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Posted to commits@tajo.apache.org by ji...@apache.org on 2016/02/04 01:29:12 UTC
svn commit: r1728394 [12/42] - in /tajo/site/docs: 0.11.1/ 0.11.1/_sources/
0.11.1/_sources/backup_and_restore/ 0.11.1/_sources/configuration/
0.11.1/_sources/functions/ 0.11.1/_sources/index/
0.11.1/_sources/partitioning/ 0.11.1/_sources/sql_language/...
Added: tajo/site/docs/0.11.1/configuration/catalog-site-xml.html
URL: http://svn.apache.org/viewvc/tajo/site/docs/0.11.1/configuration/catalog-site-xml.html?rev=1728394&view=auto
==============================================================================
--- tajo/site/docs/0.11.1/configuration/catalog-site-xml.html (added)
+++ tajo/site/docs/0.11.1/configuration/catalog-site-xml.html Thu Feb 4 00:29:05 2016
@@ -0,0 +1,281 @@
+
+
+<!DOCTYPE html>
+<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]-->
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+ <meta charset="utf-8">
+ <meta name="viewport" content="width=device-width, initial-scale=1.0">
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+ <title>The catalog-site.xml File — Apache Tajo 0.11.0 documentation</title>
+
+
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+ <link href='https://fonts.googleapis.com/css?family=Lato:400,700|Roboto+Slab:400,700|Inconsolata:400,700' rel='stylesheet' type='text/css'>
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+ <link rel="stylesheet" href="../_static/css/theme.css" type="text/css" />
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+ <link rel="top" title="Apache Tajo 0.11.0 documentation" href="../index.html"/>
+ <link rel="up" title="Configuration" href="../configuration.html"/>
+ <link rel="next" title="The storage-site.json File" href="storage-site-json.html"/>
+ <link rel="prev" title="The tajo-site.xml File" href="tajo-site-xml.html"/>
+
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+ <script src="https://cdnjs.cloudflare.com/ajax/libs/modernizr/2.6.2/modernizr.min.js"></script>
+
+</head>
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+<body class="wy-body-for-nav" role="document">
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+ <input type="text" name="q" placeholder="Search docs" />
+ <input type="hidden" name="check_keywords" value="yes" />
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+<li class="toctree-l1"><a class="reference internal" href="../introduction.html">Introduction</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../getting_started.html">Getting Started</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../getting_started.html#prerequisites">Prerequisites</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../getting_started.html#dowload-and-unpack-the-source-code">Dowload and unpack the source code</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../getting_started.html#build-source-code">Build source code</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../getting_started.html#setting-up-a-local-tajo-cluster">Setting up a local Tajo cluster</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../getting_started.html#first-query-execution">First query execution</a></li>
+</ul>
+</li>
+<li class="toctree-l1 current"><a class="reference internal" href="../configuration.html">Configuration</a><ul class="current">
+<li class="toctree-l2"><a class="reference internal" href="preliminary.html">Preliminary</a></li>
+<li class="toctree-l2"><a class="reference internal" href="cluster_setup.html">Cluster Setup</a></li>
+<li class="toctree-l2"><a class="reference internal" href="tajo_master_configuration.html">Tajo Master Configuration</a></li>
+<li class="toctree-l2"><a class="reference internal" href="worker_configuration.html">Worker Configuration</a></li>
+<li class="toctree-l2"><a class="reference internal" href="catalog_configuration.html">Catalog Configuration</a></li>
+<li class="toctree-l2"><a class="reference internal" href="ha_configuration.html">High Availability for TajoMaster</a></li>
+<li class="toctree-l2"><a class="reference internal" href="service_config_defaults.html">Cluster Service Configuration Defaults</a></li>
+<li class="toctree-l2"><a class="reference internal" href="tajo-site-xml.html">The tajo-site.xml File</a></li>
+<li class="toctree-l2 current"><a class="current reference internal" href="">The catalog-site.xml File</a></li>
+<li class="toctree-l2"><a class="reference internal" href="storage-site-json.html">The storage-site.json File</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../tsql.html">Tajo Shell (TSQL)</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../tsql/meta_command.html">Meta Commands</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../tsql/dfs_command.html">Executing HDFS commands</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../tsql/variables.html">Session Variables</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../tsql/admin_command.html">Administration Commands</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../tsql/intro.html">Introducing to TSQL</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../tsql/single_command.html">Executing a single command</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../tsql/execute_file.html">Executing Queries from Files</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../tsql/background_command.html">Executing as background process</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../sql_language.html">SQL Language</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/data_model.html">Data Model</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/ddl.html">Data Definition Language</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/insert.html">INSERT (OVERWRITE) INTO</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/alter_table.html">ALTER TABLE</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/queries.html">Queries</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/joins.html">Joins</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/sql_expression.html">SQL Expressions</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/predicates.html">Predicates</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/explain.html">EXPLAIN</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../time_zone.html">Time Zone</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../time_zone.html#server-cluster-time-zone">Server Cluster Time Zone</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../time_zone.html#table-time-zone">Table Time Zone</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../time_zone.html#client-time-zone">Client Time Zone</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../time_zone.html#time-zone-id">Time Zone ID</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../time_zone.html#examples-of-time-zone">Examples of Time Zone</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../functions.html">Functions</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../functions.html#built-in-scalar-functions">Built-in Scalar Functions</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../functions.html#built-in-aggregation-functions">Built-in Aggregation Functions</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../functions.html#built-in-window-functions">Built-in Window Functions</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../functions.html#user-defined-functions">User-defined Functions</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../table_management.html">Table Management</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../table_management/table_overview.html">Overview of Tajo