp date)</code>
</dt>
@@ -1640,6 +1643,19 @@ select now() as right_now, month(now()) as current_month;
+ <dt class="dt dlterm" id="datetime_functions__monthname">
+ <code class="ph codeph">monthname(timestamp date)</code>
+ </dt>
+ <dd class="dd">
+ <strong class="ph b">Purpose:</strong> Returns the month field from a
+ <code class="ph codeph">TIMESTAMP</code> value, converted to the string
+ corresponding to that month name.
+ <p class="p">
+ <strong class="ph b">Return type:</strong> <code class="ph codeph">string</code>
+ </p>
+ </dd>
+
+
<dt class="dt dlterm" id="datetime_functions__months_add">
@@ -2073,6 +2089,19 @@ select now() as right_now,
+ <dt class="dt dlterm" id="datetime_functions__quarter">
+ <code class="ph codeph">quarter(timestamp date)</code>
+ </dt>
+ <dd class="dd">
+ <strong class="ph b">Purpose:</strong> Returns the quarter in the input
+ <code class="ph codeph">TIMESTAMP</code> expression as an integer value, 1, 2, 3, or
+ 4, where 1 represents January 1 through March 31.
+ <p class="p">
+ <strong class="ph b">Return type:</strong> <code class="ph codeph">int</code>
+ </p>
+ </dd>
+
+
<dt class="dt dlterm" id="datetime_functions__second">
@@ -2677,9 +2706,12 @@ select now() + interval 2 weeks as 2_weeks_from_now,
<dd class="dd">
- <strong class="ph b">Purpose:</strong> Returns an integer value representing the current date and time as a delta from the Unix
- epoch, or converts from a specified date and time value represented as a <code class="ph codeph">TIMESTAMP</code> or
- <code class="ph codeph">STRING</code>.
+ <strong class="ph b">Purpose:</strong> Returns a Unix time, which is a number of seconds
+ elapsed since '1970-01-01 00:00:00' UTC. If called with no
+ argument, the current date and time is converted to its Unix time. If
+ called with arguments, the first argument represented as the
+ <code class="ph codeph">TIMESTAMP</code> or <code class="ph codeph">STRING</code> is converted to
+ its Unix time.
<p class="p">
<strong class="ph b">Return type:</strong> <code class="ph codeph">bigint</code>
</p>
@@ -2728,7 +2760,7 @@ select now() + interval 2 weeks as 2_weeks_from_now,
</div>
<p class="p">
The way this function deals with time zones when converting to or from <code class="ph codeph">TIMESTAMP</code>
- values is affected by the <code class="ph codeph">-use_local_tz_for_unix_timestamp_conversions</code> startup flag for the
+ values is affected by the <code class="ph codeph">--use_local_tz_for_unix_timestamp_conversions</code> startup flag for the
<span class="keyword cmdname">impalad</span> daemon. See <a class="xref" href="../shared/../topics/impala_timestamp.html#timestamp">TIMESTAMP Data Type</a> for details about
how Impala handles time zone considerations for the <code class="ph codeph">TIMESTAMP</code> data type.
</p>
@@ -2870,8 +2902,7 @@ select current_timestamp(), utc_timestamp();
<dt class="dt dlterm" id="datetime_functions__weekofyear">
-
- <code class="ph codeph">weekofyear(timestamp date)</code>
+ <code class="ph codeph">week(timestamp date)</code>, <code class="ph codeph">weekofyear(timestamp date)</code>
</dt>
<dd class="dd">
@@ -3071,4 +3102,4 @@ select cast('2016-02-29' as timestamp) as feb_29_2016,
</dl>
</div>
-<nav role="navigation" class="related-links"><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_functions.html">Impala Built-In Functions</a></div></div></nav></article></main></body></html>
\ No newline at end of file
+<nav role="navigation" class="related-links"><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_functions.html">Impala Built-In Functions</a></div></div></nav></article></main></body></html>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_ddl.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_ddl.html b/docs/build/html/topics/impala_ddl.html
index 29b6efc..852ff0f 100644
--- a/docs/build/html/topics/impala_ddl.html
+++ b/docs/build/html/topics/impala_ddl.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="ddl"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DDL Statements</title></head><body id="ddl"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="ddl"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DDL Statements</title></head><body id="ddl"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">DDL Statements</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_debug_action.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_debug_action.html b/docs/build/html/topics/impala_debug_action.html
index 14556e4..0ca9106 100644
--- a/docs/build/html/topics/impala_debug_action.html
+++ b/docs/build/html/topics/impala_debug_action.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="debug_action"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DEBUG_ACTION Query Option</title></head><body id="debug_action"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="debug_action"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DEBUG_ACTION Query Option</title></head><body id="debug_action"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">DEBUG_ACTION Query Option</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_decimal.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_decimal.html b/docs/build/html/topics/impala_decimal.html
index 8614781..ed7e5c0 100644
--- a/docs/build/html/topics/impala_decimal.html
+++ b/docs/build/html/topics/impala_decimal.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="decimal"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DECIMAL Data Type (Impala 1.4 or higher only)</title></head><body id="decimal"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="decimal"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DECIMAL Data Type (Impala 1.4 or higher only)</title></head><body id="decimal"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">DECIMAL Data Type (<span class="keyword">Impala 1.4</span> or higher only)</h1>
@@ -160,11 +160,13 @@
</p>
<p class="p">
- <span class="ph">Casting an integer or floating-point value <code class="ph codeph">N</code> to
+ <span class="ph">
+ Casting an integer or floating-point value <code class="ph codeph">N</code> to
<code class="ph codeph">TIMESTAMP</code> produces a value that is <code class="ph codeph">N</code> seconds past the start of the epoch
date (January 1, 1970). By default, the result value represents a date and time in the UTC time zone.
- If the setting <code class="ph codeph">-use_local_tz_for_unix_timestamp_conversions=true</code> is in effect,
- the resulting <code class="ph codeph">TIMESTAMP</code> represents a date and time in the local time zone.</span>
+ If the setting <code class="ph codeph">--use_local_tz_for_unix_timestamp_conversions=true</code> is in effect,
+ the resulting <code class="ph codeph">TIMESTAMP</code> represents a date and time in the local time zone.
+ </span>
</p>
<p class="p">
@@ -807,7 +809,7 @@ SELECT CAST(1000.5 AS DECIMAL);
<strong class="ph b">Kudu considerations:</strong>
</p>
<p class="p">
- Currently, the data types <code class="ph codeph">DECIMAL</code>, <code class="ph codeph">CHAR</code>, <code class="ph codeph">VARCHAR</code>,
+ Currently, the data types <code class="ph codeph">CHAR</code>, <code class="ph codeph">VARCHAR</code>,
<code class="ph codeph">ARRAY</code>, <code class="ph codeph">MAP</code>, and <code class="ph codeph">STRUCT</code> cannot be used with Kudu tables.
</p>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_decimal_v2.html
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diff --git a/docs/build/html/topics/impala_decimal_v2.html b/docs/build/html/topics/impala_decimal_v2.html
index 70f70c7..4342a1b 100644
--- a/docs/build/html/topics/impala_decimal_v2.html
+++ b/docs/build/html/topics/impala_decimal_v2.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="decimal_v2"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DECIMAL_V2 Query Option</title></head><body id="decimal_v2"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="decimal_v2"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DECIMAL_V2 Query Option</title></head><body id="decimal_v2"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">DECIMAL_V2 Query Option</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_default_join_distribution_mode.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_default_join_distribution_mode.html b/docs/build/html/topics/impala_default_join_distribution_mode.html
index 4bc4477..0a86577 100644
--- a/docs/build/html/topics/impala_default_join_distribution_mode.html
+++ b/docs/build/html/topics/impala_default_join_distribution_mode.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="default_join_distribution_mode"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DEFAULT_JOIN_DISTRIBUTION_MODE Query Option</title></head><body id="default_join_distribution_mode"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="default_join_distribution_mode"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DEFAULT_JOIN_DISTRIBUTION_MODE Query Option</title></head><body id="default_join_distribution_mode"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">DEFAULT_JOIN_DISTRIBUTION_MODE Query Option</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_default_order_by_limit.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_default_order_by_limit.html b/docs/build/html/topics/impala_default_order_by_limit.html
index 2002724..20e8ea4 100644
--- a/docs/build/html/topics/impala_default_order_by_limit.html
+++ b/docs/build/html/topics/impala_default_order_by_limit.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="default_order_by_limit"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DEFAULT_ORDER_BY_LIMIT Query Option</title></head><body id="default_order_by_limit"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="default_order_by_limit"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DEFAULT_ORDER_BY_LIMIT Query Option</title></head><body id="default_order_by_limit"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">DEFAULT_ORDER_BY_LIMIT Query Option</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_default_spillable_buffer_size.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_default_spillable_buffer_size.html b/docs/build/html/topics/impala_default_spillable_buffer_size.html
index 031a534..0524d13 100644
--- a/docs/build/html/topics/impala_default_spillable_buffer_size.html
+++ b/docs/build/html/topics/impala_default_spillable_buffer_size.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="default_spillable_buffer_size"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DEFAULT_SPILLABLE_BUFFER_SIZE Query Option</title></head><body id="default_spillable_buffer_size"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="default_spillable_buffer_size"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DEFAULT_SPILLABLE_BUFFER_SIZE Query Option</title></head><body id="default_spillable_buffer_size"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">DEFAULT_SPILLABLE_BUFFER_SIZE Query Option</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_delegation.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_delegation.html b/docs/build/html/topics/impala_delegation.html
index d4d9dc1..70c252c 100644
--- a/docs/build/html/topics/impala_delegation.html
+++ b/docs/build/html/topics/impala_delegation.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_authentication.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="delegation"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Configuring Impala Delegation for Hue and BI Tools</title></head><body id="delegation"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_authentication.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="delegation"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Configuring Impala Delegation for Hue and BI Tools</title></head><body id="delegation"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Configuring Impala Delegation for Hue and BI Tools</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_delete.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_delete.html b/docs/build/html/topics/impala_delete.html
index c0bdeea..00a47d8 100644
--- a/docs/build/html/topics/impala_delete.html
+++ b/docs/build/html/topics/impala_delete.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="delete"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DELETE Statement (Impala 2.8 or higher only)</title></head><body id="delete"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="delete"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DELETE Statement (Impala 2.8 or higher only)</title></head><body id="delete"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">DELETE Statement (<span class="keyword">Impala 2.8</span> or higher only)</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_describe.html
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diff --git a/docs/build/html/topics/impala_describe.html b/docs/build/html/topics/impala_describe.html
index 519173a..6055834 100644
--- a/docs/build/html/topics/impala_describe.html
+++ b/docs/build/html/topics/impala_describe.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="describe"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DESCRIBE Statement</title></head><body id="describe"><main role="main"><article role="article" aria-labelledby="describe__desc">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="describe"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DESCRIBE Statement</title></head><body id="describe"><main role="main"><article role="article" aria-labelledby="describe__desc">
<h1 class="title topictitle1" id="describe__desc">DESCRIBE Statement</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_development.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_development.html b/docs/build/html/topics/impala_development.html
index e183652..a7d312a 100644
--- a/docs/build/html/topics/impala_development.html
+++ b/docs/build/html/topics/impala_development.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_concepts.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="intro_dev"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Developing Impala Applications</title></head><body id="intro_dev"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_concepts.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="intro_dev"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Developing Impala Applications</title></head><body id="intro_dev"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Developing Impala Applications</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_disable_codegen.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_disable_codegen.html b/docs/build/html/topics/impala_disable_codegen.html
index daf39cd..2e11519 100644
--- a/docs/build/html/topics/impala_disable_codegen.html
+++ b/docs/build/html/topics/impala_disable_codegen.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="disable_codegen"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DISABLE_CODEGEN Query Option</title></head><body id="disable_codegen"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="disable_codegen"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DISABLE_CODEGEN Query Option</title></head><body id="disable_codegen"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">DISABLE_CODEGEN Query Option</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_disable_row_runtime_filtering.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_disable_row_runtime_filtering.html b/docs/build/html/topics/impala_disable_row_runtime_filtering.html
index dc66ad6..be234e9 100644
--- a/docs/build/html/topics/impala_disable_row_runtime_filtering.html
+++ b/docs/build/html/topics/impala_disable_row_runtime_filtering.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="disable_row_runtime_filtering"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DISABLE_ROW_RUNTIME_FILTERING Query Option (Impala 2.5 or higher only)</title></head><body id="disable_row_runtime_filtering"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="disable_row_runtime_filtering"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DISABLE_ROW_RUNTIME_FILTERING Query Option (Impala 2.5 or higher only)</title></head><body id="disable_row_runtime_filtering"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">DISABLE_ROW_RUNTIME_FILTERING Query Option (<span class="keyword">Impala 2.5</span> or higher only)</h1>
[02/15] impala git commit: [DOCS] Add Impala docs from branch 2.x
Posted by mi...@apache.org.
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_smallint.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_smallint.html b/docs/build/html/topics/impala_smallint.html
index 2f6fd51..98e2f18 100644
--- a/docs/build/html/topics/impala_smallint.html
+++ b/docs/build/html/topics/impala_smallint.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="smallint"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>SMALLINT Data Type</title></head><body id="smallint"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="smallint"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>SMALLINT Data Type</title></head><body id="smallint"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">SMALLINT Data Type</h1>
@@ -31,11 +31,13 @@
<code class="ph codeph">BIGINT</code>) or a floating-point type (<code class="ph codeph">FLOAT</code> or <code class="ph codeph">DOUBLE</code>)
automatically. Use <code class="ph codeph">CAST()</code> to convert to <code class="ph codeph">TINYINT</code>, <code class="ph codeph">STRING</code>,
or <code class="ph codeph">TIMESTAMP</code>.
- <span class="ph">Casting an integer or floating-point value <code class="ph codeph">N</code> to
+ <span class="ph">
+ Casting an integer or floating-point value <code class="ph codeph">N</code> to
<code class="ph codeph">TIMESTAMP</code> produces a value that is <code class="ph codeph">N</code> seconds past the start of the epoch
date (January 1, 1970). By default, the result value represents a date and time in the UTC time zone.
- If the setting <code class="ph codeph">-use_local_tz_for_unix_timestamp_conversions=true</code> is in effect,
- the resulting <code class="ph codeph">TIMESTAMP</code> represents a date and time in the local time zone.</span>
+ If the setting <code class="ph codeph">--use_local_tz_for_unix_timestamp_conversions=true</code> is in effect,
+ the resulting <code class="ph codeph">TIMESTAMP</code> represents a date and time in the local time zone.
+ </span>
</p>
<p class="p">
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_ssl.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_ssl.html b/docs/build/html/topics/impala_ssl.html
index 1147e3d..33bdfa1 100644
--- a/docs/build/html/topics/impala_ssl.html
+++ b/docs/build/html/topics/impala_ssl.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_security.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="ssl"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Configuring TLS/SSL for Impala</title></head><body id="ssl"><main role="main"><article role="article" aria-labelledby="ssl__tls">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_security.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="ssl"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Configuring TLS/SSL for Impala</title></head><body id="ssl"><main role="main"><article role="article" aria-labelledby="ssl__tls">
<h1 class="title topictitle1" id="ssl__tls">Configuring TLS/SSL for Impala</h1>
@@ -155,16 +155,6 @@
</p>
</li>
</ul>
- <div class="note note note_note"><span class="note__title notetitle">Note:</span>
- <p class="p">
- As of <span class="keyword">Impala 2.10</span>, TLSv1.2 may not work for Impala on RHEL 6
- or CentOS 6, even if OpenSSL 1.0.1 is available. The daemons fail to start, with a
- socket error stating the TLS version is not supported. The underlying cause is related to
- <a class="xref" href="https://bugzilla.redhat.com/show_bug.cgi?id=1497859" target="_blank">Red Hat issue 1497859</a>.
- The issue applies if you build on a RHEL 6 or CentOS 6 system with OpenSSL 1.0.0, and
- run on a RHEL 6 or CentOS 6 system with OpenSSL 1.0.1.
- </p>
- </div>
<p class="p">
Along with specifying the version, you can also specify the allowed set of TLS ciphers
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_stddev.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_stddev.html b/docs/build/html/topics/impala_stddev.html
index 6f7eadc..9182649 100644
--- a/docs/build/html/topics/impala_stddev.html
+++ b/docs/build/html/topics/impala_stddev.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_aggregate_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="stddev"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>STDDEV, STDDEV_SAMP, STDDEV_POP Functions</title></head><body id="stddev"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_aggregate_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="stddev"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>STDDEV, STDDEV_SAMP, STDDEV_POP Functions</title></head><body id="stddev"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">STDDEV, STDDEV_SAMP, STDDEV_POP Functions</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_string.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_string.html b/docs/build/html/topics/impala_string.html
index e591cc6..939a32a 100644
--- a/docs/build/html/topics/impala_string.html
+++ b/docs/build/html/topics/impala_string.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="string"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>STRING Data Type</title></head><body id="string"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="string"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>STRING Data Type</title></head><body id="string"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">STRING Data Type</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_string_functions.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_string_functions.html b/docs/build/html/topics/impala_string_functions.html
index aaf1dee..11638e5 100644
--- a/docs/build/html/topics/impala_string_functions.html
+++ b/docs/build/html/topics/impala_string_functions.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="string_functions"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala String Functions</title></head><body id="string_functions"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="string_functions"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala String Functions</title></head><body id="string_functions"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Impala String Functions</h1>
@@ -428,7 +428,7 @@ select concat('[',btrim('xyhelxyzlozyzzxx','xyz'),']');
argument and the presence of trailing spaces for <code class="ph codeph">CHAR</code>
values. The <code class="ph codeph">S</code> and <code class="ph codeph">C</code> values are
displayed with enclosing quotation marks to show any trailing spaces.
-<pre class="pre codeblock" id="string_functions__d6e2549"><code>create table length_demo (s string, c char(5));
+<pre class="pre codeblock" id="string_functions__d6e2588"><code>create table length_demo (s string, c char(5));
insert into length_demo values
('a',cast('a' as char(5))),
('abc',cast('abc' as char(5))),
@@ -795,6 +795,14 @@ select instr('foo bar bletch', 'b', 1, null);
+ <dt class="dt dlterm" id="string_functions__left">
+ <code class="ph codeph">left(string a, int num_chars)</code>
+ </dt>
+ <dd class="dd">
+ See the <code class="ph codeph">strleft</code> function.
+ </dd>
+
+
<dt class="dt dlterm" id="string_functions__length">
@@ -836,7 +844,7 @@ select instr('foo bar bletch', 'b', 1, null);
argument and the presence of trailing spaces for <code class="ph codeph">CHAR</code>
values. The <code class="ph codeph">S</code> and <code class="ph codeph">C</code> values are
displayed with enclosing quotation marks to show any trailing spaces.
-<pre class="pre codeblock" id="string_functions__d6e2549"><code>create table length_demo (s string, c char(5));
+<pre class="pre codeblock" id="string_functions__d6e2588"><code>create table length_demo (s string, c char(5));
insert into length_demo values
('a',cast('a' as char(5))),
('abc',cast('abc' as char(5))),
@@ -924,12 +932,14 @@ from length_demo;
<dt class="dt dlterm" id="string_functions__ltrim">
- <code class="ph codeph">ltrim(string a)</code>
+ <code class="ph codeph">ltrim(string a [, string chars_to_trim])</code>
</dt>
<dd class="dd">
- <strong class="ph b">Purpose:</strong> Returns the argument string with any leading spaces removed from the left side.
+ <strong class="ph b">Purpose:</strong> Returns the argument string with all occurrences
+ of characters specified by the second argument removed from
+ the left side. Removes spaces if the second argument is not specified.
<p class="p">
<strong class="ph b">Return type:</strong> <code class="ph codeph">string</code>
</p>
@@ -967,6 +977,73 @@ from length_demo;
+ <dt class="dt dlterm" id="string_functions__regexp_escape">
+ <code class="ph codeph">regexp_escape(string source)</code>
+ </dt>
+
+ <dd class="dd">
+ <strong class="ph b">Purpose:</strong> The <code class="ph codeph">regexp_escape</code> function returns
+ a string escaped for the special character in RE2 library so that the
+ special characters are interpreted literally rather than as special
+ characters. The following special characters are escaped by the
+ function:
+<pre class="pre codeblock"><code>.\+*?[^]$(){}=!<>|:-</code></pre>
+
+ <p class="p">
+ <strong class="ph b">Return type:</strong>
+ <code class="ph codeph">string</code>
+ </p>
+
+ <p class="p">
+ In Impala 2.0 and later, the Impala regular expression syntax conforms to the POSIX Extended Regular
+ Expression syntax used by the Google RE2 library. For details, see
+ <a class="xref" href="https://code.google.com/p/re2/" target="_blank">the RE2 documentation</a>. It
+ has most idioms familiar from regular expressions in Perl, Python, and so on, including
+ <code class="ph codeph">.*?</code> for non-greedy matches.
+ </p>
+ <p class="p">
+ In Impala 2.0 and later, a change in the underlying regular expression library could cause changes in the
+ way regular expressions are interpreted by this function. Test any queries that use regular expressions and
+ adjust the expression patterns if necessary. See
+ <a class="xref" href="../shared/../topics/impala_incompatible_changes.html#incompatible_changes_200">Incompatible Changes Introduced in Impala 2.0.0</a> for details.
+ </p>
+ <p class="p">
+ Because the <span class="keyword cmdname">impala-shell</span> interpreter uses the <code class="ph codeph">\</code> character for escaping,
+ use <code class="ph codeph">\\</code> to represent the regular expression escape character in any regular expressions
+ that you submit through <span class="keyword cmdname">impala-shell</span> . You might prefer to use the equivalent character
+ class names, such as <code class="ph codeph">[[:digit:]]</code> instead of <code class="ph codeph">\d</code> which you would have to
+ escape as <code class="ph codeph">\\d</code>.
+ </p>
+ <p class="p">
+ <strong class="ph b">Examples:</strong>
+ </p>
+ <p class="p">
+ This example shows escaping one of special characters in RE2.
+ </p>
+<pre class="pre codeblock"><code>
++------------------------------------------------------+
+| regexp_escape('Hello.world') |
++------------------------------------------------------+
+| Hello\.world |
++------------------------------------------------------+
+</code></pre>
+ <p class="p">
+ This example shows escaping all the special characters in RE2.
+ </p>
+<pre class="pre codeblock"><code>
++------------------------------------------------------------+
+| regexp_escape('a.b\\c+d*e?f[g]h$i(j)k{l}m=n!o<p>q|r:s-t') |
++------------------------------------------------------------+
+| a\.b\\c\+d\*e\?f\[g\]h\$i\(j\)k\{l\}m\=n\!o\<p\>q\|r\:s\-t |
++------------------------------------------------------------+
+
+</code></pre>
+ </dd>
+
+
+
+
+
<dt class="dt dlterm" id="string_functions__regexp_extract">
<code class="ph codeph">regexp_extract(string subject, string pattern, int index)</code>
</dt>
@@ -1349,6 +1426,14 @@ select replace('hello world','xyz','abc');
+ <dt class="dt dlterm" id="string_functions__right">
+ <code class="ph codeph">right(string a, int num_chars)</code>
+ </dt>
+ <dd class="dd">
+ See the <code class="ph codeph">strright</code> function.
+ </dd>
+
+
<dt class="dt dlterm" id="string_functions__rpad">
@@ -1370,12 +1455,14 @@ select replace('hello world','xyz','abc');
<dt class="dt dlterm" id="string_functions__rtrim">
- <code class="ph codeph">rtrim(string a)</code>
+ <code class="ph codeph">rtrim(string a [, string chars_to_trim])</code>
</dt>
<dd class="dd">
- <strong class="ph b">Purpose:</strong> Returns the argument string with any trailing spaces removed from the right side.
+ <strong class="ph b">Purpose:</strong> Returns the argument string with all occurrences
+ of characters specified by the second argument removed from
+ the right side. Removes spaces if the second argument is not specified.
<p class="p">
<strong class="ph b">Return type:</strong> <code class="ph codeph">string</code>
</p>
@@ -1408,11 +1495,10 @@ select replace('hello world','xyz','abc');
<dd class="dd">
- <strong class="ph b">Purpose:</strong> Returns the nth field within a delimited string.
- The fields are numbered starting from 1.
- The delimiter can consist of multiple characters, not just a
- single character. All matching of the delimiter is done exactly, not using any
- regular expression patterns.
+ <strong class="ph b">Purpose:</strong> Returns the nth field within a delimited string. The
+ fields are numbered starting from 1. The delimiter can consist of
+ multiple characters, not just a single character. All matching of the
+ delimiter is done exactly, not using any regular expression patterns.
<p class="p">
<strong class="ph b">Return type:</strong> <code class="ph codeph">string</code>
</p>
@@ -1440,7 +1526,8 @@ select replace('hello world','xyz','abc');
<strong class="ph b">Examples:</strong>
</p>
<p class="p">
- These examples show how to retrieve the nth field from a delimited string:
+ These examples show how to retrieve the nth field from a delimited
+ string:
</p>
<pre class="pre codeblock"><code>
select split_part('x,y,z',',',1);
@@ -1463,15 +1550,15 @@ select split_part('x,y,z',',',3);
+-----------------------------+
| z |
+-----------------------------+
-</codeblock>
- <p>
+</code></pre>
+ <p class="p">
These examples show what happens for out-of-range field positions.
Specifying a value less than 1 produces an error. Specifying a value
greater than the number of fields returns a zero-length string
- (which is not the same as <codeph>NULL</codeph>).
- </p>
-<codeblock><![CDATA[
+ (which is not the same as <code class="ph codeph">NULL</code>).
+ </p>
+<pre class="pre codeblock"><code>
select split_part('x,y,z',',',0);
ERROR: Invalid field position: 0
@@ -1486,12 +1573,12 @@ from t1
+-------------------+-------------------------------------+---------------------------+
| | [] | 0 |
+-------------------+-------------------------------------+---------------------------+
-</codeblock>
- <p>
+</code></pre>
+ <p class="p">
These examples show how the delimiter can be a multi-character value:
- </p>
-<codeblock><![CDATA[
+ </p>
+<pre class="pre codeblock"><code>
select split_part('one***two***three','***',2);
+-------------------------------------------+
| split_part('one***two***three', '***', 2) |
@@ -1524,8 +1611,8 @@ select split_part('one\|/two\|/three','\|/',3);
<p class="p">
<strong class="ph b">Return type:</strong> <code class="ph codeph">string</code>
</p>
- </dd>
+ </dd>
@@ -1629,4 +1716,4 @@ select split_part('one\|/two\|/three','\|/',3);
</dl>
</div>
-<nav role="navigation" class="related-links"><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_functions.html">Impala Built-In Functions</a></div></div></nav></article></main></body></html>
\ No newline at end of file
+<nav role="navigation" class="related-links"><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_functions.html">Impala Built-In Functions</a></div></div></nav></article></main></body></html>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_struct.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_struct.html b/docs/build/html/topics/impala_struct.html
index b247e6d..fb3b343 100644
--- a/docs/build/html/topics/impala_struct.html
+++ b/docs/build/html/topics/impala_struct.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="struct"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>STRUCT Complex Type (Impala 2.3 or higher only)</title></head><body id="struct"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="struct"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>STRUCT Complex Type (Impala 2.3 or higher only)</title></head><body id="struct"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">STRUCT Complex Type (<span class="keyword">Impala 2.3</span> or higher only)</h1>
@@ -130,7 +130,7 @@ type ::= <var class="keyword varname">primitive_type</var> | <var class="keyword
</p>
</li>
<li class="li">
- <p class="p" id="struct__d6e3207">
+ <p class="p" id="struct__d6e3246">
The maximum length of the column definition for any complex type, including declarations for any nested types,
is 4000 characters.
</p>
@@ -147,7 +147,7 @@ type ::= <var class="keyword varname">primitive_type</var> | <var class="keyword
<strong class="ph b">Kudu considerations:</strong>
</p>
<p class="p">
- Currently, the data types <code class="ph codeph">DECIMAL</code>, <code class="ph codeph">CHAR</code>, <code class="ph codeph">VARCHAR</code>,
+ Currently, the data types <code class="ph codeph">CHAR</code>, <code class="ph codeph">VARCHAR</code>,
<code class="ph codeph">ARRAY</code>, <code class="ph codeph">MAP</code>, and <code class="ph codeph">STRUCT</code> cannot be used with Kudu tables.
</p>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_subqueries.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_subqueries.html b/docs/build/html/topics/impala_subqueries.html
index 0ec8a7e..a82e520 100644
--- a/docs/build/html/topics/impala_subqueries.html
+++ b/docs/build/html/topics/impala_subqueries.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_select.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="subqueries"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Subqueries in Impala SELECT Statements</title></head><body id="subqueries"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_select.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="subqueries"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Subqueries in Impala SELECT Statements</title></head><body id="subqueries"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Subqueries in Impala SELECT Statements</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_sum.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_sum.html b/docs/build/html/topics/impala_sum.html
index d898911..703ead1 100644
--- a/docs/build/html/topics/impala_sum.html
+++ b/docs/build/html/topics/impala_sum.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_aggregate_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="sum"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>SUM Function</title></head><body id="sum"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_aggregate_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="sum"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>SUM Function</title></head><body id="sum"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">SUM Function</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_support_start_over.html
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diff --git a/docs/build/html/topics/impala_support_start_over.html b/docs/build/html/topics/impala_support_start_over.html
index 8e14652..6868b58 100644
--- a/docs/build/html/topics/impala_support_start_over.html
+++ b/docs/build/html/topics/impala_support_start_over.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="support_start_over"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>SUPPORT_START_OVER Query Option</title></head><body id="support_start_over"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="support_start_over"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>SUPPORT_START_OVER Query Option</title></head><body id="support_start_over"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">SUPPORT_START_OVER Query Option</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_sync_ddl.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_sync_ddl.html b/docs/build/html/topics/impala_sync_ddl.html
index eb8c037..ba94f9e 100644
--- a/docs/build/html/topics/impala_sync_ddl.html
+++ b/docs/build/html/topics/impala_sync_ddl.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="sync_ddl"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>SYNC_DDL Query Option</title></head><body id="sync_ddl"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="sync_ddl"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>SYNC_DDL Query Option</title></head><body id="sync_ddl"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">SYNC_DDL Query Option</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_tables.html
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diff --git a/docs/build/html/topics/impala_tables.html b/docs/build/html/topics/impala_tables.html
index a1c9508..a8d3d3f 100644
--- a/docs/build/html/topics/impala_tables.html
+++ b/docs/build/html/topics/impala_tables.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_schema_objects.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="tables"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Overview of Impala Tables</title></head><body id="tables"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_schema_objects.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="tables"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Overview of Impala Tables</title></head><body id="tables"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Overview of Impala Tables</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_tablesample.html
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diff --git a/docs/build/html/topics/impala_tablesample.html b/docs/build/html/topics/impala_tablesample.html
index ddf9ce9..b2bdc5d 100644
--- a/docs/build/html/topics/impala_tablesample.html
+++ b/docs/build/html/topics/impala_tablesample.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_select.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="tablesample"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>TABLESAMPLE Clause</title></head><body id="tablesample"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_select.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="tablesample"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>TABLESAMPLE Clause</title></head><body id="tablesample"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">TABLESAMPLE Clause</h1>
@@ -60,6 +60,12 @@
</p>
<p class="p">
+ See <a href="impala_compute_stats.html"><span class="keyword">COMPUTE STATS Statement</span></a> for the
+ <code class="ph codeph">TABLESAMPLE</code> clause used in the <code class="ph codeph">COMPUTE
+ STATS</code> statement.
+ </p>
+
+ <p class="p">
<strong class="ph b">Usage notes:</strong>
</p>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_timeouts.html
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diff --git a/docs/build/html/topics/impala_timeouts.html b/docs/build/html/topics/impala_timeouts.html
index 7275367..d3a6b2b 100644
--- a/docs/build/html/topics/impala_timeouts.html
+++ b/docs/build/html/topics/impala_timeouts.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_admin.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="timeouts"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Setting Timeout Periods for Daemons, Queries, and Sessions</title></head><body id="timeouts"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_admin.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="timeouts"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Setting Timeout Periods for Daemons, Queries, and Sessions</title></head><body id="timeouts"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Setting Timeout Periods for Daemons, Queries, and Sessions</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_timestamp.html
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diff --git a/docs/build/html/topics/impala_timestamp.html b/docs/build/html/topics/impala_timestamp.html
index 1d8bc67..12515ef 100644
--- a/docs/build/html/topics/impala_timestamp.html
+++ b/docs/build/html/topics/impala_timestamp.html
@@ -1,16 +1,18 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
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<h1 class="title topictitle1" id="ariaid-title1">TIMESTAMP Data Type</h1>
+
+
<div class="body conbody">
<p class="p">
- A data type used in <code class="ph codeph">CREATE TABLE</code> and <code class="ph codeph">ALTER TABLE</code> statements, representing a
- point in time.
+ A data type used in <code class="ph codeph">CREATE TABLE</code> and <code class="ph codeph">ALTER TABLE</code>
+ statements, representing a point in time.
</p>
<p class="p">
@@ -24,9 +26,9 @@
<pre class="pre codeblock"><code><var class="keyword varname">column_name</var> TIMESTAMP</code></pre>
<p class="p">
- <strong class="ph b">Range:</strong> Allowed date values range from 1400-01-01 to 9999-12-31; this range is different from the Hive
- <code class="ph codeph">TIMESTAMP</code> type. Internally, the resolution of the time portion of a
- <code class="ph codeph">TIMESTAMP</code> value is in nanoseconds.
+ <strong class="ph b">Range:</strong> Allowed date values range from 1400-01-01 to 9999-12-31; this range is
+ different from the Hive <code class="ph codeph">TIMESTAMP</code> type. Internally, the resolution of the
+ time portion of a <code class="ph codeph">TIMESTAMP</code> value is in nanoseconds.
