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http://git-wip-us.apache.org/repos/asf/drill-site/blob/c4de0f83/docs/hive-storage-plugin/index.html
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+ <li class="toctree-l3"><a class="reference internal" href="/docs/workspaces/">Workspaces</a></li>
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+ <li class="toctree-l3"><a class="reference internal" href="/docs/file-system-storage-plugin/">File System Storage Plugin</a></li>
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+ <li class="toctree-l3 current"><a class="reference internal" href="/docs/hive-storage-plugin/">Hive Storage Plugin</a></li>
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+ <li class="toctree-l3"><a class="reference internal" href="/docs/drill-default-input-format/">Drill Default Input Format</a></li>
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+ </ul>
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+ <li class="toctree-l2"><a class="reference internal" href="/docs/mongodb-plugin-for-apache-drill/">MongoDB Plugin for Apache Drill</a></li>
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+ <li class="toctree-l1"><a href="javascript: void(0);">Query Data</a></li>
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+ <li class="toctree-l2"><a href="javascript: void(0);">Querying a File System</a></li>
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+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/querying-parquet-files/">Querying Parquet Files</a></li>
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+ <li class="toctree-l3"><a class="reference internal" href="/docs/querying-plain-text-files/">Querying Plain Text Files</a></li>
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+ <li class="toctree-l3"><a class="reference internal" href="/docs/querying-directories/">Querying Directories</a></li>
+
+ </ul>
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+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/querying-hbase/">Querying HBase</a></li>
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+ <li class="toctree-l2"><a href="javascript: void(0);">Querying Complex Data</a></li>
+ <ul style="display: none">
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+ <li class="toctree-l3"><a class="reference internal" href="/docs/querying-complex-data-introduction/">Querying Complex Data Introduction</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/sample-data-donuts/">Sample Data: Donuts</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/selecting-flat-data/">Selecting Flat Data</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/using-sql-functions-clauses-and-joins/">Using SQL Functions, Clauses, and Joins</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/selecting-nested-data-for-a-column/">Selecting Nested Data for a Column</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/selecting-multiple-columns-within-nested-data/">Selecting Multiple Columns Within Nested Data</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/querying-hive/">Querying Hive</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/querying-the-information-schema/">Querying the INFORMATION SCHEMA</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/querying-system-tables/">Querying System Tables</a></li>
+
+
+ </ul>
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+ <li class="toctree-l1"><a href="javascript: void(0);">SQL Reference</a></li>
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+ <li class="toctree-l2"><a href="javascript: void(0);">Data Types</a></li>
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+ <li class="toctree-l3"><a class="reference internal" href="/docs/supported-data-types/">Supported Data Types</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/date-time-and-timestamp/">Date, Time, and Timestamp</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/handling-different-data-types/">Handling Different Data Types</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/lexical-structure/">Lexical Structure</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/operators/">Operators</a></li>
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+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">SQL Functions</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/about-sql-function-examples/">About SQL Function Examples</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/math-and-trig/">Math and Trig</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/data-type-conversion/">Data Type Conversion</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/date-time-functions-and-arithmetic/">Date/Time Functions and Arithmetic</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/string-manipulation/">String Manipulation</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/aggregate-and-aggregate-statistical/">Aggregate and Aggregate Statistical</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/functions-for-handling-nulls/">Functions for Handling Nulls</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Nested Data Functions</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/nested-data-limitations/">Nested Data Limitations</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/flatten/">FLATTEN</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/kvgen/">KVGEN</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/repeated-count/">REPEATED_COUNT</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/repeated-contains/">REPEATED_CONTAINS</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/query-directory-functions/">Query Directory Functions</a></li>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">SQL Commands</a></li>
+ <ul style="display: none">
