You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@tajo.apache.org by ji...@apache.org on 2016/05/19 02:00:27 UTC
svn commit: r1744489 [28/43] - in /tajo/site/docs: 0.11.3/ 0.11.3/_sources/
0.11.3/_sources/backup_and_restore/ 0.11.3/_sources/configuration/
0.11.3/_sources/functions/ 0.11.3/_sources/index/
0.11.3/_sources/partitioning/ 0.11.3/_sources/sql_language/...
Added: tajo/site/docs/0.11.3/table_management.html
URL: http://svn.apache.org/viewvc/tajo/site/docs/0.11.3/table_management.html?rev=1744489&view=auto
==============================================================================
--- tajo/site/docs/0.11.3/table_management.html (added)
+++ tajo/site/docs/0.11.3/table_management.html Thu May 19 02:00:25 2016
@@ -0,0 +1,287 @@
+
+
+<!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>Table Management — Apache Tajo 0.11.3 documentation</title>
+
+
+
+
+
+
+ <link href='https://fonts.googleapis.com/css?family=Lato:400,700|Roboto+Slab:400,700|Inconsolata:400,700' rel='stylesheet' type='text/css'>
+
+
+
+
+
+
+
+
+
+ <link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
+
+
+
+ <link rel="top" title="Apache Tajo 0.11.3 documentation" href="index.html"/>
+ <link rel="next" title="Overview of Tajo Tables" href="table_management/table_overview.html"/>
+ <link rel="prev" title="Python Functions" href="functions/python.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">
+
+
+ <nav data-toggle="wy-nav-shift" class="wy-nav-side">
+ <div class="wy-side-nav-search">
+ <a href="index.html" class="fa fa-home"> Apache Tajo</a>
+ <div role="search">
+ <form id ="rtd-search-form" class="wy-form" action="search.html" method="get">
+ <input type="text" name="q" placeholder="Search docs" />
+ <input type="hidden" name="check_keywords" value="yes" />
+ <input type="hidden" name="area" value="default" />
+ </form>
+</div>
+ </div>
+
+ <div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="main navigation">
+
+
+ <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"><a class="reference internal" href="configuration.html">Configuration</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="configuration/preliminary.html">Preliminary</a></li>
+<li class="toctree-l2"><a class="reference internal" href="configuration/cluster_setup.html">Cluster Setup</a></li>
+<li class="toctree-l2"><a class="reference internal" href="configuration/tajo_master_configuration.html">Tajo Master Configuration</a></li>
+<li class="toctree-l2"><a class="reference internal" href="configuration/worker_configuration.html">Worker Configuration</a></li>
+<li class="toctree-l2"><a class="reference internal" href="configuration/catalog_configuration.html">Catalog Configuration</a></li>
+<li class="toctree-l2"><a class="reference internal" href="configuration/ha_configuration.html">High Availability for TajoMaster</a></li>
+<li class="toctree-l2"><a class="reference internal" href="configuration/service_config_defaults.html">Cluster Service Configuration Defaults</a></li>
+<li class="toctree-l2"><a class="reference internal" href="configuration/tajo-site-xml.html">The tajo-site.xml File</a></li>
+<li class="toctree-l2"><a class="reference internal" href="configuration/catalog-site-xml.html">The catalog-site.xml File</a></li>
+<li class="toctree-l2"><a class="reference internal" href="configuration/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 current"><a class="current reference internal" href="">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">
+
+
+ <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>
+
+
+
+ <div class="wy-nav-content">
+ <div class="rst-content">
+ <div role="navigation" aria-label="breadcrumbs navigation">
+ <ul class="wy-breadcrumbs">
+ <li><a href="index.html">Docs</a> »</li>
+
+ <li>Table Management</li>
+ <li class="wy-breadcrumbs-aside">
+
+ <a href="_sources/table_management.txt" rel="nofollow"> View page source</a>
+
+ </li>
+ </ul>
+ <hr/>
+</div>
+ <div role="main">
+
+ <div class="section" id="table-management">
+<h1>Table Management<a class="headerlink" href="#table-management" title="Permalink to this headline">¶</a></h1>
+<p>In Tajo, a table is a logical view of one data sources. Logically, one table consists of a logical schema, partitions, URL, and various properties. Physically, A table can be a directory in HDFS, a single file, one HBase table, or a RDBMS table. In order to make good use of Tajo, users need to understand features and physical characteristics of their physical layout. This section explains all about table management.</p>
+<div class="toctree-wrapper compound">
+<ul>
+<li class="toctree-l1"><a class="reference internal" href="table_management/table_overview.html">Overview of Tajo Tables</a></li>
+<li class="toctree-l1"><a class="reference internal" href="table_management/tablespaces.html">Tablespaces</a></li>
+<li class="toctree-l1"><a class="reference internal" href="table_management/data_formats.html">Data Formats</a></li>
+<li class="toctree-l1"><a class="reference internal" href="table_management/compression.html">Compression</a></li>
+</ul>
+</div>
+</div>
+
+
+ </div>
+ <footer>
+
+ <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation">
+
+ <a href="table_management/table_overview.html" class="btn btn-neutral float-right" title="Overview of Tajo Tables"/>Next <span class="fa fa-arrow-circle-right"></span></a>
+
+
+ <a href="functions/python.html" class="btn btn-neutral" title="Python Functions"><span class="fa fa-arrow-circle-left"></span> Previous</a>
+
+ </div>
+
+
+ <hr/>
+
+ <div role="contentinfo">
+ <p>
+ © Copyright 2016, Apache Tajo Team.