</p>
<p class="p">
@@ -34,16 +36,18 @@
</p>
<p class="p">
- You can perform date arithmetic by adding or subtracting a specified number of time units, using the
- <code class="ph codeph">INTERVAL</code> keyword and the <code class="ph codeph">+</code> and <code class="ph codeph">-</code> operators or
- <code class="ph codeph">date_add()</code> and <code class="ph codeph">date_sub()</code> functions. You can specify units as
- <code class="ph codeph">YEAR[S]</code>, <code class="ph codeph">MONTH[S]</code>, <code class="ph codeph">WEEK[S]</code>, <code class="ph codeph">DAY[S]</code>,
+ You can perform date arithmetic by adding or subtracting a specified number of time units,
+ using the <code class="ph codeph">INTERVAL</code> keyword and the <code class="ph codeph">+</code> and
+ <code class="ph codeph">-</code> operators or <code class="ph codeph">date_add()</code> and
+ <code class="ph codeph">date_sub()</code> functions. You can specify units as <code class="ph codeph">YEAR[S]</code>,
+ <code class="ph codeph">MONTH[S]</code>, <code class="ph codeph">WEEK[S]</code>, <code class="ph codeph">DAY[S]</code>,
<code class="ph codeph">HOUR[S]</code>, <code class="ph codeph">MINUTE[S]</code>, <code class="ph codeph">SECOND[S]</code>,
- <code class="ph codeph">MILLISECOND[S]</code>, <code class="ph codeph">MICROSECOND[S]</code>, and <code class="ph codeph">NANOSECOND[S]</code>. You can
- only specify one time unit in each interval expression, for example <code class="ph codeph">INTERVAL 3 DAYS</code> or
- <code class="ph codeph">INTERVAL 25 HOURS</code>, but you can produce any granularity by adding together successive
- <code class="ph codeph">INTERVAL</code> values, such as <code class="ph codeph"><var class="keyword varname">timestamp_value</var> + INTERVAL 3 WEEKS -
- INTERVAL 1 DAY + INTERVAL 10 MICROSECONDS</code>.
+ <code class="ph codeph">MILLISECOND[S]</code>, <code class="ph codeph">MICROSECOND[S]</code>, and
+ <code class="ph codeph">NANOSECOND[S]</code>. You can only specify one time unit in each interval
+ expression, for example <code class="ph codeph">INTERVAL 3 DAYS</code> or <code class="ph codeph">INTERVAL 25
+ HOURS</code>, but you can produce any granularity by adding together successive
+ <code class="ph codeph">INTERVAL</code> values, such as <code class="ph codeph"><var class="keyword varname">timestamp_value</var> +
+ INTERVAL 3 WEEKS - INTERVAL 1 DAY + INTERVAL 10 MICROSECONDS</code>.
</p>
<p class="p">
@@ -61,34 +65,39 @@ insert into auction_details
</p>
<p class="p">
- By default, Impala does not store timestamps using the local timezone, to avoid undesired results from
- unexpected time zone issues. Timestamps are stored and interpreted relative to UTC, both when written to or
- read from data files, or when converted to or from Unix time values through functions such as
- <code class="ph codeph">from_unixtime()</code> or <code class="ph codeph">unix_timestamp()</code>. To convert such a
- <code class="ph codeph">TIMESTAMP</code> value to one that represents the date and time in a specific time zone, convert
- the original value with the <code class="ph codeph">from_utc_timestamp()</code> function.
+ By default, Impala does not store timestamps using the local timezone, to avoid undesired
+ results from unexpected time zone issues. Timestamps are stored and interpreted relative
+ to UTC, both when written to or read from data files, or when converted to or from Unix
+ time values through functions such as <code class="ph codeph">from_unixtime()</code> or
+ <code class="ph codeph">unix_timestamp()</code>. To convert such a <code class="ph codeph">TIMESTAMP</code> value to
+ one that represents the date and time in a specific time zone, convert the original value
+ with the <code class="ph codeph">from_utc_timestamp()</code> function.
</p>
<p class="p">
- Because Impala does not assume that <code class="ph codeph">TIMESTAMP</code> values are in any particular time zone, you
- must be conscious of the time zone aspects of data that you query, insert, or convert.
+ Because Impala does not assume that <code class="ph codeph">TIMESTAMP</code> values are in any
+ particular time zone, you must be conscious of the time zone aspects of data that you
+ query, insert, or convert.
</p>
<p class="p">
- For consistency with Unix system calls, the <code class="ph codeph">TIMESTAMP</code> returned by the <code class="ph codeph">now()</code>
- function represents the local time in the system time zone, rather than in UTC. To store values relative to
- the current time in a portable way, convert any <code class="ph codeph">now()</code> return values using the
- <code class="ph codeph">to_utc_timestamp()</code> function first. For example, the following example shows that the current
- time in California (where this Impala cluster is located) is shortly after 2 PM. If that value was written to a data
- file, and shipped off to a distant server to be analyzed alongside other data from far-flung locations, the
- dates and times would not match up precisely because of time zone differences. Therefore, the
- <code class="ph codeph">to_utc_timestamp()</code> function converts it using a common reference point, the UTC time zone
- (descended from the old Greenwich Mean Time standard). The <code class="ph codeph">'PDT'</code> argument indicates that the
- original value is from the Pacific time zone with Daylight Saving Time in effect. When servers in all
- geographic locations run the same transformation on any local date and time values (with the appropriate time
- zone argument), the stored data uses a consistent representation. Impala queries can use functions such as
- <code class="ph codeph">EXTRACT()</code>, <code class="ph codeph">MIN()</code>, <code class="ph codeph">AVG()</code>, and so on to do time-series
- analysis on those timestamps.
+ For consistency with Unix system calls, the <code class="ph codeph">TIMESTAMP</code> returned by the
+ <code class="ph codeph">now()</code> function represents the local time in the system time zone, rather
+ than in UTC. To store values relative to the current time in a portable way, convert any
+ <code class="ph codeph">now()</code> return values using the <code class="ph codeph">to_utc_timestamp()</code>
+ function first. For example, the following example shows that the current time in
+ California (where this Impala cluster is located) is shortly after 2 PM. If that value was
+ written to a data file, and shipped off to a distant server to be analyzed alongside other
+ data from far-flung locations, the dates and times would not match up precisely because of
+ time zone differences. Therefore, the <code class="ph codeph">to_utc_timestamp()</code> function
+ converts it using a common reference point, the UTC time zone (descended from the old
+ Greenwich Mean Time standard). The <code class="ph codeph">'PDT'</code> argument indicates that the
+ original value is from the Pacific time zone with Daylight Saving Time in effect. When
+ servers in all geographic locations run the same transformation on any local date and time
+ values (with the appropriate time zone argument), the stored data uses a consistent
+ representation. Impala queries can use functions such as <code class="ph codeph">EXTRACT()</code>,
+ <code class="ph codeph">MIN()</code>, <code class="ph codeph">AVG()</code>, and so on to do time-series analysis on
+ those timestamps.
</p>
<pre class="pre codeblock"><code>[localhost:21000] > select now();
@@ -106,12 +115,14 @@ insert into auction_details
</code></pre>
<p class="p">
- The converse function, <code class="ph codeph">from_utc_timestamp()</code>, lets you take stored <code class="ph codeph">TIMESTAMP</code>
- data or calculated results and convert back to local date and time for processing on the application side.
- The following example shows how you might represent some future date (such as the ending date and time of an
- auction) in UTC, and then convert back to local time when convenient for reporting or other processing. The
- final query in the example tests whether this arbitrary UTC date and time has passed yet, by converting it
- back to the local time zone and comparing it against the current date and time.
+ The converse function, <code class="ph codeph">from_utc_timestamp()</code>, lets you take stored
+ <code class="ph codeph">TIMESTAMP</code> data or calculated results and convert back to local date and
+ time for processing on the application side. The following example shows how you might
+ represent some future date (such as the ending date and time of an auction) in UTC, and
+ then convert back to local time when convenient for reporting or other processing. The
+ final query in the example tests whether this arbitrary UTC date and time has passed yet,
+ by converting it back to the local time zone and comparing it against the current date and
+ time.
</p>
<pre class="pre codeblock"><code>[localhost:21000] > select to_utc_timestamp(now() + interval 2 weeks, 'PDT');
@@ -135,35 +146,41 @@ insert into auction_details
</code></pre>
<p class="p">
- If you have data files written by Hive, those <code class="ph codeph">TIMESTAMP</code> values represent the local timezone
- of the host where the data was written, potentially leading to inconsistent results when processed by Impala.
- To avoid compatibility problems or having to code workarounds, you can specify one or both of these
- <span class="keyword cmdname">impalad</span> startup flags: <code class="ph codeph">-use_local_tz_for_unix_timestamp_conversions=true</code>
+ If you have data files written by Hive, those <code class="ph codeph">TIMESTAMP</code> values represent
+ the local timezone of the host where the data was written, potentially leading to
+ inconsistent results when processed by Impala. To avoid compatibility problems or having
+ to code workarounds, you can specify one or both of these <span class="keyword cmdname">impalad</span>
+ startup flags: <code class="ph codeph">--use_local_tz_for_unix_timestamp_conversions=true</code>
<code class="ph codeph">-convert_legacy_hive_parquet_utc_timestamps=true</code>. Although
- <code class="ph codeph">-convert_legacy_hive_parquet_utc_timestamps</code> is turned off by default to avoid performance overhead, where practical
- turn it on when processing <code class="ph codeph">TIMESTAMP</code> columns in Parquet files written by Hive, to avoid unexpected behavior.
+ <code class="ph codeph">-convert_legacy_hive_parquet_utc_timestamps</code> is turned off by default to
+ avoid performance overhead, where practical turn it on when processing
+ <code class="ph codeph">TIMESTAMP</code> columns in Parquet files written by Hive, to avoid unexpected
+ behavior.
</p>
<p class="p">
- The <code class="ph codeph">-use_local_tz_for_unix_timestamp_conversions</code> setting affects conversions from
- <code class="ph codeph">TIMESTAMP</code> to <code class="ph codeph">BIGINT</code>, or from <code class="ph codeph">BIGINT</code>
- to <code class="ph codeph">TIMESTAMP</code>. By default, Impala treats all <code class="ph codeph">TIMESTAMP</code> values as UTC,
- to simplify analysis of time-series data from different geographic regions. When you enable the
- <code class="ph codeph">-use_local_tz_for_unix_timestamp_conversions</code> setting, these operations
- treat the input values as if they are in the local tie zone of the host doing the processing.
- See <a class="xref" href="impala_datetime_functions.html#datetime_functions">Impala Date and Time Functions</a> for the list of functions
- affected by the <code class="ph codeph">-use_local_tz_for_unix_timestamp_conversions</code> setting.
+ The <code class="ph codeph">--use_local_tz_for_unix_timestamp_conversions</code> setting affects
+ conversions from <code class="ph codeph">TIMESTAMP</code> to <code class="ph codeph">BIGINT</code>, or from
+ <code class="ph codeph">BIGINT</code> to <code class="ph codeph">TIMESTAMP</code>. By default, Impala treats all
+ <code class="ph codeph">TIMESTAMP</code> values as UTC, to simplify analysis of time-series data from
+ different geographic regions. When you enable the
+ <code class="ph codeph">--use_local_tz_for_unix_timestamp_conversions</code> setting, these operations
+ treat the input values as if they are in the local tie zone of the host doing the
+ processing. See <a class="xref" href="impala_datetime_functions.html#datetime_functions">Impala Date and Time Functions</a>
+ for the list of functions affected by the
+ <code class="ph codeph">--use_local_tz_for_unix_timestamp_conversions</code> setting.
</p>
<p class="p">
- The following sequence of examples shows how the interpretation of <code class="ph codeph">TIMESTAMP</code> values in
- Parquet tables is affected by the setting of the <code class="ph codeph">-convert_legacy_hive_parquet_utc_timestamps</code>
- setting.
+ The following sequence of examples shows how the interpretation of
+ <code class="ph codeph">TIMESTAMP</code> values in Parquet tables is affected by the setting of the
+ <code class="ph codeph">-convert_legacy_hive_parquet_utc_timestamps</code> setting.
</p>
<p class="p">
Regardless of the <code class="ph codeph">-convert_legacy_hive_parquet_utc_timestamps</code> setting,
- <code class="ph codeph">TIMESTAMP</code> columns in text tables can be written and read interchangeably by Impala and Hive:
+ <code class="ph codeph">TIMESTAMP</code> columns in text tables can be written and read interchangeably
+ by Impala and Hive:
</p>
<pre class="pre codeblock"><code>Impala DDL and queries for text table:
@@ -195,11 +212,12 @@ Time taken: 1.245 seconds, Fetched: 2 row(s)
</code></pre>
<p class="p">
- When the table uses Parquet format, Impala expects any time zone adjustment to be applied prior to writing,
- while <code class="ph codeph">TIMESTAMP</code> values written by Hive are adjusted to be in the UTC time zone. When Hive
- queries Parquet data files that it wrote, it adjusts the <code class="ph codeph">TIMESTAMP</code> values back to the local
- time zone, while Impala does no conversion. Hive does no time zone conversion when it queries Impala-written
- Parquet files.
+ When the table uses Parquet format, Impala expects any time zone adjustment to be applied
+ prior to writing, while <code class="ph codeph">TIMESTAMP</code> values written by Hive are adjusted to
+ be in the UTC time zone. When Hive queries Parquet data files that it wrote, it adjusts
+ the <code class="ph codeph">TIMESTAMP</code> values back to the local time zone, while Impala does no
+ conversion. Hive does no time zone conversion when it queries Impala-written Parquet
+ files.
</p>
<pre class="pre codeblock"><code>Impala DDL and queries for Parquet table:
@@ -239,10 +257,11 @@ Time taken: 0.197 seconds, Fetched: 2 row(s)
</code></pre>
<p class="p">
- The discrepancy arises when Impala queries the Hive-created Parquet table. The underlying values in the
- <code class="ph codeph">TIMESTAMP</code> column are different from the ones written by Impala, even though they were copied
- from one table to another by an <code class="ph codeph">INSERT ... SELECT</code> statement in Hive. Hive did an implicit
- conversion from the local time zone to UTC as it wrote the values to Parquet.
+ The discrepancy arises when Impala queries the Hive-created Parquet table. The underlying
+ values in the <code class="ph codeph">TIMESTAMP</code> column are different from the ones written by
+ Impala, even though they were copied from one table to another by an <code class="ph codeph">INSERT ...
+ SELECT</code> statement in Hive. Hive did an implicit conversion from the local time
+ zone to UTC as it wrote the values to Parquet.
</p>
<pre class="pre codeblock"><code>Impala query for TIMESTAMP values from Impala-written and Hive-written data:
@@ -285,11 +304,12 @@ Fetched 2 row(s) in 0.20s
</code></pre>
<p class="p">
- When the <code class="ph codeph">-convert_legacy_hive_parquet_utc_timestamps</code> setting is enabled, Impala recognizes
- the Parquet data files written by Hive, and applies the same UTC-to-local-timezone conversion logic during
- the query as Hive uses, making the contents of the Impala-written <code class="ph codeph">P1</code> table and the
- Hive-written <code class="ph codeph">H1</code> table appear identical, whether represented as <code class="ph codeph">TIMESTAMP</code>
- values or the underlying <code class="ph codeph">BIGINT</code> integers:
+ When the <code class="ph codeph">-convert_legacy_hive_parquet_utc_timestamps</code> setting is enabled,
+ Impala recognizes the Parquet data files written by Hive, and applies the same
+ UTC-to-local-timezone conversion logic during the query as Hive uses, making the contents
+ of the Impala-written <code class="ph codeph">P1</code> table and the Hive-written <code class="ph codeph">H1</code>
+ table appear identical, whether represented as <code class="ph codeph">TIMESTAMP</code> values or the
+ underlying <code class="ph codeph">BIGINT</code> integers:
</p>
<pre class="pre codeblock"><code>[localhost:21000] > select x from p1;
@@ -331,24 +351,61 @@ Fetched 2 row(s) in 0.22s
</p>
<p class="p">
- Impala automatically converts <code class="ph codeph">STRING</code> literals of the correct format into
- <code class="ph codeph">TIMESTAMP</code> values. Timestamp values are accepted in the format
- <code class="ph codeph">"yyyy-MM-dd HH:mm:ss.SSSSSS"</code>, and can consist of just the date, or just the time, with or
- without the fractional second portion. For example, you can specify <code class="ph codeph">TIMESTAMP</code> values such as
- <code class="ph codeph">'1966-07-30'</code>, <code class="ph codeph">'08:30:00'</code>, or <code class="ph codeph">'1985-09-25 17:45:30.005'</code>.
- <span class="ph">Casting an integer or floating-point value <code class="ph codeph">N</code> to
+ Impala automatically converts <code class="ph codeph">STRING</code> literals of the
+ correct format into <code class="ph codeph">TIMESTAMP</code> values. Timestamp values
+ are accepted in the format <code class="ph codeph">"yyyy-MM-dd HH:mm:ss.SSSSSS"</code>,
+ and can consist of just the date, or just the time, with or without the
+ fractional second portion. For example, you can specify <code class="ph codeph">TIMESTAMP</code>
+ values such as <code class="ph codeph">'1966-07-30'</code>, <code class="ph codeph">'08:30:00'</code>,
+ or <code class="ph codeph">'1985-09-25 17:45:30.005'</code>.
+ </p><p class="p">Leading zeroes are not required in the numbers representing the date
+ component, such as month and date, or the time component, such as
+ hour, minute, and second. For example, Impala accepts both
+ <code class="ph codeph">"2018-1-1 01:02:03"</code> and
+ <code class="ph codeph">"2018-01-01 1:2:3"</code> as valid.</p><div class="p">
+ When you convert or cast a <code class="ph codeph">STRING</code> literal to <code class="ph codeph">TIMESTAMP</code>,
+ you can use the following separators between the date part and the time part:
+ <ul class="ul">
+ <li class="li">
+ <p class="p">
+ One or more space characters
+ </p>
+
+ <p class="p">
+ Example: <code class="ph codeph">CAST ('2001-01-09 01:05:01' AS TIMESTAMP)</code>
+ </p>
+ </li>
+
+ <li class="li">
+ <p class="p">
+ The character “T”
+ </p>
+
+ <p class="p">
+ Example: <code class="ph codeph">CAST ('2001-01-09T01:05:01' AS TIMESTAMP)</code>
+ </p>
+ </li>
+ </ul>
+ </div>
+
+ <p class="p">
+ <span class="ph">
+ Casting an integer or floating-point value <code class="ph codeph">N</code> to
<code class="ph codeph">TIMESTAMP</code> produces a value that is <code class="ph codeph">N</code> seconds past the start of the epoch
date (January 1, 1970). By default, the result value represents a date and time in the UTC time zone.
- If the setting <code class="ph codeph">-use_local_tz_for_unix_timestamp_conversions=true</code> is in effect,
- the resulting <code class="ph codeph">TIMESTAMP</code> represents a date and time in the local time zone.</span>
- </p>
+ If the setting <code class="ph codeph">--use_local_tz_for_unix_timestamp_conversions=true</code> is in effect,
+ the resulting <code class="ph codeph">TIMESTAMP</code> represents a date and time in the local time zone.
+ </span>
+ </p>
<p class="p">
- In Impala 1.3 and higher, the <code class="ph codeph">FROM_UNIXTIME()</code> and <code class="ph codeph">UNIX_TIMESTAMP()</code>
- functions allow a wider range of format strings, with more flexibility in element order, repetition of letter
- placeholders, and separator characters. In <span class="keyword">Impala 2.3</span> and higher, the <code class="ph codeph">UNIX_TIMESTAMP()</code>
- function also allows a numeric timezone offset to be specified as part of the input string.
- See <a class="xref" href="impala_datetime_functions.html#datetime_functions">Impala Date and Time Functions</a> for details.
+ In Impala 1.3 and higher, the <code class="ph codeph">FROM_UNIXTIME()</code> and
+ <code class="ph codeph">UNIX_TIMESTAMP()</code> functions allow a wider range of format strings, with
+ more flexibility in element order, repetition of letter placeholders, and separator
+ characters. In <span class="keyword">Impala 2.3</span> and higher, the
+ <code class="ph codeph">UNIX_TIMESTAMP()</code> function also allows a numeric timezone offset to be
+ specified as part of the input string. See
+ <a class="xref" href="impala_datetime_functions.html#datetime_functions">Impala Date and Time Functions</a> for details.
</p>
<p class="p">
@@ -368,11 +425,12 @@ Fetched 2 row(s) in 0.22s
</p>
<p class="p">
- Although you cannot use a <code class="ph codeph">TIMESTAMP</code> column as a partition key, you can extract the
- individual years, months, days, hours, and so on and partition based on those columns. Because the partition
- key column values are represented in HDFS directory names, rather than as fields in the data files
- themselves, you can also keep the original <code class="ph codeph">TIMESTAMP</code> values if desired, without duplicating
- data or wasting storage space. See <a class="xref" href="impala_partitioning.html#partition_key_columns">Partition Key Columns</a> for more
+ Although you cannot use a <code class="ph codeph">TIMESTAMP</code> column as a partition key, you can
+ extract the individual years, months, days, hours, and so on and partition based on those
+ columns. Because the partition key column values are represented in HDFS directory names,
+ rather than as fields in the data files themselves, you can also keep the original
+ <code class="ph codeph">TIMESTAMP</code> values if desired, without duplicating data or wasting storage
+ space. See <a class="xref" href="impala_partitioning.html#partition_key_columns">Partition Key Columns</a> for more
details on partitioning with date and time values.
</p>
@@ -442,9 +500,10 @@ ERROR: AnalysisException: Type 'TIMESTAMP' is not supported as partition-column
</p>
<p class="p">
- If you cast a <code class="ph codeph">STRING</code> with an unrecognized format to a <code class="ph codeph">TIMESTAMP</code>, the result
- is <code class="ph codeph">NULL</code> rather than an error. Make sure to test your data pipeline to be sure any textual
- date and time values are in a format that Impala <code class="ph codeph">TIMESTAMP</code> can recognize.
+ If you cast a <code class="ph codeph">STRING</code> with an unrecognized format to a
+ <code class="ph codeph">TIMESTAMP</code>, the result is <code class="ph codeph">NULL</code> rather than an error. Make
+ sure to test your data pipeline to be sure any textual date and time values are in a
+ format that Impala <code class="ph codeph">TIMESTAMP</code> can recognize.
</p>
<p class="p">
@@ -458,6 +517,7 @@ ERROR: AnalysisException: Type 'TIMESTAMP' is not supported as partition-column
<p class="p">
<strong class="ph b">Kudu considerations:</strong>
</p>
+
<div class="p">
In <span class="keyword">Impala 2.9</span> and higher, you can include <code class="ph codeph">TIMESTAMP</code>
columns in Kudu tables, instead of representing the date and time as a <code class="ph codeph">BIGINT</code>
@@ -500,8 +560,8 @@ ERROR: AnalysisException: Type 'TIMESTAMP' is not supported as partition-column
</p>
<p class="p">
- The following examples demonstrate using <code class="ph codeph">TIMESTAMP</code> values
- with built-in functions:
+ The following examples demonstrate using <code class="ph codeph">TIMESTAMP</code> values with built-in
+ functions:
</p>
<pre class="pre codeblock"><code>select cast('1966-07-30' as timestamp);
@@ -519,8 +579,8 @@ select now(); -- Returns current date and time in
</code></pre>
<p class="p">
- The following examples demonstrate using <code class="ph codeph">TIMESTAMP</code> values
- with HDFS-backed tables:
+ The following examples demonstrate using <code class="ph codeph">TIMESTAMP</code> values with
+ HDFS-backed tables:
</p>
<pre class="pre codeblock"><code>create table dates_and_times (t timestamp);
@@ -529,8 +589,8 @@ insert into dates_and_times values
</code></pre>
<p class="p">
- The following examples demonstrate using <code class="ph codeph">TIMESTAMP</code> values
- with Kudu tables:
+ The following examples demonstrate using <code class="ph codeph">TIMESTAMP</code> values with Kudu
+ tables:
</p>
<pre class="pre codeblock"><code>create table timestamp_t (x int primary key, s string, t timestamp, b bigint)
@@ -575,16 +635,19 @@ select s, t, b from timestamp_t order by t;
</li>
<li class="li">
- To convert to or from different date formats, or perform date arithmetic, use the date and time functions
- described in <a class="xref" href="impala_datetime_functions.html#datetime_functions">Impala Date and Time Functions</a>. In particular, the
- <code class="ph codeph">from_unixtime()</code> function requires a case-sensitive format string such as
- <code class="ph codeph">"yyyy-MM-dd HH:mm:ss.SSSS"</code>, matching one of the allowed variations of a
- <code class="ph codeph">TIMESTAMP</code> value (date plus time, only date, only time, optional fractional seconds).
+ To convert to or from different date formats, or perform date arithmetic, use the date
+ and time functions described in
+ <a class="xref" href="impala_datetime_functions.html#datetime_functions">Impala Date and Time Functions</a>. In
+ particular, the <code class="ph codeph">from_unixtime()</code> function requires a case-sensitive
+ format string such as <code class="ph codeph">"yyyy-MM-dd HH:mm:ss.SSSS"</code>, matching one of the
+ allowed variations of a <code class="ph codeph">TIMESTAMP</code> value (date plus time, only date,
+ only time, optional fractional seconds).
</li>
<li class="li">
- See <a class="xref" href="impala_langref_unsupported.html#langref_hiveql_delta">SQL Differences Between Impala and Hive</a> for details about differences in
- <code class="ph codeph">TIMESTAMP</code> handling between Impala and Hive.
+ See <a class="xref" href="impala_langref_unsupported.html#langref_hiveql_delta">SQL Differences Between Impala and Hive</a> for
+ details about differences in <code class="ph codeph">TIMESTAMP</code> handling between Impala and
+ Hive.
</li>
</ul>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_tinyint.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_tinyint.html b/docs/build/html/topics/impala_tinyint.html
index c097a55..4f3f956 100644
--- a/docs/build/html/topics/impala_tinyint.html
+++ b/docs/build/html/topics/impala_tinyint.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="tinyint"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>TINYINT Data Type</title></head><body id="tinyint"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="tinyint"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>TINYINT Data Type</title></head><body id="tinyint"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">TINYINT Data Type</h1>
@@ -31,11 +31,13 @@
<code class="ph codeph">INT</code>, or <code class="ph codeph">BIGINT</code>) or a floating-point type (<code class="ph codeph">FLOAT</code> or
<code class="ph codeph">DOUBLE</code>) automatically. Use <code class="ph codeph">CAST()</code> to convert to <code class="ph codeph">STRING</code> or
<code class="ph codeph">TIMESTAMP</code>.
- <span class="ph">Casting an integer or floating-point value <code class="ph codeph">N</code> to
+ <span class="ph">
+ Casting an integer or floating-point value <code class="ph codeph">N</code> to
<code class="ph codeph">TIMESTAMP</code> produces a value that is <code class="ph codeph">N</code> seconds past the start of the epoch
date (January 1, 1970). By default, the result value represents a date and time in the UTC time zone.
- If the setting <code class="ph codeph">-use_local_tz_for_unix_timestamp_conversions=true</code> is in effect,
- the resulting <code class="ph codeph">TIMESTAMP</code> represents a date and time in the local time zone.</span>
+ If the setting <code class="ph codeph">--use_local_tz_for_unix_timestamp_conversions=true</code> is in effect,
+ the resulting <code class="ph codeph">TIMESTAMP</code> represents a date and time in the local time zone.
+ </span>
</p>
<p class="p">
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_troubleshooting.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_troubleshooting.html b/docs/build/html/topics/impala_troubleshooting.html
index bd4d7a9..b8e6756 100644
--- a/docs/build/html/topics/impala_troubleshooting.html
+++ b/docs/build/html/topics/impala_troubleshooting.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_webui.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_breakpad.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="troubleshooting"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Troubleshooting Impala</title></head><body id="troubleshooting"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_webui.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_breakpad.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="troubleshooting"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Troubleshooting Impala</title></head><body id="troubleshooting"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Troubleshooting Impala</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_truncate_table.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_truncate_table.html b/docs/build/html/topics/impala_truncate_table.html
index f4059cf..177985f 100644
--- a/docs/build/html/topics/impala_truncate_table.html
+++ b/docs/build/html/topics/impala_truncate_table.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="truncate_table"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>TRUNCATE TABLE Statement (Impala 2.3 or higher only)</title></head><body id="truncate_table"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="truncate_table"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>TRUNCATE TABLE Statement (Impala 2.3 or higher only)</title></head><body id="truncate_table"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">TRUNCATE TABLE Statement (<span class="keyword">Impala 2.3</span> or higher only)</h1>
[12/15] impala git commit: [DOCS] Add Impala docs from branch 2.x
Posted by mi...@apache.org.
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_disable_streaming_preaggregations.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_disable_streaming_preaggregations.html b/docs/build/html/topics/impala_disable_streaming_preaggregations.html
index 0d7afc1..d938857 100644
--- a/docs/build/html/topics/impala_disable_streaming_preaggregations.html
+++ b/docs/build/html/topics/impala_disable_streaming_preaggregations.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="disable_streaming_preaggregations"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DISABLE_STREAMING_PREAGGREGATIONS Query Option (Impala 2.5 or higher only)</title></head><body id="disable_streaming_preaggregations"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="disable_streaming_preaggregations"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DISABLE_STREAMING_PREAGGREGATIONS Query Option (Impala 2.5 or higher only)</title></head><body id="disable_streaming_preaggregations"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">DISABLE_STREAMING_PREAGGREGATIONS Query Option (<span class="keyword">Impala 2.5</span> or higher only)</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_disable_unsafe_spills.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_disable_unsafe_spills.html b/docs/build/html/topics/impala_disable_unsafe_spills.html
index fee603d..45f1b35 100644
--- a/docs/build/html/topics/impala_disable_unsafe_spills.html
+++ b/docs/build/html/topics/impala_disable_unsafe_spills.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="disable_unsafe_spills"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DISABLE_UNSAFE_SPILLS Query Option (Impala 2.0 or higher only)</title></head><body id="disable_unsafe_spills"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="disable_unsafe_spills"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DISABLE_UNSAFE_SPILLS Query Option (Impala 2.0 or higher only)</title></head><body id="disable_unsafe_spills"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">DISABLE_UNSAFE_SPILLS Query Option (<span class="keyword">Impala 2.0</span> or higher only)</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_disk_space.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_disk_space.html b/docs/build/html/topics/impala_disk_space.html
index c9b5cbc..2efefe4 100644
--- a/docs/build/html/topics/impala_disk_space.html
+++ b/docs/build/html/topics/impala_disk_space.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_admin.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="disk_space"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Managing Disk Space for Impala Data</title></head><body id="disk_space"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_admin.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="disk_space"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Managing Disk Space for Impala Data</title></head><body id="disk_space"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Managing Disk Space for Impala Data</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_distinct.html
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diff --git a/docs/build/html/topics/impala_distinct.html b/docs/build/html/topics/impala_distinct.html
index 303cced..552e413 100644
--- a/docs/build/html/topics/impala_distinct.html
+++ b/docs/build/html/topics/impala_distinct.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_select.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="distinct"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DISTINCT Operator</title></head><body id="distinct"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_select.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="distinct"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DISTINCT Operator</title></head><body id="distinct"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">DISTINCT Operator</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_dml.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_dml.html b/docs/build/html/topics/impala_dml.html
index 8efbd37..4562fdf 100644
--- a/docs/build/html/topics/impala_dml.html
+++ b/docs/build/html/topics/impala_dml.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="dml"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DML Statements</title></head><body id="dml"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="dml"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DML Statements</title></head><body id="dml"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">DML Statements</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_double.html
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diff --git a/docs/build/html/topics/impala_double.html b/docs/build/html/topics/impala_double.html
index 54b92ec..de87ab6 100644
--- a/docs/build/html/topics/impala_double.html
+++ b/docs/build/html/topics/impala_double.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="double"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DOUBLE Data Type</title></head><body id="double"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="double"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DOUBLE Data Type</title></head><body id="double"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">DOUBLE Data Type</h1>
@@ -44,11 +44,13 @@
<code class="ph codeph">STRING</code>, <code class="ph codeph">TIMESTAMP</code>, or <code class="ph codeph">BOOLEAN</code>. You can use exponential
notation in <code class="ph codeph">DOUBLE</code> literals or when casting from <code class="ph codeph">STRING</code>, for example
<code class="ph codeph">1.0e6</code> to represent one million.
- <span class="ph">Casting an integer or floating-point value <code class="ph codeph">N</code> to
+ <span class="ph">
+ Casting an integer or floating-point value <code class="ph codeph">N</code> to
<code class="ph codeph">TIMESTAMP</code> produces a value that is <code class="ph codeph">N</code> seconds past the start of the epoch
date (January 1, 1970). By default, the result value represents a date and time in the UTC time zone.
- If the setting <code class="ph codeph">-use_local_tz_for_unix_timestamp_conversions=true</code> is in effect,
- the resulting <code class="ph codeph">TIMESTAMP</code> represents a date and time in the local time zone.</span>
+ If the setting <code class="ph codeph">--use_local_tz_for_unix_timestamp_conversions=true</code> is in effect,
+ the resulting <code class="ph codeph">TIMESTAMP</code> represents a date and time in the local time zone.
+ </span>
</p>
<p class="p">
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_drop_database.html
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+++ b/docs/build/html/topics/impala_drop_database.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="drop_database"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DROP DATABASE Statement</title></head><body id="drop_database"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="drop_database"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DROP DATABASE Statement</title></head><body id="drop_database"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">DROP DATABASE Statement</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_drop_function.html
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diff --git a/docs/build/html/topics/impala_drop_function.html b/docs/build/html/topics/impala_drop_function.html
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--- a/docs/build/html/topics/impala_drop_function.html
+++ b/docs/build/html/topics/impala_drop_function.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="drop_function"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DROP FUNCTION Statement</title></head><body id="drop_function"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="drop_function"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DROP FUNCTION Statement</title></head><body id="drop_function"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">DROP FUNCTION Statement</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_drop_role.html
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diff --git a/docs/build/html/topics/impala_drop_role.html b/docs/build/html/topics/impala_drop_role.html
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--- a/docs/build/html/topics/impala_drop_role.html
+++ b/docs/build/html/topics/impala_drop_role.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="drop_role"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DROP ROLE Statement (Impala 2.0 or higher only)</title></head><body id="drop_role"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="drop_role"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DROP ROLE Statement (Impala 2.0 or higher only)</title></head><body id="drop_role"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">DROP ROLE Statement (<span class="keyword">Impala 2.0</span> or higher only)</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_drop_stats.html
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diff --git a/docs/build/html/topics/impala_drop_stats.html b/docs/build/html/topics/impala_drop_stats.html
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--- a/docs/build/html/topics/impala_drop_stats.html
+++ b/docs/build/html/topics/impala_drop_stats.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="drop_stats"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DROP STATS Statement</title></head><body id="drop_stats"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="drop_stats"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DROP STATS Statement</title></head><body id="drop_stats"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">DROP STATS Statement</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_drop_table.html
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index 54c82a7..ac156bd 100644
--- a/docs/build/html/topics/impala_drop_table.html
+++ b/docs/build/html/topics/impala_drop_table.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="drop_table"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DROP TABLE Statement</title></head><body id="drop_table"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="drop_table"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DROP TABLE Statement</title></head><body id="drop_table"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">DROP TABLE Statement</h1>
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+++ b/docs/build/html/topics/impala_drop_view.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="drop_view"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DROP VIEW Statement</title></head><body id="drop_view"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="drop_view"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>DROP VIEW Statement</title></head><body id="drop_view"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">DROP VIEW Statement</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_exec_single_node_rows_threshold.html
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diff --git a/docs/build/html/topics/impala_exec_single_node_rows_threshold.html b/docs/build/html/topics/impala_exec_single_node_rows_threshold.html
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--- a/docs/build/html/topics/impala_exec_single_node_rows_threshold.html
+++ b/docs/build/html/topics/impala_exec_single_node_rows_threshold.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="exec_single_node_rows_threshold"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>EXEC_SINGLE_NODE_ROWS_THRESHOLD Query Option (Impala 2.1 or higher only)</title></head><body id="exec_single_node_rows_threshold"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="exec_single_node_rows_threshold"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>EXEC_SINGLE_NODE_ROWS_THRESHOLD Query Option (Impala 2.1 or higher only)</title></head><body id="exec_single_node_rows_threshold"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">EXEC_SINGLE_NODE_ROWS_THRESHOLD Query Option (<span class="keyword">Impala 2.1</span> or higher only)</h1>
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@@ -0,0 +1,70 @@
+<!DOCTYPE html
+ SYSTEM "about:legacy-compat">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="exec_time_limit_s"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>EXEC_TIME_LIMIT_S Query Option (Impala 2.12 or higher only)</title></head><body id="exec_time_limit_s"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+
+ <h1 class="title topictitle1" id="ariaid-title1">EXEC_TIME_LIMIT_S Query Option (<span class="keyword">Impala 2.12</span> or higher only)</h1>
+
+
+
+
+
+ <div class="body conbody">
+
+ <p class="p">
+ The <code class="ph codeph">EXEC_TIME_LIMIT_S</code> query option sets a time limit on query execution.