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+ <li class="toctree-l3"><a class="reference internal" href="/docs/supported-sql-commands/">Supported SQL Commands</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/alter-session-command/">ALTER SESSION Command</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/alter-system-command/">ALTER SYSTEM Command</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/create-table-as-ctas-command/">CREATE TABLE AS (CTAS) command</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/create-view-command/">CREATE VIEW command</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/describe-command/">DESCRIBE Command</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/explain-commands/">EXPLAIN commands</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select-statements/">SELECT Statements</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/show-databases-and-show-schemas-command/">SHOW DATABASES AND SHOW SCHEMAS Command</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/show-files-command/">SHOW FILES Command</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/show-tables-command/">SHOW TABLES Command</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/use-command/">USE Command</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">SQL Conditional Expressions</a></li>
+ <ul style="display: none">
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+ <li class="toctree-l3"><a class="reference internal" href="/docs/case/">CASE</a></li>
+
+ </ul>
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+ <li class="toctree-l2"><a class="reference internal" href="/docs/reserved-keywords/">Reserved Keywords</a></li>
+
+
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+ <li class="toctree-l2"><a class="reference internal" href="/docs/sql-extensions/">SQL Extensions</a></li>
+
+
+ </ul>
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+ <li class="toctree-l1"><a href="javascript: void(0);">Data Sources and File Formats</a></li>
+ <ul style="display: none">
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+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/data-sources-and-file-formats-introduction/">Data Sources and File Formats Introduction</a></li>
+
+
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+ <li class="toctree-l2"><a class="reference internal" href="/docs/hive-to-drill-data-type-mapping/">Hive-to-Drill Data Type Mapping</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/deploying-and-using-a-hive-udf/">Deploying and Using a Hive UDF</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/parquet-format/">Parquet Format</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/json-data-model/">JSON Data Model</a></li>
+
+
+ </ul>
+
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+
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+
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+
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+
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+
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+ <a class="edit-link" href="https://github.com/apache/drill/blob/gh-pages/_docs/connect-a-data-source/070-hive-storage-plugin.md" target="_blank"><i class="fa fa-pencil-square-o"></i></a>
+
+
+ <div class="int_title">
+ <h1>Hive Storage Plugin</h1>
+
+ </div>
+
+ <link href="/css/docpage.css" rel="stylesheet" type="text/css">
+
+ <div class="int_text" align="left">
+
+ <p>You can register a storage plugin instance that connects Drill to a Hive data
+source that has a remote or embedded metastore service. When you register a
+storage plugin instance for a Hive data source, provide a unique name for the
+instance, and identify the type as “<code>hive</code>”. You must also provide the
+metastore connection information.</p>
+
+<p>Drill supports Hive 0.13. To access Hive tables
+using custom SerDes or InputFormat/OutputFormat, all nodes running Drillbits
+must have the SerDes or InputFormat/OutputFormat <code>JAR</code> files in the
+<code><drill_installation_directory>/jars/3rdparty</code> folder.</p>
+
+<h2 id="hive-remote-metastore">Hive Remote Metastore</h2>
+
+<p>In this configuration, the Hive metastore runs as a separate service outside
+of Hive. Drill communicates with the Hive metastore through Thrift. The
+metastore service communicates with the Hive database over JDBC. Point Drill
+to the Hive metastore service address, and provide the connection parameters
+in the Drill Web UI to configure a connection to Drill.</p>
+
+<div class="admonition note">
+ <p class="first admonition-title">Note</p>
+ <p class="last">Verify that the Hive metastore service is running before you register the Hive metastore. </p>
+</div>
+
+<p>To register a remote Hive metastore with Drill, complete the following steps:</p>
+
+<ol>
+<li><p>Issue the following command to start the Hive metastore service on the system specified in the <code>hive.metastore.uris</code>:</p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">hive --service metastore
+</code></pre></div></li>
+<li><p>Navigate to <a href="http://localhost:8047/">http://localhost:8047</a>, and select the <strong>Storage</strong> tab.</p></li>
+<li><p>In the disabled storage plugins section, click <strong>Update</strong> next to the <code>hive</code> instance.</p></li>
+<li><p>In the configuration window, add the <code>Thrift URI</code> and port to <code>hive.metastore.uris</code>.</p>
+
+<p><strong>Example</strong></p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">{
+ "type": "hive",
+ "enabled": true,
+ "configProps": {
+ "hive.metastore.uris": "thrift://<localhost>:<port>",
+ "hive.metastore.sasl.enabled": "false"
+ }
+}
+</code></pre></div></li>
+<li><p>Click <strong>Enable</strong>.</p></li>
+<li><p>Verify that <code>HADOOP_CLASSPATH</code> is set in <code>drill-env.sh</code>. If you need to set the classpath, add the following line to <code>drill-env.sh</code>.</p></li>
+</ol>
+
+<p>Once you have configured a storage plugin instance for a Hive data source, you
+can <a href="/docs/querying-hive/">query Hive tables</a>.</p>
+
+<h2 id="hive-embedded-metastore">Hive Embedded Metastore</h2>
+
+<p>In this configuration, the Hive metastore is embedded within the Drill process. Provide the metastore database configuration settings in the Drill Web UI. Before you register Hive, verify that the driver you use to connect to the Hive metastore is in the Drill classpath located in <code>/<drill installation dirctory>/lib/.</code> If the driver is not there, copy the driver to <code>/<drill
+installation directory>/lib</code> on the Drill node. For more information about storage types and configurations, refer to <a href="https://cwiki.apache.org/confluence/display/Hive/AdminManual+MetastoreAdmin">"Hive Metastore Administration"</a>.</p>
+
+<p>To register an embedded Hive metastore with Drill, complete the following
+steps:</p>
+
+<ol>