+ </p>
+ </div>
+
+ <a href="https://github.com/snide/sphinx_rtd_theme">Sphinx theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>
+</footer>
+ </div>
+ </div>
+
+ </section>
+
+ </div>
+
+
+
+
+
+ <script type="text/javascript">
+ var DOCUMENTATION_OPTIONS = {
+ URL_ROOT:'./',
+ VERSION:'0.11.3',
+ COLLAPSE_INDEX:false,
+ FILE_SUFFIX:'.html',
+ HAS_SOURCE: true
+ };
+ </script>
+ <script type="text/javascript" src="_static/jquery.js"></script>
+ <script type="text/javascript" src="_static/underscore.js"></script>
+ <script type="text/javascript" src="_static/doctools.js"></script>
+
+
+
+
+
+ <script type="text/javascript" src="_static/js/theme.js"></script>
+
+
+
+
+ <script type="text/javascript">
+ jQuery(function () {
+ SphinxRtdTheme.StickyNav.enable();
+ });
+ </script>
+
+
+</body>
+</html>
\ No newline at end of file
Added: tajo/site/docs/0.11.3/table_management/compression.html
URL: http://svn.apache.org/viewvc/tajo/site/docs/0.11.3/table_management/compression.html?rev=1744489&view=auto
==============================================================================
--- tajo/site/docs/0.11.3/table_management/compression.html (added)
+++ tajo/site/docs/0.11.3/table_management/compression.html Thu May 19 02:00:25 2016
@@ -0,0 +1,327 @@
+
+
+<!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>Compression — Apache Tajo 0.11.3 documentation</title>
+
+
+
+
+
+
+ <link href='https://fonts.googleapis.com/css?family=Lato:400,700|Roboto+Slab:400,700|Inconsolata:400,700' rel='stylesheet' type='text/css'>
+
+
+
+
+
+
+
+
+
+ <link rel="stylesheet" href="../_static/css/theme.css" type="text/css" />
+
+
+
+ <link rel="top" title="Apache Tajo 0.11.3 documentation" href="../index.html"/>
+ <link rel="up" title="Table Management" href="../table_management.html"/>
+ <link rel="next" title="Table Partitioning" href="../table_partitioning.html"/>
+ <link rel="prev" title="SequenceFile" href="sequencefile.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">
+
+
+ <nav data-toggle="wy-nav-shift" class="wy-nav-side">
+ <div class="wy-side-nav-search">
+ <a href="../index.html" class="fa fa-home"> Apache Tajo</a>
+ <div role="search">
+ <form id ="rtd-search-form" class="wy-form" action="../search.html" method="get">
+ <input type="text" name="q" placeholder="Search docs" />
+ <input type="hidden" name="check_keywords" value="yes" />
+ <input type="hidden" name="area" value="default" />
+ </form>
+</div>
+ </div>
+
+ <div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="main navigation">
+
+
+ <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"><a class="reference internal" href="../configuration.html">Configuration</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../configuration/preliminary.html">Preliminary</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../configuration/cluster_setup.html">Cluster Setup</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../configuration/tajo_master_configuration.html">Tajo Master Configuration</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../configuration/worker_configuration.html">Worker Configuration</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../configuration/catalog_configuration.html">Catalog Configuration</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../configuration/ha_configuration.html">High Availability for TajoMaster</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../configuration/service_config_defaults.html">Cluster Service Configuration Defaults</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../configuration/tajo-site-xml.html">The tajo-site.xml File</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../configuration/catalog-site-xml.html">The catalog-site.xml File</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../configuration/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 current"><a class="reference internal" href="../table_management.html">Table Management</a><ul class="current">
+<li class="toctree-l2"><a class="reference internal" href="table_overview.html">Overview of Tajo Tables</a></li>
+<li class="toctree-l2"><a class="reference internal" href="tablespaces.html">Tablespaces</a></li>
+<li class="toctree-l2"><a class="reference internal" href="data_formats.html">Data Formats</a></li>
+<li class="toctree-l2 current"><a class="current reference internal" href="">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">
+
+
+ <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>
+
+
+
+ <div class="wy-nav-content">
+ <div class="rst-content">
+ <div role="navigation" aria-label="breadcrumbs navigation">
+ <ul class="wy-breadcrumbs">
+ <li><a href="../index.html">Docs</a> »</li>
+
+ <li><a href="../table_management.html">Table Management</a> »</li>
+
+ <li>Compression</li>
+ <li class="wy-breadcrumbs-aside">
+
+ <a href="../_sources/table_management/compression.txt" rel="nofollow"> View page source</a>
+
+ </li>
+ </ul>
+ <hr/>
+</div>
+ <div role="main">
+
+ <div class="section" id="compression">
+<h1>Compression<a class="headerlink" href="#compression" title="Permalink to this headline">¶</a></h1>
+<p>Using compression can make data size compact, thereby enabling efficient use of network bandwidth and storage. Most of Tajo data formats support data compression feature.