+ If a query is still executing when time limit expires, it is automatically canceled. The
+ option is intended to prevent runaway queries that execute for much longer than intended.
+ </p>
+
+ <p class="p">
+ For example, an Impala administrator could set a default value of
+ <code class="ph codeph">EXEC_TIME_LIMIT_S=3600</code> for a resource pool to automatically kill queries
+ that execute for longer than one hour (see
+ <a class="xref" href="impala_admission.html#admission_control">Admission Control and Query Queuing</a> for information about default query
+ options). Then, if a user accidentally runs a large query that executes for more than one
+ hour, it will be automatically killed after the time limit expires to free up resources.
+ Users can override the default value per query or per session if they do not want the
+ default <code class="ph codeph">EXEC_TIME_LIMIT_S</code> value to apply to a specific query or a
+ session.
+ </p>
+
+ <div class="note note note_note"><span class="note__title notetitle">Note:</span>
+ <p class="p">
+ The time limit only starts once the query is executing. Time spent planning the query,
+ scheduling the query, or in admission control is not counted towards the execution time
+ limit. <code class="ph codeph">SELECT</code> statements are eligible for automatic cancellation until
+ the client has fetched all result rows. DML queries are eligible for automatic
+ cancellation until the DML statement has finished.
+ </p>
+ </div>
+
+ <p class="p">
+ <strong class="ph b">Syntax:</strong>
+ </p>
+
+<pre class="pre codeblock"><code>SET EXEC_TIME_LIMIT_S=<var class="keyword varname">seconds</var>;</code></pre>
+
+ <p class="p">
+ <strong class="ph b">Type:</strong> numeric
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Default:</strong> 0 (no time limit )
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Added in:</strong>
+ <span class="keyword">Impala 2.12</span>
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Related information:</strong>
+ </p>
+
+ <p class="p">
+ <a class="xref" href="impala_timeouts.html#timeouts">Setting Timeout Periods for Daemons, Queries, and Sessions</a>
+ </p>
+
+ </div>
+
+<nav role="navigation" class="related-links"><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_query_options.html">Query Options for the SET Statement</a></div></div></nav></article></main></body></html>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_explain.html
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<!DOCTYPE html
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-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="explain"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>EXPLAIN Statement</title></head><body id="explain"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="explain"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>EXPLAIN Statement</title></head><body id="explain"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">EXPLAIN Statement</h1>
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<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="explain_level"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>EXPLAIN_LEVEL Query Option</title></head><body id="explain_level"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="explain_level"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>EXPLAIN_LEVEL Query Option</title></head><body id="explain_level"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">EXPLAIN_LEVEL Query Option</h1>
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<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_performance.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="explain_plan"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Understanding Impala Query Performance - EXPLAIN Plans and Query Profiles</title>
</head><body id="explain_plan"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_performance.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="explain_plan"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Understanding Impala Query Performance - EXPLAIN Plans and Query Profiles</title>
</head><body id="explain_plan"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Understanding Impala Query Performance - EXPLAIN Plans and Query Profiles</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_faq.html
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diff --git a/docs/build/html/topics/impala_faq.html b/docs/build/html/topics/impala_faq.html
index 9aa68a5..117680e 100644
--- a/docs/build/html/topics/impala_faq.html
+++ b/docs/build/html/topics/impala_faq.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="faq"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Frequently Asked Questions</title></head><body id="faq"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="faq"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Frequently Asked Questions</title></head><body id="faq"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Impala Frequently Asked Questions</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_file_formats.html
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diff --git a/docs/build/html/topics/impala_file_formats.html b/docs/build/html/topics/impala_file_formats.html
index 37d341b..5a1101c 100644
--- a/docs/build/html/topics/impala_file_formats.html
+++ b/docs/build/html/topics/impala_file_formats.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_txtfile.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_parquet.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_avro.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_rcfile.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_seqfile.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="file_formats"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>How Impala Works with Hado
op File Formats</title></head><body id="file_formats"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_txtfile.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_parquet.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_avro.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_rcfile.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_seqfile.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="file_formats"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>How Impala Works with Hado
op File Formats</title></head><body id="file_formats"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">How Impala Works with Hadoop File Formats</h1>
[04/15] impala git commit: [DOCS] Add Impala docs from branch 2.x
Posted by mi...@apache.org.
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_porting.html
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diff --git a/docs/build/html/topics/impala_porting.html b/docs/build/html/topics/impala_porting.html
index 3935fbd..b0cc056 100644
--- a/docs/build/html/topics/impala_porting.html
+++ b/docs/build/html/topics/impala_porting.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="porting"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Porting SQL from Other Database Systems to Impala</title></head><body id="porting"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="porting"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Porting SQL from Other Database Systems to Impala</title></head><body id="porting"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Porting SQL from Other Database Systems to Impala</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_ports.html
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diff --git a/docs/build/html/topics/impala_ports.html b/docs/build/html/topics/impala_ports.html
index 451b9ac..3594704 100644
--- a/docs/build/html/topics/impala_ports.html
+++ b/docs/build/html/topics/impala_ports.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="ports"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Ports Used by Impala</title></head><body id="ports"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="ports"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Ports Used by Impala</title></head><body id="ports"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Ports Used by Impala</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_prefetch_mode.html
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diff --git a/docs/build/html/topics/impala_prefetch_mode.html b/docs/build/html/topics/impala_prefetch_mode.html
index bf8e787..503cf05 100644
--- a/docs/build/html/topics/impala_prefetch_mode.html
+++ b/docs/build/html/topics/impala_prefetch_mode.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="prefetch_mode"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>PREFETCH_MODE Query Option (Impala 2.6 or higher only)</title></head><body id="prefetch_mode"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="prefetch_mode"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>PREFETCH_MODE Query Option (Impala 2.6 or higher only)</title></head><body id="prefetch_mode"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">PREFETCH_MODE Query Option (<span class="keyword">Impala 2.6</span> or higher only)</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_prereqs.html
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diff --git a/docs/build/html/topics/impala_prereqs.html b/docs/build/html/topics/impala_prereqs.html
index 85e3a98..b67fc55 100644
--- a/docs/build/html/topics/impala_prereqs.html
+++ b/docs/build/html/topics/impala_prereqs.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_planning.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="prereqs"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Requirements</title></head><body id="prereqs"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_planning.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="prereqs"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Requirements</title></head><body id="prereqs"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Impala Requirements</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_processes.html
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diff --git a/docs/build/html/topics/impala_processes.html b/docs/build/html/topics/impala_processes.html
index d4901c8..853f985 100644
--- a/docs/build/html/topics/impala_processes.html
+++ b/docs/build/html/topics/impala_processes.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_config_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="processes"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Starting Impala</title></head><body id="processes"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_config_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="processes"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Starting Impala</title></head><body id="processes"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Starting Impala</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_proxy.html
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diff --git a/docs/build/html/topics/impala_proxy.html b/docs/build/html/topics/impala_proxy.html
index aba5c83..d606042 100644
--- a/docs/build/html/topics/impala_proxy.html
+++ b/docs/build/html/topics/impala_proxy.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_admin.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="proxy"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Using Impala through a Proxy for High Availability</title></head><body id="proxy"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_admin.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="proxy"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Using Impala through a Proxy for High Availability</title></head><body id="proxy"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Using Impala through a Proxy for High Availability</h1>
@@ -71,9 +71,12 @@
<ol class="ol">
<li class="li">
- Download the load-balancing proxy software. It should only need to be installed and configured on a
- single host. Pick a host other than the DataNodes where <span class="keyword cmdname">impalad</span> is running,
- because the intention is to protect against the possibility of one or more of these DataNodes becoming unavailable.
+ Select and download the load-balancing proxy software or other
+ load-balancing hardware appliance. It should only need to be installed
+ and configured on a single host, typically on an edge node. Pick a
+ host other than the DataNodes where <span class="keyword cmdname">impalad</span> is
+ running, because the intention is to protect against the possibility
+ of one or more of these DataNodes becoming unavailable.
</li>
<li class="li">
@@ -81,38 +84,26 @@
In particular:
<ul class="ul">
<li class="li">
- <p class="p">
- Set up a port that the load balancer will listen on to relay Impala requests back and forth.
- </p>
- </li>
+ Set up a port that the load balancer will listen on to relay
+ Impala requests back and forth. </li>
<li class="li">
- <p class="p">
- Consider enabling <span class="q">"sticky sessions"</span>. Where practical, enable this setting
- so that stateless client applications such as <span class="keyword cmdname">impalad</span> and Hue
- are not disconnected from long-running queries. Evaluate whether this setting is
- appropriate for your combination of workload and client applications.
- </p>
+ See <a class="xref" href="#proxy_balancing">Choosing the Load-Balancing Algorithm</a> for load
+ balancing algorithm options.
</li>
<li class="li">
- <p class="p">
- For Kerberized clusters, follow the instructions in <a class="xref" href="impala_proxy.html#proxy_kerberos">Special Proxy Considerations for Clusters Using Kerberos</a>.
- </p>
+ For Kerberized clusters, follow the instructions in <a class="xref" href="impala_proxy.html#proxy_kerberos">Special Proxy Considerations for Clusters Using Kerberos</a>.
</li>
</ul>
</li>
<li class="li">
- Specify the host and port settings for each Impala node. These are the hosts that the load balancer will
- choose from when relaying each Impala query. See <a class="xref" href="impala_ports.html#ports">Ports Used by Impala</a> for when to use
- port 21000, 21050, or another value depending on what type of connections you are load balancing.
- <div class="note note note_note"><span class="note__title notetitle">Note:</span>
- <p class="p">
- In particular, if you are using Hue or JDBC-based applications,
- you typically set up load balancing for both ports 21000 and 21050, because
- these client applications connect through port 21050 while the <span class="keyword cmdname">impala-shell</span>
- command connects through port 21000.
- </p>
- </div>
+ If you are using Hue or JDBC-based applications, you typically set
+ up load balancing for both ports 21000 and 21050, because these client
+ applications connect through port 21050 while the
+ <span class="keyword cmdname">impala-shell</span> command connects through port
+ 21000. See <a class="xref" href="impala_ports.html#ports">Ports Used by Impala</a> for when to use port
+ 21000, 21050, or another value depending on what type of connections
+ you are load balancing.
</li>
<li class="li">
@@ -120,9 +111,11 @@
</li>
<li class="li">
- For any scripts, jobs, or configuration settings for applications that formerly connected to a specific
- datanode to run Impala SQL statements, change the connection information (such as the <code class="ph codeph">-i</code>
- option in <span class="keyword cmdname">impala-shell</span>) to point to the load balancer instead.
+ For any scripts, jobs, or configuration settings for applications
+ that formerly connected to a specific DataNode to run Impala SQL
+ statements, change the connection information (such as the
+ <code class="ph codeph">-i</code> option in <span class="keyword cmdname">impala-shell</span>) to
+ point to the load balancer instead.
</li>
</ol>
@@ -135,20 +128,122 @@
</article>
-
+ <article class="topic concept nested1" aria-labelledby="ariaid-title3" id="proxy__proxy_balancing">
+ <h2 class="title topictitle2" id="ariaid-title3">Choosing the Load-Balancing Algorithm</h2>
+ <div class="body conbody">
+ <p class="p">
+ Load-balancing software offers a number of algorithms to distribute requests.
+ Each algorithm has its own characteristics that make it suitable in some situations
+ but not others.
+ </p>
+
+ <dl class="dl">
+
+ <dt class="dt dlterm">Leastconn</dt>
+ <dd class="dd">
+ Connects sessions to the coordinator with the fewest connections,
+ to balance the load evenly. Typically used for workloads consisting
+ of many independent, short-running queries. In configurations with
+ only a few client machines, this setting can avoid having all
+ requests go to only a small set of coordinators.
+ </dd>
+ <dd class="dd ddexpand">
+ Recommended for Impala with F5.
+ </dd>
+
+
+ <dt class="dt dlterm">Source IP Persistence</dt>
+ <dd class="dd">
+ <p class="p">
+ Sessions from the same IP address always go to the same
+ coordinator. A good choice for Impala workloads containing a mix
+ of queries and DDL statements, such as <code class="ph codeph">CREATE TABLE</code>
+ and <code class="ph codeph">ALTER TABLE</code>. Because the metadata changes from
+ a DDL statement take time to propagate across the cluster, prefer
+ to use the Source IP Persistence in this case. If you are unable
+ to choose Source IP Persistence, run the DDL and subsequent queries
+ that depend on the results of the DDL through the same session,
+ for example by running <code class="ph codeph">impala-shell -f <var class="keyword varname">script_file</var></code>
+ to submit several statements through a single session.
+ </p>
+ </dd>
+ <dd class="dd ddexpand">
+ <p class="p">
+ Required for setting up high availability with Hue.
+ </p>
+ </dd>
+
- <article class="topic concept nested1" aria-labelledby="ariaid-title3" id="proxy__proxy_kerberos">
+ <dt class="dt dlterm">Round-robin</dt>
+ <dd class="dd">
+ <p class="p">
+ Distributes connections to all coordinator nodes.
+ Typically not recommended for Impala.
+ </p>
+ </dd>
+
+ </dl>
+
+ <p class="p">
+ You might need to perform benchmarks and load testing to determine
+ which setting is optimal for your use case. Always set up using two
+ load-balancing algorithms: Source IP Persistence for Hue and Leastconn
+ for others.
+ </p>
- <h2 class="title topictitle2" id="ariaid-title3">Special Proxy Considerations for Clusters Using Kerberos</h2>
+ </div>
+ </article>
+
+ <article class="topic concept nested1" aria-labelledby="ariaid-title4" id="proxy__proxy_kerberos">
+
+ <h2 class="title topictitle2" id="ariaid-title4">Special Proxy Considerations for Clusters Using Kerberos</h2>
<div class="body conbody">
<p class="p">
- In a cluster using Kerberos, applications check host credentials to verify that the host they are
- connecting to is the same one that is actually processing the request, to prevent man-in-the-middle
- attacks. To clarify that the load-balancing proxy server is legitimate, perform these extra Kerberos setup
- steps:
+ In a cluster using Kerberos, applications check host credentials to
+ verify that the host they are connecting to is the same one that is
+ actually processing the request, to prevent man-in-the-middle attacks.
+ </p>
+ <p class="p">
+ In <span class="keyword">Impala 2.11</span> and lower
+ versions, once you enable a proxy server in a Kerberized cluster, users
+ will not be able to connect to individual impala daemons directly from
+ impala-shell.
+ </p>
+
+ <p class="p">
+ In <span class="keyword">Impala 2.12</span> and higher,
+ if you enable a proxy server in a Kerberized cluster, users have an
+ option to connect to Impala daemons directly from
+ <span class="keyword cmdname">impala-shell</span> using the <code class="ph codeph">-b</code> /
+ <code class="ph codeph">--kerberos_host_fqdn</code> option when you start
+ <span class="keyword cmdname">impala-shell</span>. This option can be used for testing or
+ troubleshooting purposes, but not recommended for live production
+ environments as it defeats the purpose of a load balancer/proxy.
+ </p>
+
+ <div class="p">
+ Example:
+<pre class="pre codeblock"><code>
+impala-shell -i impalad-1.mydomain.com -k -b loadbalancer-1.mydomain.com
+</code></pre>
+ </div>
+
+ <div class="p">
+ Alternatively, with the fully qualified
+ configurations:
+<pre class="pre codeblock"><code>impala-shell --impalad=impalad-1.mydomain.com:21000 --kerberos --kerberos_host_fqdn=loadbalancer-1.mydomain.com</code></pre>
+ </div>
+ <p class="p">
+ See <a class="xref" href="impala_shell_options.html#shell_options">impala-shell Configuration Options</a> for
+ information about the option.
+ </p>
+
+ <p class="p">
+ To clarify that the load-balancing proxy server is legitimate, perform
+ these extra Kerberos setup steps:
</p>
<ol class="ol">
@@ -248,9 +343,9 @@ klist -k <var class="keyword varname">keytabfile</var>
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title4" id="proxy__tut_proxy">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title5" id="proxy__tut_proxy">
- <h2 class="title topictitle2" id="ariaid-title4">Example of Configuring HAProxy Load Balancer for Impala</h2>
+ <h2 class="title topictitle2" id="ariaid-title5">Example of Configuring HAProxy Load Balancer for Impala</h2>
<div class="body conbody">
@@ -375,11 +470,18 @@ listen impalajdbc :21051
mode tcp
option tcplog
balance source
- server <var class="keyword varname">symbolic_name_5</var> impala-host-1.example.com:21050
- server <var class="keyword varname">symbolic_name_6</var> impala-host-2.example.com:21050
- server <var class="keyword varname">symbolic_name_7</var> impala-host-3.example.com:21050
- server <var class="keyword varname">symbolic_name_8</var> impala-host-4.example.com:21050
+ server <var class="keyword varname">symbolic_name_5</var> impala-host-1.example.com:21050 check
+ server <var class="keyword varname">symbolic_name_6</var> impala-host-2.example.com:21050 check
+ server <var class="keyword varname">symbolic_name_7</var> impala-host-3.example.com:21050 check
+ server <var class="keyword varname">symbolic_name_8</var> impala-host-4.example.com:21050 check
</code></pre>
+ <div class="note important note_important"><span class="note__title importanttitle">Important:</span>
+ Hue requires the <code class="ph codeph">check</code> option at end of each line in
+ the above file to ensure HAProxy can detect any unreachable Impalad
+ server, and failover can be successful. Without the TCP check, you may hit
+ an error when the <span class="keyword cmdname">impalad</span> daemon to which Hue tries to
+ connect is down.
+ </div>
<div class="note note note_note"><span class="note__title notetitle">Note:</span>
If your JDBC or ODBC application connects to Impala through a load balancer such as
@@ -393,4 +495,4 @@ listen impalajdbc :21051
</article>
-</article></main></body></html>
\ No newline at end of file
+</article></main></body></html>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_query_options.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_query_options.html b/docs/build/html/topics/impala_query_options.html
index a5173d8..7bf7dc0 100644
--- a/docs/build/html/topics/impala_query_options.html
+++ b/docs/build/html/topics/impala_query_options.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_set.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_abort_on_default_limit_exceeded.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_abort_on_error.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_allow_unsupported_formats.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_appx_count_distinct.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_batch_size.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_buffer_pool_limit.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_compression_codec.html"><meta name="DC.Relation" scheme="
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topics/impala_mt_dop.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_num_nodes.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_num_scanner_threads.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_optimize_partition_key_scans.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_parquet_compression_codec.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_parquet_annotate_strings_utf8.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_parquet_fallback_schema_resolution.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_parquet_file_size.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_prefetch_mode.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_timeout_s.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_request_pool.html"><meta name="DC.Relation" scheme="URI" content="../topics/im
pala_replica_preference.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_reservation_request_timeout.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_runtime_bloom_filter_size.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_runtime_filter_max_size.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_runtime_filter_min_size.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_runtime_filter_mode.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_runtime_filter_wait_time_ms.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_s3_skip_insert_staging.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_scan_node_codegen_threshold.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_schedule_random_replica.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_scratch_limit.html"><meta name="DC.Relation" sch
eme="URI" content="../topics/impala_support_start_over.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_sync_ddl.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_v_cpu_cores.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="query_options"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Query Options for the SET Statement</title></head><body id="query_options"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_set.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_abort_on_default_limit_exceeded.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_abort_on_error.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_allow_unsupported_formats.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_appx_count_distinct.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_batch_size.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_buffer_pool_limit.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_compression_codec.html"><meta name="DC.Relation" scheme="
URI" content="../topics/impala_compute_stats_min_sample_size.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_debug_action.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_decimal_v2.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_default_join_distribution_mode.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_default_order_by_limit.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_default_spillable_buffer_size.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_disable_codegen.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_disable_row_runtime_filtering.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_disable_streaming_preaggregations.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_disable_unsafe_spills.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_exec_single_node_rows_thre
shold.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_exec_time_limit_s.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_explain_level.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_hbase_cache_blocks.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_hbase_caching.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_live_progress.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_live_summary.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_max_errors.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_max_io_buffers.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_max_row_size.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_max_num_runtime_filters.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_max_scan_range_length.html"><meta name="DC.Relation" scheme="URI"
content="../topics/impala_mem_limit.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_min_spillable_buffer_size.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_mt_dop.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_num_nodes.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_num_scanner_threads.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_optimize_partition_key_scans.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_parquet_compression_codec.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_parquet_annotate_strings_utf8.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_parquet_fallback_schema_resolution.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_parquet_file_size.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_prefetch_mode.html"><meta name="DC.Relation" scheme="URI" co
ntent="../topics/impala_query_timeout_s.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_request_pool.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_replica_preference.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_reservation_request_timeout.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_runtime_bloom_filter_size.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_runtime_filter_max_size.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_runtime_filter_min_size.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_runtime_filter_mode.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_runtime_filter_wait_time_ms.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_s3_skip_insert_staging.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_scan_node_codegen_threshold.html"><meta name="DC.Rel
ation" scheme="URI" content="../topics/impala_schedule_random_replica.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_scratch_limit.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_shuffle_distinct_exprs.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_support_start_over.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_sync_ddl.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_v_cpu_cores.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="query_options"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Query Options for the SET Statement</title></head><body id="query_options"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Query Options for the SET Statement</h1>
@@ -52,4 +52,4 @@
<a class="xref" href="impala_set.html#set">SET Statement</a>
</p>
</div>
-<nav role="navigation" class="related-links"><ul class="ullinks"><li class="link ulchildlink"><strong><a href="../topics/impala_abort_on_default_limit_exceeded.html">ABORT_ON_DEFAULT_LIMIT_EXCEEDED Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_abort_on_error.html">ABORT_ON_ERROR Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_allow_unsupported_formats.html">ALLOW_UNSUPPORTED_FORMATS Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_appx_count_distinct.html">APPX_COUNT_DISTINCT Query Option (Impala 2.0 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_batch_size.html">BATCH_SIZE Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_buffer_pool_limit.html">BUFFER_POOL_LIMIT Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a hr
ef="../topics/impala_compression_codec.html">COMPRESSION_CODEC Query Option (Impala 2.0 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_debug_action.html">DEBUG_ACTION Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_decimal_v2.html">DECIMAL_V2 Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_default_join_distribution_mode.html">DEFAULT_JOIN_DISTRIBUTION_MODE Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_default_order_by_limit.html">DEFAULT_ORDER_BY_LIMIT Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_default_spillable_buffer_size.html">DEFAULT_SPILLABLE_BUFFER_SIZE Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_disable_codegen.html">DISABLE_CODEGEN Query Option</a></strong><br></li><li cl
ass="link ulchildlink"><strong><a href="../topics/impala_disable_row_runtime_filtering.html">DISABLE_ROW_RUNTIME_FILTERING Query Option (Impala 2.5 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_disable_streaming_preaggregations.html">DISABLE_STREAMING_PREAGGREGATIONS Query Option (Impala 2.5 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_disable_unsafe_spills.html">DISABLE_UNSAFE_SPILLS Query Option (Impala 2.0 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_exec_single_node_rows_threshold.html">EXEC_SINGLE_NODE_ROWS_THRESHOLD Query Option (Impala 2.1 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_explain_level.html">EXPLAIN_LEVEL Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_hbase_cache_blocks.html">HBASE_CACHE_BLOCKS Query
Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_hbase_caching.html">HBASE_CACHING Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_live_progress.html">LIVE_PROGRESS Query Option (Impala 2.3 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_live_summary.html">LIVE_SUMMARY Query Option (Impala 2.3 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_max_errors.html">MAX_ERRORS Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_max_io_buffers.html">MAX_IO_BUFFERS Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_max_row_size.html">MAX_ROW_SIZE Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_max_num_runtime_filters.html">MAX_NUM_RUNTIME_FILTERS Query Option (Imp
ala 2.5 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_max_scan_range_length.html">MAX_SCAN_RANGE_LENGTH Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_mem_limit.html">MEM_LIMIT Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_min_spillable_buffer_size.html">MIN_SPILLABLE_BUFFER_SIZE Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_mt_dop.html">MT_DOP Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_num_nodes.html">NUM_NODES Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_num_scanner_threads.html">NUM_SCANNER_THREADS Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_optimize_partition_key_scans.html">OPTIMIZE_PARTITION_KEY_SCANS Query Option (Imp
ala 2.5 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_parquet_compression_codec.html">PARQUET_COMPRESSION_CODEC Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_parquet_annotate_strings_utf8.html">PARQUET_ANNOTATE_STRINGS_UTF8 Query Option (Impala 2.6 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_parquet_fallback_schema_resolution.html">PARQUET_FALLBACK_SCHEMA_RESOLUTION Query Option (Impala 2.6 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_parquet_file_size.html">PARQUET_FILE_SIZE Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_prefetch_mode.html">PREFETCH_MODE Query Option (Impala 2.6 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_query_timeout_s.html">QUERY_TIMEOUT_S Query
Option (Impala 2.0 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_request_pool.html">REQUEST_POOL Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_replica_preference.html">REPLICA_PREFERENCE Query Option (Impala 2.7 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_reservation_request_timeout.html">RESERVATION_REQUEST_TIMEOUT Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_runtime_bloom_filter_size.html">RUNTIME_BLOOM_FILTER_SIZE Query Option (Impala 2.5 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_runtime_filter_max_size.html">RUNTIME_FILTER_MAX_SIZE Query Option (Impala 2.6 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_runtime_filter_min_size.html">RUNTIME_FILTER_MIN_SIZE Query
Option (Impala 2.6 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_runtime_filter_mode.html">RUNTIME_FILTER_MODE Query Option (Impala 2.5 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_runtime_filter_wait_time_ms.html">RUNTIME_FILTER_WAIT_TIME_MS Query Option (Impala 2.5 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_s3_skip_insert_staging.html">S3_SKIP_INSERT_STAGING Query Option (Impala 2.6 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_scan_node_codegen_threshold.html">SCAN_NODE_CODEGEN_THRESHOLD Query Option (Impala 2.5 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_schedule_random_replica.html">SCHEDULE_RANDOM_REPLICA Query Option (Impala 2.5 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a
href="../topics/impala_scratch_limit.html">SCRATCH_LIMIT Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_support_start_over.html">SUPPORT_START_OVER Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_sync_ddl.html">SYNC_DDL Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_v_cpu_cores.html">V_CPU_CORES Query Option</a></strong><br></li></ul><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_set.html">SET Statement</a></div></div></nav></article></main></body></html>
\ No newline at end of file
+<nav role="navigation" class="related-links"><ul class="ullinks"><li class="link ulchildlink"><strong><a href="../topics/impala_abort_on_default_limit_exceeded.html">ABORT_ON_DEFAULT_LIMIT_EXCEEDED Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_abort_on_error.html">ABORT_ON_ERROR Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_allow_unsupported_formats.html">ALLOW_UNSUPPORTED_FORMATS Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_appx_count_distinct.html">APPX_COUNT_DISTINCT Query Option (Impala 2.0 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_batch_size.html">BATCH_SIZE Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_buffer_pool_limit.html">BUFFER_POOL_LIMIT Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a hr
ef="../topics/impala_compression_codec.html">COMPRESSION_CODEC Query Option (Impala 2.0 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_compute_stats_min_sample_size.html">COMPUTE_STATS_MIN_SAMPLE_SIZE Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_debug_action.html">DEBUG_ACTION Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_decimal_v2.html">DECIMAL_V2 Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_default_join_distribution_mode.html">DEFAULT_JOIN_DISTRIBUTION_MODE Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_default_order_by_limit.html">DEFAULT_ORDER_BY_LIMIT Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_default_spillable_buffer_size.html">DEFAULT_SPILLABLE_BUFFER_SIZE Query Option
</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_disable_codegen.html">DISABLE_CODEGEN Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_disable_row_runtime_filtering.html">DISABLE_ROW_RUNTIME_FILTERING Query Option (Impala 2.5 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_disable_streaming_preaggregations.html">DISABLE_STREAMING_PREAGGREGATIONS Query Option (Impala 2.5 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_disable_unsafe_spills.html">DISABLE_UNSAFE_SPILLS Query Option (Impala 2.0 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_exec_single_node_rows_threshold.html">EXEC_SINGLE_NODE_ROWS_THRESHOLD Query Option (Impala 2.1 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_exec_time_limit_s
.html">EXEC_TIME_LIMIT_S Query Option (Impala 2.12 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_explain_level.html">EXPLAIN_LEVEL Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_hbase_cache_blocks.html">HBASE_CACHE_BLOCKS Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_hbase_caching.html">HBASE_CACHING Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_live_progress.html">LIVE_PROGRESS Query Option (Impala 2.3 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_live_summary.html">LIVE_SUMMARY Query Option (Impala 2.3 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_max_errors.html">MAX_ERRORS Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_ma
x_io_buffers.html">MAX_IO_BUFFERS Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_max_row_size.html">MAX_ROW_SIZE Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_max_num_runtime_filters.html">MAX_NUM_RUNTIME_FILTERS Query Option (Impala 2.5 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_max_scan_range_length.html">MAX_SCAN_RANGE_LENGTH Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_mem_limit.html">MEM_LIMIT Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_min_spillable_buffer_size.html">MIN_SPILLABLE_BUFFER_SIZE Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_mt_dop.html">MT_DOP Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_num_nodes.html">
NUM_NODES Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_num_scanner_threads.html">NUM_SCANNER_THREADS Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_optimize_partition_key_scans.html">OPTIMIZE_PARTITION_KEY_SCANS Query Option (Impala 2.5 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_parquet_compression_codec.html">PARQUET_COMPRESSION_CODEC Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_parquet_annotate_strings_utf8.html">PARQUET_ANNOTATE_STRINGS_UTF8 Query Option (Impala 2.6 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_parquet_fallback_schema_resolution.html">PARQUET_FALLBACK_SCHEMA_RESOLUTION Query Option (Impala 2.6 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_parquet_fil
e_size.html">PARQUET_FILE_SIZE Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_prefetch_mode.html">PREFETCH_MODE Query Option (Impala 2.6 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_query_timeout_s.html">QUERY_TIMEOUT_S Query Option (Impala 2.0 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_request_pool.html">REQUEST_POOL Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_replica_preference.html">REPLICA_PREFERENCE Query Option (Impala 2.7 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_reservation_request_timeout.html">RESERVATION_REQUEST_TIMEOUT Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_runtime_bloom_filter_size.html">RUNTIME_BLOOM_FILTER_SIZE Query Option (Impala 2.5 or high
er only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_runtime_filter_max_size.html">RUNTIME_FILTER_MAX_SIZE Query Option (Impala 2.6 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_runtime_filter_min_size.html">RUNTIME_FILTER_MIN_SIZE Query Option (Impala 2.6 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_runtime_filter_mode.html">RUNTIME_FILTER_MODE Query Option (Impala 2.5 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_runtime_filter_wait_time_ms.html">RUNTIME_FILTER_WAIT_TIME_MS Query Option (Impala 2.5 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_s3_skip_insert_staging.html">S3_SKIP_INSERT_STAGING Query Option (Impala 2.6 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_scan_node_c
odegen_threshold.html">SCAN_NODE_CODEGEN_THRESHOLD Query Option (Impala 2.5 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_schedule_random_replica.html">SCHEDULE_RANDOM_REPLICA Query Option (Impala 2.5 or higher only)</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_scratch_limit.html">SCRATCH_LIMIT Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_shuffle_distinct_exprs.html">SHUFFLE_DISTINCT_EXPRS Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_support_start_over.html">SUPPORT_START_OVER Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_sync_ddl.html">SYNC_DDL Query Option</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_v_cpu_cores.html">V_CPU_CORES Query Option</a></strong><br></li></ul><div class="familylinks"><div c
lass="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_set.html">SET Statement</a></div></div></nav></article></main></body></html>
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_query_timeout_s.html
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diff --git a/docs/build/html/topics/impala_query_timeout_s.html b/docs/build/html/topics/impala_query_timeout_s.html
index c79bff5..ba08951 100644
--- a/docs/build/html/topics/impala_query_timeout_s.html
+++ b/docs/build/html/topics/impala_query_timeout_s.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="query_timeout_s"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>QUERY_TIMEOUT_S Query Option (Impala 2.0 or higher only)</title></head><body id="query_timeout_s"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="query_timeout_s"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>QUERY_TIMEOUT_S Query Option (Impala 2.0 or higher only)</title></head><body id="query_timeout_s"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">QUERY_TIMEOUT_S Query Option (<span class="keyword">Impala 2.0</span> or higher only)</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_rcfile.html
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diff --git a/docs/build/html/topics/impala_rcfile.html b/docs/build/html/topics/impala_rcfile.html
index 666b979..18b1694 100644
--- a/docs/build/html/topics/impala_rcfile.html
+++ b/docs/build/html/topics/impala_rcfile.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_file_formats.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="rcfile"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Using the RCFile File Format with Impala Tables</title></head><body id="rcfile"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_file_formats.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="rcfile"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Using the RCFile File Format with Impala Tables</title></head><body id="rcfile"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Using the RCFile File Format with Impala Tables</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_real.html
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diff --git a/docs/build/html/topics/impala_real.html b/docs/build/html/topics/impala_real.html
index cbc6b09..ea25d59 100644
--- a/docs/build/html/topics/impala_real.html
+++ b/docs/build/html/topics/impala_real.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="real"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>REAL Data Type</title></head><body id="real"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="real"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>REAL Data Type</title></head><body id="real"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">REAL Data Type</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_refresh.html
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diff --git a/docs/build/html/topics/impala_refresh.html b/docs/build/html/topics/impala_refresh.html
index c3c775a..496ab57 100644
--- a/docs/build/html/topics/impala_refresh.html
+++ b/docs/build/html/topics/impala_refresh.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="refresh"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>REFRESH Statement</title></head><body id="refresh"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="refresh"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>REFRESH Statement</title></head><body id="refresh"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">REFRESH Statement</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_release_notes.html
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diff --git a/docs/build/html/topics/impala_release_notes.html b/docs/build/html/topics/impala_release_notes.html
index 830c51c..9a15417 100644
--- a/docs/build/html/topics/impala_release_notes.html
+++ b/docs/build/html/topics/impala_release_notes.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_relnotes.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_new_features.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_incompatible_changes.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_known_issues.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_fixed_issues.html"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="impala_release_notes"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Release Notes</title></head><body id="impala_release_notes"><
main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_new_features.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_incompatible_changes.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_known_issues.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_fixed_issues.html"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="impala_release_notes"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Release Notes</title></head><body id="impala_release_notes"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Impala Release Notes</h1>
@@ -10,7 +10,7 @@
<p class="p">
These release notes provide information on the <a class="xref" href="impala_new_features.html#new_features">new
features</a> and <a class="xref" href="impala_known_issues.html#known_issues">known issues and limitations</a> for
- Impala versions up to <span class="ph">Impala 2.8.x</span>. For users
+ Impala versions up to <span class="ph">Impala 2.12.x</span>. For users
upgrading from earlier Impala releases, or using Impala in combination with specific versions of other
software, <a class="xref" href="impala_incompatible_changes.html#incompatible_changes">Incompatible Changes and Limitations in Apache Impala</a> lists any changes to
file formats, SQL syntax, or software dependencies to take into account.