Tables</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../table_management/tablespaces.html">Tablespaces</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../table_management/data_formats.html">Data Formats</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../table_management/compression.html">Compression</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../table_partitioning.html">Table Partitioning</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../partitioning/intro_to_partitioning.html">Introduction to Partitioning</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../partitioning/column_partitioning.html">Column Partitioning</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../partitioning/range_partitioning.html">Range Partitioning</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../partitioning/hash_partitioning.html">Hash Partitioning</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../storage_plugins.html">Storage Plugin</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../storage_plugins/overview.html">Storage Plugin Overview</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../storage_plugins/postgresql.html">PostgreSQL Storage Handler</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../index_overview.html">Index (Experimental Feature)</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../index/types.html">Index Types</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../index/how_to_use.html">How to use index?</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../index/future_work.html">Future Works</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../backup_and_restore.html">Backup and Restore</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../backup_and_restore/catalog.html">Backup and Restore Catalog</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../hive_integration.html">Hive Integration</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../hbase_integration.html">HBase Integration</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../hbase_integration.html#create-table">CREATE TABLE</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../hbase_integration.html#drop-table">DROP TABLE</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../hbase_integration.html#insert-overwrite-into">INSERT (OVERWRITE) INTO</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../hbase_integration.html#usage">Usage</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../swift_integration.html">OpenStack Swift Integration</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../swift_integration.html#swift-configuration">Swift configuration</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../swift_integration.html#hadoop-configurations">Hadoop configurations</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../swift_integration.html#tajo-configuration">Tajo configuration</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../swift_integration.html#querying-on-swift">Querying on Swift</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../jdbc_driver.html">Tajo JDBC Driver</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../jdbc_driver.html#how-to-get-jdbc-driver">How to get JDBC driver</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../jdbc_driver.html#setting-the-classpath">Setting the CLASSPATH</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../jdbc_driver.html#connecting-to-the-tajo-cluster-instance">Connecting to the Tajo cluster instance</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../jdbc_driver.html#connection-parameters">Connection Parameters</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../jdbc_driver.html#an-example-jdbc-client">An Example JDBC Client</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../tajo_client_api.html">Tajo Client API</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../faq.html">FAQ</a></li>
+</ul>
+
+
+ </div>
+
+ </nav>
+
+ <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap">
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+ <nav class="wy-nav-top" role="navigation" aria-label="top navigation">
+ <i data-toggle="wy-nav-top" class="fa fa-bars"></i>
+ <a href="../index.html">Apache Tajo</a>
+ </nav>
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+ <div role="navigation" aria-label="breadcrumbs navigation">
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+<h1>The catalog-site.xml File<a class="headerlink" href="#the-catalog-site-xml-file" title="Permalink to this headline">¶</a></h1>
+</div>
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+ };
+ </script>
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+ jQuery(function () {
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+ });
+ </script>
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+</html>
\ No newline at end of file
Added: tajo/site/docs/0.11.1/configuration/catalog_configuration.html
URL: http://svn.apache.org/viewvc/tajo/site/docs/0.11.1/configuration/catalog_configuration.html?rev=1728394&view=auto
==============================================================================
--- tajo/site/docs/0.11.1/configuration/catalog_configuration.html (added)
+++ tajo/site/docs/0.11.1/configuration/catalog_configuration.html Thu Feb 4 00:29:05 2016
@@ -0,0 +1,450 @@
+
+
+<!DOCTYPE html>
+<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]-->
+<!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]-->
+<head>
+ <meta charset="utf-8">
+ <meta name="viewport" content="width=device-width, initial-scale=1.0">
+
+ <title>Catalog Configuration — Apache Tajo 0.11.0 documentation</title>
+
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+ <link href='https://fonts.googleapis.com/css?family=Lato:400,700|Roboto+Slab:400,700|Inconsolata:400,700' rel='stylesheet' type='text/css'>
+
+
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+
+
+ <link rel="stylesheet" href="../_static/css/theme.css" type="text/css" />
+
+
+
+ <link rel="top" title="Apache Tajo 0.11.0 documentation" href="../index.html"/>
+ <link rel="up" title="Configuration" href="../configuration.html"/>
+ <link rel="next" title="High Availability for TajoMaster" href="ha_configuration.html"/>
+ <link rel="prev" title="Worker Configuration" href="worker_configuration.html"/>
+
+
+ <script src="https://cdnjs.cloudflare.com/ajax/libs/modernizr/2.6.2/modernizr.min.js"></script>
+
+</head>
+
+<body class="wy-body-for-nav" role="document">
+
+ <div class="wy-grid-for-nav">
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+ <nav data-toggle="wy-nav-shift" class="wy-nav-side">
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+ <form id ="rtd-search-form" class="wy-form" action="../search.html" method="get">
+ <input type="text" name="q" placeholder="Search docs" />
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+ <ul class="current">
+<li class="toctree-l1"><a class="reference internal" href="../introduction.html">Introduction</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../getting_started.html">Getting Started</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../getting_started.html#prerequisites">Prerequisites</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../getting_started.html#dowload-and-unpack-the-source-code">Dowload and unpack the source code</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../getting_started.html#build-source-code">Build source code</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../getting_started.html#setting-up-a-local-tajo-cluster">Setting up a local Tajo cluster</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../getting_started.html#first-query-execution">First query execution</a></li>
+</ul>
