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Posted to commits@drill.apache.org by ts...@apache.org on 2015/05/19 01:38:51 UTC
[16/51] [partial] drill-site git commit: Website update
http://git-wip-us.apache.org/repos/asf/drill-site/blob/ee640eab/docs/parquet-format/index.html
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diff --git a/docs/parquet-format/index.html b/docs/parquet-format/index.html
index 77588f5..49bd46c 100644
--- a/docs/parquet-format/index.html
+++ b/docs/parquet-format/index.html
@@ -9,26 +9,21 @@
<title>Parquet Format - Apache Drill</title>
-<link href="/css/syntax.css" rel="stylesheet" type="text/css">
-<link href="/css/style.css" rel="stylesheet" type="text/css">
-<link href="/css/arrows.css" rel="stylesheet" type="text/css">
-<link href="/css/breadcrumbs.css" rel="stylesheet" type="text/css">
-<link href="/css/code.css" rel="stylesheet" type="text/css">
-<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css">
-<link href="/css/responsive.css" rel="stylesheet" type="text/css">
-
-<link rel="shortcut icon" href="/favicon.ico" type="image/x-icon">
-<link rel="icon" href="/favicon.ico" type="image/x-icon">
-
-<script language="javascript" type="text/javascript" src="/js/lib/jquery-1.11.1.min.js"></script>
-<script language="javascript" type="text/javascript" src="/js/lib/jquery.easing.1.3.js"></script>
+<link href="//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css" rel="stylesheet" type="text/css"/>
+<link href="/css/site.css" rel="stylesheet" type="text/css"/>
+
+<link rel="shortcut icon" href="/favicon.ico" type="image/x-icon"/>
+<link rel="icon" href="/favicon.ico" type="image/x-icon"/>
+
+<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js" language="javascript" type="text/javascript"></script>
+<script src="//cdnjs.cloudflare.com/ajax/libs/jquery-easing/1.3/jquery.easing.min.js" language="javascript" type="text/javascript"></script>
<script language="javascript" type="text/javascript" src="/js/modernizr.custom.js"></script>
<script language="javascript" type="text/javascript" src="/js/script.js"></script>
<script language="javascript" type="text/javascript" src="/js/drill.js"></script>
-
</head>
+
<body onResize="resized();">
<div class="page-wrap">
<div class="bui"></div>
@@ -63,6 +58,12 @@
<li><a href="/docs/query-data/">Query Data</a></li>
+ <li><a href="/docs/performance-tuning/">Performance Tuning</a></li>
+
+ <li><a href="/docs/log-and-debug/">Log and Debug</a></li>
+
+ <li><a href="/docs/query-audit-logging/">Query Audit Logging</a></li>
+
<li><a href="/docs/sql-reference/">SQL Reference</a></li>
<li><a href="/docs/data-sources-and-file-formats/">Data Sources and File Formats</a></li>
@@ -81,6 +82,8 @@
<li><a href="/docs/project-bylaws/">Project Bylaws</a></li>
+ <li><a href="/docs/log-and-debug/">Log and Debug</a></li>
+
</ul>
</li>
<li class='nav'>
@@ -110,7 +113,9 @@
</ul>
</div>
-
+ <link href="/css/content.css" rel="stylesheet" type="text/css">
+
+
@@ -149,14 +154,7 @@
- <li class="toctree-l2"><a href="javascript: void(0);">Architectural Highlights</a></li>
- <ul style="display: none">
-
- <li class="toctree-l3"><a class="reference internal" href="/docs/flexibility/">Flexibility</a></li>
-
- <li class="toctree-l3"><a class="reference internal" href="/docs/performance/">Performance</a></li>
-
- </ul>
+ <li class="toctree-l2"><a class="reference internal" href="/docs/performance/">Performance</a></li>
</ul>
@@ -203,6 +201,10 @@
<li class="toctree-l2"><a class="reference internal" href="/docs/analyzing-highly-dynamic-datasets/">Analyzing Highly Dynamic Datasets</a></li>
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/analyzing-social-media/">Analyzing Social Media</a></li>
+
+
</ul>
@@ -300,7 +302,7 @@
- <li class="toctree-l2"><a class="reference internal" href="/docs/partition-pruning/">Partition Pruning</a></li>
+ <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-the-drill-shell/">Configuring the Drill Shell</a></li>
</ul>
@@ -357,7 +359,7 @@
- <li class="toctree-l2"><a class="reference internal" href="/docs/using-jdbc/">Using JDBC</a></li>
+ <li class="toctree-l2"><a class="reference internal" href="/docs/using-jdbc-with-squirrel-on-windows/">Using JDBC with SQuirreL on Windows</a></li>
@@ -409,6 +411,10 @@
+ <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-tibco-spotfire-server-with-drill/">Configuring Tibco Spotfire Server with Drill</a></li>
+
+
+
<li class="toctree-l2"><a class="reference internal" href="/docs/using-apache-drill-with-tableau-9-desktop/">Using Apache Drill with Tableau 9 Desktop</a></li>
@@ -487,6 +493,32 @@
+ <li class="toctree-l1"><a href="javascript: void(0);">Performance Tuning</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/performance-tuning-introduction/">Performance Tuning Introduction</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a class="reference internal" href="/docs/log-and-debug/">Log and Debug</a></li>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Query Audit Logging</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/getting-query-information/">Getting Query Information</a></li>
+
+
+ </ul>
+
+
+
<li class="toctree-l1"><a href="javascript: void(0);">SQL Reference</a></li>
<ul style="display: none">
@@ -563,27 +595,47 @@
<li class="toctree-l3"><a class="reference internal" href="/docs/supported-sql-commands/">Supported SQL Commands</a></li>
- <li class="toctree-l3"><a class="reference internal" href="/docs/alter-session-command/">ALTER SESSION Command</a></li>
+ <li class="toctree-l3"><a class="reference internal" href="/docs/alter-session/">ALTER SESSION</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/alter-system/">ALTER SYSTEM</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/create-table-as-ctas/">CREATE TABLE AS (CTAS)</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/create-view/">CREATE VIEW</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/drop-view/">DROP VIEW</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/describe/">DESCRIBE</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/explain/">EXPLAIN</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select/">SELECT</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select-from/">SELECT FROM</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select-group-by/">SELECT GROUP BY</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select-having/">SELECT HAVING</a></li>