@@ -23,4 +23,4 @@
<p class="p toc"></p>
</div>
-<nav role="navigation" class="related-links"><ul class="ullinks"><li class="link ulchildlink"><strong><a href="../topics/impala_relnotes.html">Impala Release Notes</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_new_features.html">New Features in Apache Impala</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_incompatible_changes.html">Incompatible Changes and Limitations in Apache Impala</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_known_issues.html">Known Issues and Workarounds in Impala</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_fixed_issues.html">Fixed Issues in Apache Impala</a></strong><br></li></ul></nav></article></main></body></html>
\ No newline at end of file
+<nav role="navigation" class="related-links"><ul class="ullinks"><li class="link ulchildlink"><strong><a href="../topics/impala_new_features.html">New Features in Apache Impala</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_incompatible_changes.html">Incompatible Changes and Limitations in Apache Impala</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_known_issues.html">Known Issues and Workarounds in Impala</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_fixed_issues.html">Fixed Issues in Apache Impala</a></strong><br></li></ul></nav></article></main></body></html>
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_relnotes.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_relnotes.html b/docs/build/html/topics/impala_relnotes.html
index 1baf9d0..2387540 100644
--- a/docs/build/html/topics/impala_relnotes.html
+++ b/docs/build/html/topics/impala_relnotes.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_release_notes.html"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="relnotes"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Release Notes</title></head><body id="relnotes"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="relnotes"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Release Notes</title></head><body id="relnotes"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Impala Release Notes</h1>
@@ -10,7 +10,7 @@
<p class="p">
These release notes provide information on the <a class="xref" href="impala_new_features.html#new_features">new
features</a> and <a class="xref" href="impala_known_issues.html#known_issues">known issues and limitations</a> for
- Impala versions up to <span class="ph">Impala 2.8.x</span>. For users
+ Impala versions up to <span class="ph">Impala 2.12.x</span>. For users
upgrading from earlier Impala releases, or using Impala in combination with specific versions of other
software, <a class="xref" href="impala_incompatible_changes.html#incompatible_changes">Incompatible Changes and Limitations in Apache Impala</a> lists any changes to
file formats, SQL syntax, or software dependencies to take into account.
@@ -23,4 +23,4 @@
<p class="p toc"></p>
</div>
-<nav role="navigation" class="related-links"><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_release_notes.html">Impala Release Notes</a></div></div></nav></article></main></body></html>
\ No newline at end of file
+</article></main></body></html>
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_replica_preference.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_replica_preference.html b/docs/build/html/topics/impala_replica_preference.html
index 4a545b2..f875004 100644
--- a/docs/build/html/topics/impala_replica_preference.html
+++ b/docs/build/html/topics/impala_replica_preference.html
@@ -1,9 +1,11 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="replica_preference"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>REPLICA_PREFERENCE Query Option (Impala 2.7 or higher only)</title></head><body id="replica_preference"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="replica_preference"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>REPLICA_PREFERENCE Query Option (Impala 2.7 or higher only)</title></head><body id="replica_preference"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">REPLICA_PREFERENCE Query Option (<span class="keyword">Impala 2.7</span> or higher only)</h1>
+
+
<div class="body conbody">
@@ -13,21 +15,25 @@
</p>
<p class="p">
- The <code class="ph codeph">REPLICA_PREFERENCE</code> query option
- lets you spread the load more evenly if hotspots and bottlenecks persist, by allowing hosts to do local reads,
- or even remote reads, to retrieve the data for cached blocks if Impala can determine that it would be
- too expensive to do all such processing on a particular host.
+ The <code class="ph codeph">REPLICA_PREFERENCE</code> query option lets you distribute the work more
+ evenly if hotspots and bottlenecks persist. It causes the access cost of all replicas of a
+ data block to be considered equal to or worse than the configured value. This allows
+ Impala to schedule reads to suboptimal replicas (e.g. local in the presence of cached
+ ones) in order to distribute the work across more executor nodes.
</p>
<p class="p">
- <strong class="ph b">Type:</strong> numeric (0, 3, 5)
- or corresponding mnemonic strings (<code class="ph codeph">CACHE_LOCAL</code>, <code class="ph codeph">DISK_LOCAL</code>, <code class="ph codeph">REMOTE</code>).
- The gaps in the numeric sequence are to accomodate other intermediate
- values that might be added in the future.
+ Allowed values are: <code class="ph codeph">CACHE_LOCAL</code> (<code class="ph codeph">0</code>),
+ <code class="ph codeph">DISK_LOCAL</code> (<code class="ph codeph">2</code>), <code class="ph codeph">REMOTE</code>
+ (<code class="ph codeph">4</code>)
</p>
<p class="p">
- <strong class="ph b">Default:</strong> 0 (equivalent to <code class="ph codeph">CACHE_LOCAL</code>)
+ <strong class="ph b">Type:</strong> Enum
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Default:</strong> <code class="ph codeph">CACHE_LOCAL (0)</code>
</p>
<p class="p">
@@ -35,11 +41,28 @@
</p>
<p class="p">
+ <strong class="ph b">Usage Notes:</strong>
+ </p>
+
+ <p class="p">
+ By default Impala selects the best replica it can find in terms of access cost. The
+ preferred order is cached, local, and remote. With <code class="ph codeph">REPLICA_PREFERENCE</code>,
+ the preference of all replicas are capped at the selected value. For example, when
+ <code class="ph codeph">REPLICA_PREFERENCE</code> is set to <code class="ph codeph">DISK_LOCAL</code>, cached and
+ local replicas are treated with the equal preference. When set to
+ <code class="ph codeph">REMOTE</code>, all three types of replicas, cached, local, remote, are treated
+ with equal preference.
+ </p>
+
+ <p class="p">
<strong class="ph b">Related information:</strong>
</p>
+
<p class="p">
- <a class="xref" href="impala_perf_hdfs_caching.html#hdfs_caching">Using HDFS Caching with Impala (Impala 2.1 or higher only)</a>, <a class="xref" href="impala_schedule_random_replica.html#schedule_random_replica">SCHEDULE_RANDOM_REPLICA Query Option (Impala 2.5 or higher only)</a>
+ <a class="xref" href="impala_perf_hdfs_caching.html#hdfs_caching">Using HDFS Caching with Impala (Impala 2.1 or higher only)</a>,
+ <a class="xref" href="impala_schedule_random_replica.html#schedule_random_replica">SCHEDULE_RANDOM_REPLICA Query Option (Impala 2.5 or higher only)</a>
</p>
</div>
+
<nav role="navigation" class="related-links"><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_query_options.html">Query Options for the SET Statement</a></div></div></nav></article></main></body></html>
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_request_pool.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_request_pool.html b/docs/build/html/topics/impala_request_pool.html
index 49095ad..9f5f400 100644
--- a/docs/build/html/topics/impala_request_pool.html
+++ b/docs/build/html/topics/impala_request_pool.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="request_pool"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>REQUEST_POOL Query Option</title></head><body id="request_pool"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="request_pool"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>REQUEST_POOL Query Option</title></head><body id="request_pool"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">REQUEST_POOL Query Option</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_reservation_request_timeout.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_reservation_request_timeout.html b/docs/build/html/topics/impala_reservation_request_timeout.html
index 8e2eb18..2173267 100644
--- a/docs/build/html/topics/impala_reservation_request_timeout.html
+++ b/docs/build/html/topics/impala_reservation_request_timeout.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="reservation_request_timeout"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>RESERVATION_REQUEST_TIMEOUT Query Option</title></head><body id="reservation_request_timeout"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="reservation_request_timeout"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>RESERVATION_REQUEST_TIMEOUT Query Option</title></head><body id="reservation_request_timeout"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">RESERVATION_REQUEST_TIMEOUT Query Option</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_reserved_words.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_reserved_words.html b/docs/build/html/topics/impala_reserved_words.html
index 3d62f97..4f9a619 100644
--- a/docs/build/html/topics/impala_reserved_words.html
+++ b/docs/build/html/topics/impala_reserved_words.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="reserved_words"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Reserved Words</title></head><body id="reserved_words"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="reserved_words"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Reserved Words</title></head><body id="reserved_words"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Impala Reserved Words</h1>
@@ -165,6 +165,7 @@ real
refresh
regexp
rename
+<span class="ph">repeatable</span>
replace
<span class="ph">restrict</span>
returns
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_resource_management.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_resource_management.html b/docs/build/html/topics/impala_resource_management.html
index 99165ea..6749053 100644
--- a/docs/build/html/topics/impala_resource_management.html
+++ b/docs/build/html/topics/impala_resource_management.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_admin.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="resource_management"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Resource Management for Impala</title></head><body id="resource_management"><mai
n role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_admin.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="resource_management"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Resource Management for Impala</title></head><body id="resource_management"><mai
n role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Resource Management for Impala</h1>
[09/15] impala git commit: [DOCS] Add Impala docs from branch 2.x
Posted by mi...@apache.org.
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_insert.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_insert.html b/docs/build/html/topics/impala_insert.html
index 751c6cc..d81bcfb 100644
--- a/docs/build/html/topics/impala_insert.html
+++ b/docs/build/html/topics/impala_insert.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="insert"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>INSERT Statement</title></head><body id="insert"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="insert"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>INSERT Statement</title></head><body id="insert"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">INSERT Statement</h1>
@@ -19,7 +19,7 @@
</p>
<pre class="pre codeblock"><code>[<var class="keyword varname">with_clause</var>]
-INSERT { INTO | OVERWRITE } [TABLE] <var class="keyword varname">table_name</var>
+ INSERT <span class="ph">[<var class="keyword varname">hint_clause</var>]</span> { INTO | OVERWRITE } [TABLE] <var class="keyword varname">table_name</var>
[(<var class="keyword varname">column_list</var>)]
[ PARTITION (<var class="keyword varname">partition_clause</var>)]
{
@@ -163,32 +163,10 @@ hint_with_brackets ::= [SHUFFLE] | [NOSHUFFLE]
</li>
<li class="li">
- <p class="p">
- For a partitioned table, the optional <code class="ph codeph">PARTITION</code> clause identifies which partition or
- partitions the new values go into. If a partition key column is given a constant value such as
- <code class="ph codeph">PARTITION (year=2012)</code> or <code class="ph codeph">PARTITION (year=2012, month=2)</code>, all the
- inserted rows use those same values for those partition key columns and you omit any corresponding
- columns in the source table from the <code class="ph codeph">SELECT</code> list. This form is known as <span class="q">"static
- partitioning"</span>.
- </p>
- <p class="p">
- If a partition key column is mentioned but not assigned a value, such as in <code class="ph codeph">PARTITION (year,
- region)</code> (both columns unassigned) or <code class="ph codeph">PARTITION(year, region='CA')</code>
- (<code class="ph codeph">year</code> column unassigned), the unassigned columns are filled in with the final columns of
- the <code class="ph codeph">SELECT</code> list. In this case, the number of columns in the <code class="ph codeph">SELECT</code> list
- must equal the number of columns in the column permutation plus the number of partition key columns not
- assigned a constant value. This form is known as <span class="q">"dynamic partitioning"</span>.
- </p>
- <p class="p">
- See <a class="xref" href="impala_partitioning.html#partition_static_dynamic">Static and Dynamic Partitioning Clauses</a> for examples and performance
- characteristics of static and dynamic partitioned inserts.
- </p>
- </li>
-
- <li class="li">
- An optional hint clause immediately before the <code class="ph codeph">SELECT</code> keyword, to fine-tune the behavior
- when doing an <code class="ph codeph">INSERT ... SELECT</code> operation into partitioned Parquet tables. The hint
- keywords are <code class="ph codeph">[SHUFFLE]</code> and <code class="ph codeph">[NOSHUFFLE]</code>, including the square brackets.
+ An optional hint clause immediately either before the <code class="ph codeph">SELECT</code> keyword or after the
+ <code class="ph codeph">INSERT</code> keyword, to fine-tune the behavior when doing an <code class="ph codeph">INSERT ... SELECT</code>
+ operation into partitioned Parquet tables. The hint clause cannot be specified in multiple places.
+ The hint keywords are <code class="ph codeph">[SHUFFLE]</code> and <code class="ph codeph">[NOSHUFFLE]</code>, including the square brackets.
Inserting into partitioned Parquet tables can be a resource-intensive operation because it potentially
involves many files being written to HDFS simultaneously, and separate
<span class="ph">large</span> memory buffers being allocated to buffer the data for each
@@ -393,28 +371,6 @@ Remote error
Backend 0:SEQUENCE_FILE not implemented. </code></pre>
<p class="p">
- Inserting data into partitioned tables requires slightly different syntax that divides the partitioning
- columns from the others:
- </p>
-
-<pre class="pre codeblock"><code>create table t1 (i int) <strong class="ph b">partitioned by (x int, y string)</strong>;
--- Select an INT column from another table.
--- All inserted rows will have the same x and y values, as specified in the INSERT statement.
--- This technique of specifying all the partition key values is known as static partitioning.
-insert into t1 <strong class="ph b">partition(x=10, y='a')</strong> select c1 from some_other_table;
--- Select two INT columns from another table.
--- All inserted rows will have the same y value, as specified in the INSERT statement.
--- Values from c2 go into t1.x.
--- Any partitioning columns whose value is not specified are filled in
--- from the columns specified last in the SELECT list.
--- This technique of omitting some partition key values is known as dynamic partitioning.
-insert into t1 <strong class="ph b">partition(x, y='b')</strong> select c1, c2 from some_other_table;
--- Select an INT and a STRING column from another table.
--- All inserted rows will have the same x value, as specified in the INSERT statement.
--- Values from c3 go into t1.y.
-insert into t1 <strong class="ph b">partition(x=20, y)</strong> select c1, c3 from some_other_table;</code></pre>
-
- <p class="p">
The following examples show how you can copy the data in all the columns from one table to another, copy the
data from only some columns, or specify the columns in the select list in a different order than they
actually appear in the table:
@@ -441,42 +397,6 @@ insert into t2 (c2, c1) select c1, c2 from t1;
-- But the number and type of selected columns must match the columns mentioned in the () part.
alter table t2 replace columns (x int, y int);
insert into t2 (y) select c1 from t1;
-
--- For partitioned tables, all the partitioning columns must be mentioned in the () column list
--- or a PARTITION clause; these columns cannot be defaulted to NULL.
-create table pt1 (x int, y int) partitioned by (z int);
--- The values from c1 are copied into the column x in the new table,
--- all in the same partition based on a constant value for z.
--- The values of y in the new table are all NULL.
-insert into pt1 (x) partition (z=5) select c1 from t1;
--- Again we omit the values for column y so they are all NULL.
--- The inserted x values can go into different partitions, based on
--- the different values inserted into the partitioning column z.
-insert into pt1 (x,z) select x, z from t2;
-</code></pre>
-
- <p class="p">
- <code class="ph codeph">SELECT *</code> for a partitioned table requires that all partition key columns in the source table
- be declared as the last columns in the <code class="ph codeph">CREATE TABLE</code> statement. You still include a
- <code class="ph codeph">PARTITION BY</code> clause listing all the partition key columns. These partition columns are
- automatically mapped to the last columns from the <code class="ph codeph">SELECT *</code> list.
- </p>
-
-<pre class="pre codeblock"><code>create table source (x int, y int, year int, month int, day int);
-create table destination (x int, y int) partitioned by (year int, month int, day int);
-...load some data into the unpartitioned source table...
--- Insert a single partition of data.
--- The SELECT * means you cannot specify partition (year=2014, month, day).
-insert overwrite destination partition (year, month, day) select * from source where year=2014;
--- Insert the data for all year/month/day combinations.
-insert overwrite destination partition (year, month, day) select * from source;
-
--- If one of the partition columns is omitted from the source table,
--- then you can specify a specific value for that column in the PARTITION clause.
--- Here the source table holds only data from 2014, and so does not include a year column.
-create table source_2014 (x int, y int, month, day);
-...load some data into the unpartitioned source_2014 table...
-insert overwrite destination partition (year=2014, month, day) select * from source_2014;
</code></pre>
<p class="p">
@@ -825,6 +745,167 @@ Inserted 2 rows in 0.16s
</p>
</div>
</article>
+ <article class="topic concept nested1" aria-labelledby="ariaid-title3" id="insert__partition_insert">
+ <h2 class="title topictitle2" id="ariaid-title3">Inserting Into Partitioned Tables with PARTITION Clause</h2>
+ <div class="body conbody">
+ <p class="p">
+ For a partitioned table, the optional <code class="ph codeph">PARTITION</code> clause
+ identifies which partition or partitions the values are inserted
+ into.
+ </p>
+ <p class="p">
+ All examples in this section will use the table declared as below:
+ </p>
+<pre class="pre codeblock"><code>CREATE TABLE t1 (w INT) PARTITIONED BY (x INT, y STRING);</code></pre>
+ </div>
-
-</article></main></body></html>
\ No newline at end of file
+ <article class="topic concept nested2" aria-labelledby="ariaid-title4" id="partition_insert__static_partition_insert">
+ <h3 class="title topictitle3" id="ariaid-title4">Static Partition Inserts</h3>
+ <div class="body conbody">
+ <p class="p">
+ In a static partition insert where a partition key column is given a
+ constant value, such as <code class="ph codeph">PARTITION</code>
+ <code class="ph codeph">(year=2012, month=2)</code>, the rows are inserted with the
+ same values specified for those partition key columns.
+ </p>
+ <p class="p">
+ The number of columns in the <code class="ph codeph">SELECT</code> list must equal
+ the number of columns in the column permutation.
+ </p>
+ <p class="p">
+ The <code class="ph codeph">PARTITION</code> clause must be used for static
+ partitioning inserts.
+ </p>
+ <p class="p">
+ Example:
+ </p>
+ <div class="p">
+ The following statement will insert the
+ <code class="ph codeph">some_other_table.c1</code> values for the
+ <code class="ph codeph">w</code> column, and all the rows inserted will have the
+ same <code class="ph codeph">x</code> value of <code class="ph codeph">10</code>, and the same
+ <code class="ph codeph">y</code> value of
+ <code class="ph codeph">‘a’</code>.<pre class="pre codeblock"><code>INSERT INTO t1 PARTITION (x=10, y='a')
+ SELECT c1 FROM some_other_table;</code></pre>
+ </div>
+ </div>
+ </article>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title5" id="partition_insert__dynamic_partition_insert">
+ <h3 class="title topictitle3" id="ariaid-title5">Dynamic Partition Inserts</h3>
+ <div class="body conbody">
+ <p class="p">
+ In a dynamic partition insert where a partition key
+ column is in the <code class="ph codeph">INSERT</code> statement but not assigned a
+ value, such as in <code class="ph codeph">PARTITION (year, region)</code>(both
+ columns unassigned) or <code class="ph codeph">PARTITION(year, region='CA')</code>
+ (<code class="ph codeph">year</code> column unassigned), the unassigned columns
+ are filled in with the final columns of the <code class="ph codeph">SELECT</code> or
+ <code class="ph codeph">VALUES</code> clause. In this case, the number of columns
+ in the <code class="ph codeph">SELECT</code> list must equal the number of columns
+ in the column permutation plus the number of partition key columns not
+ assigned a constant value.
+ </p>
+ <p class="p">
+ See <a class="xref" href="https://www.cloudera.com/documentation/enterprise/latest/topics/impala_partitioning.html#partition_static_dynamic" target="_blank"><u class="ph u">Static and Dynamic Partitioning
+ Clauses</u></a> for examples and performance characteristics
+ of static and dynamic partitioned inserts.
+ </p>
+ <p class="p">
+ The following rules apply to dynamic partition
+ inserts.
+ </p>
+ <ul class="ul">
+ <li class="li">
+ <p class="p">
+ The columns are bound in the order they appear in the
+ <code class="ph codeph">INSERT</code> statement.
+ </p>
+ <p class="p">
+ The table below shows the values inserted with the
+ <code class="ph codeph">INSERT</code> statements of different column
+ orders.
+ </p>
+ </li>
+ </ul>
+ <table class="table frame-all" id="dynamic_partition_insert__table_vyx_dp3_ldb"><caption></caption><colgroup><col><col><col><col></colgroup><tbody class="tbody">
+ <tr class="row">
+ <td class="entry cellrowborder align-left colsep-1 rowsep-1"></td>
+ <td class="entry cellrowborder align-left colsep-1 rowsep-1">Column <code class="ph codeph">w</code> Value</td>
+ <td class="entry cellrowborder align-left colsep-1 rowsep-1">Column <code class="ph codeph">x</code> Value</td>
+ <td class="entry cellrowborder align-left colsep-1 rowsep-1">Column <code class="ph codeph">y</code> Value</td>
+ </tr>
+ <tr class="row">
+ <td class="entry cellrowborder align-left colsep-1 rowsep-1"><code class="ph codeph">INSERT INTO t1 (w, x, y) VALUES (1, 2,
+ 'c');</code></td>
+ <td class="entry cellrowborder align-left colsep-1 rowsep-1"><code class="ph codeph">1</code></td>
+ <td class="entry cellrowborder align-left colsep-1 rowsep-1"><code class="ph codeph">2</code></td>
+ <td class="entry cellrowborder align-left colsep-1 rowsep-1"><code class="ph codeph">‘c’</code></td>
+ </tr>
+ <tr class="row">
+ <td class="entry cellrowborder align-left colsep-1 rowsep-1"><code class="ph codeph">INSERT INTO t1 (x,w) PARTITION (y) VALUES (1,
+ 2, 'c');</code></td>
+ <td class="entry cellrowborder align-left colsep-1 rowsep-1"><code class="ph codeph">2</code></td>
+ <td class="entry cellrowborder align-left colsep-1 rowsep-1"><code class="ph codeph">1</code></td>
+ <td class="entry cellrowborder align-left colsep-1 rowsep-1"><code class="ph codeph">‘c’</code></td>
+ </tr>
+ </tbody></table>
+ <ul class="ul">
+ <li class="li">
+ When a partition clause is specified but the non-partition
+ columns are not specified in the <code class="ph codeph">INSERT</code> statement,
+ as in the first example below, the non-partition columns are treated
+ as though they had been specified before the
+ <code class="ph codeph">PARTITION</code> clause in the SQL.
+ <p class="p">
+ Example: These
+ three statements are equivalent, inserting <code class="ph codeph">1</code> to
+ <code class="ph codeph">w</code>, <code class="ph codeph">2</code> to <code class="ph codeph">x</code>,
+ and <code class="ph codeph">‘c’</code> to <code class="ph codeph">y</code>
+ columns.
+ </p>
+<pre class="pre codeblock"><code>INSERT INTO t1 PARTITION (x,y) VALUES (1, 2, ‘c’);
+INSERT INTO t1 (w) PARTITION (x, y) VALUES (1, 2, ‘c’);
+INSERT INTO t1 PARTITION (x, y='c') VALUES (1, 2);</code></pre>
+ </li>
+ <li class="li">
+ The <code class="ph codeph">PARTITION</code> clause is not required for
+ dynamic partition, but all the partition columns must be explicitly
+ present in the <code class="ph codeph">INSERT</code> statement in the column list
+ or in the <code class="ph codeph">PARTITION</code> clause. The partition columns
+ cannot be defaulted to <code class="ph codeph">NULL</code>.
+ <p class="p">
+ Example:
+ </p>
+ <p class="p">The following statements are valid because the partition
+ columns, <code class="ph codeph">x</code> and <code class="ph codeph">y</code>, are present in
+ the <code class="ph codeph">INSERT</code> statements, either in the
+ <code class="ph codeph">PARTITION</code> clause or in the column
+ list.
+ </p>
+<pre class="pre codeblock"><code>INSERT INTO t1 PARTITION (x,y) VALUES (1, 2, ‘c’);
+INSERT INTO t1 (w, x) PARTITION (y) VALUES (1, 2, ‘c’);</code></pre>
+ <p class="p">
+ The following statement is not valid for the partitioned table as
+ defined above because the partition columns, <code class="ph codeph">x</code>
+ and <code class="ph codeph">y</code>, are not present in the
+ <code class="ph codeph">INSERT</code> statement.
+ </p>
+<pre class="pre codeblock"><code>INSERT INTO t1 VALUES (1, 2, 'c');</code></pre>
+ </li>
+ <li class="li">
+ If partition columns do not exist in the source table, you can
+ specify a specific value for that column in the
+ <code class="ph codeph">PARTITION</code> clause.
+ <p class="p">
+ Example: The <code class="ph codeph">source</code> table only contains the column
+ <code class="ph codeph">w</code> and <code class="ph codeph">y</code>. The value,
+ <code class="ph codeph">20</code>, specified in the <code class="ph codeph">PARTITION</code>
+ clause, is inserted into the <code class="ph codeph">x</code> column.
+ </p>
+<pre class="pre codeblock"><code>INSERT INTO t1 PARTITION (x=20, y) SELECT * FROM source;</code></pre>
+ </li>
+ </ul>
+ </div>
+ </article>
+ </article>
+ </article></main></body></html>
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_install.html
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diff --git a/docs/build/html/topics/impala_install.html b/docs/build/html/topics/impala_install.html
index a37606f..05a00c4 100644
--- a/docs/build/html/topics/impala_install.html
+++ b/docs/build/html/topics/impala_install.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="install"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Installing Impala</title></head><body id="install"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="install"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Installing Impala</title></head><body id="install"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1"><span class="ph">Installing Impala</span></h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_int.html
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diff --git a/docs/build/html/topics/impala_int.html b/docs/build/html/topics/impala_int.html
index 232a02b..ee10109 100644
--- a/docs/build/html/topics/impala_int.html
+++ b/docs/build/html/topics/impala_int.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="int"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>INT Data Type</title></head><body id="int"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="int"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>INT Data Type</title></head><body id="int"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">INT Data Type</h1>
@@ -31,11 +31,13 @@
floating-point type (<code class="ph codeph">FLOAT</code> or <code class="ph codeph">DOUBLE</code>) automatically. Use
<code class="ph codeph">CAST()</code> to convert to <code class="ph codeph">TINYINT</code>, <code class="ph codeph">SMALLINT</code>,
<code class="ph codeph">STRING</code>, or <code class="ph codeph">TIMESTAMP</code>.
- <span class="ph">Casting an integer or floating-point value <code class="ph codeph">N</code> to
+ <span class="ph">
+ Casting an integer or floating-point value <code class="ph codeph">N</code> to
<code class="ph codeph">TIMESTAMP</code> produces a value that is <code class="ph codeph">N</code> seconds past the start of the epoch
date (January 1, 1970). By default, the result value represents a date and time in the UTC time zone.
- If the setting <code class="ph codeph">-use_local_tz_for_unix_timestamp_conversions=true</code> is in effect,
- the resulting <code class="ph codeph">TIMESTAMP</code> represents a date and time in the local time zone.</span>
+ If the setting <code class="ph codeph">--use_local_tz_for_unix_timestamp_conversions=true</code> is in effect,
+ the resulting <code class="ph codeph">TIMESTAMP</code> represents a date and time in the local time zone.
+ </span>
</p>
<p class="p">
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_intro.html
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diff --git a/docs/build/html/topics/impala_intro.html b/docs/build/html/topics/impala_intro.html
index 56d9880..62e5c50 100644
--- a/docs/build/html/topics/impala_intro.html
+++ b/docs/build/html/topics/impala_intro.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="intro"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Introducing Apache Impala</title></head><body id="intro"><main role="main"><article role="article" aria-labelledby="intro__impala">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="intro"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Introducing Apache Impala</title></head><body id="intro"><main role="main"><article role="article" aria-labelledby="intro__impala">
<h1 class="title topictitle1" id="intro__impala"><span class="ph">Introducing Apache Impala</span></h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_invalidate_metadata.html
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diff --git a/docs/build/html/topics/impala_invalidate_metadata.html b/docs/build/html/topics/impala_invalidate_metadata.html
index 701bfeb..9665c03 100644
--- a/docs/build/html/topics/impala_invalidate_metadata.html
+++ b/docs/build/html/topics/impala_invalidate_metadata.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="invalidate_metadata"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>INVALIDATE METADATA Statement</title></head><body id="invalidate_metadata"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="invalidate_metadata"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>INVALIDATE METADATA Statement</title></head><body id="invalidate_metadata"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">INVALIDATE METADATA Statement</h1>
@@ -196,11 +196,11 @@
By default, the <code class="ph codeph">INVALIDATE METADATA</code> command checks HDFS permissions of the underlying data
files and directories, caching this information so that a statement can be cancelled immediately if for
example the <code class="ph codeph">impala</code> user does not have permission to write to the data directory for the
- table. (This checking does not apply if you have set the <span class="keyword cmdname">catalogd</span> configuration option
- <code class="ph codeph">--load_catalog_in_background=false</code>.) Impala reports any lack of write permissions as an
- <code class="ph codeph">INFO</code> message in the log file, in case that represents an oversight. If you change HDFS
- permissions to make data readable or writeable by the Impala user, issue another <code class="ph codeph">INVALIDATE
- METADATA</code> to make Impala aware of the change.
+ table. (This checking does not apply when the <span class="keyword cmdname">catalogd</span> configuration option
+ <code class="ph codeph">--load_catalog_in_background</code> is set to <code class="ph codeph">false</code>, which it is by default.)
+ Impala reports any lack of write permissions as an <code class="ph codeph">INFO</code> message in the log file, in case
+ that represents an oversight. If you change HDFS permissions to make data readable or writeable by the Impala
+ user, issue another <code class="ph codeph">INVALIDATE METADATA</code> to make Impala aware of the change.
</p>
<p class="p">
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_isilon.html
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diff --git a/docs/build/html/topics/impala_isilon.html b/docs/build/html/topics/impala_isilon.html
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+++ b/docs/build/html/topics/impala_isilon.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="impala_isilon"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Using Impala with Isilon Storage</title></head><body id="impala_isilon"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="impala_isilon"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Using Impala with Isilon Storage</title></head><body id="impala_isilon"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Using Impala with Isilon Storage</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_jdbc.html
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diff --git a/docs/build/html/topics/impala_jdbc.html b/docs/build/html/topics/impala_jdbc.html
index fec34cf..7da7bc3 100644
--- a/docs/build/html/topics/impala_jdbc.html
+++ b/docs/build/html/topics/impala_jdbc.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_config.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="impala_jdbc"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Configuring Impala to Work with JDBC</title></head><body id="impala_jdbc"><main role="main"><article role="article" aria-labelledby="impala_jdbc__jdbc">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_config.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="impala_jdbc"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Configuring Impala to Work with JDBC</title></head><body id="impala_jdbc"><main role="main"><article role="article" aria-labelledby="impala_jdbc__jdbc">
<h1 class="title topictitle1" id="impala_jdbc__jdbc">Configuring Impala to Work with JDBC</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_joins.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_joins.html b/docs/build/html/topics/impala_joins.html
index 76a333a..335fac9 100644
--- a/docs/build/html/topics/impala_joins.html
+++ b/docs/build/html/topics/impala_joins.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_select.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="joins"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Joins in Impala SELECT Statements</title></head><body id="joins"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_select.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="joins"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Joins in Impala SELECT Statements</title></head><body id="joins"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Joins in Impala SELECT Statements</h1>
@@ -463,7 +463,7 @@ Returned 1 row(s) in 1.00s</code></pre>
The two categories of joins in Impala are known as <strong class="ph b">partitioned joins</strong> and <strong class="ph b">broadcast joins</strong>. If
inaccurate table or column statistics, or some quirk of the data distribution, causes Impala to choose the
wrong mechanism for a particular join, consider using query hints as a temporary workaround. For details, see
- <a class="xref" href="impala_hints.html#hints">Query Hints in Impala SELECT Statements</a>.
+ <a class="xref" href="impala_hints.html#hints">Optimizer Hints</a>.
</p>
<p class="p">
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_kerberos.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_kerberos.html b/docs/build/html/topics/impala_kerberos.html
index 385d89d..0a80d3c 100644
--- a/docs/build/html/topics/impala_kerberos.html
+++ b/docs/build/html/topics/impala_kerberos.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_authentication.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala
2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="kerberos"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Enabling Kerberos Authentication for Impala</title></head><body id="kerberos"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_authentication.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala
2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="kerberos"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Enabling Kerberos Authentication for Impala</title></head><body id="kerberos"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Enabling Kerberos Authentication for Impala</h1>
[11/15] impala git commit: [DOCS] Add Impala docs from branch 2.x
Posted by mi...@apache.org.