+</li>
+<li class="toctree-l1 current"><a class="reference internal" href="../configuration.html">Configuration</a><ul class="current">
+<li class="toctree-l2"><a class="reference internal" href="preliminary.html">Preliminary</a></li>
+<li class="toctree-l2"><a class="reference internal" href="cluster_setup.html">Cluster Setup</a></li>
+<li class="toctree-l2"><a class="reference internal" href="tajo_master_configuration.html">Tajo Master Configuration</a></li>
+<li class="toctree-l2"><a class="reference internal" href="worker_configuration.html">Worker Configuration</a></li>
+<li class="toctree-l2 current"><a class="current reference internal" href="">Catalog Configuration</a></li>
+<li class="toctree-l2"><a class="reference internal" href="ha_configuration.html">High Availability for TajoMaster</a></li>
+<li class="toctree-l2"><a class="reference internal" href="service_config_defaults.html">Cluster Service Configuration Defaults</a></li>
+<li class="toctree-l2"><a class="reference internal" href="tajo-site-xml.html">The tajo-site.xml File</a></li>
+<li class="toctree-l2"><a class="reference internal" href="catalog-site-xml.html">The catalog-site.xml File</a></li>
+<li class="toctree-l2"><a class="reference internal" href="storage-site-json.html">The storage-site.json File</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../tsql.html">Tajo Shell (TSQL)</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../tsql/meta_command.html">Meta Commands</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../tsql/dfs_command.html">Executing HDFS commands</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../tsql/variables.html">Session Variables</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../tsql/admin_command.html">Administration Commands</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../tsql/intro.html">Introducing to TSQL</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../tsql/single_command.html">Executing a single command</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../tsql/execute_file.html">Executing Queries from Files</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../tsql/background_command.html">Executing as background process</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../sql_language.html">SQL Language</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/data_model.html">Data Model</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/ddl.html">Data Definition Language</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/insert.html">INSERT (OVERWRITE) INTO</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/alter_table.html">ALTER TABLE</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/queries.html">Queries</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/joins.html">Joins</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/sql_expression.html">SQL Expressions</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/predicates.html">Predicates</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/explain.html">EXPLAIN</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../time_zone.html">Time Zone</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../time_zone.html#server-cluster-time-zone">Server Cluster Time Zone</a></li>
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+
+ <div class="section" id="catalog-configuration">
+<h1>Catalog Configuration<a class="headerlink" href="#catalog-configuration" title="Permalink to this headline">¶</a></h1>
+<p>If you want to customize the catalog service, copy <code class="docutils literal"><span class="pre">$TAJO_HOME/conf/catalog-site.xml.template</span></code> to <code class="docutils literal"><span class="pre">catalog-site.xml</span></code>. Then, add the following configs to catalog-site.xml. Note that the default configs are enough to launch Tajo cluster in most cases.</p>
+<ul class="simple">
+<li>tajo.catalog.master.addr - If you want to launch a Tajo cluster in distributed mode, you must specify this address. For more detail information, see [Default Ports](#DefaultPorts).</li>
+<li>tajo.catalog.store.class - If you want to change the persistent storage of the catalog server, specify the class name. Its default value is tajo.catalog.store.DerbyStore. In the current version, Tajo provides three persistent storage classes as follows:</li>
+</ul>
+<table border="1" class="docutils">
+<colgroup>
+<col width="44%" />
+<col width="56%" />
+</colgroup>
+<thead valign="bottom">
+<tr class="row-odd"><th class="head">Driver Class</th>
+<th class="head">Descriptions</th>
+</tr>
+</thead>
+<tbody valign="top">
+<tr class="row-even"><td>tajo.catalog.store.DerbyStore</td>
+<td>this storage class uses Apache Derby.</td>
+</tr>
+<tr class="row-odd"><td>tajo.catalog.store.MySQLStore</td>
+<td>this storage class uses MySQL.</td>
+</tr>
+<tr class="row-even"><td>tajo.catalog.store.MariaDBStore</td>
+<td>this storage class uses MariaDB.</td>
+</tr>
+<tr class="row-odd"><td>tajo.catalog.store.MemStore</td>
+<td>this is the in-memory storage. It is only used
+in unit tests to shorten the duration of unit
+tests.</td>
+</tr>
+<tr class="row-even"><td>tajo.catalog.store.HiveCatalogStore</td>
+<td>this storage class uses HiveMetaStore.</td>
+</tr>
+</tbody>
+</table>
+<div class="section" id="derby-configuration">
+<h2>Derby Configuration<a class="headerlink" href="#derby-configuration" title="Permalink to this headline">¶</a></h2>
+<p>By default, Tajo uses <a class="reference external" href="http://db.apache.org/derby/">Apache Derby</a> as a persistent storage in order to manage table meta data. So, without any configuration, you can use Derby for catalog store.</p>
+<p>Also, you can set manually configs in <code class="docutils literal"><span class="pre">conf/catalog-site.xml</span></code> as follows:</p>
+<div class="highlight-xml"><div class="highlight"><pre><property>
+ <name>tajo.catalog.store.class</name>
+ <value>org.apache.tajo.catalog.store.DerbyStore</value>
+</property>
+
+<property>
+ <name>tajo.catalog.uri</name>
+ <value>jdbc:derby:<absolute directory>;create=true</value>
+</property>
+</pre></div>
+</div>
+<p>Since Derby is a file-based embedded database, it stores data into a specified directory. So, you need to specify the directory for storing data files instead of specifying JDBC URI with hostname and port. For example, in case where you use ‘/var/data/tajo-catalog’ as a derby store directory, you should set configs as follows:</p>
+<div class="highlight-xml"><div class="highlight"><pre><span class="nt"><property></span>
+ <span class="nt"><name></span>tajo.catalog.uri<span class="nt"></name></span>
+ <span class="nt"><value></span>jdbc:derby:/var/data/tajo-catalog;create=true<span class="nt"></value></span>
+<span class="nt"></property></span>
+</pre></div>
+</div>
+<div class="admonition warning">
+<p class="first admonition-title">Warning</p>
+<p class="last">By default, <em>Catalog server</em> stores catalog data into <code class="docutils literal"><span class="pre">/tmp/tajo-catalog-${username}</span></code> directory. But, some operating systems may remove all contents in <code class="docutils literal"><span class="pre">/tmp</span></code> when booting up. In order to ensure persistent store of your catalog data, you need to set a proper location of derby directory.</p>
+</div>
+</div>
+<div class="section" id="mysql-mariadb-postgresql-oracle-configuration">
+<h2>MySQL/MariaDB/PostgreSQL/Oracle Configuration<a class="headerlink" href="#mysql-mariadb-postgresql-oracle-configuration" title="Permalink to this headline">¶</a></h2>
+<p>Tajo supports several database systems, including MySQL, MariaDB, PostgreSQL, and Oracle, as its catalog store.