- <li class="toctree-l3"><a class="reference internal" href="/docs/alter-system-command/">ALTER SYSTEM Command</a></li>
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select-limit/">SELECT LIMIT</a></li>
- <li class="toctree-l3"><a class="reference internal" href="/docs/create-table-as-ctas-command/">CREATE TABLE AS (CTAS) Command</a></li>
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select-offset/">SELECT OFFSET</a></li>
- <li class="toctree-l3"><a class="reference internal" href="/docs/create-view-command/">CREATE VIEW Command</a></li>
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select-order-by/">SELECT ORDER BY</a></li>
- <li class="toctree-l3"><a class="reference internal" href="/docs/describe-command/">DESCRIBE Command</a></li>
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select-union/">SELECT UNION</a></li>
- <li class="toctree-l3"><a class="reference internal" href="/docs/explain-commands/">EXPLAIN Commands</a></li>
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select-where/">SELECT WHERE</a></li>
- <li class="toctree-l3"><a class="reference internal" href="/docs/select-statements/">SELECT Statements</a></li>
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select-with/">SELECT WITH</a></li>
- <li class="toctree-l3"><a class="reference internal" href="/docs/show-databases-and-show-schemas-command/">SHOW DATABASES and SHOW SCHEMAS Command</a></li>
+ <li class="toctree-l3"><a class="reference internal" href="/docs/show-databases-and-show-schemas/">SHOW DATABASES and SHOW SCHEMAS</a></li>
- <li class="toctree-l3"><a class="reference internal" href="/docs/show-files-command/">SHOW FILES Command</a></li>
+ <li class="toctree-l3"><a class="reference internal" href="/docs/show-files/">SHOW FILES</a></li>
- <li class="toctree-l3"><a class="reference internal" href="/docs/show-tables-command/">SHOW TABLES Command</a></li>
+ <li class="toctree-l3"><a class="reference internal" href="/docs/show-tables/">SHOW TABLES</a></li>
- <li class="toctree-l3"><a class="reference internal" href="/docs/use-command/">USE Command</a></li>
+ <li class="toctree-l3"><a class="reference internal" href="/docs/use/">USE</a></li>
</ul>
@@ -782,6 +834,10 @@
<li class="toctree-l2"><a class="reference internal" href="/docs/what-is-apache-drill/">What is Apache Drill</a></li>
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/partition-pruning/">Partition Pruning</a></li>
+
+
</ul>
@@ -800,6 +856,29 @@
<li class="toctree-l1"><a class="reference internal" href="/docs/project-bylaws/">Project Bylaws</a></li>
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Log and Debug</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/log-and-debug-introduction/">Log and Debug Introduction</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/error-messages/">Error Messages</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/modify-logback-xml/">Modify logback.xml</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/review-the-java-stack-trace/">Review the Java Stack Trace</a></li>
+
+
+ </ul>
+
+
</ul>
</div>
@@ -807,7 +886,7 @@
</aside>
- <nav class="breadcrumbs">
+<nav class="breadcrumbs">
<li><a href="/docs/">Docs</a></li>
@@ -816,23 +895,23 @@
<li>Parquet Format</li>
</nav>
- <div class="main-content-wrapper">
- <div class="main-content">
+<div class="main-content-wrapper">
+ <div class="main-content">
-
- <a class="edit-link" href="https://github.com/apache/drill/blob/gh-pages/_docs/data-sources-and-file-formats/040-parquet-format.md" target="_blank"><i class="fa fa-pencil-square-o"></i></a>
-
+
+ <a class="edit-link" href="https://github.com/apache/drill/blob/gh-pages/_docs/data-sources-and-file-formats/040-parquet-format.md" target="_blank"><i class="fa fa-pencil-square-o"></i></a>
+
- <div class="int_title">
- <h1>Parquet Format</h1>
+ <div class="int_title left">
+ <h1>Parquet Format</h1>
- </div>
+ </div>
- <link href="/css/docpage.css" rel="stylesheet" type="text/css">
+ <link href="/css/docpage.css" rel="stylesheet" type="text/css">
- <div class="int_text" align="left">
-
- <p><a href="http://parquet.incubator.apache.org/documentation/latest">Apache Parquet</a> has the following characteristics:</p>
+ <div class="int_text" align="left">
+
+ <p><a href="http://parquet.incubator.apache.org/documentation/latest">Apache Parquet</a> has the following characteristics:</p>
<ul>
<li>Self-describing</li>
@@ -885,7 +964,7 @@
<h3 id="type-mapping">Type Mapping</h3>
-<p>The high correlation between Parquet and SQL data types makes reading Parquet files effortless in Drill. Writing to Parquet files takes more work than reading. Because SQL does not support all Parquet data types, to prevent Drill from inferring a type other than one you want, use the <a href="/docs/sql-functions">cast function</a> Drill offers more liberal casting capabilities than SQL for Parquet conversions if the Parquet data is of a logical type. </p>
+<p>The high correlation between Parquet and SQL data types makes reading Parquet files effortless in Drill. Writing to Parquet files takes more work than reading. Because SQL does not support all Parquet data types, to prevent Drill from inferring a type other than one you want, use the <a href="/docs/data-type-conversion/#cast">cast function</a> Drill offers more liberal casting capabilities than SQL for Parquet conversions if the Parquet data is of a logical type. </p>
<p>The following general process converts a file from JSON to Parquet:</p>
@@ -893,7 +972,7 @@