+Currently, compression configuration affects only for stored data format and it is enabled when a table is created with the proper table property(See <a class="reference external" href="../sql_language/ddl.html#create-table">Create Table</a>).</p>
+<div class="section" id="compression-properties-for-each-data-format">
+<h2>Compression Properties for each Data Format<a class="headerlink" href="#compression-properties-for-each-data-format" title="Permalink to this headline">¶</a></h2>
+<blockquote>
+<div><table border="1" class="docutils">
+<caption>Compression Properties</caption>
+<colgroup>
+<col width="33%" />
+<col width="33%" />
+<col width="33%" />
+</colgroup>
+<tbody valign="top">
+<tr class="row-odd"><td><strong>Data Format</strong></td>
+<td><strong>Property Name</strong></td>
+<td><strong>Avaliable Values</strong></td>
+</tr>
+<tr class="row-even"><td><a class="reference internal" href="text.html"><em>text</em></a>/<a class="reference internal" href="json.html"><em>json</em></a>/<a class="reference internal" href="rcfile.html"><em>rcfile</em></a>/<a class="reference internal" href="sequencefile.html"><em>sequencefile</em></a> <a class="footnote-reference" href="#f1" id="id1">[1]</a></td>
+<td>compression.codec</td>
+<td>Fully Qualified Classname in Hadoop <a class="footnote-reference" href="#f2" id="id2">[2]</a></td>
+</tr>
+<tr class="row-odd"><td><a class="reference internal" href="parquet.html"><em>parquet</em></a></td>
+<td>parquet.compression</td>
+<td>uncompressed/snappy/gzip/lzo</td>
+</tr>
+<tr class="row-even"><td><a class="reference internal" href="orc.html"><em>orc</em></a></td>
+<td>orc.compression.kind</td>
+<td>none/snappy/zlib</td>
+</tr>
+</tbody>
+</table>
+</div></blockquote>
+<p class="rubric">Footnotes</p>
+<table class="docutils footnote" frame="void" id="f1" rules="none">
+<colgroup><col class="label" /><col /></colgroup>
+<tbody valign="top">
+<tr><td class="label"><a class="fn-backref" href="#id1">[1]</a></td><td>For sequence file, you should specify ‘compression.type’ in addition to ‘compression.codec’. Refer to <a class="reference internal" href="sequencefile.html"><em>SequenceFile</em></a>.</td></tr>
+</tbody>
+</table>
+<table class="docutils footnote" frame="void" id="f2" rules="none">
+<colgroup><col class="label" /><col /></colgroup>
+<tbody valign="top">
+<tr><td class="label"><a class="fn-backref" href="#id2">[2]</a></td><td>All classes are available if they implement <a class="reference external" href="https://hadoop.apache.org/docs/current/api/org/apache/hadoop/io/compress/CompressionCodec.html">org.apache.hadoop.io.compress.CompressionCodec</a>.</td></tr>
+</tbody>
+</table>
+</div>
+</div>
+
+
+ </div>
+ <footer>
+
+ <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation">
+
+ <a href="../table_partitioning.html" class="btn btn-neutral float-right" title="Table Partitioning"/>Next <span class="fa fa-arrow-circle-right"></span></a>
+
+
+ <a href="sequencefile.html" class="btn btn-neutral" title="SequenceFile"><span class="fa fa-arrow-circle-left"></span> Previous</a>
+
+ </div>
+
+
+ <hr/>
+
+ <div role="contentinfo">
+ <p>
+ © Copyright 2016, Apache Tajo Team.