+In order to use these systems, you first need to create a database and a user for Tajo.
+The following example shows the creation of a user and a database with MySQL.</p>
+<div class="highlight-sh"><div class="highlight"><pre>mysql> create user <span class="s1">'tajo'</span>@<span class="s1">'localhost'</span> identified by <span class="s1">'xxxxxx'</span><span class="p">;</span>
+Query OK, <span class="m">0</span> rows affected <span class="o">(</span>0.00 sec<span class="o">)</span>
+
+mysql> create database tajo<span class="p">;</span>
+Query OK, <span class="m">1</span> row affected <span class="o">(</span>0.00 sec<span class="o">)</span>
+
+mysql> grant all on tajo.* to <span class="s1">'tajo'</span>@<span class="s1">'localhost'</span><span class="p">;</span>
+Query OK, <span class="m">0</span> rows affected <span class="o">(</span>0.01 sec<span class="o">)</span>
+</pre></div>
+</div>
+<p>Second, you must install the proper JDBC driver on the TajoMaster node. And then, you need to set the <code class="docutils literal"><span class="pre">TAJO_CLASSPATH</span></code> variable in <code class="docutils literal"><span class="pre">conf/tajo-env.sh</span></code> as follows:</p>
+<div class="highlight-sh"><div class="highlight"><pre><span class="o">(</span>MySQL<span class="o">)</span>
+$ <span class="nb">export</span> <span class="nv">TAJO_CLASSPATH</span><span class="o">=</span>/usr/local/mysql/lib/mysql-connector-java-x.x.x.jar
+
+<span class="o">(</span>MariaDB<span class="o">)</span>
+$ <span class="nb">export</span> <span class="nv">TAJO_CLASSPATH</span><span class="o">=</span>/usr/local/mariadb/lib/mariadb-java-client-x.x.x.jar
+
+<span class="o">(</span>PostgreSQL<span class="o">)</span>
+$ <span class="nb">export</span> <span class="nv">TAJO_CLASSPATH</span><span class="o">=</span>/usr/share/java/postgresql-jdbc4.jar
+
+<span class="o">(</span>Oracle<span class="o">)</span>
+$ <span class="nb">export</span> <span class="nv">TAJO_CLASSPATH</span><span class="o">=</span>/path/to/oracle/driver/ojdbc7.jar
+</pre></div>
+</div>
+<p>Alternatively, you can copy the jdbc driver into <code class="docutils literal"><span class="pre">$TAJO_HOME/lib</span></code>.</p>
+<p>Finally, you must add the following configurations to <cite>conf/catalog-site.xml</cite> :</p>
+<div class="highlight-xml"><div class="highlight"><pre><property>
+ <name>tajo.catalog.connection.id</name>
+ <value><user name></value>
+</property>
+<property>
+ <name>tajo.catalog.connection.password</name>
+ <value><user password></value>
+</property>
+
+<!-- MySQL -->
+<property>
+ <name>tajo.catalog.store.class</name>
+ <value>org.apache.tajo.catalog.store.MySQLStore</value>
+</property>
+<property>
+ <name>tajo.catalog.uri</name>
+ <value>jdbc:mysql://<mysql host name>:<mysql port>/<database name for tajo>?createDatabaseIfNotExist=true</value>
+</property>
+
+<!-- MariaDB -->
+<property>
+ <name>tajo.catalog.store.class</name>
+ <value>org.apache.tajo.catalog.store.MariaDBStore</value>
+</property>
+<property>
+ <name>tajo.catalog.uri</name>
+ <value>jdbc:mariadb://<mariadb host name>:<mariadb port>/<database name for tajo>?createDatabaseIfNotExist=true</value>
+</property>
+
+<!-- PostgreSQL -->
+<property>
+ <name>tajo.catalog.store.class</name>
+ <value>org.apache.tajo.catalog.store.PostgreSQLStore</value>
+</property>
+<property>
+ <name>tajo.catalog.uri</name>
+ <value>jdbc:postgresql://<postgresql host name>:<postgresql port>/<database name for tajo>?createDatabaseIfNotExist=true</value>
+</property>
+
+<!-- Oracle -->
+<property>
+ <name>tajo.catalog.store.class</name>
+ <value>org.apache.tajo.catalog.store.OracleStore</value>
+</property>
+<property>
+ <name>tajo.catalog.uri</name>
+ <value>jdbc:oracle:thin:@//<oracle host name>:<oracle port>/<ServiceName for tajo database></value>
+</property>
+</pre></div>
+</div>
+</div>
+<div class="section" id="hivecatalogstore-configuration">
+<h2>HiveCatalogStore Configuration<a class="headerlink" href="#hivecatalogstore-configuration" title="Permalink to this headline">¶</a></h2>
+<p>Tajo support HiveCatalogStore to integrate with hive. If you want to use HiveCatalogStore, you just do as follows.</p>
+<p>First, you must compile source code and get a binary archive as follows:</p>
+<div class="highlight-sh"><div class="highlight"><pre>$ git clone https://git-wip-us.apache.org/repos/asf/tajo.git tajo
+$ mvn clean install -DskipTests -Pdist -Dtar
+$ ls tajo-dist/target/tajo-x.y.z-SNAPSHOT.tar.gz
+</pre></div>
+</div>
+<p>Second, you must set your hive home directory to HIVE_HOME variable in <code class="docutils literal"><span class="pre">conf/tajo-env.sh</span></code> with it as follows:</p>
+<div class="highlight-sh"><div class="highlight"><pre><span class="nb">export</span> <span class="nv">HIVE_HOME</span><span class="o">=</span>/path/to/your/hive/directory
+</pre></div>
+</div>
+<p>Third, if you need to use jdbc to connect HiveMetaStore, you have to prepare mysql jdbc driver on host which can be ran TajoMaster. If you prepare it, you should set jdbc driver file path to <code class="docutils literal"><span class="pre">HIVE_JDBC_DRIVER_DIR</span></code> variable in conf/tajo-env.sh with it as follows:</p>
+<div class="highlight-sh"><div class="highlight"><pre><span class="nb">export</span> <span class="nv">HIVE_JDBC_DRIVER_DIR</span><span class="o">=</span>/path/to/your/mysql_jdbc_driver/mysql-connector-java-x.x.x-bin.jar
+</pre></div>
+</div>
+<p>Lastly, you should add the following config to <code class="docutils literal"><span class="pre">conf/catalog-site.xml</span></code> :</p>
+<div class="highlight-xml"><div class="highlight"><pre><span class="nt"><property></span>
+ <span class="nt"><name></span>tajo.catalog.store.class<span class="nt"></name></span>
+ <span class="nt"><value></span>org.apache.tajo.catalog.store.HiveCatalogStore<span class="nt"></value></span>
+<span class="nt"></property></span>
+</pre></div>
+</div>
+</div>
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+<li class="toctree-l2"><a class="reference internal" href="service_config_defaults.html">Cluster Service Configuration Defaults</a></li>
+<li class="toctree-l2"><a class="reference internal" href="tajo-site-xml.html">The tajo-site.xml File</a></li>
+<li class="toctree-l2"><a class="reference internal" href="catalog-site-xml.html">The catalog-site.xml File</a></li>