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_fixed_issues.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_fixed_issues.html b/docs/build/html/topics/impala_fixed_issues.html
index 5b43b21..c8298d1 100644
--- a/docs/build/html/topics/impala_fixed_issues.html
+++ b/docs/build/html/topics/impala_fixed_issues.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_release_notes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="fixed_issues"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Fixed Issues in Apache Impala</title></head><body id="fixed_issues"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_release_notes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="fixed_issues"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Fixed Issues in Apache Impala</title></head><body id="fixed_issues"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1"><span class="ph">Fixed Issues in Apache Impala</span></h1>
@@ -20,9 +20,25 @@
- <nav role="navigation" class="related-links"><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_release_notes.html">Impala Release Notes</a></div></div></nav><article class="topic concept nested1" aria-labelledby="ariaid-title2" id="fixed_issues__fixed_issues_2_11_0">
+ <nav role="navigation" class="related-links"><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_release_notes.html">Impala Release Notes</a></div></div></nav><article class="topic concept nested1" aria-labelledby="ariaid-title2" id="fixed_issues__fixed_issues_2_12_0">
- <h2 class="title topictitle2" id="ariaid-title2">Issues Fixed in <span class="keyword">Impala 2.1.10</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title2">Issues Fixed in <span class="keyword">Impala 2.12</span></h2>
+
+ <div class="body conbody">
+
+ <p class="p">
+ For the full list of issues closed in this release, including bug fixes,
+ see the <a class="xref" href="https://impala.apache.org/docs/changelog-2.12.html" target="_blank">changelog for <span class="keyword">Impala 2.12</span></a>.
+ </p>
+
+ </div>
+ </article>
+
+
+
+ <article class="topic concept nested1" aria-labelledby="ariaid-title3" id="fixed_issues__fixed_issues_2_11_0">
+
+ <h2 class="title topictitle2" id="ariaid-title3">Issues Fixed in <span class="keyword">Impala 2.11</span></h2>
<div class="body conbody">
@@ -36,9 +52,9 @@
- <article class="topic concept nested1" aria-labelledby="ariaid-title3" id="fixed_issues__fixed_issues_2100">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title4" id="fixed_issues__fixed_issues_2100">
- <h2 class="title topictitle2" id="ariaid-title3">Issues Fixed in <span class="keyword">Impala 2.10.0</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title4">Issues Fixed in <span class="keyword">Impala 2.10</span></h2>
<div class="body conbody">
@@ -52,9 +68,9 @@
- <article class="topic concept nested1" aria-labelledby="ariaid-title4" id="fixed_issues__fixed_issues_290">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title5" id="fixed_issues__fixed_issues_290">
- <h2 class="title topictitle2" id="ariaid-title4">Issues Fixed in <span class="keyword">Impala 2.9.0</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title5">Issues Fixed in <span class="keyword">Impala 2.9.0</span></h2>
<div class="body conbody">
@@ -68,9 +84,9 @@
- <article class="topic concept nested1" aria-labelledby="ariaid-title5" id="fixed_issues__fixed_issues_280">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title6" id="fixed_issues__fixed_issues_280">
- <h2 class="title topictitle2" id="ariaid-title5">Issues Fixed in <span class="keyword">Impala 2.8.0</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title6">Issues Fixed in <span class="keyword">Impala 2.8.0</span></h2>
<div class="body conbody">
@@ -84,9 +100,9 @@
- <article class="topic concept nested1" aria-labelledby="ariaid-title6" id="fixed_issues__fixed_issues_270">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title7" id="fixed_issues__fixed_issues_270">
- <h2 class="title topictitle2" id="ariaid-title6">Issues Fixed in <span class="keyword">Impala 2.7.0</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title7">Issues Fixed in <span class="keyword">Impala 2.7.0</span></h2>
<div class="body conbody">
@@ -101,23 +117,23 @@
- <article class="topic concept nested1" aria-labelledby="ariaid-title7" id="fixed_issues__fixed_issues_263">
- <h2 class="title topictitle2" id="ariaid-title7">Issues Fixed in <span class="keyword">Impala 2.6.3</span></h2>
+ <article class="topic concept nested1" aria-labelledby="ariaid-title8" id="fixed_issues__fixed_issues_263">
+ <h2 class="title topictitle2" id="ariaid-title8">Issues Fixed in <span class="keyword">Impala 2.6.3</span></h2>
<div class="body conbody">
<p class="p"></p>
</div>
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title8" id="fixed_issues__fixed_issues_262">
- <h2 class="title topictitle2" id="ariaid-title8">Issues Fixed in <span class="keyword">Impala 2.6.2</span></h2>
+ <article class="topic concept nested1" aria-labelledby="ariaid-title9" id="fixed_issues__fixed_issues_262">
+ <h2 class="title topictitle2" id="ariaid-title9">Issues Fixed in <span class="keyword">Impala 2.6.2</span></h2>
<div class="body conbody">
<p class="p"></p>
</div>
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title9" id="fixed_issues__fixed_issues_260">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title10" id="fixed_issues__fixed_issues_260">
- <h2 class="title topictitle2" id="ariaid-title9">Issues Fixed in <span class="keyword">Impala 2.6.0</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title10">Issues Fixed in <span class="keyword">Impala 2.6.0</span></h2>
<div class="body conbody">
@@ -130,8 +146,8 @@
</div>
- <article class="topic concept nested2" aria-labelledby="ariaid-title10" id="fixed_issues_260__IMPALA-3385">
- <h3 class="title topictitle3" id="ariaid-title10">RuntimeState::error_log_ crashes</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title11" id="fixed_issues_260__IMPALA-3385">
+ <h3 class="title topictitle3" id="ariaid-title11">RuntimeState::error_log_ crashes</h3>
<div class="body conbody">
<p class="p">
A crash could occur, with stack trace pointing to <code class="ph codeph">impala::RuntimeState::ErrorLog</code>.
@@ -141,8 +157,8 @@
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title11" id="fixed_issues_260__IMPALA-3378">
- <h3 class="title topictitle3" id="ariaid-title11">HiveUdfCall::Open() produces unsynchronized access to JniUtil::global_refs_ vector</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title12" id="fixed_issues_260__IMPALA-3378">
+ <h3 class="title topictitle3" id="ariaid-title12">HiveUdfCall::Open() produces unsynchronized access to JniUtil::global_refs_ vector</h3>
<div class="body conbody">
<p class="p">
A crash could occur because of contention between multiple calls to Java UDFs.
@@ -152,8 +168,8 @@
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title12" id="fixed_issues_260__IMPALA-3379">
- <h3 class="title topictitle3" id="ariaid-title12">HBaseTableWriter::CreatePutList() produces unsynchronized access to JniUtil::global_refs_ vector</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title13" id="fixed_issues_260__IMPALA-3379">
+ <h3 class="title topictitle3" id="ariaid-title13">HBaseTableWriter::CreatePutList() produces unsynchronized access to JniUtil::global_refs_ vector</h3>
<div class="body conbody">
<p class="p">
A crash could occur because of contention between multiple concurrent statements writing to HBase.
@@ -163,8 +179,8 @@
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title13" id="fixed_issues_260__IMPALA-3317">
- <h3 class="title topictitle3" id="ariaid-title13">Stress test failure: sorter.cc:745] Check failed: i == 0 (1 vs. 0) </h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title14" id="fixed_issues_260__IMPALA-3317">
+ <h3 class="title topictitle3" id="ariaid-title14">Stress test failure: sorter.cc:745] Check failed: i == 0 (1 vs. 0) </h3>
<div class="body conbody">
<p class="p">
A crash or wrong results could occur if the spill-to-disk mechanism encountered a zero-length string at
@@ -175,8 +191,8 @@
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title14" id="fixed_issues_260__IMPALA-3311">
- <h3 class="title topictitle3" id="ariaid-title14">String data coming out of agg can be corrupted by blocking operators</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title15" id="fixed_issues_260__IMPALA-3311">
+ <h3 class="title topictitle3" id="ariaid-title15">String data coming out of agg can be corrupted by blocking operators</h3>
<div class="body conbody">
<p class="p">
If a query plan contains an aggregation node producing string values anywhere within a subplan
@@ -188,8 +204,8 @@
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title15" id="fixed_issues_260__IMPALA-3269">
- <h3 class="title topictitle3" id="ariaid-title15">CTAS with subquery throws AuthzException</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title16" id="fixed_issues_260__IMPALA-3269">
+ <h3 class="title topictitle3" id="ariaid-title16">CTAS with subquery throws AuthzException</h3>
<div class="body conbody">
<p class="p">
A <code class="ph codeph">CREATE TABLE AS SELECT</code> operation could fail with an authorization error,
@@ -200,8 +216,8 @@
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title16" id="fixed_issues_260__IMPALA-3237">
- <h3 class="title topictitle3" id="ariaid-title16">Crash on inserting into table with binary and parquet</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title17" id="fixed_issues_260__IMPALA-3237">
+ <h3 class="title topictitle3" id="ariaid-title17">Crash on inserting into table with binary and parquet</h3>
<div class="body conbody">
<p class="p">
Impala incorrectly allowed <code class="ph codeph">BINARY</code> to be specified as a column type,
@@ -212,8 +228,8 @@
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title17" id="fixed_issues_260__IMPALA-3105">
- <h3 class="title topictitle3" id="ariaid-title17">RowBatch::MaxTupleBufferSize() calculation incorrect, may lead to memory corruption</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title18" id="fixed_issues_260__IMPALA-3105">
+ <h3 class="title topictitle3" id="ariaid-title18">RowBatch::MaxTupleBufferSize() calculation incorrect, may lead to memory corruption</h3>
<div class="body conbody">
<p class="p">
A crash could occur while querying tables with very large rows, for example wide tables with many
@@ -225,8 +241,8 @@
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title18" id="fixed_issues_260__IMPALA-3494">
- <h3 class="title topictitle3" id="ariaid-title18">Thrift buffer overflows when serialize more than 3355443200 bytes in impala</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title19" id="fixed_issues_260__IMPALA-3494">
+ <h3 class="title topictitle3" id="ariaid-title19">Thrift buffer overflows when serialize more than 3355443200 bytes in impala</h3>
<div class="body conbody">
<p class="p">
A very large memory allocation within the <span class="keyword cmdname">catalogd</span> daemon could exceed an internal Thrift limit,
@@ -237,8 +253,8 @@
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title19" id="fixed_issues_260__IMPALA-3314">
- <h3 class="title topictitle3" id="ariaid-title19">Altering table partition's storage format is not working and crashing the daemon</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title20" id="fixed_issues_260__IMPALA-3314">
+ <h3 class="title topictitle3" id="ariaid-title20">Altering table partition's storage format is not working and crashing the daemon</h3>
<div class="body conbody">
<p class="p">
If a partitioned table used a file format other than Avro, and the file format of an individual partition
@@ -249,8 +265,8 @@
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title20" id="fixed_issues_260__IMPALA-3798">
- <h3 class="title topictitle3" id="ariaid-title20">Race condition may cause scanners to spin with runtime filters on Avro or Sequence files</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title21" id="fixed_issues_260__IMPALA-3798">
+ <h3 class="title topictitle3" id="ariaid-title21">Race condition may cause scanners to spin with runtime filters on Avro or Sequence files</h3>
<div class="body conbody">
<p class="p">
A timing problem during runtime filter processing could cause queries against Avro or SequenceFile tables
@@ -264,23 +280,23 @@
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title21" id="fixed_issues__fixed_issues_254">
- <h2 class="title topictitle2" id="ariaid-title21">Issues Fixed in <span class="keyword">Impala 2.5.4</span></h2>
+ <article class="topic concept nested1" aria-labelledby="ariaid-title22" id="fixed_issues__fixed_issues_254">
+ <h2 class="title topictitle2" id="ariaid-title22">Issues Fixed in <span class="keyword">Impala 2.5.4</span></h2>
<div class="body conbody">
<p class="p"></p>
</div>
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title22" id="fixed_issues__fixed_issues_252">
- <h2 class="title topictitle2" id="ariaid-title22">Issues Fixed in <span class="keyword">Impala 2.5.2</span></h2>
+ <article class="topic concept nested1" aria-labelledby="ariaid-title23" id="fixed_issues__fixed_issues_252">
+ <h2 class="title topictitle2" id="ariaid-title23">Issues Fixed in <span class="keyword">Impala 2.5.2</span></h2>
<div class="body conbody">
<p class="p"></p>
</div>
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title23" id="fixed_issues__fixed_issues_251">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title24" id="fixed_issues__fixed_issues_251">
- <h2 class="title topictitle2" id="ariaid-title23">Issues Fixed in <span class="keyword">Impala 2.5.1</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title24">Issues Fixed in <span class="keyword">Impala 2.5.1</span></h2>
<div class="body conbody">
<p class="p"></p>
@@ -288,9 +304,9 @@
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title24" id="fixed_issues__fixed_issues_250">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title25" id="fixed_issues__fixed_issues_250">
- <h2 class="title topictitle2" id="ariaid-title24">Issues Fixed in <span class="keyword">Impala 2.5.0</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title25">Issues Fixed in <span class="keyword">Impala 2.5.0</span></h2>
<div class="body conbody">
@@ -302,16 +318,16 @@
</div>
- <article class="topic concept nested2" aria-labelledby="ariaid-title25" id="fixed_issues_250__IMPALA-2683">
- <h3 class="title topictitle3" id="ariaid-title25">Stress test hit assert in LLVM: external function could not be resolved</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title26" id="fixed_issues_250__IMPALA-2683">
+ <h3 class="title topictitle3" id="ariaid-title26">Stress test hit assert in LLVM: external function could not be resolved</h3>
<div class="body conbody">
<p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-2683" target="_blank">IMPALA-2683</a></p>
<p class="p">The stress test was running a build with the TPC-H, TPC-DS, and TPC-H nested queries with scale factor 3.</p>
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title26" id="fixed_issues_250__IMPALA-2365">
- <h3 class="title topictitle3" id="ariaid-title26">Impalad is crashing if udf jar is not available in hdfs location for first time</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title27" id="fixed_issues_250__IMPALA-2365">
+ <h3 class="title topictitle3" id="ariaid-title27">Impalad is crashing if udf jar is not available in hdfs location for first time</h3>
<div class="body conbody">
<p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-2365" target="_blank">IMPALA-2365</a></p>
<p class="p">
@@ -321,8 +337,8 @@
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title27" id="fixed_issues_250__IMPALA-2535-570">
- <h3 class="title topictitle3" id="ariaid-title27">PAGG hits mem_limit when switching to I/O buffers</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title28" id="fixed_issues_250__IMPALA-2535-570">
+ <h3 class="title topictitle3" id="ariaid-title28">PAGG hits mem_limit when switching to I/O buffers</h3>
<div class="body conbody">
<p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-2535" target="_blank">IMPALA-2535</a></p>
<p class="p">
@@ -335,8 +351,8 @@
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title28" id="fixed_issues_250__IMPALA-2643-570">
- <h3 class="title topictitle3" id="ariaid-title28">Prevent migrating incorrectly inferred identity predicates into inline views</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title29" id="fixed_issues_250__IMPALA-2643-570">
+ <h3 class="title topictitle3" id="ariaid-title29">Prevent migrating incorrectly inferred identity predicates into inline views</h3>
<div class="body conbody">
<p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-2643" target="_blank">IMPALA-2643</a></p>
<p class="p">
@@ -348,8 +364,8 @@
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title29" id="fixed_issues_250__IMPALA-1459-570">
- <h3 class="title topictitle3" id="ariaid-title29">Fix migration/assignment of On-clause predicates inside inline views</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title30" id="fixed_issues_250__IMPALA-1459-570">
+ <h3 class="title topictitle3" id="ariaid-title30">Fix migration/assignment of On-clause predicates inside inline views</h3>
<div class="body conbody">
<p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-1459" target="_blank">IMPALA-1459</a></p>
<p class="p">
@@ -372,8 +388,8 @@
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title30" id="fixed_issues_250__IMPALA-2093">
- <h3 class="title topictitle3" id="ariaid-title30">Wrong plan of NOT IN aggregate subquery when a constant is used in subquery predicate</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title31" id="fixed_issues_250__IMPALA-2093">
+ <h3 class="title topictitle3" id="ariaid-title31">Wrong plan of NOT IN aggregate subquery when a constant is used in subquery predicate</h3>
<div class="body conbody">
<p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-2093" target="_blank">IMPALA-2093</a></p>
<p class="p">
@@ -387,8 +403,8 @@ select * from alltypestiny t1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title31" id="fixed_issues_250__IMPALA-2940">
- <h3 class="title topictitle3" id="ariaid-title31">Parquet DictDecoders accumulate throughout query</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title32" id="fixed_issues_250__IMPALA-2940">
+ <h3 class="title topictitle3" id="ariaid-title32">Parquet DictDecoders accumulate throughout query</h3>
<div class="body conbody">
<p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-2940" target="_blank">IMPALA-2940</a></p>
<p class="p">
@@ -397,16 +413,16 @@ select * from alltypestiny t1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title32" id="fixed_issues_250__IMPALA-3056">
- <h3 class="title topictitle3" id="ariaid-title32">Planner doesn't set the has_local_target field correctly</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title33" id="fixed_issues_250__IMPALA-3056">
+ <h3 class="title topictitle3" id="ariaid-title33">Planner doesn't set the has_local_target field correctly</h3>
<div class="body conbody">
<p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-3056" target="_blank">IMPALA-3056</a></p>
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title33" id="fixed_issues_250__IMPALA-2742">
- <h3 class="title topictitle3" id="ariaid-title33">MemPool allocation growth behavior</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title34" id="fixed_issues_250__IMPALA-2742">
+ <h3 class="title topictitle3" id="ariaid-title34">MemPool allocation growth behavior</h3>
<div class="body conbody">
<p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-2742" target="_blank">IMPALA-2742</a></p>
<p class="p">
@@ -418,8 +434,8 @@ select * from alltypestiny t1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title34" id="fixed_issues_250__IMPALA-3035">
- <h3 class="title topictitle3" id="ariaid-title34">Drop partition operations don't follow the catalog's locking protocol</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title35" id="fixed_issues_250__IMPALA-3035">
+ <h3 class="title topictitle3" id="ariaid-title35">Drop partition operations don't follow the catalog's locking protocol</h3>
<div class="body conbody">
<p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-3035" target="_blank">IMPALA-3035</a></p>
<p class="p">
@@ -431,8 +447,8 @@ select * from alltypestiny t1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title35" id="fixed_issues_250__IMPALA-2215">
- <h3 class="title topictitle3" id="ariaid-title35">HAVING clause without aggregation not applied properly</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title36" id="fixed_issues_250__IMPALA-2215">
+ <h3 class="title topictitle3" id="ariaid-title36">HAVING clause without aggregation not applied properly</h3>
<div class="body conbody">
<p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-2215" target="_blank">IMPALA-2215</a></p>
<p class="p">
@@ -446,8 +462,8 @@ select case when 1=1 then 'didit' end as c1 from (select 1 as one) a having 1!=1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title36" id="fixed_issues_250__IMPALA-2914">
- <h3 class="title topictitle3" id="ariaid-title36">Hit DCHECK Check failed: HasDateOrTime()</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title37" id="fixed_issues_250__IMPALA-2914">
+ <h3 class="title topictitle3" id="ariaid-title37">Hit DCHECK Check failed: HasDateOrTime()</h3>
<div class="body conbody">
<p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-2914" target="_blank">IMPALA-2914</a></p>
<p class="p">
@@ -457,8 +473,8 @@ select case when 1=1 then 'didit' end as c1 from (select 1 as one) a having 1!=1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title37" id="fixed_issues_250__IMPALA-2986">
- <h3 class="title topictitle3" id="ariaid-title37">Aggregation spill loop gives up too early leading to mem limit exceeded errors</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title38" id="fixed_issues_250__IMPALA-2986">
+ <h3 class="title topictitle3" id="ariaid-title38">Aggregation spill loop gives up too early leading to mem limit exceeded errors</h3>
<div class="body conbody">
<p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-2986" target="_blank">IMPALA-2986</a></p>
<p class="p">
@@ -467,8 +483,8 @@ select case when 1=1 then 'didit' end as c1 from (select 1 as one) a having 1!=1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title38" id="fixed_issues_250__IMPALA-2592">
- <h3 class="title topictitle3" id="ariaid-title38">DataStreamSender::Channel::CloseInternal() does not close the channel on an error.</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title39" id="fixed_issues_250__IMPALA-2592">
+ <h3 class="title topictitle3" id="ariaid-title39">DataStreamSender::Channel::CloseInternal() does not close the channel on an error.</h3>
<div class="body conbody">
<p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-2592" target="_blank">IMPALA-2592</a></p>
<p class="p">
@@ -480,8 +496,8 @@ select case when 1=1 then 'didit' end as c1 from (select 1 as one) a having 1!=1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title39" id="fixed_issues_250__IMPALA-2184">
- <h3 class="title topictitle3" id="ariaid-title39">Codegen does not catch exceptions in FROM_UNIXTIME()</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title40" id="fixed_issues_250__IMPALA-2184">
+ <h3 class="title topictitle3" id="ariaid-title40">Codegen does not catch exceptions in FROM_UNIXTIME()</h3>
<div class="body conbody">
<p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-2184" target="_blank">IMPALA-2184</a></p>
<p class="p">
@@ -496,8 +512,8 @@ SET disable_codegen=true;
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title40" id="fixed_issues_250__IMPALA-2788">
- <h3 class="title topictitle3" id="ariaid-title40">Impala returns wrong result for function 'conv(bigint, from_base, to_base)'</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title41" id="fixed_issues_250__IMPALA-2788">
+ <h3 class="title topictitle3" id="ariaid-title41">Impala returns wrong result for function 'conv(bigint, from_base, to_base)'</h3>
<div class="body conbody">
<p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-2788" target="_blank">IMPALA-2788</a></p>
<p class="p">
@@ -552,9 +568,9 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
- <article class="topic concept nested1" aria-labelledby="ariaid-title41" id="fixed_issues__fixed_issues_241">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title42" id="fixed_issues__fixed_issues_241">
- <h2 class="title topictitle2" id="ariaid-title41">Issues Fixed in <span class="keyword">Impala 2.4.1</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title42">Issues Fixed in <span class="keyword">Impala 2.4.1</span></h2>
<div class="body conbody">
<p class="p">
@@ -563,9 +579,9 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title42" id="fixed_issues__fixed_issues_240">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title43" id="fixed_issues__fixed_issues_240">
- <h2 class="title topictitle2" id="ariaid-title42">Issues Fixed in <span class="keyword">Impala 2.4.0</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title43">Issues Fixed in <span class="keyword">Impala 2.4.0</span></h2>
<div class="body conbody">
@@ -581,9 +597,9 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
- <article class="topic concept nested1" aria-labelledby="ariaid-title43" id="fixed_issues__fixed_issues_234">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title44" id="fixed_issues__fixed_issues_234">
- <h2 class="title topictitle2" id="ariaid-title43">Issues Fixed in <span class="keyword">Impala 2.3.4</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title44">Issues Fixed in <span class="keyword">Impala 2.3.4</span></h2>
<div class="body conbody">
<p class="p"></p>
@@ -591,9 +607,9 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title44" id="fixed_issues__fixed_issues_232">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title45" id="fixed_issues__fixed_issues_232">
- <h2 class="title topictitle2" id="ariaid-title44">Issues Fixed in <span class="keyword">Impala 2.3.2</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title45">Issues Fixed in <span class="keyword">Impala 2.3.2</span></h2>
<div class="body conbody">
@@ -604,8 +620,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
- <article class="topic concept nested2" aria-labelledby="ariaid-title45" id="fixed_issues_232__IMPALA-2829">
- <h3 class="title topictitle3" id="ariaid-title45">SEGV in AnalyticEvalNode touching NULL input_stream_</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title46" id="fixed_issues_232__IMPALA-2829">
+ <h3 class="title topictitle3" id="ariaid-title46">SEGV in AnalyticEvalNode touching NULL input_stream_</h3>
<div class="body conbody">
<p class="p">
A query involving an analytic function could encounter a serious error.
@@ -616,8 +632,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title46" id="fixed_issues_232__IMPALA-2722">
- <h3 class="title topictitle3" id="ariaid-title46">Free local allocations per row batch in non-partitioned AGG and HJ</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title47" id="fixed_issues_232__IMPALA-2722">
+ <h3 class="title topictitle3" id="ariaid-title47">Free local allocations per row batch in non-partitioned AGG and HJ</h3>
<div class="body conbody">
<p class="p">
An outer join query could fail unexpectedly with an out-of-memory error
@@ -627,9 +643,9 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title47" id="fixed_issues_232__IMPALA-2612">
+ <article class="topic concept nested2" aria-labelledby="ariaid-title48" id="fixed_issues_232__IMPALA-2612">
- <h3 class="title topictitle3" id="ariaid-title47">Free local allocations once for every row batch when building hash tables</h3>
+ <h3 class="title topictitle3" id="ariaid-title48">Free local allocations once for every row batch when building hash tables</h3>
<div class="body conbody">
<p class="p">
A join query could encounter a serious error due to an internal failure to allocate memory, which
@@ -639,8 +655,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title48" id="fixed_issues_232__IMPALA-2643">
- <h3 class="title topictitle3" id="ariaid-title48">Prevent migrating incorrectly inferred identity predicates into inline views</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title49" id="fixed_issues_232__IMPALA-2643">
+ <h3 class="title topictitle3" id="ariaid-title49">Prevent migrating incorrectly inferred identity predicates into inline views</h3>
<div class="body conbody">
<p class="p">
Referring to the same column twice in a view definition could cause the view to omit
@@ -652,8 +668,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title49" id="fixed_issues_232__IMPALA-2695">
- <h3 class="title topictitle3" id="ariaid-title49">Fix GRANTs on URIs with uppercase letters</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title50" id="fixed_issues_232__IMPALA-2695">
+ <h3 class="title topictitle3" id="ariaid-title50">Fix GRANTs on URIs with uppercase letters</h3>
<div class="body conbody">
<p class="p">
A <code class="ph codeph">GRANT</code> statement for a URI could be ineffective if the URI
@@ -682,8 +698,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title51" id="fixed_issues_232__IMPALA-2226">
- <h3 class="title topictitle3" id="ariaid-title51">Throw AnalysisError if table properties are too large (for the Hive metastore)</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title52" id="fixed_issues_232__IMPALA-2226">
+ <h3 class="title topictitle3" id="ariaid-title52">Throw AnalysisError if table properties are too large (for the Hive metastore)</h3>
<div class="body conbody">
<p class="p">
<code class="ph codeph">CREATE TABLE</code> or <code class="ph codeph">ALTER TABLE</code> statements could fail with
@@ -695,8 +711,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title52" id="fixed_issues_232__IMPALA-2273-552">
- <h3 class="title topictitle3" id="ariaid-title52">Make MAX_PAGE_HEADER_SIZE configurable</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title53" id="fixed_issues_232__IMPALA-2273-552">
+ <h3 class="title topictitle3" id="ariaid-title53">Make MAX_PAGE_HEADER_SIZE configurable</h3>
<div class="body conbody">
<p class="p">
Impala could fail to access Parquet data files with page headers larger than 8 MB, which could
@@ -708,8 +724,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title53" id="fixed_issues_232__IMPALA-2473">
- <h3 class="title topictitle3" id="ariaid-title53">reduce scanner memory usage</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title54" id="fixed_issues_232__IMPALA-2473">
+ <h3 class="title topictitle3" id="ariaid-title54">reduce scanner memory usage</h3>
<div class="body conbody">
<p class="p">
Queries on Parquet tables could consume excessive memory (potentially multiple gigabytes) due to producing
@@ -721,8 +737,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title54" id="fixed_issues_232__IMPALA-2113">
- <h3 class="title topictitle3" id="ariaid-title54">Handle error when distinct and aggregates are used with a having clause</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title55" id="fixed_issues_232__IMPALA-2113">
+ <h3 class="title topictitle3" id="ariaid-title55">Handle error when distinct and aggregates are used with a having clause</h3>
<div class="body conbody">
<p class="p">
A query that included a <code class="ph codeph">DISTINCT</code> operator and a <code class="ph codeph">HAVING</code> clause, but no
@@ -733,8 +749,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title55" id="fixed_issues_232__IMPALA-2225">
- <h3 class="title topictitle3" id="ariaid-title55">Handle error when star based select item and aggregate are incorrectly used</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title56" id="fixed_issues_232__IMPALA-2225">
+ <h3 class="title topictitle3" id="ariaid-title56">Handle error when star based select item and aggregate are incorrectly used</h3>
<div class="body conbody">
<p class="p">
A query that included <code class="ph codeph">*</code> in the <code class="ph codeph">SELECT</code> list, in addition to an
@@ -746,8 +762,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title56" id="fixed_issues_232__IMPALA-2731-552">
- <h3 class="title topictitle3" id="ariaid-title56">Refactor MemPool usage in HBase scan node</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title57" id="fixed_issues_232__IMPALA-2731-552">
+ <h3 class="title topictitle3" id="ariaid-title57">Refactor MemPool usage in HBase scan node</h3>
<div class="body conbody">
<p class="p">
Queries involving HBase tables used substantially more memory than in earlier Impala versions.
@@ -759,8 +775,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title57" id="fixed_issues_232__IMPALA-1459-552">
- <h3 class="title topictitle3" id="ariaid-title57">Fix migration/assignment of On-clause predicates inside inline views</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title58" id="fixed_issues_232__IMPALA-1459-552">
+ <h3 class="title topictitle3" id="ariaid-title58">Fix migration/assignment of On-clause predicates inside inline views</h3>
<div class="body conbody">
<p class="p">
Some combinations of <code class="ph codeph">ON</code> clauses in join queries could result in comparisons
@@ -783,8 +799,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title58" id="fixed_issues_232__IMPALA-2558">
- <h3 class="title topictitle3" id="ariaid-title58">DCHECK in parquet scanner after block read error</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title59" id="fixed_issues_232__IMPALA-2558">
+ <h3 class="title topictitle3" id="ariaid-title59">DCHECK in parquet scanner after block read error</h3>
<div class="body conbody">
<p class="p">
A debug build of Impala could encounter a serious error after encountering some kinds of I/O
@@ -794,8 +810,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title59" id="fixed_issues_232__IMPALA-2535">
- <h3 class="title topictitle3" id="ariaid-title59">PAGG hits mem_limit when switching to I/O buffers</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title60" id="fixed_issues_232__IMPALA-2535">
+ <h3 class="title topictitle3" id="ariaid-title60">PAGG hits mem_limit when switching to I/O buffers</h3>
<div class="body conbody">
<p class="p">
A join query could fail with an out-of-memory error despite the apparent presence of sufficient memory.
@@ -810,8 +826,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
- <article class="topic concept nested2" aria-labelledby="ariaid-title60" id="fixed_issues_232__IMPALA-2559">
- <h3 class="title topictitle3" id="ariaid-title60">Fix check failed: sorter_runs_.back()->is_pinned_</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title61" id="fixed_issues_232__IMPALA-2559">
+ <h3 class="title topictitle3" id="ariaid-title61">Fix check failed: sorter_runs_.back()->is_pinned_</h3>
<div class="body conbody">
<p class="p">
A query could fail with an internal error while calculating the memory limit.
@@ -821,8 +837,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title61" id="fixed_issues_232__IMPALA-2614">
- <h3 class="title topictitle3" id="ariaid-title61">Don't ignore Status returned by DataStreamRecvr::CreateMerger()</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title62" id="fixed_issues_232__IMPALA-2614">
+ <h3 class="title topictitle3" id="ariaid-title62">Don't ignore Status returned by DataStreamRecvr::CreateMerger()</h3>
<div class="body conbody">
<p class="p">
A query could fail with an internal error while calculating the memory limit.
@@ -833,8 +849,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title62" id="fixed_issues_232__IMPALA-2591">
- <h3 class="title topictitle3" id="ariaid-title62">DataStreamSender::Send() does not return an error status if SendBatch() failed</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title63" id="fixed_issues_232__IMPALA-2591">
+ <h3 class="title topictitle3" id="ariaid-title63">DataStreamSender::Send() does not return an error status if SendBatch() failed</h3>
<div class="body conbody">
<p class="p">
@@ -843,8 +859,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title63" id="fixed_issues_232__IMPALA-2598">
- <h3 class="title topictitle3" id="ariaid-title63">Re-enable SSL and Kerberos on server-server</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title64" id="fixed_issues_232__IMPALA-2598">
+ <h3 class="title topictitle3" id="ariaid-title64">Re-enable SSL and Kerberos on server-server</h3>
<div class="body conbody">
<p class="p">
These fixes lift the restriction on using SSL encryption and Kerberos authentication together
@@ -859,9 +875,9 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title64" id="fixed_issues__fixed_issues_231">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title65" id="fixed_issues__fixed_issues_231">
- <h2 class="title topictitle2" id="ariaid-title64">Issues Fixed in <span class="keyword">Impala 2.3.1</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title65">Issues Fixed in <span class="keyword">Impala 2.3.1</span></h2>
<div class="body conbody">
@@ -874,9 +890,9 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title65" id="fixed_issues__fixed_issues_230">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title66" id="fixed_issues__fixed_issues_230">
- <h2 class="title topictitle2" id="ariaid-title65">Issues Fixed in <span class="keyword">Impala 2.3.0</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title66">Issues Fixed in <span class="keyword">Impala 2.3.0</span></h2>
<div class="body conbody">
<p class="p"> This section lists the most serious or frequently encountered customer
@@ -890,8 +906,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
- <article class="topic concept nested2" aria-labelledby="ariaid-title66" id="fixed_issues_230__serious_230">
- <h3 class="title topictitle3" id="ariaid-title66">Fixes for Serious Errors</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title67" id="fixed_issues_230__serious_230">
+ <h3 class="title topictitle3" id="ariaid-title67">Fixes for Serious Errors</h3>
<div class="body conbody">
<p class="p">
A number of issues were resolved that could result in serious errors
@@ -913,8 +929,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title67" id="fixed_issues_230__correctness_230">
- <h3 class="title topictitle3" id="ariaid-title67">Fixes for Correctness Errors</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title68" id="fixed_issues_230__correctness_230">
+ <h3 class="title topictitle3" id="ariaid-title68">Fixes for Correctness Errors</h3>
<div class="body conbody">
<p class="p">
A number of issues were resolved that could result in wrong results
@@ -939,9 +955,9 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
- <article class="topic concept nested1" aria-labelledby="ariaid-title68" id="fixed_issues__fixed_issues_2210">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title69" id="fixed_issues__fixed_issues_2210">
- <h2 class="title topictitle2" id="ariaid-title68">Issues Fixed in <span class="keyword">Impala 2.2.10</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title69">Issues Fixed in <span class="keyword">Impala 2.2.10</span></h2>
<div class="body conbody">
<p class="p"></p>
@@ -949,9 +965,9 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title69" id="fixed_issues__fixed_issues_229">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title70" id="fixed_issues__fixed_issues_229">
- <h2 class="title topictitle2" id="ariaid-title69">Issues Fixed in <span class="keyword">Impala 2.2.9</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title70">Issues Fixed in <span class="keyword">Impala 2.2.9</span></h2>
<div class="body conbody">
@@ -961,9 +977,9 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
- <article class="topic concept nested2" aria-labelledby="ariaid-title70" id="fixed_issues_229__IMPALA-1917">
+ <article class="topic concept nested2" aria-labelledby="ariaid-title71" id="fixed_issues_229__IMPALA-1917">
- <h3 class="title topictitle3" id="ariaid-title70">Query return empty result if it contains NullLiteral in inlineview</h3>
+ <h3 class="title topictitle3" id="ariaid-title71">Query return empty result if it contains NullLiteral in inlineview</h3>
<div class="body conbody">
<p class="p">
If an inline view in a <code class="ph codeph">FROM</code> clause contained a <code class="ph codeph">NULL</code> literal,
@@ -973,9 +989,9 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title71" id="fixed_issues_229__IMPALA-2731">
+ <article class="topic concept nested2" aria-labelledby="ariaid-title72" id="fixed_issues_229__IMPALA-2731">
- <h3 class="title topictitle3" id="ariaid-title71">HBase scan node uses 2-4x memory after upgrade to Impala 2.2.8</h3>
+ <h3 class="title topictitle3" id="ariaid-title72">HBase scan node uses 2-4x memory after upgrade to Impala 2.2.8</h3>
<div class="body conbody">
<p class="p">
Queries involving HBase tables used substantially more memory than in earlier Impala versions.