+ </p>
+ </div>
+
+ <a href="https://github.com/snide/sphinx_rtd_theme">Sphinx theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>
+</footer>
+ </div>
+ </div>
+
+ </section>
+
+ </div>
+
+
+
+
+
+ <script type="text/javascript">
+ var DOCUMENTATION_OPTIONS = {
+ URL_ROOT:'../',
+ VERSION:'0.11.3',
+ COLLAPSE_INDEX:false,
+ FILE_SUFFIX:'.html',
+ HAS_SOURCE: true
+ };
+ </script>
+ <script type="text/javascript" src="../_static/jquery.js"></script>
+ <script type="text/javascript" src="../_static/underscore.js"></script>
+ <script type="text/javascript" src="../_static/doctools.js"></script>
+
+
+
+
+
+ <script type="text/javascript" src="../_static/js/theme.js"></script>
+
+
+
+
+ <script type="text/javascript">
+ jQuery(function () {
+ SphinxRtdTheme.StickyNav.enable();
+ });
+ </script>
+
+
+</body>
+</html>
\ No newline at end of file
Added: tajo/site/docs/0.11.3/table_management/data_formats.html
URL: http://svn.apache.org/viewvc/tajo/site/docs/0.11.3/table_management/data_formats.html?rev=1744489&view=auto
==============================================================================
--- tajo/site/docs/0.11.3/table_management/data_formats.html (added)
+++ tajo/site/docs/0.11.3/table_management/data_formats.html Thu May 19 02:00:25 2016
@@ -0,0 +1,292 @@
+
+
+<!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>Data Formats — Apache Tajo 0.11.3 documentation</title>
+
+
+
+
+
+
+ <link href='https://fonts.googleapis.com/css?family=Lato:400,700|Roboto+Slab:400,700|Inconsolata:400,700' rel='stylesheet' type='text/css'>
+
+
+
+
+
+
+
+
+
+ <link rel="stylesheet" href="../_static/css/theme.css" type="text/css" />
+
+
+
+ <link rel="top" title="Apache Tajo 0.11.3 documentation" href="../index.html"/>
+ <link rel="up" title="Table Management" href="../table_management.html"/>
+ <link rel="next" title="TEXT" href="text.html"/>
+ <link rel="prev" title="Tablespaces" href="tablespaces.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">
+
+
+ <nav data-toggle="wy-nav-shift" class="wy-nav-side">
+ <div class="wy-side-nav-search">
+ <a href="../index.html" class="fa fa-home"> Apache Tajo</a>
+ <div role="search">
+ <form id ="rtd-search-form" class="wy-form" action="../search.html" method="get">
+ <input type="text" name="q" placeholder="Search docs" />
+ <input type="hidden" name="check_keywords" value="yes" />
+ <input type="hidden" name="area" value="default" />
+ </form>
+</div>
+ </div>
+
+ <div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="main navigation">
+
+
+ <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"><a class="reference internal" href="../configuration.html">Configuration</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../configuration/preliminary.html">Preliminary</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../configuration/cluster_setup.html">Cluster Setup</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../configuration/tajo_master_configuration.html">Tajo Master Configuration</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../configuration/worker_configuration.html">Worker Configuration</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../configuration/catalog_configuration.html">Catalog Configuration</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../configuration/ha_configuration.html">High Availability for TajoMaster</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../configuration/service_config_defaults.html">Cluster Service Configuration Defaults</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../configuration/tajo-site-xml.html">The tajo-site.xml File</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../configuration/catalog-site-xml.html">The catalog-site.xml File</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../configuration/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 current"><a class="reference internal" href="../table_management.html">Table Management</a><ul class="current">
+<li class="toctree-l2"><a class="reference internal" href="table_overview.html">Overview of Tajo Tables</a></li>
+<li class="toctree-l2"><a class="reference internal" href="tablespaces.html">Tablespaces</a></li>
+<li class="toctree-l2 current"><a class="current reference internal" href="">Data Formats</a></li>
+<li class="toctree-l2"><a class="reference internal" href="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">
+
+
+ <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>
+
+
+
+ <div class="wy-nav-content">
+ <div class="rst-content">
+ <div role="navigation" aria-label="breadcrumbs navigation">
+ <ul class="wy-breadcrumbs">
+ <li><a href="../index.html">Docs</a> »</li>
+
+ <li><a href="../table_management.html">Table Management</a> »</li>
+
+ <li>Data Formats</li>
+ <li class="wy-breadcrumbs-aside">
+
+ <a href="../_sources/table_management/data_formats.txt" rel="nofollow"> View page source</a>
+
+ </li>
+ </ul>
+ <hr/>
+</div>
+ <div role="main">
+
+ <div class="section" id="data-formats">
+<h1>Data Formats<a class="headerlink" href="#data-formats" title="Permalink to this headline">¶</a></h1>
+<p>Currently, Tajo provides following data formats:</p>
+<div class="toctree-wrapper compound">
+<ul>
+<li class="toctree-l1"><a class="reference internal" href="text.html">TEXT</a></li>
+<li class="toctree-l1"><a class="reference internal" href="json.html">JSON</a></li>
+<li class="toctree-l1"><a class="reference internal" href="rcfile.html">RCFile</a></li>
+<li class="toctree-l1"><a class="reference internal" href="parquet.html">Parquet</a></li>
+<li class="toctree-l1"><a class="reference internal" href="orc.html">ORC</a></li>
+<li class="toctree-l1"><a class="reference internal" href="sequencefile.html">SequenceFile</a></li>
+</ul>
+</div>
+</div>
+
+
+ </div>
+ <footer>
+
+ <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation">
+
+ <a href="text.html" class="btn btn-neutral float-right" title="TEXT"/>Next <span class="fa fa-arrow-circle-right"></span></a>
+
+
+ <a href="tablespaces.html" class="btn btn-neutral" title="Tablespaces"><span class="fa fa-arrow-circle-left"></span> Previous</a>
+
+ </div>
+
+
+ <hr/>
+
+ <div role="contentinfo">
+ <p>
+ © Copyright 2016, Apache Tajo Team.