+<li class="toctree-l2"><a class="reference internal" href="storage-site-json.html">The storage-site.json File</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../tsql.html">Tajo Shell (TSQL)</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../tsql/meta_command.html">Meta Commands</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../tsql/dfs_command.html">Executing HDFS commands</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../tsql/variables.html">Session Variables</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../tsql/admin_command.html">Administration Commands</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../tsql/intro.html">Introducing to TSQL</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../tsql/single_command.html">Executing a single command</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../tsql/execute_file.html">Executing Queries from Files</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../tsql/background_command.html">Executing as background process</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../sql_language.html">SQL Language</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/data_model.html">Data Model</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/ddl.html">Data Definition Language</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/insert.html">INSERT (OVERWRITE) INTO</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/alter_table.html">ALTER TABLE</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/queries.html">Queries</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/joins.html">Joins</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/sql_expression.html">SQL Expressions</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/predicates.html">Predicates</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/explain.html">EXPLAIN</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../time_zone.html">Time Zone</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../time_zone.html#server-cluster-time-zone">Server Cluster Time Zone</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../time_zone.html#table-time-zone">Table Time Zone</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../time_zone.html#time-zone-id">Time Zone ID</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../time_zone.html#examples-of-time-zone">Examples of Time Zone</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../functions.html">Functions</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../functions.html#built-in-scalar-functions">Built-in Scalar Functions</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../functions.html#built-in-aggregation-functions">Built-in Aggregation Functions</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../functions.html#built-in-window-functions">Built-in Window Functions</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../functions.html#user-defined-functions">User-defined Functions</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../table_management.html">Table Management</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../table_management/table_overview.html">Overview of Tajo Tables</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../table_management/tablespaces.html">Tablespaces</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../table_partitioning.html">Table Partitioning</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../partitioning/intro_to_partitioning.html">Introduction to Partitioning</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../partitioning/column_partitioning.html">Column Partitioning</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../partitioning/range_partitioning.html">Range Partitioning</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../partitioning/hash_partitioning.html">Hash Partitioning</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../storage_plugins.html">Storage Plugin</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../storage_plugins/overview.html">Storage Plugin Overview</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../storage_plugins/postgresql.html">PostgreSQL Storage Handler</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../index_overview.html">Index (Experimental Feature)</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../index/types.html">Index Types</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../index/how_to_use.html">How to use index?</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../index/future_work.html">Future Works</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../backup_and_restore.html">Backup and Restore</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../backup_and_restore/catalog.html">Backup and Restore Catalog</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../hbase_integration.html">HBase Integration</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../hbase_integration.html#create-table">CREATE TABLE</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../hbase_integration.html#drop-table">DROP TABLE</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../hbase_integration.html#insert-overwrite-into">INSERT (OVERWRITE) INTO</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../hbase_integration.html#usage">Usage</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../swift_integration.html">OpenStack Swift Integration</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../swift_integration.html#swift-configuration">Swift configuration</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../swift_integration.html#hadoop-configurations">Hadoop configurations</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../swift_integration.html#tajo-configuration">Tajo configuration</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../swift_integration.html#querying-on-swift">Querying on Swift</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../jdbc_driver.html">Tajo JDBC Driver</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../jdbc_driver.html#how-to-get-jdbc-driver">How to get JDBC driver</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../jdbc_driver.html#setting-the-classpath">Setting the CLASSPATH</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../jdbc_driver.html#connecting-to-the-tajo-cluster-instance">Connecting to the Tajo cluster instance</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../jdbc_driver.html#connection-parameters">Connection Parameters</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../jdbc_driver.html#an-example-jdbc-client">An Example JDBC Client</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../tajo_client_api.html">Tajo Client API</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../faq.html">FAQ</a></li>
+</ul>
+
+
+ </div>
+
+ </nav>
+