<li>Create or use an existing storage plugin that specifies the storage location of the Parquet file, mutability of the data, and supported file formats.</li>
<li>Take a look at the JSON data. </li>
<li>Create a table that selects the JSON file.</li>
-<li>In the CTAS command, cast JSON string data to corresponding <a href="/docs/json-data-model/data-type-mapping">SQL types</a>.</li>
+<li>In the CTAS command, cast JSON string data to corresponding <a href="/docs/json-data-model/#data-type-mapping">SQL types</a>.</li>
</ul>
<h3 id="example:-read-json,-write-parquet">Example: Read JSON, Write Parquet</h3>
@@ -1075,7 +1154,7 @@ FROM dfs.tmp.`sampleparquet` t;
<td>64 bits, unsigned</td>
</tr>
<tr>
-<td>DECIMAL</td>
+<td>DECIMAL*</td>
<td>38-digit precision</td>
<td>DECIMAL</td>
<td>Arbitrary-precision signed decimal numbers of the form unscaledValue * 10^(-scale)</td>
@@ -1100,6 +1179,8 @@ FROM dfs.tmp.`sampleparquet` t;
</tr>
</tbody></table>
+<p>* In this release, Drill disables the DECIMAL data type, including casting to DECIMAL and reading DECIMAL types from Parquet and Hive. To enable the DECIMAL type, set the <code>planner.enable_decimal_data_type</code> option to <code>true</code>.</p>
+
<h2 id="data-description-language-support">Data Description Language Support</h2>
<p>Parquet supports the following data description languages:</p>
@@ -1110,19 +1191,19 @@ FROM dfs.tmp.`sampleparquet` t;
<li>Google Protocol Buffers </li>
</ul>
-<p>Implement custom storage plugins, such as an Avro plugin, to create Parquet readers/writers for these formats. </p>
+<p>Implement custom storage plugins to create Parquet readers/writers for formats such as Thrift. </p>
+
-
- <div class="doc-nav">
+ <div class="doc-nav">
<span class="previous-toc"><a href="/docs/deploying-and-using-a-hive-udf/">← Deploying and Using a Hive UDF</a></span><span class="next-toc"><a href="/docs/json-data-model/">JSON Data Model →</a></span>
</div>
-
- </div>
+
</div>
</div>
+</div>
</div>
<p class="push"></p>
http://git-wip-us.apache.org/repos/asf/drill-site/blob/ee640eab/docs/partition-pruning/index.html
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diff --git a/docs/partition-pruning/index.html b/docs/partition-pruning/index.html
index 22d55e4..9d5072c 100644
--- a/docs/partition-pruning/index.html
+++ b/docs/partition-pruning/index.html
@@ -9,26 +9,21 @@
<title>Partition Pruning - Apache Drill</title>
-<link href="/css/syntax.css" rel="stylesheet" type="text/css">
-<link href="/css/style.css" rel="stylesheet" type="text/css">
-<link href="/css/arrows.css" rel="stylesheet" type="text/css">
-<link href="/css/breadcrumbs.css" rel="stylesheet" type="text/css">
-<link href="/css/code.css" rel="stylesheet" type="text/css">
-<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css">
-<link href="/css/responsive.css" rel="stylesheet" type="text/css">
-
-<link rel="shortcut icon" href="/favicon.ico" type="image/x-icon">
-<link rel="icon" href="/favicon.ico" type="image/x-icon">
-
-<script language="javascript" type="text/javascript" src="/js/lib/jquery-1.11.1.min.js"></script>
-<script language="javascript" type="text/javascript" src="/js/lib/jquery.easing.1.3.js"></script>
+<link href="//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css" rel="stylesheet" type="text/css"/>
+<link href="/css/site.css" rel="stylesheet" type="text/css"/>
+
+<link rel="shortcut icon" href="/favicon.ico" type="image/x-icon"/>
+<link rel="icon" href="/favicon.ico" type="image/x-icon"/>
+
+<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js" language="javascript" type="text/javascript"></script>
+<script src="//cdnjs.cloudflare.com/ajax/libs/jquery-easing/1.3/jquery.easing.min.js" language="javascript" type="text/javascript"></script>
<script language="javascript" type="text/javascript" src="/js/modernizr.custom.js"></script>
<script language="javascript" type="text/javascript" src="/js/script.js"></script>
<script language="javascript" type="text/javascript" src="/js/drill.js"></script>
-
</head>
+
<body onResize="resized();">
<div class="page-wrap">
<div class="bui"></div>
@@ -63,6 +58,12 @@
<li><a href="/docs/query-data/">Query Data</a></li>
+ <li><a href="/docs/performance-tuning/">Performance Tuning</a></li>
+
+ <li><a href="/docs/log-and-debug/">Log and Debug</a></li>
+
+ <li><a href="/docs/query-audit-logging/">Query Audit Logging</a></li>
+
<li><a href="/docs/sql-reference/">SQL Reference</a></li>
<li><a href="/docs/data-sources-and-file-formats/">Data Sources and File Formats</a></li>
@@ -81,6 +82,8 @@
<li><a href="/docs/project-bylaws/">Project Bylaws</a></li>
+ <li><a href="/docs/log-and-debug/">Log and Debug</a></li>
+
</ul>
</li>
<li class='nav'>
@@ -110,7 +113,9 @@
</ul>
</div>
-
+ <link href="/css/content.css" rel="stylesheet" type="text/css">
+
+
@@ -149,14 +154,7 @@
- <li class="toctree-l2"><a href="javascript: void(0);">Architectural Highlights</a></li>
- <ul style="display: none">
-
- <li class="toctree-l3"><a class="reference internal" href="/docs/flexibility/">Flexibility</a></li>
-
- <li class="toctree-l3"><a class="reference internal" href="/docs/performance/">Performance</a></li>
-
- </ul>
+ <li class="toctree-l2"><a class="reference internal" href="/docs/performance/">Performance</a></li>
</ul>
@@ -203,6 +201,10 @@
<li class="toctree-l2"><a class="reference internal" href="/docs/analyzing-highly-dynamic-datasets/">Analyzing Highly Dynamic Datasets</a></li>
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/analyzing-social-media/">Analyzing Social Media</a></li>
+
+
</ul>
@@ -248,8 +250,8 @@
- <li class="toctree-l1 current_section "><a href="javascript: void(0);">Configure Drill</a></li>
- <ul class="current_section">
+ <li class="toctree-l1"><a href="javascript: void(0);">Configure Drill</a></li>
+ <ul style="display: none">
<li class="toctree-l2"><a class="reference internal" href="/docs/configure-drill-introduction/">Configure Drill Introduction</a></li>
@@ -300,7 +302,7 @@
- <li class="toctree-l2 current"><a class="reference internal" href="/docs/partition-pruning/">Partition Pruning</a></li>