+ </p>
+ </div>
+
+ <a href="https://github.com/snide/sphinx_rtd_theme">Sphinx theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>
+</footer>
+ </div>
+ </div>
+
+ </section>
+
+ </div>
+
+
+
+
+
+ <script type="text/javascript">
+ var DOCUMENTATION_OPTIONS = {
+ URL_ROOT:'../',
+ VERSION:'0.11.3',
+ COLLAPSE_INDEX:false,
+ FILE_SUFFIX:'.html',
+ HAS_SOURCE: true
+ };
+ </script>
+ <script type="text/javascript" src="../_static/jquery.js"></script>
+ <script type="text/javascript" src="../_static/underscore.js"></script>
+ <script type="text/javascript" src="../_static/doctools.js"></script>
+
+
+
+
+
+ <script type="text/javascript" src="../_static/js/theme.js"></script>
+
+
+
+
+ <script type="text/javascript">
+ jQuery(function () {
+ SphinxRtdTheme.StickyNav.enable();
+ });
+ </script>
+
+
+</body>
+</html>
\ No newline at end of file
Added: tajo/site/docs/0.11.3/table_management/json.html
URL: http://svn.apache.org/viewvc/tajo/site/docs/0.11.3/table_management/json.html?rev=1744489&view=auto
==============================================================================
--- tajo/site/docs/0.11.3/table_management/json.html (added)
+++ tajo/site/docs/0.11.3/table_management/json.html Thu May 19 02:00:25 2016
@@ -0,0 +1,365 @@
+
+
+<!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>JSON — Apache Tajo 0.11.3 documentation</title>
+
+
+
+
+
+
+ <link href='https://fonts.googleapis.com/css?family=Lato:400,700|Roboto+Slab:400,700|Inconsolata:400,700' rel='stylesheet' type='text/css'>
+
+
+
+
+
+
+
+
+
+ <link rel="stylesheet" href="../_static/css/theme.css" type="text/css" />
+
+
+
+ <link rel="top" title="Apache Tajo 0.11.3 documentation" href="../index.html"/>
+ <link rel="up" title="Data Formats" href="data_formats.html"/>
+ <link rel="next" title="RCFile" href="rcfile.html"/>
+ <link rel="prev" title="TEXT" href="text.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">
+
+
+ <nav data-toggle="wy-nav-shift" class="wy-nav-side">
+ <div class="wy-side-nav-search">
+ <a href="../index.html" class="fa fa-home"> Apache Tajo</a>
+ <div role="search">
+ <form id ="rtd-search-form" class="wy-form" action="../search.html" method="get">
+ <input type="text" name="q" placeholder="Search docs" />
+ <input type="hidden" name="check_keywords" value="yes" />
+ <input type="hidden" name="area" value="default" />
+ </form>
+</div>
+ </div>
+
+ <div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="main navigation">
+
+
+ <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"><a class="reference internal" href="../configuration.html">Configuration</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="../configuration/preliminary.html">Preliminary</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../configuration/cluster_setup.html">Cluster Setup</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../configuration/tajo_master_configuration.html">Tajo Master Configuration</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../configuration/worker_configuration.html">Worker Configuration</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../configuration/catalog_configuration.html">Catalog Configuration</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../configuration/ha_configuration.html">High Availability for TajoMaster</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../configuration/service_config_defaults.html">Cluster Service Configuration Defaults</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../configuration/tajo-site-xml.html">The tajo-site.xml File</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../configuration/catalog-site-xml.html">The catalog-site.xml File</a></li>
+<li class="toctree-l2"><a class="reference internal" href="../configuration/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 current"><a class="reference internal" href="../table_management.html">Table Management</a><ul class="current">
+<li class="toctree-l2"><a class="reference internal" href="table_overview.html">Overview of Tajo Tables</a></li>