+ <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap">
+
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+ <nav class="wy-nav-top" role="navigation" aria-label="top navigation">
+ <i data-toggle="wy-nav-top" class="fa fa-bars"></i>
+ <a href="../index.html">Apache Tajo</a>
+ </nav>
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+ <li><a href="../index.html">Docs</a> »</li>
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+ <li><a href="../configuration.html">Configuration</a> »</li>
+
+ <li>Cluster Setup</li>
+ <li class="wy-breadcrumbs-aside">
+
+ <a href="../_sources/configuration/cluster_setup.txt" rel="nofollow"> View page source</a>
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+ </ul>
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+</div>
+ <div role="main">
+
+ <div class="section" id="cluster-setup">
+<h1>Cluster Setup<a class="headerlink" href="#cluster-setup" title="Permalink to this headline">¶</a></h1>
+<div class="section" id="fully-distributed-mode">
+<h2>Fully Distributed Mode<a class="headerlink" href="#fully-distributed-mode" title="Permalink to this headline">¶</a></h2>
+<p>A fully distributed mode enables a Tajo instance to run on <a class="reference external" href="http://wiki.apache.org/hadoop/HDFS">Hadoop Distributed File System (HDFS)</a>. In this mode, a number of Tajo workers run across a number of the physical nodes where HDFS data nodes run.</p>
+<p>In this section, we explain how to setup the cluster mode.</p>
+<div class="section" id="settings">
+<h3>Settings<a class="headerlink" href="#settings" title="Permalink to this headline">¶</a></h3>
+<p>Please add the following configs to tajo-site.xml file:</p>
+<div class="highlight-xml"><div class="highlight"><pre><span class="nt"><property></span>
+ <span class="nt"><name></span>tajo.rootdir<span class="nt"></name></span>
+ <span class="nt"><value></span>hdfs://hostname:port/tajo<span class="nt"></value></span>
+<span class="nt"></property></span>
+
+<span class="nt"><property></span>
+ <span class="nt"><name></span>tajo.master.umbilical-rpc.address<span class="nt"></name></span>
+ <span class="nt"><value></span>hostname:26001<span class="nt"></value></span>
+<span class="nt"></property></span>
+
+<span class="nt"><property></span>
+ <span class="nt"><name></span>tajo.master.client-rpc.address<span class="nt"></name></span>
+ <span class="nt"><value></span>hostname:26002<span class="nt"></value></span>
+<span class="nt"></property></span>
+
+<span class="nt"><property></span>
+ <span class="nt"><name></span>tajo.resource-tracker.rpc.address<span class="nt"></name></span>
+ <span class="nt"><value></span>hostname:26003<span class="nt"></value></span>
+<span class="nt"></property></span>
+
+<span class="nt"><property></span>
+ <span class="nt"><name></span>tajo.catalog.client-rpc.address<span class="nt"></name></span>
+ <span class="nt"><value></span>hostname:26005<span class="nt"></value></span>
+<span class="nt"></property></span>
+</pre></div>
+</div>
+</div>
+<div class="section" id="workers">
+<h3>Workers<a class="headerlink" href="#workers" title="Permalink to this headline">¶</a></h3>
+<p>The file <code class="docutils literal"><span class="pre">conf/workers</span></code> lists all host names of workers, one per line.
+By default, this file contains the single entry <code class="docutils literal"><span class="pre">localhost</span></code>.
+You can easily add host names of workers via your favorite text editor.</p>
+<p>For example:</p>
+<div class="highlight-python"><div class="highlight"><pre>$ cat > conf/workers
+host1.domain.com
+host2.domain.com
+....
+
+<ctrl + d>
+</pre></div>
+</div>
+</div>
+<div class="section" id="make-base-directories-and-set-permissions">
+<h3>Make base directories and set permissions<a class="headerlink" href="#make-base-directories-and-set-permissions" title="Permalink to this headline">¶</a></h3>
+<p>If you want to know Tajoâs configuration in more detail, see Configuration page.
+Before launching the tajo, you should create the tajo root dir and set the permission as follows:</p>
+<div class="highlight-python"><div class="highlight"><pre>$ $HADOOP_HOME/bin/hadoop fs -mkdir /tajo
+$ $HADOOP_HOME/bin/hadoop fs -chmod g+w /tajo
+</pre></div>
+</div>
+</div>
+<div class="section" id="launch-a-tajo-cluster">
+<h3>Launch a Tajo cluster<a class="headerlink" href="#launch-a-tajo-cluster" title="Permalink to this headline">¶</a></h3>
+<p>Then, execute <code class="docutils literal"><span class="pre">start-tajo.sh</span></code></p>
+<div class="highlight-python"><div class="highlight"><pre>$ $TAJO_HOME/bin/start-tajo.sh
+</pre></div>
+</div>
+<div class="admonition note">
+<p class="first admonition-title">Note</p>
+<p class="last">In default, each worker is set to very little resource capacity. In order to increase parallel degree, please read
+<a class="reference internal" href="worker_configuration.html"><em>Worker Configuration</em></a>.</p>
+</div>
+<div class="admonition note">
+<p class="first admonition-title">Note</p>
+<p class="last">In default, TajoMaster listens on 127.0.0.1 for clients. To allow remote clients to access TajoMaster, please set tajo.master.client-rpc.address config to tajo-site.xml. In order to know how to change the listen port, please refer <a class="reference internal" href="service_config_defaults.html"><em>Cluster Service Configuration Defaults</em></a>.</p>
+</div>
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\ No newline at end of file
Added: tajo/site/docs/0.11.1/configuration/ha_configuration.html
URL: http://svn.apache.org/viewvc/tajo/site/docs/0.11.1/configuration/ha_configuration.html?rev=1728394&view=auto
==============================================================================
--- tajo/site/docs/0.11.1/configuration/ha_configuration.html (added)
+++ tajo/site/docs/0.11.1/configuration/ha_configuration.html Thu Feb 4 00:29:05 2016
@@ -0,0 +1,404 @@
+
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+<li class="toctree-l2"><a class="reference internal" href="../getting_started.html#prerequisites">Prerequisites</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../getting_started.html#dowload-and-unpack-the-source-code">Dowload and unpack the source code</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../getting_started.html#build-source-code">Build source code</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../getting_started.html#setting-up-a-local-tajo-cluster">Setting up a local Tajo cluster</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../getting_started.html#first-query-execution">First query execution</a></li>