+ <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-the-drill-shell/">Configuring the Drill Shell</a></li>
</ul>
@@ -357,7 +359,7 @@
- <li class="toctree-l2"><a class="reference internal" href="/docs/using-jdbc/">Using JDBC</a></li>
+ <li class="toctree-l2"><a class="reference internal" href="/docs/using-jdbc-with-squirrel-on-windows/">Using JDBC with SQuirreL on Windows</a></li>
@@ -409,6 +411,10 @@
+ <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-tibco-spotfire-server-with-drill/">Configuring Tibco Spotfire Server with Drill</a></li>
+
+
+
<li class="toctree-l2"><a class="reference internal" href="/docs/using-apache-drill-with-tableau-9-desktop/">Using Apache Drill with Tableau 9 Desktop</a></li>
@@ -487,6 +493,32 @@
+ <li class="toctree-l1"><a href="javascript: void(0);">Performance Tuning</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/performance-tuning-introduction/">Performance Tuning Introduction</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a class="reference internal" href="/docs/log-and-debug/">Log and Debug</a></li>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Query Audit Logging</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/getting-query-information/">Getting Query Information</a></li>
+
+
+ </ul>
+
+
+
<li class="toctree-l1"><a href="javascript: void(0);">SQL Reference</a></li>
<ul style="display: none">
@@ -563,27 +595,47 @@
<li class="toctree-l3"><a class="reference internal" href="/docs/supported-sql-commands/">Supported SQL Commands</a></li>
- <li class="toctree-l3"><a class="reference internal" href="/docs/alter-session-command/">ALTER SESSION Command</a></li>
+ <li class="toctree-l3"><a class="reference internal" href="/docs/alter-session/">ALTER SESSION</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/alter-system/">ALTER SYSTEM</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/create-table-as-ctas/">CREATE TABLE AS (CTAS)</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/create-view/">CREATE VIEW</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/drop-view/">DROP VIEW</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/describe/">DESCRIBE</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/explain/">EXPLAIN</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select/">SELECT</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select-from/">SELECT FROM</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select-group-by/">SELECT GROUP BY</a></li>
- <li class="toctree-l3"><a class="reference internal" href="/docs/alter-system-command/">ALTER SYSTEM Command</a></li>
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select-having/">SELECT HAVING</a></li>
- <li class="toctree-l3"><a class="reference internal" href="/docs/create-table-as-ctas-command/">CREATE TABLE AS (CTAS) Command</a></li>
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select-limit/">SELECT LIMIT</a></li>
- <li class="toctree-l3"><a class="reference internal" href="/docs/create-view-command/">CREATE VIEW Command</a></li>
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select-offset/">SELECT OFFSET</a></li>
- <li class="toctree-l3"><a class="reference internal" href="/docs/describe-command/">DESCRIBE Command</a></li>
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select-order-by/">SELECT ORDER BY</a></li>
- <li class="toctree-l3"><a class="reference internal" href="/docs/explain-commands/">EXPLAIN Commands</a></li>
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select-union/">SELECT UNION</a></li>
- <li class="toctree-l3"><a class="reference internal" href="/docs/select-statements/">SELECT Statements</a></li>
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select-where/">SELECT WHERE</a></li>
- <li class="toctree-l3"><a class="reference internal" href="/docs/show-databases-and-show-schemas-command/">SHOW DATABASES and SHOW SCHEMAS Command</a></li>
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select-with/">SELECT WITH</a></li>
- <li class="toctree-l3"><a class="reference internal" href="/docs/show-files-command/">SHOW FILES Command</a></li>
+ <li class="toctree-l3"><a class="reference internal" href="/docs/show-databases-and-show-schemas/">SHOW DATABASES and SHOW SCHEMAS</a></li>
- <li class="toctree-l3"><a class="reference internal" href="/docs/show-tables-command/">SHOW TABLES Command</a></li>
+ <li class="toctree-l3"><a class="reference internal" href="/docs/show-files/">SHOW FILES</a></li>
- <li class="toctree-l3"><a class="reference internal" href="/docs/use-command/">USE Command</a></li>
+ <li class="toctree-l3"><a class="reference internal" href="/docs/show-tables/">SHOW TABLES</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/use/">USE</a></li>
</ul>
@@ -771,8 +823,8 @@
- <li class="toctree-l1"><a href="javascript: void(0);">Archived Pages</a></li>
- <ul style="display: none">
+ <li class="toctree-l1 current_section "><a href="javascript: void(0);">Archived Pages</a></li>
+ <ul class="current_section">
<li class="toctree-l2"><a class="reference internal" href="/docs/how-to-run-the-drill-demo/">How to Run the Drill Demo</a></li>
@@ -782,6 +834,10 @@
<li class="toctree-l2"><a class="reference internal" href="/docs/what-is-apache-drill/">What is Apache Drill</a></li>
+
+ <li class="toctree-l2 current"><a class="reference internal" href="/docs/partition-pruning/">Partition Pruning</a></li>
+
+
</ul>
@@ -800,6 +856,29 @@
<li class="toctree-l1"><a class="reference internal" href="/docs/project-bylaws/">Project Bylaws</a></li>
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Log and Debug</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/log-and-debug-introduction/">Log and Debug Introduction</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/error-messages/">Error Messages</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/modify-logback-xml/">Modify logback.xml</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/review-the-java-stack-trace/">Review the Java Stack Trace</a></li>