@@ -987,8 +1003,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title72" id="fixed_issues_229__IMPALA-1459">
- <h3 class="title topictitle3" id="ariaid-title72">Fix migration/assignment of On-clause predicates inside inline views</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title73" id="fixed_issues_229__IMPALA-1459">
+ <h3 class="title topictitle3" id="ariaid-title73">Fix migration/assignment of On-clause predicates inside inline views</h3>
<div class="body conbody">
<p class="p">
@@ -1012,8 +1028,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title73" id="fixed_issues_229__IMPALA-2446">
- <h3 class="title topictitle3" id="ariaid-title73">Fix wrong predicate assignment in outer joins</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title74" id="fixed_issues_229__IMPALA-2446">
+ <h3 class="title topictitle3" id="ariaid-title74">Fix wrong predicate assignment in outer joins</h3>
<div class="body conbody">
<p class="p">
The join predicate for an <code class="ph codeph">OUTER JOIN</code> clause could be applied at the wrong stage
@@ -1023,8 +1039,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title74" id="fixed_issues_229__IMPALA-2648">
- <h3 class="title topictitle3" id="ariaid-title74">Avoid sending large partition stats objects over thrift</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title75" id="fixed_issues_229__IMPALA-2648">
+ <h3 class="title topictitle3" id="ariaid-title75">Avoid sending large partition stats objects over thrift</h3>
<div class="body conbody">
<p class="p"> The <span class="keyword cmdname">catalogd</span> daemon could encounter a serious error when loading the
incremental statistics metadata for tables with large numbers of partitions and columns.
@@ -1037,8 +1053,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title75" id="fixed_issues_229__IMPALA-1675">
- <h3 class="title topictitle3" id="ariaid-title75">Avoid overflow when adding large intervals to TIMESTAMPs</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title76" id="fixed_issues_229__IMPALA-1675">
+ <h3 class="title topictitle3" id="ariaid-title76">Avoid overflow when adding large intervals to TIMESTAMPs</h3>
<div class="body conbody">
<p class="p"> Adding or subtracting a large <code class="ph codeph">INTERVAL</code> value to a
<code class="ph codeph">TIMESTAMP</code> value could produce an incorrect result, with the value
@@ -1047,8 +1063,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title76" id="fixed_issues_229__IMPALA-1949">
- <h3 class="title topictitle3" id="ariaid-title76">Analysis exception when a binary operator contains an IN operator with values</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title77" id="fixed_issues_229__IMPALA-1949">
+ <h3 class="title topictitle3" id="ariaid-title77">Analysis exception when a binary operator contains an IN operator with values</h3>
<div class="body conbody">
<p class="p">
An <code class="ph codeph">IN</code> operator with literal values could cause a statement to fail if used
@@ -1058,9 +1074,9 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title77" id="fixed_issues_229__IMPALA-2273">
+ <article class="topic concept nested2" aria-labelledby="ariaid-title78" id="fixed_issues_229__IMPALA-2273">
- <h3 class="title topictitle3" id="ariaid-title77">Make MAX_PAGE_HEADER_SIZE configurable</h3>
+ <h3 class="title topictitle3" id="ariaid-title78">Make MAX_PAGE_HEADER_SIZE configurable</h3>
<div class="body conbody">
<p class="p"> Impala could fail to access Parquet data files with page headers larger than 8 MB, which
could occur, for example, if the minimum or maximum values for a column were long strings.
@@ -1070,8 +1086,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title78" id="fixed_issues_229__IMPALA-2357">
- <h3 class="title topictitle3" id="ariaid-title78">Fix spilling sorts with var-len slots that are NULL or empty.</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title79" id="fixed_issues_229__IMPALA-2357">
+ <h3 class="title topictitle3" id="ariaid-title79">Fix spilling sorts with var-len slots that are NULL or empty.</h3>
<div class="body conbody">
<p class="p">
A query that activated the spill-to-disk mechanism could fail if it contained a sort expression
@@ -1081,8 +1097,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title79" id="fixed_issues_229__block_pin_oom">
- <h3 class="title topictitle3" id="ariaid-title79">Work-around IMPALA-2344: Fail query with OOM in case block->Pin() fails</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title80" id="fixed_issues_229__block_pin_oom">
+ <h3 class="title topictitle3" id="ariaid-title80">Work-around IMPALA-2344: Fail query with OOM in case block->Pin() fails</h3>
<div class="body conbody">
<p class="p">
Some queries that activated the spill-to-disk mechanism could produce a serious error
@@ -1093,8 +1109,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title80" id="fixed_issues_229__IMPALA-2252">
- <h3 class="title topictitle3" id="ariaid-title80">Crash (likely race) tearing down BufferedBlockMgr on query failure</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title81" id="fixed_issues_229__IMPALA-2252">
+ <h3 class="title topictitle3" id="ariaid-title81">Crash (likely race) tearing down BufferedBlockMgr on query failure</h3>
<div class="body conbody">
<p class="p">
A serious error could occur under rare circumstances, due to a race condition while freeing memory during heavily concurrent workloads.
@@ -1103,8 +1119,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title81" id="fixed_issues_229__IMPALA-1746">
- <h3 class="title topictitle3" id="ariaid-title81">QueryExecState doesn't check for query cancellation or errors</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title82" id="fixed_issues_229__IMPALA-1746">
+ <h3 class="title topictitle3" id="ariaid-title82">QueryExecState doesn't check for query cancellation or errors</h3>
<div class="body conbody">
<p class="p">
A call to <code class="ph codeph">SetError()</code> in a user-defined function (UDF) would not cause the query to fail as expected.
@@ -1113,8 +1129,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title82" id="fixed_issues_229__IMPALA-2533">
- <h3 class="title topictitle3" id="ariaid-title82">Impala throws IllegalStateException when inserting data into a partition while select
+ <article class="topic concept nested2" aria-labelledby="ariaid-title83" id="fixed_issues_229__IMPALA-2533">
+ <h3 class="title topictitle3" id="ariaid-title83">Impala throws IllegalStateException when inserting data into a partition while select
subquery group by partition columns</h3>
<div class="body conbody">
<p class="p">
@@ -1127,9 +1143,9 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title83" id="fixed_issues__fixed_issues_228">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title84" id="fixed_issues__fixed_issues_228">
- <h2 class="title topictitle2" id="ariaid-title83">Issues Fixed in <span class="keyword">Impala 2.2.8</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title84">Issues Fixed in <span class="keyword">Impala 2.2.8</span></h2>
<div class="body conbody">
@@ -1141,8 +1157,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
- <article class="topic concept nested2" aria-labelledby="ariaid-title84" id="fixed_issues_228__IMPALA-1136">
- <h3 class="title topictitle3" id="ariaid-title84">Impala is unable to read hive tables created with the "STORED AS AVRO" clause</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title85" id="fixed_issues_228__IMPALA-1136">
+ <h3 class="title topictitle3" id="ariaid-title85">Impala is unable to read hive tables created with the "STORED AS AVRO" clause</h3>
<div class="body conbody">
<p class="p">Impala could not read Avro tables created in Hive with the <code class="ph codeph">STORED AS AVRO</code> clause.</p>
<p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-1136" target="_blank">IMPALA-1136</a>,
@@ -1150,8 +1166,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title85" id="fixed_issues_228__IMPALA-2213">
- <h3 class="title topictitle3" id="ariaid-title85">make Parquet scanner fail query if the file size metadata is stale</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title86" id="fixed_issues_228__IMPALA-2213">
+ <h3 class="title topictitle3" id="ariaid-title86">make Parquet scanner fail query if the file size metadata is stale</h3>
<div class="body conbody">
<p class="p">If a Parquet file in HDFS was overwritten by a smaller file, Impala could encounter a serious error.
Issuing a <code class="ph codeph">INVALIDATE METADATA</code> statement before a subsequent query would avoid the error.
@@ -1161,8 +1177,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title86" id="fixed_issues_228__IMPALA-2249">
- <h3 class="title topictitle3" id="ariaid-title86">Avoid allocating StringBuffer > 1GB in ScannerContext::Stream::GetBytesInternal()</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title87" id="fixed_issues_228__IMPALA-2249">
+ <h3 class="title topictitle3" id="ariaid-title87">Avoid allocating StringBuffer > 1GB in ScannerContext::Stream::GetBytesInternal()</h3>
<div class="body conbody">
<p class="p">Impala could encounter a serious error when reading compressed text files larger than 1 GB. The fix causes Impala
to issue an error message instead in this case.</p>
@@ -1170,8 +1186,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title87" id="fixed_issues_228__IMPALA-2284">
- <h3 class="title topictitle3" id="ariaid-title87">Disallow long (1<<30) strings in group_concat()</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title88" id="fixed_issues_228__IMPALA-2284">
+ <h3 class="title topictitle3" id="ariaid-title88">Disallow long (1<<30) strings in group_concat()</h3>
<div class="body conbody">
<p class="p">A query using the <code class="ph codeph">group_concat()</code> function could encounter a serious error if the returned string value was larger than 1 GB.
Now the query fails with an error message in this case.</p>
@@ -1179,8 +1195,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title88" id="fixed_issues_228__IMPALA-2270">
- <h3 class="title topictitle3" id="ariaid-title88">avoid FnvHash64to32 with empty inputs</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title89" id="fixed_issues_228__IMPALA-2270">
+ <h3 class="title topictitle3" id="ariaid-title89">avoid FnvHash64to32 with empty inputs</h3>
<div class="body conbody">
<p class="p">An edge case in the algorithm used to distribute data among nodes could result in uneven distribution of work for some queries,
with all data sent to the same node.</p>
@@ -1188,8 +1204,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title89" id="fixed_issues_228__IMPALA-2348">
- <h3 class="title topictitle3" id="ariaid-title89">The catalog does not close the connection to HMS during table invalidation</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title90" id="fixed_issues_228__IMPALA-2348">
+ <h3 class="title topictitle3" id="ariaid-title90">The catalog does not close the connection to HMS during table invalidation</h3>
<div class="body conbody">
<p class="p">A communication error could occur between Impala and the Hive metastore database, causing Impala operations that update
table metadata to fail.</p>
@@ -1197,16 +1213,16 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title90" id="fixed_issues_228__IMPALA-2364-548">
- <h3 class="title topictitle3" id="ariaid-title90">Wrong DCHECK in PHJ::ProcessProbeBatch</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title91" id="fixed_issues_228__IMPALA-2364-548">
+ <h3 class="title topictitle3" id="ariaid-title91">Wrong DCHECK in PHJ::ProcessProbeBatch</h3>
<div class="body conbody">
<p class="p">Certain queries could encounter a serious error if the spill-to-disk mechanism was activated.</p>
<p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-2364" target="_blank">IMPALA-2364</a></p>
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title91" id="fixed_issues_228__IMPALA-2165-548">
- <h3 class="title topictitle3" id="ariaid-title91">Avoid cardinality 0 in scan nodes of small tables and low selectivity</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title92" id="fixed_issues_228__IMPALA-2165-548">
+ <h3 class="title topictitle3" id="ariaid-title92">Avoid cardinality 0 in scan nodes of small tables and low selectivity</h3>
<div class="body conbody">
<p class="p">Impala could generate a suboptimal query plan for some queries involving small tables.</p>
<p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-2165" target="_blank">IMPALA-2165</a></p>
@@ -1215,9 +1231,9 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title92" id="fixed_issues__fixed_issues_227">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title93" id="fixed_issues__fixed_issues_227">
- <h2 class="title topictitle2" id="ariaid-title92">Issues Fixed in <span class="keyword">Impala 2.2.7</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title93">Issues Fixed in <span class="keyword">Impala 2.2.7</span></h2>
<div class="body conbody">
@@ -1227,8 +1243,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
- <article class="topic concept nested2" aria-labelledby="ariaid-title93" id="fixed_issues_227__IMPALA-1983">
- <h3 class="title topictitle3" id="ariaid-title93">Warn if table stats are potentially corrupt.</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title94" id="fixed_issues_227__IMPALA-1983">
+ <h3 class="title topictitle3" id="ariaid-title94">Warn if table stats are potentially corrupt.</h3>
<div class="body conbody">
<p class="p">
Impala warns if it detects a discrepancy in table statistics: a table considered to have zero rows even though there are data files present.
@@ -1238,24 +1254,24 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title94" id="fixed_issues_227__IMPALA-2266">
- <h3 class="title topictitle3" id="ariaid-title94">Pass correct child node in 2nd phase merge aggregation.</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title95" id="fixed_issues_227__IMPALA-2266">
+ <h3 class="title topictitle3" id="ariaid-title95">Pass correct child node in 2nd phase merge aggregation.</h3>
<div class="body conbody">
<p class="p">A query could encounter a serious error if it included a particular combination of aggregate functions and inline views.</p>
<p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-2266" target="_blank">IMPALA-2266</a></p>
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title95" id="fixed_issues_227__IMPALA-2216">
- <h3 class="title topictitle3" id="ariaid-title95">Set the output smap of an EmptySetNode produced from an empty inline view.</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title96" id="fixed_issues_227__IMPALA-2216">
+ <h3 class="title topictitle3" id="ariaid-title96">Set the output smap of an EmptySetNode produced from an empty inline view.</h3>
<div class="body conbody">
<p class="p">A query could encounter a serious error if it included an inline view whose subquery had no <code class="ph codeph">FROM</code> clause.</p>
<p class="p"><strong class="ph b">Bug:</strong> <a class="xref" href="https://issues.apache.org/jira/browse/IMPALA-2216" target="_blank">IMPALA-2216</a></p>
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title96" id="fixed_issues_227__IMPALA-2203">
- <h3 class="title topictitle3" id="ariaid-title96">Set an InsertStmt's result exprs from the source statement's result exprs.</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title97" id="fixed_issues_227__IMPALA-2203">
+ <h3 class="title topictitle3" id="ariaid-title97">Set an InsertStmt's result exprs from the source statement's result exprs.</h3>
<div class="body conbody">
<p class="p">
A <code class="ph codeph">CREATE TABLE AS SELECT</code> or <code class="ph codeph">INSERT ... SELECT</code> statement could produce
@@ -1266,8 +1282,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title97" id="fixed_issues_227__IMPALA-2088">
- <h3 class="title topictitle3" id="ariaid-title97">Fix planning of empty union operands with analytics.</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title98" id="fixed_issues_227__IMPALA-2088">
+ <h3 class="title topictitle3" id="ariaid-title98">Fix planning of empty union operands with analytics.</h3>
<div class="body conbody">
<p class="p">
A query could return incorrect results if it contained a <code class="ph codeph">UNION</code> clause,
@@ -1281,8 +1297,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
- <article class="topic concept nested2" aria-labelledby="ariaid-title98" id="fixed_issues_227__IMPALA-2089">
- <h3 class="title topictitle3" id="ariaid-title98">Retain eq predicates bound by grouping slots with complex grouping exprs.</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title99" id="fixed_issues_227__IMPALA-2089">
+ <h3 class="title topictitle3" id="ariaid-title99">Retain eq predicates bound by grouping slots with complex grouping exprs.</h3>
<div class="body conbody">
<p class="p">
A query containing an <code class="ph codeph">INNER JOIN</code> clause could return undesired rows.
@@ -1294,8 +1310,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
- <article class="topic concept nested2" aria-labelledby="ariaid-title99" id="fixed_issues_227__IMPALA-2199">
- <h3 class="title topictitle3" id="ariaid-title99">Row count not set for empty partition when spec is used with compute incremental stats</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title100" id="fixed_issues_227__IMPALA-2199">
+ <h3 class="title topictitle3" id="ariaid-title100">Row count not set for empty partition when spec is used with compute incremental stats</h3>
<div class="body conbody">
<p class="p">
A <code class="ph codeph">COMPUTE INCREMENTAL STATS</code> statement could leave the row count for an emptyp partition as -1,
@@ -1305,8 +1321,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title100" id="fixed_issues_227__IMPALA-1898">
- <h3 class="title topictitle3" id="ariaid-title100">Explicit aliases + ordinals analysis bug</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title101" id="fixed_issues_227__IMPALA-1898">
+ <h3 class="title topictitle3" id="ariaid-title101">Explicit aliases + ordinals analysis bug</h3>
<div class="body conbody">
<p class="p">
A query could encounter a serious error if it included column aliases with the same names as table columns, and used
@@ -1316,8 +1332,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title101" id="fixed_issues_227__IMPALA-1987">
- <h3 class="title topictitle3" id="ariaid-title101">Fix TupleIsNullPredicate to return false if no tuples are nullable.</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title102" id="fixed_issues_227__IMPALA-1987">
+ <h3 class="title topictitle3" id="ariaid-title102">Fix TupleIsNullPredicate to return false if no tuples are nullable.</h3>
<div class="body conbody">
<p class="p">
A query could return incorrect results if it included an outer join clause, inline views, and calls to functions such as <code class="ph codeph">coalesce()</code>
@@ -1327,8 +1343,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title102" id="fixed_issues_227__IMPALA-2178">
- <h3 class="title topictitle3" id="ariaid-title102">fix Expr::ComputeResultsLayout() logic</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title103" id="fixed_issues_227__IMPALA-2178">
+ <h3 class="title topictitle3" id="ariaid-title103">fix Expr::ComputeResultsLayout() logic</h3>
<div class="body conbody">
<p class="p">
A query could return incorrect results if the table contained multiple <code class="ph codeph">CHAR</code> columns with length of 2 or less,
@@ -1338,8 +1354,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title103" id="fixed_issues_227__IMPALA-1737">
- <h3 class="title topictitle3" id="ariaid-title103">Substitute an InsertStmt's partition key exprs with the root node's smap.</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title104" id="fixed_issues_227__IMPALA-1737">
+ <h3 class="title topictitle3" id="ariaid-title104">Substitute an InsertStmt's partition key exprs with the root node's smap.</h3>
<div class="body conbody">
<p class="p">
An <code class="ph codeph">INSERT</code> statement could encounter a serious error if the <code class="ph codeph">SELECT</code>
@@ -1351,9 +1367,9 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title104" id="fixed_issues__fixed_issues_225">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title105" id="fixed_issues__fixed_issues_225">
- <h2 class="title topictitle2" id="ariaid-title104">Issues Fixed in Impala <span class="keyword">Impala 2.2.5</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title105">Issues Fixed in Impala <span class="keyword">Impala 2.2.5</span></h2>
<div class="body conbody">
@@ -1363,8 +1379,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
- <article class="topic concept nested2" aria-labelledby="ariaid-title105" id="fixed_issues_225__IMPALA-2048">
- <h3 class="title topictitle3" id="ariaid-title105">Impala DML/DDL operations corrupt table metadata leading to Hive query failures</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title106" id="fixed_issues_225__IMPALA-2048">
+ <h3 class="title topictitle3" id="ariaid-title106">Impala DML/DDL operations corrupt table metadata leading to Hive query failures</h3>
<div class="body conbody">
<p class="p">
When the Impala <code class="ph codeph">COMPUTE STATS</code> statement was run on a partitioned Parquet table that was created in Hive, the table subsequently became inaccessible in Hive.
@@ -1375,8 +1391,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title106" id="fixed_issues_225__IMPALA-1929">
- <h3 class="title topictitle3" id="ariaid-title106">Avoiding a DCHECK of NULL hash table in spilled right joins</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title107" id="fixed_issues_225__IMPALA-1929">
+ <h3 class="title topictitle3" id="ariaid-title107">Avoiding a DCHECK of NULL hash table in spilled right joins</h3>
<div class="body conbody">
<p class="p">
@@ -1387,8 +1403,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title107" id="fixed_issues_225__IMPALA-2136">
- <h3 class="title topictitle3" id="ariaid-title107">Bug in PrintTColumnValue caused wrong stats for TINYINT partition cols</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title108" id="fixed_issues_225__IMPALA-2136">
+ <h3 class="title topictitle3" id="ariaid-title108">Bug in PrintTColumnValue caused wrong stats for TINYINT partition cols</h3>
<div class="body conbody">
<p class="p">
@@ -1399,8 +1415,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title108" id="fixed_issues_225__IMPALA-2018">
- <h3 class="title topictitle3" id="ariaid-title108">Where clause does not propagate to joins inside nested views</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title109" id="fixed_issues_225__IMPALA-2018">
+ <h3 class="title topictitle3" id="ariaid-title109">Where clause does not propagate to joins inside nested views</h3>
<div class="body conbody">
<p class="p">
@@ -1412,8 +1428,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title109" id="fixed_issues_225__IMPALA-2064">
- <h3 class="title topictitle3" id="ariaid-title109">Add effective_user() builtin</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title110" id="fixed_issues_225__IMPALA-2064">
+ <h3 class="title topictitle3" id="ariaid-title110">Add effective_user() builtin</h3>
<div class="body conbody">
<p class="p">
@@ -1426,8 +1442,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title110" id="fixed_issues_225__IMPALA-2125">
- <h3 class="title topictitle3" id="ariaid-title110">Make UTC to local TimestampValue conversion faster.</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title111" id="fixed_issues_225__IMPALA-2125">
+ <h3 class="title topictitle3" id="ariaid-title111">Make UTC to local TimestampValue conversion faster.</h3>
<div class="body conbody">
<p class="p">
@@ -1439,8 +1455,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title111" id="fixed_issues_225__IMPALA-2065">
- <h3 class="title topictitle3" id="ariaid-title111">Workaround IMPALA-1619 in BufferedBlockMgr::ConsumeMemory()</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title112" id="fixed_issues_225__IMPALA-2065">
+ <h3 class="title topictitle3" id="ariaid-title112">Workaround IMPALA-1619 in BufferedBlockMgr::ConsumeMemory()</h3>
<div class="body conbody">
<p class="p">
@@ -1457,9 +1473,9 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title112" id="fixed_issues__fixed_issues_223">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title113" id="fixed_issues__fixed_issues_223">
- <h2 class="title topictitle2" id="ariaid-title112">Issues Fixed in <span class="keyword">Impala 2.2.3</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title113">Issues Fixed in <span class="keyword">Impala 2.2.3</span></h2>
<div class="body conbody">
@@ -1469,8 +1485,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
- <article class="topic concept nested2" aria-labelledby="ariaid-title113" id="fixed_issues_223__isilon_support">
- <h3 class="title topictitle3" id="ariaid-title113">Enable using Isilon as the underlying filesystem.</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title114" id="fixed_issues_223__isilon_support">
+ <h3 class="title topictitle3" id="ariaid-title114">Enable using Isilon as the underlying filesystem.</h3>
<div class="body conbody">
<p class="p">
Enabling Impala to work with the Isilon filesystem involves a number of
@@ -1486,8 +1502,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
- <article class="topic concept nested2" aria-labelledby="ariaid-title114" id="fixed_issues_223__IMPALA-1381">
- <h3 class="title topictitle3" id="ariaid-title114">Expand set of supported timezones.</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title115" id="fixed_issues_223__IMPALA-1381">
+ <h3 class="title topictitle3" id="ariaid-title115">Expand set of supported timezones.</h3>
<div class="body conbody">
<p class="p">
The set of timezones recognized by Impala was expanded.
@@ -1499,8 +1515,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title115" id="fixed_issues_223__IMPALA-1963">
- <h3 class="title topictitle3" id="ariaid-title115">Impala Timestamp ISO-8601 Support.</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title116" id="fixed_issues_223__IMPALA-1963">
+ <h3 class="title topictitle3" id="ariaid-title116">Impala Timestamp ISO-8601 Support.</h3>
<div class="body conbody">
<p class="p">
Impala can now process <code class="ph codeph">TIMESTAMP</code> literals including a trailing <code class="ph codeph">z</code>,
@@ -1510,8 +1526,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title116" id="fixed_issues_223__IMPALA-2008">
- <h3 class="title topictitle3" id="ariaid-title116">Fix wrong warning when insert overwrite to empty table</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title117" id="fixed_issues_223__IMPALA-2008">
+ <h3 class="title topictitle3" id="ariaid-title117">Fix wrong warning when insert overwrite to empty table</h3>
<div class="body conbody">
<p class="p">
An <code class="ph codeph">INSERT OVERWRITE</code> operation would encounter an error
@@ -1522,10 +1538,10 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariaid-title117" id="fixed_issues_223__IMPALA-1952">
+ <article class="topic concept nested2" aria-labelledby="ariaid-title118" id="fixed_issues_223__IMPALA-1952">
- <h3 class="title topictitle3" id="ariaid-title117">Expand parsing of decimals to include scientific notation</h3>
+ <h3 class="title topictitle3" id="ariaid-title118">Expand parsing of decimals to include scientific notation</h3>
<div class="body conbody">
<p class="p">
<code class="ph codeph">DECIMAL</code> literals can now include <code class="ph codeph">e</code> scientific notation.
@@ -1539,9 +1555,9 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title118" id="fixed_issues__fixed_issues_221">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title119" id="fixed_issues__fixed_issues_221">
- <h2 class="title topictitle2" id="ariaid-title118">Issues Fixed in <span class="keyword">Impala 2.2.1</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title119">Issues Fixed in <span class="keyword">Impala 2.2.1</span></h2>
<div class="body conbody">
@@ -1552,9 +1568,9 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title119" id="fixed_issues__fixed_issues_220">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title120" id="fixed_issues__fixed_issues_220">
- <h2 class="title topictitle2" id="ariaid-title119">Issues Fixed in <span class="keyword">Impala 2.2.0</span></h2>
+ <h2 class="title topictitle2" id="ariaid-title120">Issues Fixed in <span class="keyword">Impala 2.2.0</span></h2>
<div class="body conbody">
@@ -1571,8 +1587,8 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
- <article class="topic concept nested2" aria-labelledby="ariaid-title120" id="fixed_issues_220__IMPALA-1607">
- <h3 class="title topictitle3" id="ariaid-title120">Altering a column's type causes column stats to stop sticking for that column</h3>
+ <article class="topic concept nested2" aria-labelledby="ariaid-title121" id="fixed_issues_220__IMPALA-1607">
+ <h3 class="title topictitle3" id="ariaid-title121">Altering a column's type causes column stats to stop sticking for that column</h3>
<div class="body conbody">
<p class="p">
When the type of a column was changed in either Hive or Impala through <code class="ph codeph">ALTER TABLE CHANGE COLUMN</code>, the metastore database did not correctly propagate
@@ -1585,16 +1601,16 @@ select 2061013007, conv(cast(cast(2061013007 as decimal(20,0)) as bigint), 16, 1
</div>
</article>
- <article class="topic concept nested2" aria-labelledby="ariai
<TRUNCATED>
[03/15] impala git commit: [DOCS] Add Impala docs from branch 2.x
Posted by mi...@apache.org.
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_revoke.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_revoke.html b/docs/build/html/topics/impala_revoke.html
index f693586..c67ec92 100644
--- a/docs/build/html/topics/impala_revoke.html
+++ b/docs/build/html/topics/impala_revoke.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="revoke"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>REVOKE Statement (Impala 2.0 or higher only)</title></head><body id="revoke"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="revoke"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>REVOKE Statement (Impala 2.0 or higher only)</title></head><body id="revoke"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">REVOKE Statement (<span class="keyword">Impala 2.0</span> or higher only)</h1>
@@ -93,16 +93,38 @@ object_type ::= TABLE | DATABASE | SERVER | URI
<p class="p">
<strong class="ph b">Kudu considerations:</strong>
</p>
- <p class="p">
- Access to Kudu tables must be granted to and revoked from roles as usual.
- Only users with <code class="ph codeph">ALL</code> privileges on <code class="ph codeph">SERVER</code> can create external Kudu tables.
- Currently, access to a Kudu table is <span class="q">"all or nothing"</span>:
- enforced at the table level rather than the column level, and applying to all
- SQL operations rather than individual statements such as <code class="ph codeph">INSERT</code>.
+ <div class="p">
+ Access to Kudu tables must be granted to and revoked from roles with the
+ following considerations:
+ <ul class="ul">
+ <li class="li">
+ Only users with the <code class="ph codeph">ALL</code> privilege on
+ <code class="ph codeph">SERVER</code> can create external Kudu tables.
+ </li>
+ <li class="li">
+ The <code class="ph codeph">ALL</code> privileges on <code class="ph codeph">SERVER</code> is
+ required to specify the <code class="ph codeph">kudu.master_addresses</code>
+ property in the <code class="ph codeph">CREATE TABLE</code> statements for managed
+ tables as well as external tables.
+ </li>
+ <li class="li">
+ Access to Kudu tables is enforced at the table level and at the
+ column level.
+ </li>
+ <li class="li">
+ The <code class="ph codeph">SELECT</code>- and <code class="ph codeph">INSERT</code>-specific
+ permissions are supported.
+ </li>
+ <li class="li">
+ The <code class="ph codeph">DELETE</code>, <code class="ph codeph">UPDATE</code>, and
+ <code class="ph codeph">UPSERT</code> operations require the <code class="ph codeph">ALL</code>
+ privilege.
+ </li>
+ </ul>
Because non-SQL APIs can access Kudu data without going through Sentry
authorization, currently the Sentry support is considered preliminary
and subject to change.
- </p>
+ </div>
<p class="p">
<strong class="ph b">Related information:</strong>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_runtime_bloom_filter_size.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_runtime_bloom_filter_size.html b/docs/build/html/topics/impala_runtime_bloom_filter_size.html
index ed0d8f2..1b9e047 100644
--- a/docs/build/html/topics/impala_runtime_bloom_filter_size.html
+++ b/docs/build/html/topics/impala_runtime_bloom_filter_size.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="runtime_bloom_filter_size"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>RUNTIME_BLOOM_FILTER_SIZE Query Option (Impala 2.5 or higher only)</title></head><body id="runtime_bloom_filter_size"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="runtime_bloom_filter_size"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>RUNTIME_BLOOM_FILTER_SIZE Query Option (Impala 2.5 or higher only)</title></head><body id="runtime_bloom_filter_size"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">RUNTIME_BLOOM_FILTER_SIZE Query Option (<span class="keyword">Impala 2.5</span> or higher only)</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_runtime_filter_max_size.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_runtime_filter_max_size.html b/docs/build/html/topics/impala_runtime_filter_max_size.html
index 8dc8438..f50f4bc 100644
--- a/docs/build/html/topics/impala_runtime_filter_max_size.html
+++ b/docs/build/html/topics/impala_runtime_filter_max_size.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="runtime_filter_max_size"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>RUNTIME_FILTER_MAX_SIZE Query Option (Impala 2.6 or higher only)</title></head><body id="runtime_filter_max_size"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="runtime_filter_max_size"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>RUNTIME_FILTER_MAX_SIZE Query Option (Impala 2.6 or higher only)</title></head><body id="runtime_filter_max_size"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">RUNTIME_FILTER_MAX_SIZE Query Option (<span class="keyword">Impala 2.6</span> or higher only)</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_runtime_filter_min_size.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_runtime_filter_min_size.html b/docs/build/html/topics/impala_runtime_filter_min_size.html
index e20eada..507bfde 100644
--- a/docs/build/html/topics/impala_runtime_filter_min_size.html
+++ b/docs/build/html/topics/impala_runtime_filter_min_size.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="runtime_filter_min_size"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>RUNTIME_FILTER_MIN_SIZE Query Option (Impala 2.6 or higher only)</title></head><body id="runtime_filter_min_size"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="runtime_filter_min_size"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>RUNTIME_FILTER_MIN_SIZE Query Option (Impala 2.6 or higher only)</title></head><body id="runtime_filter_min_size"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">RUNTIME_FILTER_MIN_SIZE Query Option (<span class="keyword">Impala 2.6</span> or higher only)</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_runtime_filter_mode.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_runtime_filter_mode.html b/docs/build/html/topics/impala_runtime_filter_mode.html
index 9fda92e..1bd27f9 100644
--- a/docs/build/html/topics/impala_runtime_filter_mode.html
+++ b/docs/build/html/topics/impala_runtime_filter_mode.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="runtime_filter_mode"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>RUNTIME_FILTER_MODE Query Option (Impala 2.5 or higher only)</title></head><body id="runtime_filter_mode"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="runtime_filter_mode"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>RUNTIME_FILTER_MODE Query Option (Impala 2.5 or higher only)</title></head><body id="runtime_filter_mode"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">RUNTIME_FILTER_MODE Query Option (<span class="keyword">Impala 2.5</span> or higher only)</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_runtime_filter_wait_time_ms.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_runtime_filter_wait_time_ms.html b/docs/build/html/topics/impala_runtime_filter_wait_time_ms.html
index 4c4971e..212e3f2 100644
--- a/docs/build/html/topics/impala_runtime_filter_wait_time_ms.html
+++ b/docs/build/html/topics/impala_runtime_filter_wait_time_ms.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="runtime_filter_wait_time_ms"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>RUNTIME_FILTER_WAIT_TIME_MS Query Option (Impala 2.5 or higher only)</title></head><body id="runtime_filter_wait_time_ms"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="runtime_filter_wait_time_ms"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>RUNTIME_FILTER_WAIT_TIME_MS Query Option (Impala 2.5 or higher only)</title></head><body id="runtime_filter_wait_time_ms"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">RUNTIME_FILTER_WAIT_TIME_MS Query Option (<span class="keyword">Impala 2.5</span> or higher only)</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_runtime_filtering.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_runtime_filtering.html b/docs/build/html/topics/impala_runtime_filtering.html
index e7781a6..30af569 100644
--- a/docs/build/html/topics/impala_runtime_filtering.html
+++ b/docs/build/html/topics/impala_runtime_filtering.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_performance.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="runtime_filtering"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Runtime Filtering for Impala Queries (Impala 2.5 or higher only)</title></head><body id="runtime_filtering"><main role="main"><article role="article" aria-labelledby="runtime_filtering__runtime_filters">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_performance.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="runtime_filtering"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Runtime Filtering for Impala Queries (Impala 2.5 or higher only)</title></head><body id="runtime_filtering"><main role="main"><article role="article" aria-labelledby="runtime_filtering__runtime_filters">
<h1 class="title topictitle1" id="runtime_filtering__runtime_filters">Runtime Filtering for Impala Queries (<span class="keyword">Impala 2.5</span> or higher only)</h1>
@@ -106,7 +106,7 @@
portion of the data from the other (larger) table against the full set of possible join keys.