+<li class="toctree-l2"><a class="reference internal" href="tablespaces.html">Tablespaces</a></li>
+<li class="toctree-l2 current"><a class="reference internal" href="data_formats.html">Data Formats</a></li>
+<li class="toctree-l2"><a class="reference internal" href="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">
+
+
+ <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>
+
+
+
+ <div class="wy-nav-content">
+ <div class="rst-content">
+ <div role="navigation" aria-label="breadcrumbs navigation">
+ <ul class="wy-breadcrumbs">
+ <li><a href="../index.html">Docs</a> »</li>
+
+ <li><a href="../table_management.html">Table Management</a> »</li>
+
+ <li><a href="data_formats.html">Data Formats</a> »</li>
+
+ <li>JSON</li>
+ <li class="wy-breadcrumbs-aside">
+
+ <a href="../_sources/table_management/json.txt" rel="nofollow"> View page source</a>
+
+ </li>
+ </ul>
+ <hr/>
+</div>
+ <div role="main">
+
+ <div class="section" id="json">
+<h1>JSON<a class="headerlink" href="#json" title="Permalink to this headline">¶</a></h1>
+<p>JSON(JavaScript Object Notation) is an open standard format for data (de)serialization. Since it is simple and human-readable, it is popularly used in many fields.
+Tajo supports JSON as its data format. In this section, you will get an overview of how to create JSON tables and query on them.</p>
+<div class="section" id="how-to-create-a-json-table">
+<h2>How to Create a JSON Table ?<a class="headerlink" href="#how-to-create-a-json-table" title="Permalink to this headline">¶</a></h2>
+<p>You can create a JSON table using the <tt class="docutils literal"><span class="pre">CREATE</span> <span class="pre">TABLE</span></tt> statement. (For more information, please refer to <a class="reference internal" href="../sql_language/ddl.html"><em>Data Definition Language</em></a>.)
+For example, please consider an example data as follows:</p>
+<div class="highlight-bash"><div class="highlight"><pre><span class="nv">$ </span>hdfs dfs -cat /table1/table.json
+<span class="o">{</span> <span class="s2">"title"</span> : <span class="s2">"Hand of the King"</span>, <span class="s2">"name"</span> : <span class="o">{</span> <span class="s2">"first_name"</span>: <span class="s2">"Eddard"</span>, <span class="s2">"last_name"</span>: <span class="s2">"Stark"</span><span class="o">}}</span>
+<span class="o">{</span> <span class="s2">"title"</span> : <span class="s2">"Assassin"</span>, <span class="s2">"name"</span> : <span class="o">{</span> <span class="s2">"first_name"</span>: <span class="s2">"Arya"</span>, <span class="s2">"last_name"</span>: <span class="s2">"Stark"</span><span class="o">}}</span>
+<span class="o">{</span> <span class="s2">"title"</span> : <span class="s2">"Dancing Master"</span>, <span class="s2">"name"</span> : <span class="o">{</span> <span class="s2">"first_name"</span>: <span class="s2">"Syrio"</span>, <span class="s2">"last_name"</span>: <span class="s2">"Forel"</span><span class="o">}}</span>
+</pre></div>
+</div>
+<p>Tajo provides two ways to create a table for this data. First is a traditional way to create tables. Here is an example.</p>
+<div class="highlight-sql"><div class="highlight"><pre><span class="k">CREATE</span> <span class="k">EXTERNAL</span> <span class="k">TABLE</span> <span class="n">table1</span> <span class="p">(</span>
+ <span class="n">title</span> <span class="nb">TEXT</span><span class="p">,</span>
+ <span class="n">name</span> <span class="n">RECORD</span> <span class="p">(</span>
+ <span class="n">first_name</span> <span class="nb">TEXT</span><span class="p">,</span>
+ <span class="n">last_name</span> <span class="nb">TEXT</span>
+ <span class="p">)</span>
+<span class="p">)</span> <span class="k">USING</span> <span class="n">JSON</span> <span class="k">LOCATION</span> <span class="s1">'/table1/table.json'</span><span class="p">;</span>
+</pre></div>
+</div>
+<p>With this way, you need to specify every column which they want to use. This will be a tedious work, and not appropriate for flexible JSON schema.