+
+
+ </ul>
+
+
</ul>
</div>
@@ -807,32 +886,32 @@
</aside>
- <nav class="breadcrumbs">
+<nav class="breadcrumbs">
<li><a href="/docs/">Docs</a></li>
- <li><a href="/docs/configure-drill/">Configure Drill</a></li>
+ <li><a href="/docs/archived-pages/">Archived Pages</a></li>
<li>Partition Pruning</li>
</nav>
- <div class="main-content-wrapper">
- <div class="main-content">
+<div class="main-content-wrapper">
+ <div class="main-content">
-
- <a class="edit-link" href="https://github.com/apache/drill/blob/gh-pages/_docs/configure-drill/110-partition-pruning.md" target="_blank"><i class="fa fa-pencil-square-o"></i></a>
-
+
+ <a class="edit-link" href="https://github.com/apache/drill/blob/gh-pages/_docs/archived-pages/030-partition-pruning.md" target="_blank"><i class="fa fa-pencil-square-o"></i></a>
+
- <div class="int_title">
- <h1>Partition Pruning</h1>
+ <div class="int_title left">
+ <h1>Partition Pruning</h1>
- </div>
+ </div>
- <link href="/css/docpage.css" rel="stylesheet" type="text/css">
+ <link href="/css/docpage.css" rel="stylesheet" type="text/css">
- <div class="int_text" align="left">
-
- <p>Partition pruning is a performance optimization that limits the number of
+ <div class="int_text" align="left">
+
+ <p>Partition pruning is a performance optimization that limits the number of
files and partitions that Drill reads when querying file systems and Hive
tables. Drill only reads a subset of the files that reside in a file system or
a subset of the partitions in a Hive table when a query matches certain filter
@@ -898,17 +977,17 @@ partition pruning optimization:</p>
<p><strong>Example 3: Combination of AND, OR involving partition filters</strong></p>
<div class="highlight"><pre><code class="language-text" data-lang="text">SELECT * FROM dfs.`/Users/max/data/logs` WHERE (dir0 = '2013' AND dir1 = '1') OR (dir0 = '2014' AND dir1 = '2')
</code></pre></div>
+
-
- <div class="doc-nav">
+ <div class="doc-nav">
- <span class="previous-toc"><a href="/docs/ports-used-by-drill/">← Ports Used by Drill</a></span><span class="next-toc"><a href="/docs/connect-a-data-source/">Connect a Data Source →</a></span>
+ <span class="previous-toc"><a href="/docs/what-is-apache-drill/">← What is Apache Drill</a></span><span class="next-toc"><a href="/docs/progress-reports/">Progress Reports →</a></span>
</div>
-
- </div>
+
</div>
</div>
+</div>
</div>
<p class="push"></p>
http://git-wip-us.apache.org/repos/asf/drill-site/blob/ee640eab/docs/performance-tuning-introduction/index.html
----------------------------------------------------------------------
diff --git a/docs/performance-tuning-introduction/index.html b/docs/performance-tuning-introduction/index.html
new file mode 100644
index 0000000..48f632e
--- /dev/null
+++ b/docs/performance-tuning-introduction/index.html
@@ -0,0 +1,962 @@
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+
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+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/lesson-1-learn-about-the-data-set/">Lesson 1: Learn about the Data Set</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/lesson-2-run-queries-with-ansi-sql/">Lesson 2: Run Queries with ANSI SQL</a></li>
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+ <li class="toctree-l3"><a class="reference internal" href="/docs/summary/">Summary</a></li>
+
+ </ul>
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+ <li class="toctree-l2"><a class="reference internal" href="/docs/analyzing-highly-dynamic-datasets/">Analyzing Highly Dynamic Datasets</a></li>
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+ <li class="toctree-l2"><a class="reference internal" href="/docs/analyzing-social-media/">Analyzing Social Media</a></li>
+
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+ </ul>
+
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+
+ <li class="toctree-l1"><a href="javascript: void(0);">Install Drill</a></li>
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+
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+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/starting-drill-on-windows/">Starting Drill on Windows</a></li>
+
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+
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+
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+
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+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/configure-drill-introduction/">Configure Drill Introduction</a></li>
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+
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+ <li class="toctree-l2"><a href="javascript: void(0);">Configuring a Multitenant Cluster</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-a-multitenant-cluster-introduction/">Configuring a Multitenant Cluster Introduction</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-multitenant-resources/">Configuring Multitenant Resources</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-resources-for-a-shared-drillbit/">Configuring Resources for a Shared Drillbit</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-user-impersonation/">Configuring User Impersonation</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-user-authentication/">Configuring User Authentication</a></li>
+
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+
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+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/start-up-options/">Start-Up Options</a></li>
+
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+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/persistent-configuration-storage/">Persistent Configuration Storage</a></li>
+
+ </ul>
+
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+
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+
+
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+
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+