+</ul>
+</li>
+<li class="toctree-l1 current"><a class="reference internal" href="../configuration.html">Configuration</a><ul class="current">
+<li class="toctree-l2"><a class="reference internal" href="preliminary.html">Preliminary</a></li>
+<li class="toctree-l2"><a class="reference internal" href="cluster_setup.html">Cluster Setup</a></li>
+<li class="toctree-l2"><a class="reference internal" href="tajo_master_configuration.html">Tajo Master Configuration</a></li>
+<li class="toctree-l2"><a class="reference internal" href="worker_configuration.html">Worker Configuration</a></li>
+<li class="toctree-l2"><a class="reference internal" href="catalog_configuration.html">Catalog Configuration</a></li>
+<li class="toctree-l2 current"><a class="current reference internal" href="">High Availability for TajoMaster</a></li>
+<li class="toctree-l2"><a class="reference internal" href="service_config_defaults.html">Cluster Service Configuration Defaults</a></li>
+<li class="toctree-l2"><a class="reference internal" href="tajo-site-xml.html">The tajo-site.xml File</a></li>
+<li class="toctree-l2"><a class="reference internal" href="catalog-site-xml.html">The catalog-site.xml File</a></li>
+<li class="toctree-l2"><a class="reference internal" href="storage-site-json.html">The storage-site.json File</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../tsql.html">Tajo Shell (TSQL)</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../tsql/meta_command.html">Meta Commands</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../tsql/dfs_command.html">Executing HDFS commands</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../tsql/variables.html">Session Variables</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../tsql/single_command.html">Executing a single command</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../tsql/execute_file.html">Executing Queries from Files</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../tsql/background_command.html">Executing as background process</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="../sql_language.html">SQL Language</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/data_model.html">Data Model</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../sql_language/insert.html">INSERT (OVERWRITE) INTO</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/alter_table.html">ALTER TABLE</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/queries.html">Queries</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/joins.html">Joins</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/sql_expression.html">SQL Expressions</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/predicates.html">Predicates</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../sql_language/explain.html">EXPLAIN</a></li>
+</ul>
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+<li class="toctree-l1"><a class="reference internal" href="../time_zone.html">Time Zone</a><ul>
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+ <div class="section" id="high-availability-for-tajomaster">
+<h1>High Availability for TajoMaster<a class="headerlink" href="#high-availability-for-tajomaster" title="Permalink to this headline">¶</a></h1>
+<p>TajoMaster is a Single Point of Failure in a Tajo Cluster because TajoMaster is the central controlling entity for all components of the Tajo system. TajoMaster failure prevents clients from submitting new queries to the cluster, and results in the disruption of the ability to run insert overwrite queries because the TajoWorker canât apply its statistical information to CatalogStore. Therefore, the high-availability (HA) of TajoMaster is essential for the high-availability of Tajo generally.</p>
+<p>Currently, TajoMaster HA provides the following elements:</p>
+<ul class="simple">
+<li>Automatic failover of TajoMaster: Even if the active TajoMaster stops, the standby TajoMaster will become the active node.</li>
+<li>Preservation of the ongoing query in the cluster: Even if the active TajoMaster stops, the ongoing query will still complete in the cluster.</li>
+</ul>
+<div class="section" id="terminology">
+<h2>Terminology<a class="headerlink" href="#terminology" title="Permalink to this headline">¶</a></h2>
+<ul class="simple">
+<li>Active master: TajoMaster that is actively serving the all operation from TajoClient and TajoWorker.</li>
+<li>Backup master: This TajoMaster waits becomes active when the Active dies or unhealthy. Users can setup multiple back TajoMaster, and this servers monitors the Active status to become active.</li>
+</ul>
+</div>
+<div class="section" id="configuration-file-settings">
+<h2>Configuration File Settings<a class="headerlink" href="#configuration-file-settings" title="Permalink to this headline">¶</a></h2>
+<p>If you want to use TajoMaster HA mode, specific your <code class="docutils literal"><span class="pre">tajo.master.ha.enable</span></code> as follows:</p>
+<div class="highlight-xml"><div class="highlight"><pre><span class="nt"><property></span>
+ <span class="nt"><name></span>tajo.master.ha.enable<span class="nt"></name></span>
+ <span class="nt"><value></span>true<span class="nt"></value></span>
+<span class="nt"></property></span>
+</pre></div>
+</div>
+<p>If you use HA mode, all back masters monitor the active master at 5 second intervals. If you update this period, specific your <code class="docutils literal"><span class="pre">tajo.master.ha.monitor.interval</span></code> as follows:</p>
+<div class="highlight-xml"><div class="highlight"><pre><span class="nt"><property></span>
+ <span class="nt"><name></span>tajo.master.ha.monitor.interval<span class="nt"></name></span>
+ <span class="nt"><value></span>monitor interval<span class="nt"></value></span>
+<span class="nt"></property></span>
+</pre></div>
+</div>
+</div>
+<div class="section" id="backup-master-settings">
+<h2>Backup Master Settings<a class="headerlink" href="#backup-master-settings" title="Permalink to this headline">¶</a></h2>
+<p>If you want to run masters with <code class="docutils literal"><span class="pre">start-tajo.sh</span></code>, specific your masters in <code class="docutils literal"><span class="pre">conf/masters</span></code>. The file lists all host names of masters, one per line.By default, this file contains the single entry <code class="docutils literal"><span class="pre">localhost</span></code>. You can easily add host names of workers via your favorite text editor.</p>
+<p>For example:</p>
+<div class="highlight-python"><div class="highlight"><pre>$ cat > conf/masters
+host1.domain.com
+host2.domain.com
+....