+Second is a simpler alternative to alleviate this problem. When you create an external table of JSON format, you can simply omit the column specification as follows:</p>
+<div class="highlight-sql"><div class="highlight"><pre><span class="k">CREATE</span> <span class="k">EXTERNAL</span> <span class="k">TABLE</span> <span class="n">table1</span> <span class="p">(</span><span class="o">*</span><span class="p">)</span> <span class="k">USING</span> <span class="n">JSON</span> <span class="k">LOCATION</span> <span class="s1">'/table1/table.json'</span><span class="p">;</span>
+</pre></div>
+</div>
+<p>No matter which way you choose, you can submit any queries on this table.</p>
+<div class="highlight-sql"><div class="highlight"><pre><span class="o">></span> <span class="k">SELECT</span> <span class="n">title</span><span class="p">,</span> <span class="n">name</span><span class="p">.</span><span class="n">last_name</span> <span class="k">from</span> <span class="n">table1</span> <span class="k">where</span> <span class="n">name</span><span class="p">.</span><span class="n">first_name</span> <span class="o">=</span> <span class="s1">'Arya'</span><span class="p">;</span>
+<span class="n">title</span><span class="p">,</span><span class="n">name</span><span class="o">/</span><span class="n">last_name</span>
+<span class="c1">-------------------------------</span>
+<span class="n">Assassin</span><span class="p">,</span><span class="n">Stark</span>
+</pre></div>
+</div>
+<div class="admonition warning">
+<p class="first admonition-title">Warning</p>
+<p class="last">If you create a table with the second way, every column is assumed as the <tt class="docutils literal"><span class="pre">TEXT</span></tt> type.
+So, you need to perform type casting if you want to handle them as other types.</p>
+</div>
+</div>
+<div class="section" id="physical-properties">
+<h2>Physical Properties<a class="headerlink" href="#physical-properties" title="Permalink to this headline">¶</a></h2>
+<p>Some table storage formats provide parameters for enabling or disabling features and adjusting physical parameters.
+The <tt class="docutils literal"><span class="pre">WITH</span></tt> clause in the CREATE TABLE statement allows users to set those parameters.</p>
+<p>The JSON format provides the following physical properties.</p>
+<ul class="simple">
+<li><tt class="docutils literal"><span class="pre">text.delimiter</span></tt>: delimiter character. <tt class="docutils literal"><span class="pre">|</span></tt> or <tt class="docutils literal"><span class="pre">\u0001</span></tt> is usually used, and the default field delimiter is <tt class="docutils literal"><span class="pre">|</span></tt>.</li>
+<li><tt class="docutils literal"><span class="pre">text.null</span></tt>: <tt class="docutils literal"><span class="pre">NULL</span></tt> character. The default <tt class="docutils literal"><span class="pre">NULL</span></tt> character is an empty string <tt class="docutils literal"><span class="pre">''</span></tt>. Hive’s default <tt class="docutils literal"><span class="pre">NULL</span></tt> character is <tt class="docutils literal"><span class="pre">'\\N'</span></tt>.</li>
+<li><tt class="docutils literal"><span class="pre">compression.codec</span></tt>: Compression codec. You can enable compression feature and set specified compression algorithm. The compression algorithm used to compress files. The compression codec name should be the fully qualified class name inherited from <a class="reference external" href="https://hadoop.apache.org/docs/current/api/org/apache/hadoop/io/compress/CompressionCodec.html">org.apache.hadoop.io.compress.CompressionCodec</a>. By default, compression is disabled.</li>
+<li><tt class="docutils literal"><span class="pre">timezone</span></tt>: the time zone that the table uses for writting. When table rows are read or written, <tt class="docutils literal"><span class="pre">`timestamp`</span></tt> and <tt class="docutils literal"><span class="pre">`time`</span></tt> column values are adjusted by this timezone if it is set. Time zone can be an abbreviation form like ‘PST’ or ‘DST’. Also, it accepts an offset-based form like ‘UTC+9’ or a location-based form like ‘Asia/Seoul’.</li>
+<li><tt class="docutils literal"><span class="pre">text.error-tolerance.max-num</span></tt>: the maximum number of permissible parsing errors. This value should be an integer value. By default, <tt class="docutils literal"><span class="pre">text.error-tolerance.max-num</span></tt> is <tt class="docutils literal"><span class="pre">0</span></tt>. According to the value, parsing errors will be handled in different ways.<ul>
+<li>If <tt class="docutils literal"><span class="pre">text.error-tolerance.max-num</span> <span class="pre"><</span> <span class="pre">0</span></tt>, all parsing errors are ignored.</li>