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+
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+
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+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/drill-default-input-format/">Drill Default Input Format</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/mongodb-plugin-for-apache-drill/">MongoDB Plugin for Apache Drill</a></li>
+
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+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/mapr-db-format/">MapR-DB Format</a></li>
+
+
+ </ul>
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+ <ul style="display: none">
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+ <li class="toctree-l2"><a class="reference internal" href="/docs/interfaces-introduction/">Interfaces Introduction</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/using-jdbc-with-squirrel-on-windows/">Using JDBC with SQuirreL on Windows</a></li>
+
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+ <li class="toctree-l2"><a href="javascript: void(0);">Using ODBC on Linux and Mac OS X</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/odbc-on-linux-and-mac-introduction/">ODBC on Linux and Mac Introduction</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/installing-the-driver-on-linux/">Installing the Driver on Linux</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/installing-the-driver-on-mac-os-x/">Installing the Driver on Mac OS X</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-connections-on-linux-and-mac-os-x/">Configuring Connections on Linux and Mac OS X</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/driver-configuration-options/">Driver Configuration Options</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/using-a-connection-string/">Using a Connection String</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/advanced-properties/">Advanced Properties</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/testing-the-odbc-connection/">Testing the ODBC Connection</a></li>
+
+ </ul>
+
+
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+ <li class="toctree-l2"><a href="javascript: void(0);">Using ODBC on Windows</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/installing-the-driver-on-windows/">Installing the Driver on Windows</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-connections-on-windows/">Configuring Connections on Windows</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/connecting-to-odbc-data-sources/">Connecting to ODBC Data Sources</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/tableau-examples/">Tableau Examples</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/using-drill-explorer-on-windows/">Using Drill Explorer on Windows</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/using-microstrategy-analytics-with-apache-drill/">Using MicroStrategy Analytics with Apache Drill</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/using-tibco-spotfire-with-drill/">Using Tibco Spotfire with Drill</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-tibco-spotfire-server-with-drill/">Configuring Tibco Spotfire Server with Drill</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/using-apache-drill-with-tableau-9-desktop/">Using Apache Drill with Tableau 9 Desktop</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/using-apache-drill-with-tableau-9-server/">Using Apache Drill with Tableau 9 Server</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Query Data</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/query-data-introduction/">Query Data Introduction</a></li>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Querying a File System</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/querying-a-file-system-introduction/">Querying a File System Introduction</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/querying-json-files/">Querying JSON Files</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/querying-parquet-files/">Querying Parquet Files</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/querying-plain-text-files/">Querying Plain Text Files</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/querying-directories/">Querying Directories</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/querying-hbase/">Querying HBase</a></li>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Querying Complex Data</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/querying-complex-data-introduction/">Querying Complex Data Introduction</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/sample-data-donuts/">Sample Data: Donuts</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/selecting-flat-data/">Selecting Flat Data</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/using-sql-functions-clauses-and-joins/">Using SQL Functions, Clauses, and Joins</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/selecting-nested-data-for-a-column/">Selecting Nested Data for a Column</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/selecting-multiple-columns-within-nested-data/">Selecting Multiple Columns Within Nested Data</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/querying-hive/">Querying Hive</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/querying-the-information-schema/">Querying the INFORMATION SCHEMA</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/querying-system-tables/">Querying System Tables</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/monitoring-and-canceling-queries-in-the-drill-web-ui/">Monitoring and Canceling Queries in the Drill Web UI</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1 current_section "><a href="javascript: void(0);">Performance Tuning</a></li>
+ <ul class="current_section">
+
+