+
+<ctrl + d>
+</pre></div>
+</div>
+<p>And then, you need to setup tarball and set configuration files on backup masters.</p>
+<div class="admonition note">
+<p class="first admonition-title">Note</p>
+<p>If you want to run active master and backup master on the same host, you may find TajoMaster port conflicts. To avoid this problem, you must convert backup master primary ports to another port in <code class="docutils literal"><span class="pre">tajo-site.xml</span></code> as follows:</p>
+<div class="highlight-xml"><div class="highlight"><pre><span class="nt"><property></span>
+ <span class="nt"><name></span>tajo.master.umbilical-rpc.address<span class="nt"></name></span>
+ <span class="nt"><value></span>localhost:36001<span class="nt"></value></span>
+ <span class="nt"><description></span>The default port is 26001.<span class="nt"></description></span>
+<span class="nt"></property></span>
+
+<span class="nt"><property></span>
+ <span class="nt"><name></span>tajo.master.client-rpc.address<span class="nt"></name></span>
+ <span class="nt"><value></span>localhost:36002<span class="nt"></value></span>
+ <span class="nt"><description></span>The default port is 26002.<span class="nt"></description></span>
+<span class="nt"></property></span>
+
+<span class="nt"><property></span>
+ <span class="nt"><name></span>tajo.resource-tracker.rpc.address<span class="nt"></name></span>
+ <span class="nt"><value></span>localhost:36003<span class="nt"></value></span>
+ <span class="nt"><description></span>The default port is 26003.<span class="nt"></description></span>
+ <span class="nt"></property></span>
+
+<span class="nt"><property></span>
+ <span class="nt"><name></span>tajo.catalog.client-rpc.address<span class="nt"></name></span>
+ <span class="nt"><value></span>localhost:36005<span class="nt"></value></span>
+ <span class="nt"><description></span>The default port is 26005.<span class="nt"></description></span>
+<span class="nt"></property></span>
+
+<span class="nt"><property></span>
+ <span class="nt"><name></span>tajo.master.info-http.address<span class="nt"></name></span>
+ <span class="nt"><value></span>0.0.0.0:36080<span class="nt"></value></span>
+ <span class="nt"><description></span>The default port is 26080.<span class="nt"></description></span>
+<span class="nt"></property></span>
+</pre></div>
+</div>
+<p class="last">And you need to convert <code class="docutils literal"><span class="pre">TAJO_PID_DIR</span></code> to another directory in <code class="docutils literal"><span class="pre">tajo-env.sh</span></code>.</p>
+</div>
+</div>
+<div class="section" id="launch-a-tajo-cluster">
+<h2>Launch a Tajo cluster<a class="headerlink" href="#launch-a-tajo-cluster" title="Permalink to this headline">¶</a></h2>
+<p>Then, execute <code class="docutils literal"><span class="pre">start-tajo.sh</span></code></p>
+<div class="highlight-python"><div class="highlight"><pre>$ $TAJO_HOME/bin/start-tajo.sh
+</pre></div>
+</div>
+<div class="admonition note">
+<p class="first admonition-title">Note</p>
+<p class="last">You can’t use HA mode in DerbyStore. Currently, just one TajoMaster invoke the derby. If another master try to invoke it, it never run itself. Also, if you set another catalog uri for backup master, it is a incorrect configuration. Because they are unequal in every way.</p>
+</div>
+</div>
+<div class="section" id="administration-ha-state">
+<h2>Administration HA state<a class="headerlink" href="#administration-ha-state" title="Permalink to this headline">¶</a></h2>
+<p>If you want to transit any backup master to active master, execute <code class="docutils literal"><span class="pre">tajo</span> <span class="pre">hadmin</span> <span class="pre">-transitionToActive</span></code></p>
+<div class="highlight-python"><div class="highlight"><pre>$ $TAJO_HOME/bin/tajo haadmin -transitionToActive <target tajo.master.umbilical-rpc.address>
+</pre></div>
+</div>
+<p>If you want to transit any active master to backup master, execute <code class="docutils literal"><span class="pre">tajo</span> <span class="pre">hadmin</span> <span class="pre">-transitionToBackup</span></code></p>
+<div class="highlight-python"><div class="highlight"><pre>$ $TAJO_HOME/bin/tajo haadmin -transitionToBackup <target tajo.master.umbilical-rpc.address>
+</pre></div>
+</div>
+<p>If you want to find the state of any master, execute <code class="docutils literal"><span class="pre">tajo</span> <span class="pre">hadmin</span> <span class="pre">-getState</span></code></p>
+<div class="highlight-python"><div class="highlight"><pre>$ $TAJO_HOME/bin/tajo haadmin -getState <target tajo.master.umbilical-rpc.address>
+</pre></div>
+</div>
+<p>If you want to initiate HA information, execute <code class="docutils literal"><span class="pre">tajo</span> <span class="pre">haadmin</span> <span class="pre">-formatHA</span></code></p>
+<div class="highlight-python"><div class="highlight"><pre>$ $TAJO_HOME/bin/tajo haadmin -formatHA
+</pre></div>
+</div>
+<div class="admonition note">
+<p class="first admonition-title">Note</p>
+<p class="last">Before format HA, you must shutdown the Tajo cluster.</p>
+</div>
+</div>
+<div class="section" id="how-to-test-automatic-failover">
+<h2>How to Test Automatic Failover<a class="headerlink" href="#how-to-test-automatic-failover" title="Permalink to this headline">¶</a></h2>
+<p>If you want to verify automatic failover of TajoMaster, you must deploy your Tajo cluster with TajoMaster HA enable. And then, you need to find which node is active from Tajo web UI.</p>
+<p>Once you find your active TajoMaster, you can cause a failure on that node. For example, you can use kill -9 <pid of TajoMaster> to simulate a JVM crash. Or you can shutdown the machine or disconnect network interface. And then, the backup TajoMaster will be automatically active within 5 seconds. The amount of time required to detect a failure and trigger a failover depends on the config <code class="docutils literal"><span class="pre">tajo.master.ha.monitor.interval</span></code>. If there is running queries, it will be finished successfully. Because your TajoClient will get the result data on TajoWorker. But you can’t find already query history. Because TajoMaster stores query history on memory. So, the other master can’t access already active master query history. And if there is no running query, the automatic failover run successfully.</p>
+<div class="admonition note">
+<p class="first admonition-title">Note</p>
+<p class="last">TajoMaster HA does not consider TajoWorker failure. It guarantees the high availability of both TajoResourceManager and QueryMaster.</p>
+</div>
+</div>
+</div>
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