In a shuffle join, there is no obvious <span class="q">"smaller"</span> table, and so the contents of both tables
are divided up, and corresponding portions of the data are transmitted to each host involved in the query.
- See <a class="xref" href="impala_hints.html#hints">Query Hints in Impala SELECT Statements</a> for information about how these different kinds of
+ See <a class="xref" href="impala_hints.html#hints">Optimizer Hints</a> for information about how these different kinds of
joins are processed.
</p>
</li>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_s3.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_s3.html b/docs/build/html/topics/impala_s3.html
index 453f26f..d93791e 100644
--- a/docs/build/html/topics/impala_s3.html
+++ b/docs/build/html/topics/impala_s3.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="s3"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Using Impala with the Amazon S3 Filesystem</title></head><body id="s3"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="s3"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Using Impala with the Amazon S3 Filesystem</title></head><body id="s3"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Using Impala with the Amazon S3 Filesystem</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_s3_skip_insert_staging.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_s3_skip_insert_staging.html b/docs/build/html/topics/impala_s3_skip_insert_staging.html
index 0a8ec49..97364b9 100644
--- a/docs/build/html/topics/impala_s3_skip_insert_staging.html
+++ b/docs/build/html/topics/impala_s3_skip_insert_staging.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="s3_skip_insert_staging"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>S3_SKIP_INSERT_STAGING Query Option (Impala 2.6 or higher only)</title></head><body id="s3_skip_insert_staging"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="s3_skip_insert_staging"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>S3_SKIP_INSERT_STAGING Query Option (Impala 2.6 or higher only)</title></head><body id="s3_skip_insert_staging"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">S3_SKIP_INSERT_STAGING Query Option (<span class="keyword">Impala 2.6</span> or higher only)</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_scalability.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_scalability.html b/docs/build/html/topics/impala_scalability.html
index 453b43f..cc994b2 100644
--- a/docs/build/html/topics/impala_scalability.html
+++ b/docs/build/html/topics/impala_scalability.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name
="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="scalability"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Scalability Considerations for Impala</title></head><body id="scalability"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name
="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="scalability"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Scalability Considerations for Impala</title></head><body id="scalability"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Scalability Considerations for Impala</h1>
@@ -575,7 +575,7 @@
If Impala still chooses a suboptimal execution strategy even with statistics available, or if it
is impractical to keep the statistics up to date for huge or rapidly changing tables, add hints
to the most resource-intensive queries to select the right execution strategy. See
- <a class="xref" href="impala_hints.html#hints">Query Hints in Impala SELECT Statements</a> for details.
+ <a class="xref" href="impala_hints.html#hints">Optimizer Hints</a> for details.
</li>
</ul>
</li>
@@ -897,26 +897,26 @@ vm.overcommit_memory=1
(that is, increase latency) to Impala queries, and reduce overall throughput for non-Impala
workloads that also require accessing HDFS files.
</p>
- <p class="p">
- In <span class="keyword">Impala 2.10</span> and higher, you can reduce NameNode overhead by enabling
- a caching feature for HDFS file handles. Data files that are accessed by different queries,
- or even multiple times within the same query, can be accessed without a new <span class="q">"open"</span>
- call and without fetching the file details again from the NameNode.
- </p>
+ <p class="p"> In <span class="keyword">Impala 2.10</span> and higher, you can reduce
+ NameNode overhead by enabling a caching feature for HDFS file handles.
+ Data files that are accessed by different queries, or even multiple
+ times within the same query, can be accessed without a new <span class="q">"open"</span>
+ call and without fetching the file details again from the NameNode. </p>
<p class="p">
Because this feature only involves HDFS data files, it does not apply to non-HDFS tables,
such as Kudu or HBase tables, or tables that store their data on cloud services such as
S3 or ADLS. Any read operations that perform remote reads also skip the cached file handles.
</p>
- <p class="p">
- This feature is turned off by default. To enable it, set the configuration option
- <code class="ph codeph">max_cached_file_handles</code> to a non-zero value for each <span class="keyword cmdname">impalad</span>
- daemon. Consider an initial starting value of 20 thousand, and adjust upward if NameNode
- overhead is still significant, or downward if it is more important to reduce the extra memory usage
- on each host. Each cache entry consumes 6 KB, meaning that caching 20,000 file handles requires
- up to 120 MB on each DataNode. The exact memory usage varies depending on how many file handles
- have actually been cached; memory is freed as file handles are evicted from the cache.
- </p>
+ <p class="p"> The feature is enabled by default with 20,000 file handles to be
+ cached. To change the value, set the configuration option
+ <code class="ph codeph">max_cached_file_handles</code> to a non-zero value for each
+ <span class="keyword cmdname">impalad</span> daemon. From the initial default value of
+ 20000, adjust upward if NameNode request load is still significant, or
+ downward if it is more important to reduce the extra memory usage on
+ each host. Each cache entry consumes 6 KB, meaning that caching 20,000
+ file handles requires up to 120 MB on each Impala executor. The exact
+ memory usage varies depending on how many file handles have actually
+ been cached; memory is freed as file handles are evicted from the cache. </p>
<p class="p">
If a manual HDFS operation moves a file to the HDFS Trashcan while the file handle is cached,
Impala still accesses the contents of that file. This is a change from prior behavior. Previously,
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_scan_node_codegen_threshold.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_scan_node_codegen_threshold.html b/docs/build/html/topics/impala_scan_node_codegen_threshold.html
index de531e8..5b5a057 100644
--- a/docs/build/html/topics/impala_scan_node_codegen_threshold.html
+++ b/docs/build/html/topics/impala_scan_node_codegen_threshold.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="scan_node_codegen_threshold"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>SCAN_NODE_CODEGEN_THRESHOLD Query Option (Impala 2.5 or higher only)</title></head><body id="scan_node_codegen_threshold"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="scan_node_codegen_threshold"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>SCAN_NODE_CODEGEN_THRESHOLD Query Option (Impala 2.5 or higher only)</title></head><body id="scan_node_codegen_threshold"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">SCAN_NODE_CODEGEN_THRESHOLD Query Option (<span class="keyword">Impala 2.5</span> or higher only)</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_schedule_random_replica.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_schedule_random_replica.html b/docs/build/html/topics/impala_schedule_random_replica.html
index 999e332..40c0ce5 100644
--- a/docs/build/html/topics/impala_schedule_random_replica.html
+++ b/docs/build/html/topics/impala_schedule_random_replica.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="schedule_random_replica"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>SCHEDULE_RANDOM_REPLICA Query Option (Impala 2.5 or higher only)</title></head><body id="schedule_random_replica"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="schedule_random_replica"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>SCHEDULE_RANDOM_REPLICA Query Option (Impala 2.5 or higher only)</title></head><body id="schedule_random_replica"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">SCHEDULE_RANDOM_REPLICA Query Option (<span class="keyword">Impala 2.5</span> or higher only)</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_schema_design.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_schema_design.html b/docs/build/html/topics/impala_schema_design.html
index e93a6d7..8dbdac2 100644
--- a/docs/build/html/topics/impala_schema_design.html
+++ b/docs/build/html/topics/impala_schema_design.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_planning.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="schema_design"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Guidelines for Designing Impala Schemas</title></head><body id="schema_design"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_planning.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="schema_design"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Guidelines for Designing Impala Schemas</title></head><body id="schema_design"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Guidelines for Designing Impala Schemas</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_schema_objects.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_schema_objects.html b/docs/build/html/topics/impala_schema_objects.html
index 31f29a3..cd17f3c 100644
--- a/docs/build/html/topics/impala_schema_objects.html
+++ b/docs/build/html/topics/impala_schema_objects.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_aliases.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_databases.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_functions_overview.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_identifiers.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_tables.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_views.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name=
"DC.Format" content="XHTML"><meta name="DC.Identifier" content="schema_objects"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Schema Objects and Object Names</title></head><body id="schema_objects"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_aliases.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_databases.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_functions_overview.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_identifiers.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_tables.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_views.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name=
"DC.Format" content="XHTML"><meta name="DC.Identifier" content="schema_objects"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Schema Objects and Object Names</title></head><body id="schema_objects"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Impala Schema Objects and Object Names</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_scratch_limit.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_scratch_limit.html b/docs/build/html/topics/impala_scratch_limit.html
index 20774bd..f08e30e 100644
--- a/docs/build/html/topics/impala_scratch_limit.html
+++ b/docs/build/html/topics/impala_scratch_limit.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="scratch_limit"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>SCRATCH_LIMIT Query Option</title></head><body id="scratch_limit"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="scratch_limit"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>SCRATCH_LIMIT Query Option</title></head><body id="scratch_limit"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">SCRATCH_LIMIT Query Option</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_security.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_security.html b/docs/build/html/topics/impala_security.html
index 74d147a..75fbda6 100644
--- a/docs/build/html/topics/impala_security.html
+++ b/docs/build/html/topics/impala_security.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_security_guidelines.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_security_files.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_security_install.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_security_metastore.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_security_webui.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_ssl.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_authorization.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_authentication.html"><meta name="DC.Relation" scheme="URI" content="../topics/i
mpala_auditing.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_lineage.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="security"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Security</title></head><body id="security"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_security_guidelines.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_security_files.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_security_install.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_security_metastore.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_security_webui.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_ssl.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_authorization.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_authentication.html"><meta name="DC.Relation" scheme="URI" content="../topics/i
mpala_auditing.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_lineage.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="security"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Security</title></head><body id="security"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1"><span class="ph">Impala Security</span></h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_security_files.html
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diff --git a/docs/build/html/topics/impala_security_files.html b/docs/build/html/topics/impala_security_files.html
index 67bb675..0936ea3 100644
--- a/docs/build/html/topics/impala_security_files.html
+++ b/docs/build/html/topics/impala_security_files.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_security.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="secure_files"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Securing Impala Data and Log Files</title></head><body id="secure_files"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_security.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="secure_files"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Securing Impala Data and Log Files</title></head><body id="secure_files"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Securing Impala Data and Log Files</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_security_guidelines.html
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diff --git a/docs/build/html/topics/impala_security_guidelines.html b/docs/build/html/topics/impala_security_guidelines.html
index 771fb56..e67a660 100644
--- a/docs/build/html/topics/impala_security_guidelines.html
+++ b/docs/build/html/topics/impala_security_guidelines.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_security.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="security_guidelines"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Security Guidelines for Impala</title></head><body id="security_guidelines"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_security.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="security_guidelines"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Security Guidelines for Impala</title></head><body id="security_guidelines"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Security Guidelines for Impala</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_security_install.html
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diff --git a/docs/build/html/topics/impala_security_install.html b/docs/build/html/topics/impala_security_install.html
index 2b2042b..487b2d8 100644
--- a/docs/build/html/topics/impala_security_install.html
+++ b/docs/build/html/topics/impala_security_install.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_security.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="security_install"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Installation Considerations for Impala Security</title></head><body id="security_install"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_security.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="security_install"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Installation Considerations for Impala Security</title></head><body id="security_install"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Installation Considerations for Impala Security</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_security_metastore.html
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diff --git a/docs/build/html/topics/impala_security_metastore.html b/docs/build/html/topics/impala_security_metastore.html
index 1c2289d..dfd5d64 100644
--- a/docs/build/html/topics/impala_security_metastore.html
+++ b/docs/build/html/topics/impala_security_metastore.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_security.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="security_metastore"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Securing the Hive Metastore Database</title></head><body id="security_metastore"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_security.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="security_metastore"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Securing the Hive Metastore Database</title></head><body id="security_metastore"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Securing the Hive Metastore Database</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_security_webui.html
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diff --git a/docs/build/html/topics/impala_security_webui.html b/docs/build/html/topics/impala_security_webui.html
index f0ddedf..21d21d4 100644
--- a/docs/build/html/topics/impala_security_webui.html
+++ b/docs/build/html/topics/impala_security_webui.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_security.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="security_webui"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Securing the Impala Web User Interface</title></head><body id="security_webui"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_security.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="security_webui"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Securing the Impala Web User Interface</title></head><body id="security_webui"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Securing the Impala Web User Interface</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_select.html
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diff --git a/docs/build/html/topics/impala_select.html b/docs/build/html/topics/impala_select.html
index 8b82f82..382bd43 100644
--- a/docs/build/html/topics/impala_select.html
+++ b/docs/build/html/topics/impala_select.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_joins.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_order_by.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_group_by.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_having.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_limit.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_offset.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_union.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_subqueries.html"><meta name="DC.Relation" scheme="U
RI" content="../topics/impala_tablesample.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_with.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_distinct.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_hints.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="select"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>SELECT Statement</title></head><body id="select"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_joins.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_order_by.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_group_by.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_having.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_limit.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_offset.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_union.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_subqueries.html"><meta name="DC.Relation" scheme="U
RI" content="../topics/impala_tablesample.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_with.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_distinct.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="select"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>SELECT Statement</title></head><body id="select"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">SELECT Statement</h1>
@@ -233,4 +233,4 @@ table_reference := { <var class="keyword varname">table_name</var> | (<var class
</div>
-<nav role="navigation" class="related-links"><ul class="ullinks"><li class="link ulchildlink"><strong><a href="../topics/impala_joins.html">Joins in Impala SELECT Statements</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_order_by.html">ORDER BY Clause</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_group_by.html">GROUP BY Clause</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_having.html">HAVING Clause</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_limit.html">LIMIT Clause</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_offset.html">OFFSET Clause</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_union.html">UNION Clause</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_subqueries.html">Subqueries in Impala SELECT Statements</a></strong><
br></li><li class="link ulchildlink"><strong><a href="../topics/impala_tablesample.html">TABLESAMPLE Clause</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_with.html">WITH Clause</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_distinct.html">DISTINCT Operator</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_hints.html">Query Hints in Impala SELECT Statements</a></strong><br></li></ul><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_langref_sql.html">Impala SQL Statements</a></div></div></nav></article></main></body></html>
\ No newline at end of file
+<nav role="navigation" class="related-links"><ul class="ullinks"><li class="link ulchildlink"><strong><a href="../topics/impala_joins.html">Joins in Impala SELECT Statements</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_order_by.html">ORDER BY Clause</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_group_by.html">GROUP BY Clause</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_having.html">HAVING Clause</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_limit.html">LIMIT Clause</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_offset.html">OFFSET Clause</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_union.html">UNION Clause</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_subqueries.html">Subqueries in Impala SELECT Statements</a></strong><
br></li><li class="link ulchildlink"><strong><a href="../topics/impala_tablesample.html">TABLESAMPLE Clause</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_with.html">WITH Clause</a></strong><br></li><li class="link ulchildlink"><strong><a href="../topics/impala_distinct.html">DISTINCT Operator</a></strong><br></li></ul><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_langref_sql.html">Impala SQL Statements</a></div></div></nav></article></main></body></html>
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_seqfile.html
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diff --git a/docs/build/html/topics/impala_seqfile.html b/docs/build/html/topics/impala_seqfile.html
index 931dcf6..ba6d878 100644
--- a/docs/build/html/topics/impala_seqfile.html
+++ b/docs/build/html/topics/impala_seqfile.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_file_formats.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="seqfile"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Using the SequenceFile File Format with Impala Tables</title></head><body id="seqfile"><main role="main"><article role="article" aria-labelledby="seqfile__sequencefile">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_file_formats.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="seqfile"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Using the SequenceFile File Format with Impala Tables</title></head><body id="seqfile"><main role="main"><article role="article" aria-labelledby="seqfile__sequencefile">
<h1 class="title topictitle1" id="seqfile__sequencefile">Using the SequenceFile File Format with Impala Tables</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_set.html
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diff --git a/docs/build/html/topics/impala_set.html b/docs/build/html/topics/impala_set.html
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--- a/docs/build/html/topics/impala_set.html
+++ b/docs/build/html/topics/impala_set.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="set"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>SET Statement</title></head><body id="set"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="set"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>SET Statement</title></head><body id="set"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">SET Statement</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_shell_commands.html
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diff --git a/docs/build/html/topics/impala_shell_commands.html b/docs/build/html/topics/impala_shell_commands.html
index fe852aa..88ab35e 100644
--- a/docs/build/html/topics/impala_shell_commands.html
+++ b/docs/build/html/topics/impala_shell_commands.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_impala_shell.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="shell_commands"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>impala-shell Command Reference</title></head><body id="shell_commands"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_impala_shell.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="shell_commands"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>impala-shell Command Reference</title></head><body id="shell_commands"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">impala-shell Command Reference</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_shell_options.html
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diff --git a/docs/build/html/topics/impala_shell_options.html b/docs/build/html/topics/impala_shell_options.html
index c7d5a02..cfb9a6b 100644
--- a/docs/build/html/topics/impala_shell_options.html
+++ b/docs/build/html/topics/impala_shell_options.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_impala_shell.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="shell_options"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>impala-shell Configuration Options</title></head><body id="shell_options"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_impala_shell.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="shell_options"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>impala-shell Configuration Options</title></head><body id="shell_options"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">impala-shell Configuration Options</h1>
@@ -74,6 +74,35 @@
<tr class="row">
<td class="entry nocellnorowborder" headers="shell_option_summary__entry__1 ">
<p class="p">
+ -b or
+ </p>
+ <p class="p">
+ --kerberos_host_fqdn
+ </p>
+ </td>
+ <td class="entry nocellnorowborder" headers="shell_option_summary__entry__2 ">
+ <p class="p">
+ kerberos_host_fqdn=
+ </p>
+ <p class="p">
+ <var class="keyword varname">load-balancer-hostname</var>
+ </p>
+ </td>
+ <td class="entry nocellnorowborder" headers="shell_option_summary__entry__3 ">
+ <p class="p">
+ If set, the setting overrides the expected hostname of the
+ Impala daemon's Kerberos service principal.
+ <span class="keyword cmdname">impala-shell</span> will check that the server's
+ principal matches this hostname. This may be used when
+ <code class="ph codeph">impalad</code> is configured to be accessed via a
+ load-balancer, but it is desired for impala-shell to talk to a
+ specific <code class="ph codeph">impalad</code> directly.
+ </p>
+ </td>
+ </tr>
+ <tr class="row">
+ <td class="entry nocellnorowborder" headers="shell_option_summary__entry__1 ">
+ <p class="p">
--print_header
</p>
</td>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_shell_running_commands.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_shell_running_commands.html b/docs/build/html/topics/impala_shell_running_commands.html
index 40fd0c7..751a647 100644
--- a/docs/build/html/topics/impala_shell_running_commands.html
+++ b/docs/build/html/topics/impala_shell_running_commands.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_impala_shell.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="shell_running_commands"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Running Commands and SQL Statements in impala-shell</title></head><body id="shell_running_commands"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_impala_shell.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="shell_running_commands"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Running Commands and SQL Statements in impala-shell</title></head><body id="shell_running_commands"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Running Commands and SQL Statements in impala-shell</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_show.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_show.html b/docs/build/html/topics/impala_show.html
index 54de405..bfaa004 100644
--- a/docs/build/html/topics/impala_show.html
+++ b/docs/build/html/topics/impala_show.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version"
content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="show"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>SHOW Statement</title></head><body id="show"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version"
content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="show"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>SHOW Statement</title></head><body id="show"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">SHOW Statement</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_shuffle_distinct_exprs.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_shuffle_distinct_exprs.html b/docs/build/html/topics/impala_shuffle_distinct_exprs.html
new file mode 100644
index 0000000..67cf1b4
--- /dev/null
+++ b/docs/build/html/topics/impala_shuffle_distinct_exprs.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html
+ SYSTEM "about:legacy-compat">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="shuffle_distinct_exprs"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>SHUFFLE_DISTINCT_EXPRS Query Option</title></head><body id="shuffle_distinct_exprs"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+
+ <h1 class="title topictitle1" id="ariaid-title1">SHUFFLE_DISTINCT_EXPRS Query Option</h1>
+
+
+
+
+
+ <div class="body conbody">
+
+ <p class="p">
+ The <code class="ph codeph">SHUFFLE_DISTINCT_EXPRS</code> query option controls the
+ shuffling behavior when a query has both grouping and distinct expressions.
+ Impala can optionally include the distinct expressions in the hash exchange
+ to spread the data among more nodes. However, this plan requires one more
+ hash exchange phase.
+ </p>
+
+ <p class="p">
+ It is recommended that you turn off this option if the NDVs of the grouping
+ expressions are high.
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Type:</strong> Boolean; recognized values are 1 and 0, or <code class="ph codeph">true</code> and <code class="ph codeph">false</code>;
+ any other value interpreted as <code class="ph codeph">false</code>
+ </p>
+
+ <p class="p">
+ <strong class="ph b">Default:</strong> <code class="ph codeph">false</code>
+ </p>
+
+ </div>
+
+<nav role="navigation" class="related-links"><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_query_options.html">Query Options for the SET Statement</a></div></div></nav></article></main></body></html>
[10/15] impala git commit: [DOCS] Add Impala docs from branch 2.x
Posted by mi...@apache.org.
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_float.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_float.html b/docs/build/html/topics/impala_float.html
index 1981a33..f4a6293 100644
--- a/docs/build/html/topics/impala_float.html
+++ b/docs/build/html/topics/impala_float.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="float"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>FLOAT Data Type</title></head><body id="float"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datatypes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="float"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>FLOAT Data Type</title></head><body id="float"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">FLOAT Data Type</h1>
@@ -44,11 +44,13 @@
<code class="ph codeph">BIGINT</code>, <code class="ph codeph">STRING</code>, <code class="ph codeph">TIMESTAMP</code>, or <code class="ph codeph">BOOLEAN</code>.
You can use exponential notation in <code class="ph codeph">FLOAT</code> literals or when casting from
<code class="ph codeph">STRING</code>, for example <code class="ph codeph">1.0e6</code> to represent one million.
- <span class="ph">Casting an integer or floating-point value <code class="ph codeph">N</code> to
+ <span class="ph">
+ Casting an integer or floating-point value <code class="ph codeph">N</code> to
<code class="ph codeph">TIMESTAMP</code> produces a value that is <code class="ph codeph">N</code> seconds past the start of the epoch
date (January 1, 1970). By default, the result value represents a date and time in the UTC time zone.
- If the setting <code class="ph codeph">-use_local_tz_for_unix_timestamp_conversions=true</code> is in effect,
- the resulting <code class="ph codeph">TIMESTAMP</code> represents a date and time in the local time zone.</span>
+ If the setting <code class="ph codeph">--use_local_tz_for_unix_timestamp_conversions=true</code> is in effect,
+ the resulting <code class="ph codeph">TIMESTAMP</code> represents a date and time in the local time zone.
+ </span>
</p>
<p class="p">
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_functions.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_functions.html b/docs/build/html/topics/impala_functions.html
index a30b320..95ecded 100644
--- a/docs/build/html/topics/impala_functions.html
+++ b/docs/build/html/topics/impala_functions.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_math_functions.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_bit_functions.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_conversion_functions.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datetime_functions.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_conditional_functions.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_string_functions.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_misc_functions.html"><meta name="DC.Relation" scheme="URI" content=
"../topics/impala_aggregate_functions.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_analytic_functions.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_udf.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="builtins"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Built-In Functions</title></head><body id="builtins"><main role="main"><article role="article" aria-labelledby="builtins__title_functions">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_math_functions.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_bit_functions.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_conversion_functions.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_datetime_functions.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_conditional_functions.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_string_functions.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_misc_functions.html"><meta name="DC.Relation" scheme="URI" content=
"../topics/impala_aggregate_functions.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_analytic_functions.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_udf.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="builtins"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Impala Built-In Functions</title></head><body id="builtins"><main role="main"><article role="article" aria-labelledby="builtins__title_functions">
<h1 class="title topictitle1" id="builtins__title_functions">Impala Built-In Functions</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_functions_overview.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_functions_overview.html b/docs/build/html/topics/impala_functions_overview.html
index 763b5b3..6f529b6 100644
--- a/docs/build/html/topics/impala_functions_overview.html
+++ b/docs/build/html/topics/impala_functions_overview.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_schema_objects.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="functions"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Overview of Impala Functions</title></head><body id="functions"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_schema_objects.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="functions"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Overview of Impala Functions</title></head><body id="functions"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Overview of Impala Functions</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_grant.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_grant.html b/docs/build/html/topics/impala_grant.html
index df8fa19..ac44994 100644
--- a/docs/build/html/topics/impala_grant.html
+++ b/docs/build/html/topics/impala_grant.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="grant"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>GRANT Statement (Impala 2.0 or higher only)</title></head><body id="grant"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="grant"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>GRANT Statement (Impala 2.0 or higher only)</title></head><body id="grant"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">GRANT Statement (<span class="keyword">Impala 2.0</span> or higher only)</h1>
@@ -113,16 +113,38 @@ object_type ::= TABLE | DATABASE | SERVER | URI
<p class="p">
<strong class="ph b">Kudu considerations:</strong>
</p>
- <p class="p">
- Access to Kudu tables must be granted to and revoked from roles as usual.
- Only users with <code class="ph codeph">ALL</code> privileges on <code class="ph codeph">SERVER</code> can create external Kudu tables.
- Currently, access to a Kudu table is <span class="q">"all or nothing"</span>:
- enforced at the table level rather than the column level, and applying to all
- SQL operations rather than individual statements such as <code class="ph codeph">INSERT</code>.
+ <div class="p">
+ Access to Kudu tables must be granted to and revoked from roles with the
+ following considerations:
+ <ul class="ul">
+ <li class="li">
+ Only users with the <code class="ph codeph">ALL</code> privilege on
+ <code class="ph codeph">SERVER</code> can create external Kudu tables.
+ </li>
+ <li class="li">
+ The <code class="ph codeph">ALL</code> privileges on <code class="ph codeph">SERVER</code> is
+ required to specify the <code class="ph codeph">kudu.master_addresses</code>
+ property in the <code class="ph codeph">CREATE TABLE</code> statements for managed
+ tables as well as external tables.
+ </li>
+ <li class="li">
+ Access to Kudu tables is enforced at the table level and at the
+ column level.
+ </li>
+ <li class="li">
+ The <code class="ph codeph">SELECT</code>- and <code class="ph codeph">INSERT</code>-specific
+ permissions are supported.
+ </li>
+ <li class="li">
+ The <code class="ph codeph">DELETE</code>, <code class="ph codeph">UPDATE</code>, and
+ <code class="ph codeph">UPSERT</code> operations require the <code class="ph codeph">ALL</code>
+ privilege.
+ </li>
+ </ul>
Because non-SQL APIs can access Kudu data without going through Sentry
authorization, currently the Sentry support is considered preliminary
and subject to change.
- </p>
+ </div>
<p class="p">
<strong class="ph b">Related information:</strong>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_group_by.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_group_by.html b/docs/build/html/topics/impala_group_by.html
index 51d1cbe..e198097 100644
--- a/docs/build/html/topics/impala_group_by.html
+++ b/docs/build/html/topics/impala_group_by.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_select.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="group_by"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>GROUP BY Clause</title></head><body id="group_by"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_select.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="group_by"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>GROUP BY Clause</title></head><body id="group_by"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">GROUP BY Clause</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_group_concat.html
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diff --git a/docs/build/html/topics/impala_group_concat.html b/docs/build/html/topics/impala_group_concat.html
index fbfb000..2417bb4 100644
--- a/docs/build/html/topics/impala_group_concat.html
+++ b/docs/build/html/topics/impala_group_concat.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_aggregate_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="group_concat"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>GROUP_CONCAT Function</title></head><body id="group_concat"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_aggregate_functions.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="group_concat"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>GROUP_CONCAT Function</title></head><body id="group_concat"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">GROUP_CONCAT Function</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_hadoop.html
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diff --git a/docs/build/html/topics/impala_hadoop.html b/docs/build/html/topics/impala_hadoop.html
index 0a6c178..a4bbf94 100644
--- a/docs/build/html/topics/impala_hadoop.html
+++ b/docs/build/html/topics/impala_hadoop.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_concepts.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="intro_hadoop"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>How Impala Fits Into the Hadoop Ecosystem</title></head><body id="intro_hadoop"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_concepts.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="intro_hadoop"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>How Impala Fits Into the Hadoop Ecosystem</title></head><body id="intro_hadoop"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">How Impala Fits Into the Hadoop Ecosystem</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_having.html
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diff --git a/docs/build/html/topics/impala_having.html b/docs/build/html/topics/impala_having.html
index 8d9e996..45e9ee6 100644
--- a/docs/build/html/topics/impala_having.html
+++ b/docs/build/html/topics/impala_having.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_select.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="having"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>HAVING Clause</title></head><body id="having"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_select.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="having"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>HAVING Clause</title></head><body id="having"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">HAVING Clause</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_hbase.html
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diff --git a/docs/build/html/topics/impala_hbase.html b/docs/build/html/topics/impala_hbase.html
index 6d258ce..a44c020 100644
--- a/docs/build/html/topics/impala_hbase.html
+++ b/docs/build/html/topics/impala_hbase.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.
8.x"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="impala_hbase"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Using Impala to Query HBase Tables</title></head><body id="impala_hbase"><main role="main"><article role="article" aria-labelledby="impala_hbase__hbase">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.
12x"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="impala_hbase"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Using Impala to Query HBase Tables</title></head><body id="impala_hbase"><main role="main"><article role="article" aria-labelledby="impala_hbase__hbase">
<h1 class="title topictitle1" id="impala_hbase__hbase">Using Impala to Query HBase Tables</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_hbase_cache_blocks.html
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diff --git a/docs/build/html/topics/impala_hbase_cache_blocks.html b/docs/build/html/topics/impala_hbase_cache_blocks.html
index 3d63649..6d2c898 100644
--- a/docs/build/html/topics/impala_hbase_cache_blocks.html
+++ b/docs/build/html/topics/impala_hbase_cache_blocks.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="hbase_cache_blocks"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>HBASE_CACHE_BLOCKS Query Option</title></head><body id="hbase_cache_blocks"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="hbase_cache_blocks"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>HBASE_CACHE_BLOCKS Query Option</title></head><body id="hbase_cache_blocks"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">HBASE_CACHE_BLOCKS Query Option</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_hbase_caching.html
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diff --git a/docs/build/html/topics/impala_hbase_caching.html b/docs/build/html/topics/impala_hbase_caching.html
index e3ebcf4..8a135cf 100644
--- a/docs/build/html/topics/impala_hbase_caching.html
+++ b/docs/build/html/topics/impala_hbase_caching.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="hbase_caching"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>HBASE_CACHING Query Option</title></head><body id="hbase_caching"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_query_options.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="hbase_caching"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>HBASE_CACHING Query Option</title></head><body id="hbase_caching"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">HBASE_CACHING Query Option</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_hints.html
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diff --git a/docs/build/html/topics/impala_hints.html b/docs/build/html/topics/impala_hints.html
index 767ab5e..388cefe 100644
--- a/docs/build/html/topics/impala_hints.html
+++ b/docs/build/html/topics/impala_hints.html
@@ -1,23 +1,21 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_select.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="hints"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Query Hints in Impala SELECT Statements</title></head><body id="hints"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_langref_sql.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="hints"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Optimizer Hints</title></head><body id="hints"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
- <h1 class="title topictitle1" id="ariaid-title1">Query Hints in Impala SELECT Statements</h1>
+ <h1 class="title topictitle1" id="ariaid-title1">Optimizer Hints</h1>
<div class="body conbody">
<p class="p">
-
- The Impala SQL dialect supports query hints, for fine-tuning the inner workings of queries. Specify hints as
- a temporary workaround for expensive queries, where missing statistics or other factors cause inefficient
- performance.
- </p>
+ The Impala SQL supports
+ query hints, for fine-tuning the inner workings of queries. Specify hints
+ as a temporary workaround for expensive queries, where missing statistics
+ or other factors cause inefficient performance. </p>
- <p class="p">
- Hints are most often used for the most resource-intensive kinds of Impala queries:
- </p>
+ <p class="p"> Hints are most often used for the resource-intensive Impala queries,
+ such as: </p>
<ul class="ul">
<li class="li">
@@ -35,39 +33,18 @@
<strong class="ph b">Syntax:</strong>
</p>
- <div class="p">
- You can also represent the hints as keywords surrounded by <code class="ph codeph">[]</code>
- square brackets; include the brackets in the text of the SQL statement.
- <div class="note note note_note"><span class="note__title notetitle">Note:</span>
- The square bracket style of hint is now deprecated and might be removed in
- a future release. For that reason, any newly added hints are not available
- with the square bracket syntax.
- </div>
- </div>
-
-<pre class="pre codeblock"><code>SELECT STRAIGHT_JOIN <var class="keyword varname">select_list</var> FROM
-<var class="keyword varname">join_left_hand_table</var>
- JOIN [{ /* +BROADCAST */ | /* +SHUFFLE */ }]
-<var class="keyword varname">join_right_hand_table</var>
-<var class="keyword varname">remainder_of_query</var>;
-
-INSERT <var class="keyword varname">insert_clauses</var>
- [{ /* +SHUFFLE */ | /* +NOSHUFFLE */ }]
- [<span class="ph">/* +CLUSTERED */</span>]
- SELECT <var class="keyword varname">remainder_of_query</var>;
-</code></pre>
-
- <p class="p">
- In <span class="keyword">Impala 2.0</span> and higher, you can also specify the hints inside comments that use
- either the <code class="ph codeph">/* */</code> or <code class="ph codeph">--</code> notation. Specify a <code class="ph codeph">+</code> symbol
- immediately before the hint name. Recently added hints are only available using the <code class="ph codeph">/* */</code>
- and <code class="ph codeph">--</code> notation.
- For clarity, the <code class="ph codeph">/* */</code> and <code class="ph codeph">--</code> styles
- are used in the syntax and examples throughout this section.
- With the <code class="ph codeph">/* */</code> or <code class="ph codeph">--</code> notation for
- hints, specify a <code class="ph codeph">+</code> symbol immediately before the first hint name.