+ <li class="toctree-l2 current"><a class="reference internal" href="/docs/performance-tuning-introduction/">Performance Tuning Introduction</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a class="reference internal" href="/docs/log-and-debug/">Log and Debug</a></li>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Query Audit Logging</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/getting-query-information/">Getting Query Information</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">SQL Reference</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/sql-reference-introduction/">SQL Reference Introduction</a></li>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Data Types</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/supported-data-types/">Supported Data Types</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/date-time-and-timestamp/">Date, Time, and Timestamp</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/handling-different-data-types/">Handling Different Data Types</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/lexical-structure/">Lexical Structure</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/operators/">Operators</a></li>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">SQL Functions</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/about-sql-function-examples/">About SQL Function Examples</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/math-and-trig/">Math and Trig</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/data-type-conversion/">Data Type Conversion</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/date-time-functions-and-arithmetic/">Date/Time Functions and Arithmetic</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/string-manipulation/">String Manipulation</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/aggregate-and-aggregate-statistical/">Aggregate and Aggregate Statistical</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/functions-for-handling-nulls/">Functions for Handling Nulls</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Nested Data Functions</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/nested-data-limitations/">Nested Data Limitations</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/flatten/">FLATTEN</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/kvgen/">KVGEN</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/repeated-count/">REPEATED_COUNT</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/repeated-contains/">REPEATED_CONTAINS</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/query-directory-functions/">Query Directory Functions</a></li>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">SQL Commands</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/supported-sql-commands/">Supported SQL Commands</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/alter-session/">ALTER SESSION</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/alter-system/">ALTER SYSTEM</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/create-table-as-ctas/">CREATE TABLE AS (CTAS)</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/create-view/">CREATE VIEW</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/drop-view/">DROP VIEW</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/describe/">DESCRIBE</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/explain/">EXPLAIN</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select/">SELECT</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select-from/">SELECT FROM</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select-group-by/">SELECT GROUP BY</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select-having/">SELECT HAVING</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select-limit/">SELECT LIMIT</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select-offset/">SELECT OFFSET</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select-order-by/">SELECT ORDER BY</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select-union/">SELECT UNION</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select-where/">SELECT WHERE</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select-with/">SELECT WITH</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/show-databases-and-show-schemas/">SHOW DATABASES and SHOW SCHEMAS</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/show-files/">SHOW FILES</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/show-tables/">SHOW TABLES</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/use/">USE</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">SQL Conditional Expressions</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/case/">CASE</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/reserved-keywords/">Reserved Keywords</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/sql-extensions/">SQL Extensions</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Data Sources and File Formats</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/data-sources-and-file-formats-introduction/">Data Sources and File Formats Introduction</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/hive-to-drill-data-type-mapping/">Hive-to-Drill Data Type Mapping</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/deploying-and-using-a-hive-udf/">Deploying and Using a Hive UDF</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/parquet-format/">Parquet Format</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/json-data-model/">JSON Data Model</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Develop Custom Functions</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/develop-custom-functions-introduction/">Develop Custom Functions Introduction</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/develop-a-simple-function/">Develop a Simple Function</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/developing-an-aggregate-function/">Developing an Aggregate Function</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/adding-custom-functions-to-drill/">Adding Custom Functions to Drill</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/using-custom-functions-in-queries/">Using