+<li>If <tt class="docutils literal"><span class="pre">text.error-tolerance.max-num</span> <span class="pre">==</span> <span class="pre">0</span></tt>, any parsing error is not allowed. If any error occurs, the query will be failed. (default)</li>
+<li>If <tt class="docutils literal"><span class="pre">text.error-tolerance.max-num</span> <span class="pre">></span> <span class="pre">0</span></tt>, the given number of parsing errors in each task will be pemissible.</li>
+</ul>
+</li>
+<li><tt class="docutils literal"><span class="pre">text.skip.headerlines</span></tt>: Number of header lines to be skipped. Some text files often have a header which has a kind of metadata(e.g.: column names), thus this option can be useful.</li>
+</ul>
+<p>The following example is to set a custom field delimiter, <tt class="docutils literal"><span class="pre">NULL</span></tt> character, and compression codec:</p>
+<div class="highlight-sql"><div class="highlight"><pre><span class="k">CREATE</span> <span class="k">TABLE</span> <span class="n">table1</span> <span class="p">(</span>
+ <span class="n">id</span> <span class="nb">int</span><span class="p">,</span>
+ <span class="n">name</span> <span class="nb">text</span><span class="p">,</span>
+ <span class="n">score</span> <span class="nb">float</span><span class="p">,</span>
+ <span class="k">type</span> <span class="nb">text</span>
+<span class="p">)</span> <span class="k">USING</span> <span class="n">JSON</span> <span class="k">WITH</span><span class="p">(</span><span class="s1">'text.delimiter'</span><span class="o">=</span><span class="s1">'\u0001'</span><span class="p">,</span>
+ <span class="s1">'text.null'</span><span class="o">=</span><span class="s1">'\\N'</span><span class="p">,</span>
+ <span class="s1">'compression.codec'</span><span class="o">=</span><span class="s1">'org.apache.hadoop.io.compress.SnappyCodec'</span><span class="p">);</span>
+</pre></div>
+</div>
+<div class="admonition warning">
+<p class="first admonition-title">Warning</p>
+<p class="last">Be careful when using <tt class="docutils literal"><span class="pre">\n</span></tt> as the field delimiter because <em>TEXT</em> format tables use <tt class="docutils literal"><span class="pre">\n</span></tt> as the line delimiter.
+At the moment, Tajo does not provide a way to specify the line delimiter.</p>
+</div>
+</div>
+<div class="section" id="null-value-handling-issues">
+<h2>Null Value Handling Issues<a class="headerlink" href="#null-value-handling-issues" title="Permalink to this headline">¶</a></h2>
+<p>In default, <tt class="docutils literal"><span class="pre">NULL</span></tt> character in <em>TEXT</em> format is an empty string <tt class="docutils literal"><span class="pre">''</span></tt>.
+In other words, an empty field is basically recognized as a <tt class="docutils literal"><span class="pre">NULL</span></tt> value in Tajo.
+If a field domain is <tt class="docutils literal"><span class="pre">TEXT</span></tt>, an empty field is recognized as a string value <tt class="docutils literal"><span class="pre">''</span></tt> instead of <tt class="docutils literal"><span class="pre">NULL</span></tt> value.
+Besides, You can also use your own <tt class="docutils literal"><span class="pre">NULL</span></tt> character by specifying a physical property <tt class="docutils literal"><span class="pre">text.null</span></tt>.</p>
+</div>
+</div>
+
+
+ </div>
+ <footer>
+
+ <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation">
+
+ <a href="rcfile.html" class="btn btn-neutral float-right" title="RCFile"/>Next <span class="fa fa-arrow-circle-right"></span></a>
+
+
+ <a href="text.html" class="btn btn-neutral" title="TEXT"><span class="fa fa-arrow-circle-left"></span> Previous</a>
+
+ </div>
+
+
+ <hr/>
+
+ <div role="contentinfo">
+ <p>
+ © Copyright 2016, Apache Tajo Team.
+ </p>
+ </div>
+
+ <a href="https://github.com/snide/sphinx_rtd_theme">Sphinx theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>
+</footer>
+ </div>
+ </div>
+
+ </section>
+
+ </div>
+
+
+
+
+
+ <script type="text/javascript">
+ var DOCUMENTATION_OPTIONS = {
+ URL_ROOT:'../',
+ VERSION:'0.11.3',
+ COLLAPSE_INDEX:false,
+ FILE_SUFFIX:'.html',
+ HAS_SOURCE: true
+ };
+ </script>
+ <script type="text/javascript" src="../_static/jquery.js"></script>
+ <script type="text/javascript" src="../_static/underscore.js"></script>
+ <script type="text/javascript" src="../_static/doctools.js"></script>
+
+
+
+
+
+ <script type="text/javascript" src="../_static/js/theme.js"></script>
+
+
+
+
+ <script type="text/javascript">
+ jQuery(function () {
+ SphinxRtdTheme.StickyNav.enable();
+ });
+ </script>
+
+
+</body>
+</html>
\ No newline at end of file