- Multiple hints can be specified separated by commas, for example
- <code class="ph codeph">/* +clustered,shuffle */</code>
+ <p class="p"> In <span class="keyword">Impala 2.0</span> and higher, you can
+ specify the hints inside comments that use either the <code class="ph codeph">/*
+ */</code> or <code class="ph codeph">--</code> notation. Specify a
+ <code class="ph codeph">+</code> symbol immediately before the hint name. Recently
+ added hints are only available using the <code class="ph codeph">/* */</code> and
+ <code class="ph codeph">--</code> notation. For clarity, the <code class="ph codeph">/* */</code>
+ and <code class="ph codeph">--</code> styles are used in the syntax and examples
+ throughout this section. With the <code class="ph codeph">/* */</code> or
+ <code class="ph codeph">--</code> notation for hints, specify a <code class="ph codeph">+</code>
+ symbol immediately before the first hint name. Multiple hints can be
+ specified separated by commas, for example <code class="ph codeph">/* +clustered,shuffle
+ */</code>
</p>
<pre class="pre codeblock"><code>SELECT STRAIGHT_JOIN <var class="keyword varname">select_list</var> FROM
@@ -90,6 +67,26 @@ INSERT <var class="keyword varname">insert_clauses</var>
-- +SHUFFLE|NOSHUFFLE
SELECT <var class="keyword varname">remainder_of_query</var>;
+<span class="ph">
+INSERT /* +SHUFFLE|NOSHUFFLE */
+ <var class="keyword varname">insert_clauses</var>
+ SELECT <var class="keyword varname">remainder_of_query</var>;</span>
+
+<span class="ph">
+INSERT -- +SHUFFLE|NOSHUFFLE
+ <var class="keyword varname">insert_clauses</var>
+ SELECT <var class="keyword varname">remainder_of_query</var>;</span>
+
+<span class="ph">
+UPSERT /* +SHUFFLE|NOSHUFFLE */
+ <var class="keyword varname">upsert_clauses</var>
+ SELECT <var class="keyword varname">remainder_of_query</var>;</span>
+
+<span class="ph">
+UPSERT -- +SHUFFLE|NOSHUFFLE
+ <var class="keyword varname">upsert_clauses</var>
+ SELECT <var class="keyword varname">remainder_of_query</var>;</span>
+
<span class="ph">SELECT <var class="keyword varname">select_list</var> FROM
<var class="keyword varname">table_ref</var>
/* +{SCHEDULE_CACHE_LOCAL | SCHEDULE_DISK_LOCAL | SCHEDULE_REMOTE}
@@ -103,6 +100,59 @@ INSERT <var class="keyword varname">insert_clauses</var>
INSERT <var class="keyword varname">insert_clauses</var>
/* +CLUSTERED */
SELECT <var class="keyword varname">remainder_of_query</var>;</span>
+
+<span class="ph">INSERT -- +CLUSTERED
+ <var class="keyword varname">insert_clauses</var>
+ SELECT <var class="keyword varname">remainder_of_query</var>;
+
+INSERT /* +CLUSTERED */
+ <var class="keyword varname">insert_clauses</var>
+ SELECT <var class="keyword varname">remainder_of_query</var>;
+
+UPSERT -- +CLUSTERED
+ <var class="keyword varname">upsert_clauses</var>
+ SELECT <var class="keyword varname">remainder_of_query</var>;
+
+UPSERT /* +CLUSTERED */
+ <var class="keyword varname">upsert_clauses</var>
+ SELECT <var class="keyword varname">remainder_of_query</var>;</span>
+
+CREATE /* +SHUFFLE|NOSHUFFLE */
+ <var class="keyword varname">table_clauses</var>
+ AS SELECT <var class="keyword varname">remainder_of_query</var>;
+
+CREATE -- +SHUFFLE|NOSHUFFLE
+ <var class="keyword varname">table_clauses</var>
+ AS SELECT <var class="keyword varname">remainder_of_query</var>;
+
+CREATE /* +CLUSTER|NOCLUSTER */
+ <var class="keyword varname">table_clauses</var>
+ AS SELECT <var class="keyword varname">remainder_of_query</var>;
+
+CREATE -- +CLUSTER|NOCLUSTER
+ <var class="keyword varname">table_clauses</var>
+ AS SELECT <var class="keyword varname">remainder_of_query</var>;
+</code></pre>
+ <p class="p">The square bracket style hints are supported for backward compatibility,
+ but the syntax is deprecated and will be removed in a future release. For
+ that reason, any newly added hints are not available with the square
+ bracket syntax.</p>
+ <pre class="pre codeblock"><code>SELECT STRAIGHT_JOIN <var class="keyword varname">select_list</var> FROM
+<var class="keyword varname">join_left_hand_table</var>
+ JOIN [{ /* +BROADCAST */ | /* +SHUFFLE */ }]
+<var class="keyword varname">join_right_hand_table</var>
+<var class="keyword varname">remainder_of_query</var>;
+
+INSERT <var class="keyword varname">insert_clauses</var>
+ [{ /* +SHUFFLE */ | /* +NOSHUFFLE */ }]
+ [<span class="ph">/* +CLUSTERED */</span>]
+ SELECT <var class="keyword varname">remainder_of_query</var>;
+
+<span class="ph">
+UPSERT [{ /* +SHUFFLE */ | /* +NOSHUFFLE */ }]
+ [<span class="ph">/* +CLUSTERED */</span>]
+ <var class="keyword varname">upsert_clauses</var>
+ SELECT <var class="keyword varname">remainder_of_query</var>;</span>
</code></pre>
<p class="p">
@@ -169,72 +219,129 @@ INSERT <var class="keyword varname">insert_clauses</var>
</ul>
<p class="p">
- <strong class="ph b">Hints for INSERT ... SELECT queries:</strong>
+ <strong class="ph b">Hints for INSERT ... SELECT and CREATE TABLE AS SELECT (CTAS):</strong>
+ </p>
+ <p class="p" id="hints__insert_hints">
+ When inserting into partitioned tables, such as using the Parquet file
+ format, you can include a hint in the <code class="ph codeph">INSERT</code> or <code class="ph codeph">CREATE TABLE AS SELECT(CTAS)</code>
+ statements to fine-tune the overall performance of the operation and its
+ resource usage.</p>
+ <p class="p">
+ You would only use hints if an <code class="ph codeph">INSERT</code> or
+ <code class="ph codeph">CTAS</code> into a partitioned table was failing due to
+ capacity limits, or if such an operation was succeeding but with
+ less-than-optimal performance.
</p>
- <div class="p">
- When inserting into partitioned tables, especially using the Parquet file format, you can include a hint in
- the <code class="ph codeph">INSERT</code> statement to fine-tune the overall performance of the operation and its
- resource usage:
+ <ul class="ul">
+ <li class="li">
+ <code class="ph codeph">/* +SHUFFLE */</code> and <code class="ph codeph">/* +NOSHUFFLE */</code> Hints
<ul class="ul">
-
<li class="li">
- You would only use hints if an <code class="ph codeph">INSERT</code> into a partitioned Parquet table was
- failing due to capacity limits, or if such an <code class="ph codeph">INSERT</code> was succeeding but with
- less-than-optimal performance.
+ <code class="ph codeph">/* +SHUFFLE */</code> adds an exchange node, before
+ writing the data, which re-partitions the result of the
+ <code class="ph codeph">SELECT</code> based on the partitioning columns of the
+ target table. With this hint, only one node writes to a partition at
+ a time, minimizing the global number of simultaneous writes and the
+ number of memory buffers holding data for individual partitions.
+ This also reduces fragmentation, resulting in fewer files. Thus it
+ reduces overall resource usage of the <code class="ph codeph">INSERT</code> or
+ <code class="ph codeph">CTAS</code> operation and allows some operations to
+ succeed that otherwise would fail. It does involve some data
+ transfer between the nodes so that the data files for a particular
+ partition are all written on the same node.
+
+ <p class="p">
+ Use <code class="ph codeph">/* +SHUFFLE */</code> in cases where an <code class="ph codeph">INSERT</code>
+ or <code class="ph codeph">CTAS</code> statement fails or runs inefficiently due
+ to all nodes attempting to write data for all partitions.
+ </p>
+
+ <p class="p"> If the table is unpartitioned or every partitioning expression
+ is constant, then <code class="ph codeph">/* +SHUFFLE */</code> will cause every
+ write to happen on the coordinator node.
+ </p>
</li>
<li class="li">
- To use a hint to influence the join order, put the hint keyword <code class="ph codeph">/* +SHUFFLE */</code> or <code class="ph codeph">/* +NOSHUFFLE */</code>
- (including the square brackets) after the <code class="ph codeph">PARTITION</code> clause, immediately before the
- <code class="ph codeph">SELECT</code> keyword.
+ <code class="ph codeph">/* +NOSHUFFLE */</code> does not add exchange node before
+ inserting to partitioned tables and disables re-partitioning. So the
+ selected execution plan might be faster overall, but might also
+ produce a larger number of small data files or exceed capacity
+ limits, causing the <code class="ph codeph">INSERT</code> or <code class="ph codeph">CTAS</code>
+ operation to fail.
+
+ <p class="p"> Impala automatically uses the <code class="ph codeph">/*
+ +SHUFFLE */</code> method if any partition key column in the
+ source table, mentioned in the <code class="ph codeph">SELECT</code> clause,
+ does not have column statistics. In this case, use the <code class="ph codeph">/*
+ +NOSHUFFLE */</code> hint if you want to override this default
+ behavior.
+ </p>
</li>
<li class="li">
- <code class="ph codeph">/* +SHUFFLE */</code> selects an execution plan that reduces the number of files being written
- simultaneously to HDFS, and the number of memory buffers holding data for individual partitions. Thus
- it reduces overall resource usage for the <code class="ph codeph">INSERT</code> operation, allowing some
- <code class="ph codeph">INSERT</code> operations to succeed that otherwise would fail. It does involve some data
- transfer between the nodes so that the data files for a particular partition are all constructed on the
- same node.
- </li>
-
- <li class="li">
- <code class="ph codeph">/* +NOSHUFFLE */</code> selects an execution plan that might be faster overall, but might also
- produce a larger number of small data files or exceed capacity limits, causing the
- <code class="ph codeph">INSERT</code> operation to fail. Use <code class="ph codeph">/* +SHUFFLE */</code> in cases where an
- <code class="ph codeph">INSERT</code> statement fails or runs inefficiently due to all nodes attempting to construct
- data for all partitions.
- </li>
-
- <li class="li">
- Impala automatically uses the <code class="ph codeph">/* +SHUFFLE */</code> method if any partition key column in the
- source table, mentioned in the <code class="ph codeph">INSERT ... SELECT</code> query, does not have column
- statistics. In this case, only the <code class="ph codeph">/* +NOSHUFFLE */</code> hint would have any effect.
+ If column statistics are available for all partition key columns
+ in the source table mentioned in the <code class="ph codeph">INSERT ...
+ SELECT</code> or <code class="ph codeph">CTAS</code> query, Impala chooses
+ whether to use the <code class="ph codeph">/* +SHUFFLE */</code> or <code class="ph codeph">/*
+ +NOSHUFFLE */</code> technique based on the estimated number of
+ distinct values in those columns and the number of nodes involved in
+ the operation. In this case, you might need the <code class="ph codeph">/* +SHUFFLE
+ */</code> or the <code class="ph codeph">/* +NOSHUFFLE */</code> hint to
+ override the execution plan selected by Impala.
</li>
+ </ul>
+ </li>
+ <li class="li">
+ <code class="ph codeph">/* +CLUSTERED */</code> and <code class="ph codeph">/* +NOCLUSTERED
+ */</code> Hints
+ <ul class="ul">
<li class="li">
- If column statistics are available for all partition key columns in the source table mentioned in the
- <code class="ph codeph">INSERT ... SELECT</code> query, Impala chooses whether to use the <code class="ph codeph">/* +SHUFFLE */</code>
- or <code class="ph codeph">/* +NOSHUFFLE */</code> technique based on the estimated number of distinct values in those
- columns and the number of nodes involved in the <code class="ph codeph">INSERT</code> operation. In this case, you
- might need the <code class="ph codeph">/* +SHUFFLE */</code> or the <code class="ph codeph">/* +NOSHUFFLE */</code> hint to override the
- execution plan selected by Impala.
+ <code class="ph codeph">/* +CLUSTERED */</code> sorts data by the partition
+ columns before inserting to ensure that only one partition is
+ written at a time per node. Use this hint to reduce the number of
+ files kept open and the number of buffers kept in memory
+ simultaneously. This technique is primarily useful for inserts into
+ Parquet tables, where the large block size requires substantial
+ memory to buffer data for multiple output files at once. This hint
+ is available in <span class="keyword">Impala 2.8</span> or higher.
+
+ <p class="p">
+ Starting in <span class="keyword">Impala 3.0</span>, <code class="ph codeph">/*
+ +CLUSTERED */</code> is the default behavior for HDFS tables.
+ </p>
</li>
<li class="li">
- In <span class="keyword">Impala 2.8</span> or higher, you can make the
- <code class="ph codeph">INSERT</code> operation organize (<span class="q">"cluster"</span>)
- the data for each partition to avoid buffering data for multiple partitions
- and reduce the risk of an out-of-memory condition. Specify the hint as
- <code class="ph codeph">/* +CLUSTERED */</code>. This technique is primarily
- useful for inserts into Parquet tables, where the large block
- size requires substantial memory to buffer data for multiple
- output files at once.
+ <code class="ph codeph">/* +NOCLUSTERED */</code> does not sort by primary key
+ before insert. This hint is available in <span class="keyword">Impala 2.8</span> or higher.
+
+ <p class="p">
+ Use this hint when inserting to Kudu tables.
+ </p>
+
+ <p class="p">
+ In the versions lower than <span class="keyword">Impala 3.0</span>,
+ <code class="ph codeph">/* +NOCLUSTERED */</code> is the default in HDFS
+ tables.
+ </p>
</li>
-
</ul>
- </div>
+ </li>
+ </ul>
+
+ <p class="p">
+ Starting from <span class="keyword">Impala 2.9</span>, <code class="ph codeph">INSERT</code>
+ or <code class="ph codeph">UPSERT</code> operations into Kudu tables automatically have
+ an exchange and sort node added to the plan that partitions and sorts the
+ rows according to the partitioning/primary key scheme of the target table
+ (unless the number of rows to be inserted is small enough to trigger
+ single node execution). Use the<code class="ph codeph"> /* +NOCLUSTERED */</code> and
+ <code class="ph codeph">/* +NOSHUFFLE */</code> hints together to disable partitioning
+ and sorting before the rows are sent to Kudu.
+ </p>
<p class="p">
<strong class="ph b">Hints for scheduling of HDFS blocks:</strong>
@@ -378,4 +485,4 @@ INSERT <var class="keyword varname">insert_clauses</var>
performance considerations, see <a class="xref" href="impala_perf_joins.html#perf_joins">Performance Considerations for Join Queries</a>.
</p>
</div>
-<nav role="navigation" class="related-links"><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_select.html">SELECT Statement</a></div></div></nav></article></main></body></html>
\ No newline at end of file
+<nav role="navigation" class="related-links"><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_langref_sql.html">Impala SQL Statements</a></div></div></nav></article></main></body></html>
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_identifiers.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_identifiers.html b/docs/build/html/topics/impala_identifiers.html
index bcd96d4..098a265 100644
--- a/docs/build/html/topics/impala_identifiers.html
+++ b/docs/build/html/topics/impala_identifiers.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_schema_objects.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="identifiers"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Overview of Impala Identifiers</title></head><body id="identifiers"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_schema_objects.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="identifiers"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Overview of Impala Identifiers</title></head><body id="identifiers"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Overview of Impala Identifiers</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_impala_shell.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_impala_shell.html b/docs/build/html/topics/impala_impala_shell.html
index 97e13fb..fc20e2c 100644
--- a/docs/build/html/topics/impala_impala_shell.html
+++ b/docs/build/html/topics/impala_impala_shell.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_shell_options.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_connecting.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_shell_running_commands.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_shell_commands.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="impala_shell"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Using the Impala Shell (impala-shell Command)</title></head><body id=
"impala_shell"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_shell_options.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_connecting.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_shell_running_commands.html"><meta name="DC.Relation" scheme="URI" content="../topics/impala_shell_commands.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="impala_shell"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Using the Impala Shell (impala-shell Command)</title></head><body id=
"impala_shell"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1">Using the Impala Shell (impala-shell Command)</h1>
http://git-wip-us.apache.org/repos/asf/impala/blob/592fd85d/docs/build/html/topics/impala_incompatible_changes.html
----------------------------------------------------------------------
diff --git a/docs/build/html/topics/impala_incompatible_changes.html b/docs/build/html/topics/impala_incompatible_changes.html
index a193f64..9755608 100644
--- a/docs/build/html/topics/impala_incompatible_changes.html
+++ b/docs/build/html/topics/impala_incompatible_changes.html
@@ -1,6 +1,6 @@
<!DOCTYPE html
SYSTEM "about:legacy-compat">
-<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_release_notes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.8.x"><meta name="version" content="Impala 2.8.x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="incompatible_changes"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Incompatible Changes and Limitations in Apache Impala</title></head><body id="incompatible_changes"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
+<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2018"><meta name="DC.rights.owner" content="(C) Copyright 2018"><meta name="DC.Type" content="concept"><meta name="DC.Relation" scheme="URI" content="../topics/impala_release_notes.html"><meta name="prodname" content="Impala"><meta name="prodname" content="Impala"><meta name="version" content="Impala 2.12x"><meta name="version" content="Impala 2.12x"><meta name="DC.Format" content="XHTML"><meta name="DC.Identifier" content="incompatible_changes"><link rel="stylesheet" type="text/css" href="../commonltr.css"><title>Incompatible Changes and Limitations in Apache Impala</title></head><body id="incompatible_changes"><main role="main"><article role="article" aria-labelledby="ariaid-title1">
<h1 class="title topictitle1" id="ariaid-title1"><span class="ph">Incompatible Changes and Limitations in Apache Impala</span></h1>
@@ -23,9 +23,25 @@
<p class="p toc inpage"></p>
</div>
- <nav role="navigation" class="related-links"><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_release_notes.html">Impala Release Notes</a></div></div></nav><article class="topic concept nested1" aria-labelledby="ariaid-title2" id="incompatible_changes__incompatible_changes_211x">
+ <nav role="navigation" class="related-links"><div class="familylinks"><div class="parentlink"><strong>Parent topic:</strong> <a class="link" href="../topics/impala_release_notes.html">Impala Release Notes</a></div></div></nav><article class="topic concept nested1" aria-labelledby="ariaid-title2" id="incompatible_changes__incompatible_changes_212x">
- <h2 class="title topictitle2" id="ariaid-title2">Incompatible Changes Introduced in Impala 2.11.x</h2>
+ <h2 class="title topictitle2" id="ariaid-title2">Incompatible Changes Introduced in Impala 2.12.x</h2>
+
+ <div class="body conbody">
+
+ <p class="p">
+ For the full list of issues closed in this release, including any that introduce
+ behavior changes or incompatibilities, see the
+ <a class="xref" href="https://impala.apache.org/docs/changelog-2.12.html" target="_blank">changelog for <span class="keyword">Impala 2.12</span></a>.
+ </p>
+
+ </div>
+
+ </article>
+
+ <article class="topic concept nested1" aria-labelledby="ariaid-title3" id="incompatible_changes__incompatible_changes_211x">
+
+ <h2 class="title topictitle2" id="ariaid-title3">Incompatible Changes Introduced in Impala 2.11.x</h2>
<div class="body conbody">
@@ -39,9 +55,9 @@
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title3" id="incompatible_changes__incompatible_changes_210x">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title4" id="incompatible_changes__incompatible_changes_210x">
- <h2 class="title topictitle2" id="ariaid-title3">Incompatible Changes Introduced in Impala 2.10.x</h2>
+ <h2 class="title topictitle2" id="ariaid-title4">Incompatible Changes Introduced in Impala 2.10.x</h2>
<div class="body conbody">
@@ -55,9 +71,9 @@
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title4" id="incompatible_changes__incompatible_changes_29x">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title5" id="incompatible_changes__incompatible_changes_29x">
- <h2 class="title topictitle2" id="ariaid-title4">Incompatible Changes Introduced in Impala 2.9.x</h2>
+ <h2 class="title topictitle2" id="ariaid-title5">Incompatible Changes Introduced in Impala 2.9.x</h2>
<div class="body conbody">
@@ -73,9 +89,9 @@
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title5" id="incompatible_changes__incompatible_changes_28x">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title6" id="incompatible_changes__incompatible_changes_28x">
- <h2 class="title topictitle2" id="ariaid-title5">Incompatible Changes Introduced in Impala 2.8.x</h2>
+ <h2 class="title topictitle2" id="ariaid-title6">Incompatible Changes Introduced in Impala 2.8.x</h2>
<div class="body conbody">
<ul class="ul">
@@ -166,9 +182,9 @@
</div>
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title6" id="incompatible_changes__incompatible_changes_27x">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title7" id="incompatible_changes__incompatible_changes_27x">
- <h2 class="title topictitle2" id="ariaid-title6">Incompatible Changes Introduced in Impala 2.7.x</h2>
+ <h2 class="title topictitle2" id="ariaid-title7">Incompatible Changes Introduced in Impala 2.7.x</h2>
<div class="body conbody">
<ul class="ul">
@@ -190,9 +206,9 @@
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title7" id="incompatible_changes__incompatible_changes_26x">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title8" id="incompatible_changes__incompatible_changes_26x">
- <h2 class="title topictitle2" id="ariaid-title7">Incompatible Changes Introduced in Impala 2.6.x</h2>
+ <h2 class="title topictitle2" id="ariaid-title8">Incompatible Changes Introduced in Impala 2.6.x</h2>
<div class="body conbody">
<ul class="ul">
@@ -339,9 +355,9 @@
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title8" id="incompatible_changes__incompatible_changes_25x">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title9" id="incompatible_changes__incompatible_changes_25x">
- <h2 class="title topictitle2" id="ariaid-title8">Incompatible Changes Introduced in Impala 2.5.x</h2>
+ <h2 class="title topictitle2" id="ariaid-title9">Incompatible Changes Introduced in Impala 2.5.x</h2>
<div class="body conbody">
<ul class="ul">
@@ -427,9 +443,9 @@
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title9" id="incompatible_changes__incompatible_changes_24x">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title10" id="incompatible_changes__incompatible_changes_24x">
- <h2 class="title topictitle2" id="ariaid-title9">Incompatible Changes Introduced in Impala 2.4.x</h2>
+ <h2 class="title topictitle2" id="ariaid-title10">Incompatible Changes Introduced in Impala 2.4.x</h2>
<div class="body conbody">
<p class="p">
@@ -444,9 +460,9 @@
- <article class="topic concept nested1" aria-labelledby="ariaid-title10" id="incompatible_changes__incompatible_changes_23x">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title11" id="incompatible_changes__incompatible_changes_23x">
- <h2 class="title topictitle2" id="ariaid-title10">Incompatible Changes Introduced in Impala 2.3.x</h2>
+ <h2 class="title topictitle2" id="ariaid-title11">Incompatible Changes Introduced in Impala 2.3.x</h2>
<div class="body conbody">
@@ -514,9 +530,9 @@
- <article class="topic concept nested1" aria-labelledby="ariaid-title11" id="incompatible_changes__incompatible_changes_22x">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title12" id="incompatible_changes__incompatible_changes_22x">
- <h2 class="title topictitle2" id="ariaid-title11">Incompatible Changes Introduced in Impala 2.2.x</h2>
+ <h2 class="title topictitle2" id="ariaid-title12">Incompatible Changes Introduced in Impala 2.2.x</h2>
<div class="body conbody">
@@ -559,9 +575,9 @@
- <article class="topic concept nested1" aria-labelledby="ariaid-title12" id="incompatible_changes__incompatible_changes_21x">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title13" id="incompatible_changes__incompatible_changes_21x">
- <h2 class="title topictitle2" id="ariaid-title12">Incompatible Changes Introduced in Impala 2.1.x</h2>
+ <h2 class="title topictitle2" id="ariaid-title13">Incompatible Changes Introduced in Impala 2.1.x</h2>
<div class="body conbody">
@@ -604,9 +620,9 @@
- <article class="topic concept nested1" aria-labelledby="ariaid-title13" id="incompatible_changes__incompatible_changes_205">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title14" id="incompatible_changes__incompatible_changes_205">
- <h2 class="title topictitle2" id="ariaid-title13">Incompatible Changes Introduced in Impala 2.0.5</h2>
+ <h2 class="title topictitle2" id="ariaid-title14">Incompatible Changes Introduced in Impala 2.0.5</h2>
<div class="body conbody">
@@ -617,9 +633,9 @@
</div>
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title14" id="incompatible_changes__incompatible_changes_204">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title15" id="incompatible_changes__incompatible_changes_204">
- <h2 class="title topictitle2" id="ariaid-title14">Incompatible Changes Introduced in Impala 2.0.4</h2>
+ <h2 class="title topictitle2" id="ariaid-title15">Incompatible Changes Introduced in Impala 2.0.4</h2>
<div class="body conbody">
@@ -630,18 +646,18 @@
</div>
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title15" id="incompatible_changes__incompatible_changes_203">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title16" id="incompatible_changes__incompatible_changes_203">
- <h2 class="title topictitle2" id="ariaid-title15">Incompatible Changes Introduced in Impala 2.0.3</h2>
+ <h2 class="title topictitle2" id="ariaid-title16">Incompatible Changes Introduced in Impala 2.0.3</h2>
<div class="body conbody">
</div>
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title16" id="incompatible_changes__incompatible_changes_202">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title17" id="incompatible_changes__incompatible_changes_202">
- <h2 class="title topictitle2" id="ariaid-title16">Incompatible Changes Introduced in Impala 2.0.2</h2>
+ <h2 class="title topictitle2" id="ariaid-title17">Incompatible Changes Introduced in Impala 2.0.2</h2>
<div class="body conbody">
@@ -652,9 +668,9 @@
</div>
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title17" id="incompatible_changes__incompatible_changes_201">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title18" id="incompatible_changes__incompatible_changes_201">
- <h2 class="title topictitle2" id="ariaid-title17">Incompatible Changes Introduced in Impala 2.0.1</h2>
+ <h2 class="title topictitle2" id="ariaid-title18">Incompatible Changes Introduced in Impala 2.0.1</h2>
<div class="body conbody">
@@ -691,9 +707,9 @@
</div>
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title18" id="incompatible_changes__incompatible_changes_200">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title19" id="incompatible_changes__incompatible_changes_200">
- <h2 class="title topictitle2" id="ariaid-title18">Incompatible Changes Introduced in Impala 2.0.0</h2>
+ <h2 class="title topictitle2" id="ariaid-title19">Incompatible Changes Introduced in Impala 2.0.0</h2>
<div class="body conbody">
@@ -887,8 +903,8 @@
</div>
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title19" id="incompatible_changes__incompatible_changes_144">
- <h2 class="title topictitle2" id="ariaid-title19">Incompatible Changes Introduced in Impala 1.4.4</h2>
+ <article class="topic concept nested1" aria-labelledby="ariaid-title20" id="incompatible_changes__incompatible_changes_144">
+ <h2 class="title topictitle2" id="ariaid-title20">Incompatible Changes Introduced in Impala 1.4.4</h2>
<div class="body conbody">
<p class="p">
No incompatible changes.
@@ -897,9 +913,9 @@
</div>
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title20" id="incompatible_changes__incompatible_changes_143">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title21" id="incompatible_changes__incompatible_changes_143">
- <h2 class="title topictitle2" id="ariaid-title20">Incompatible Changes Introduced in Impala 1.4.3</h2>
+ <h2 class="title topictitle2" id="ariaid-title21">Incompatible Changes Introduced in Impala 1.4.3</h2>
<div class="body conbody">
@@ -911,9 +927,9 @@
</div>
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title21" id="incompatible_changes__incompatible_changes_142">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title22" id="incompatible_changes__incompatible_changes_142">
- <h2 class="title topictitle2" id="ariaid-title21">Incompatible Changes Introduced in Impala 1.4.2</h2>
+ <h2 class="title topictitle2" id="ariaid-title22">Incompatible Changes Introduced in Impala 1.4.2</h2>
<div class="body conbody">
@@ -924,9 +940,9 @@
</div>
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title22" id="incompatible_changes__incompatible_changes_141">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title23" id="incompatible_changes__incompatible_changes_141">
- <h2 class="title topictitle2" id="ariaid-title22">Incompatible Changes Introduced in Impala 1.4.1</h2>
+ <h2 class="title topictitle2" id="ariaid-title23">Incompatible Changes Introduced in Impala 1.4.1</h2>
<div class="body conbody">
@@ -936,9 +952,9 @@
</div>
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title23" id="incompatible_changes__incompatible_changes_140">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title24" id="incompatible_changes__incompatible_changes_140">
- <h2 class="title topictitle2" id="ariaid-title23">Incompatible Changes Introduced in Impala 1.4.0</h2>
+ <h2 class="title topictitle2" id="ariaid-title24">Incompatible Changes Introduced in Impala 1.4.0</h2>
<div class="body conbody">
@@ -1036,9 +1052,9 @@
</div>
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title24" id="incompatible_changes__incompatible_changes_133">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title25" id="incompatible_changes__incompatible_changes_133">
- <h2 class="title topictitle2" id="ariaid-title24">Incompatible Changes Introduced in Impala 1.3.3</h2>
+ <h2 class="title topictitle2" id="ariaid-title25">Incompatible Changes Introduced in Impala 1.3.3</h2>
<div class="body conbody">
@@ -1050,9 +1066,9 @@
</div>
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title25" id="incompatible_changes__incompatible_changes_132">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title26" id="incompatible_changes__incompatible_changes_132">
- <h2 class="title topictitle2" id="ariaid-title25">Incompatible Changes Introduced in Impala 1.3.2</h2>
+ <h2 class="title topictitle2" id="ariaid-title26">Incompatible Changes Introduced in Impala 1.3.2</h2>
<div class="body conbody">
@@ -1063,9 +1079,9 @@
</div>
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title26" id="incompatible_changes__incompatible_changes_131">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title27" id="incompatible_changes__incompatible_changes_131">
- <h2 class="title topictitle2" id="ariaid-title26">Incompatible Changes Introduced in Impala 1.3.1</h2>
+ <h2 class="title topictitle2" id="ariaid-title27">Incompatible Changes Introduced in Impala 1.3.1</h2>
<div class="body conbody">
@@ -1093,9 +1109,9 @@
</div>
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title27" id="incompatible_changes__incompatible_changes_130">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title28" id="incompatible_changes__incompatible_changes_130">
- <h2 class="title topictitle2" id="ariaid-title27">Incompatible Changes Introduced in Impala 1.3.0</h2>
+ <h2 class="title topictitle2" id="ariaid-title28">Incompatible Changes Introduced in Impala 1.3.0</h2>
<div class="body conbody">
@@ -1180,9 +1196,9 @@
</div>
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title28" id="incompatible_changes__incompatible_changes_124">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title29" id="incompatible_changes__incompatible_changes_124">
- <h2 class="title topictitle2" id="ariaid-title28">Incompatible Changes Introduced in Impala 1.2.4</h2>
+ <h2 class="title topictitle2" id="ariaid-title29">Incompatible Changes Introduced in Impala 1.2.4</h2>
<div class="body conbody">
@@ -1202,9 +1218,9 @@
</div>
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title29" id="incompatible_changes__incompatible_changes_123">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title30" id="incompatible_changes__incompatible_changes_123">
- <h2 class="title topictitle2" id="ariaid-title29">Incompatible Changes Introduced in Impala 1.2.3</h2>
+ <h2 class="title topictitle2" id="ariaid-title30">Incompatible Changes Introduced in Impala 1.2.3</h2>
<div class="body conbody">
@@ -1216,9 +1232,9 @@
</div>
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title30" id="incompatible_changes__incompatible_changes_122">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title31" id="incompatible_changes__incompatible_changes_122">
- <h2 class="title topictitle2" id="ariaid-title30">Incompatible Changes Introduced in Impala 1.2.2</h2>
+ <h2 class="title topictitle2" id="ariaid-title31">Incompatible Changes Introduced in Impala 1.2.2</h2>
<div class="body conbody">
@@ -1284,9 +1300,9 @@ select * from `cross`;</code></pre>
</div>
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title31" id="incompatible_changes__incompatible_changes_121">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title32" id="incompatible_changes__incompatible_changes_121">
- <h2 class="title topictitle2" id="ariaid-title31">Incompatible Changes Introduced in Impala 1.2.1</h2>
+ <h2 class="title topictitle2" id="ariaid-title32">Incompatible Changes Introduced in Impala 1.2.1</h2>
<div class="body conbody">
@@ -1328,7 +1344,6 @@ select * from `cross`;</code></pre>
<span class="keyword cmdname">catalogd</span> daemon.
</p>
</li>
-
<li class="li">
<p class="p">
The <code class="ph codeph">REFRESH</code> and <code class="ph codeph">INVALIDATE METADATA</code> statements are no longer needed
@@ -1353,9 +1368,9 @@ select * from `cross`;</code></pre>
</div>
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title32" id="incompatible_changes__incompatible_changes_120">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title33" id="incompatible_changes__incompatible_changes_120">
- <h2 class="title topictitle2" id="ariaid-title32">Incompatible Changes Introduced in Impala 1.2.0 (Beta)</h2>
+ <h2 class="title topictitle2" id="ariaid-title33">Incompatible Changes Introduced in Impala 1.2.0 (Beta)</h2>
<div class="body conbody">
@@ -1378,7 +1393,6 @@ select * from `cross`;</code></pre>
<span class="keyword cmdname">catalogd</span> daemon.
</p>
</li>
-
<li class="li">
<p class="p">
The <code class="ph codeph">REFRESH</code> and <code class="ph codeph">INVALIDATE METADATA</code> statements are no longer needed
@@ -1409,9 +1423,9 @@ select * from `cross`;</code></pre>
</div>
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title33" id="incompatible_changes__incompatible_changes_111">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title34" id="incompatible_changes__incompatible_changes_111">
- <h2 class="title topictitle2" id="ariaid-title33">Incompatible Changes Introduced in Impala 1.1.1</h2>
+ <h2 class="title topictitle2" id="ariaid-title34">Incompatible Changes Introduced in Impala 1.1.1</h2>
<div class="body conbody">
@@ -1459,9 +1473,9 @@ ALTER TABLE <var class="keyword varname">table_name</var> SET FILEFORMAT
</div>
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title34" id="incompatible_changes__incompatible_changes_11">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title35" id="incompatible_changes__incompatible_changes_11">
- <h2 class="title topictitle2" id="ariaid-title34">Incompatible Change Introduced in Impala 1.1</h2>
+ <h2 class="title topictitle2" id="ariaid-title35">Incompatible Change Introduced in Impala 1.1</h2>
<div class="body conbody">
@@ -1486,9 +1500,9 @@ ALTER TABLE <var class="keyword varname">table_name</var> SET FILEFORMAT
</div>
</article>
- <article class="topic concept nested1" aria-labelledby="ariaid-title35" id="incompatible_changes__incompatible_changes_10">
+ <article class="topic concept nested1" aria-labelledby="ariaid-title36" id="incompatible_changes__incompatible_changes_10">
- <h2 class="title topictitle2" id="ariaid-title35">Incompatible Changes Introduced in Impala 1.0</h2>
+ <h2 class="title topictitle2" id="ariaid-title36">Incompatible Changes Introduced in Impala 1.0</h2>
<div class="body conbody">