Custom Functions in Queries</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/custom-function-interfaces/">Custom Function Interfaces</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Developer Information</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Develop Drill</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/compiling-drill-from-source/">Compiling Drill from Source</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/drill-patch-review-tool/">Drill Patch Review Tool</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Contribute to Drill</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/apache-drill-contribution-guidelines/">Apache Drill Contribution Guidelines</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/apache-drill-contribution-ideas/">Apache Drill Contribution Ideas</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Design Docs</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/drill-plan-syntax/">Drill Plan Syntax</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/rpc-overview/">RPC Overview</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/query-stages/">Query Stages</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/useful-research/">Useful Research</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/value-vectors/">Value Vectors</a></li>
+
+ </ul>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Release Notes</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-0-5-0-release-notes/">Apache Drill 0.5.0 Release Notes</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-0-4-0-release-notes/">Apache Drill 0.4.0 Release Notes</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-m1-release-notes-apache-drill-alpha/">Apache Drill M1 Release Notes (Apache Drill Alpha)</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-m1-release-notes-apache-drill-alpha/">Apache Drill M1 Release Notes (Apache Drill Alpha)</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-0-6-0-release-notes/">Apache Drill 0.6.0 Release Notes</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-0-7-0-release-notes/">Apache Drill 0.7.0 Release Notes</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-0-8-0-release-notes/">Apache Drill 0.8.0 Release Notes</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-0-9-0-release-notes/">Apache Drill 0.9.0 Release Notes</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Sample Datasets</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/aol-search/">AOL Search</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/enron-emails/">Enron Emails</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/wikipedia-edit-history/">Wikipedia Edit History</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Archived Pages</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/how-to-run-the-drill-demo/">How to Run the Drill Demo</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/what-is-apache-drill/">What is Apache Drill</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/partition-pruning/">Partition Pruning</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Progress Reports</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/2014-q1-drill-report/">2014 Q1 Drill Report</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a class="reference internal" href="/docs/project-bylaws/">Project Bylaws</a></li>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Log and Debug</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/log-and-debug-introduction/">Log and Debug Introduction</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/error-messages/">Error Messages</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/modify-logback-xml/">Modify logback.xml</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/review-the-java-stack-trace/">Review the Java Stack Trace</a></li>
+
+
+ </ul>
+
+
+ </ul>
+
+ </div>
+ </div>
+</aside>
+
+
+<nav class="breadcrumbs">
+ <li><a href="/docs/">Docs</a></li>
+
+
+ <li><a href="/docs/performance-tuning/">Performance Tuning</a></li>
+
+ <li>Performance Tuning Introduction</li>
+</nav>
+
+<div class="main-content-wrapper">
+ <div class="main-content">
+
+
+ <a class="edit-link" href="https://github.com/apache/drill/blob/gh-pages/_docs/performance-tuning/010-performance-tuning-introduction.md" target="_blank"><i class="fa fa-pencil-square-o"></i></a>
+
+
+ <div class="int_title left">
+ <h1>Performance Tuning Introduction</h1>
+
+ </div>
+
+ <link href="/css/docpage.css" rel="stylesheet" type="text/css">
+
+ <div class="int_text" align="left">
+
+ <p>You can apply performance tuning measures to improve how efficiently Drill queries data. To significantly improve performance in Drill, you must have knowledge about the underlying data and data sources, as well as familiarity with how Drill executes queries.</p>
+
+<p>You can analyze query plans and profiles to identify the source of performance issues in Drill. Once you have isolated the source of an issue, you can apply the following tuning techniques to improve query performance:</p>
+
+<ul>
+<li>Modify query planning options</li>
+<li>Modify broadcast join options</li>
+<li>Switch between 1 or 2 phase aggregation</li>
+<li>Enable/disable hash-based memory-constrained operators</li>
+<li>Enable query queuing</li>
+<li>Control parallelization</li>
+<li>Organize data for partition pruning</li>
+<li>Change storage formats</li>
+<li>Disable Logging (See Logging and Debugging)</li>
+</ul>
+
+
+
+ <div class="doc-nav">
+
+ <span class="previous-toc"><a href="/docs/performance-tuning/">← Performance Tuning</a></span><span class="next-toc"><a href="/docs/log-and-debug/">Log and Debug →</a></span>
+</div>
+
+
+ </div>
+ </div>
+</div>
+
+ </div>
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+<div class="wrapper">
+Copyright © 2012-2014 The Apache Software Foundation, licensed under the Apache License, Version 2.0.<br>
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