+<li>Navigate to <code>[http://localhost:8047](http://localhost:8047/)</code>, and select the <strong>Storage</strong> tab</li>
+<li>In the disabled storage plugins section, click <strong>Update</strong> next to <code>hive</code> instance.</li>
+<li><p>In the configuration window, add the database configuration settings.</p>
+
+<p><strong>Example</strong></p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">{
+ "type": "hive",
+ "enabled": true,
+ "configProps": {
+ "javax.jdo.option.ConnectionURL": "jdbc:<database>://<host:port>/<metastore database>;create=true",
+ "hive.metastore.warehouse.dir": "/tmp/drill_hive_wh",
+ "fs.default.name": "file:///",
+ }
+}
+</code></pre></div></li>
+<li><p>Click <strong>Enable</strong>.</p></li>
+<li><p>Verify that <code>HADOOP_CLASSPATH</code> is set in <code>drill-env.sh</code>. If you need to set the classpath, add the following line to <code>drill-env.sh</code>.</p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">export HADOOP_CLASSPATH=/<directory path>/hadoop/hadoop-<version-number>
+</code></pre></div></li>
+</ol>
+
+
+
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+
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+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/summary/">Summary</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/analyzing-highly-dynamic-datasets/">Analyzing Highly Dynamic Datasets</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Install Drill</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/install-drill-introduction/">Install Drill Introduction</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/deploying-drill-in-a-cluster/">Deploying Drill in a Cluster</a></li>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Installing Drill in Embedded Mode</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/embedded-mode-prerequisites/">Embedded Mode Prerequisites</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/installing-drill-on-linux/">Installing Drill on Linux</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/installing-drill-on-mac-os-x/">Installing Drill on Mac OS X</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/installing-drill-on-windows/">Installing Drill on Windows</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/installing-drill-in-distributed-mode/">Installing Drill in Distributed Mode</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Connect a Data Source</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/connect-a-data-source-introduction/">Connect a Data Source Introduction</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/storage-plugin-registration/">Storage Plugin Registration</a></li>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Storage Plugin Configuration</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/plugin-configuration-introduction/">Plugin Configuration Introduction</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/workspaces/">Workspaces</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/file-system-storage-plugin/">File System Storage Plugin</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/hbase-storage-plugin/">HBase Storage Plugin</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/hive-storage-plugin/">Hive Storage Plugin</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/drill-default-input-format/">Drill Default Input Format</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/mongodb-plugin-for-apache-drill/">MongoDB Plugin for Apache Drill</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/mapr-db-format/">MapR-DB Format</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">ODBC/JDBC Interfaces</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/interfaces-introduction/">Interfaces Introduction</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/using-jdbc/">Using JDBC</a></li>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Using ODBC on Linux and Mac OS X</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/odbc-on-linux-and-mac-introduction/">ODBC on Linux and Mac Introduction</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/installing-the-driver-on-linux/">Installing the Driver on Linux</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/installing-the-driver-on-mac-os-x/">Installing the Driver on Mac OS X</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-connections-on-linux-and-mac-os-x/">Configuring Connections on Linux and Mac OS X</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/driver-configuration-options/">Driver Configuration Options</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/using-a-connection-string/">Using a Connection String</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/advanced-properties/">Advanced Properties</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/testing-the-odbc-connection/">Testing the ODBC Connection</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Using ODBC on Windows</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/installing-the-driver-on-windows/">Installing the Driver on Windows</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-connections-on-windows/">Configuring Connections on Windows</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/connecting-to-odbc-data-sources/">Connecting to ODBC Data Sources</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/tableau-examples/">Tableau Examples</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/using-drill-explorer-on-windows/">Using Drill Explorer on Windows</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/using-microstrategy-analytics-with-drill/">Using MicroStrategy Analytics with Drill</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Query Data</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/query-data-introduction/">Query Data Introduction</a></li>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Querying a File System</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/querying-a-file-system-introduction/">Querying a File System Introduction</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/querying-json-files/">Querying JSON Files</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/querying-parquet-files/">Querying Parquet Files</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/querying-plain-text-files/">Querying Plain Text Files</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/querying-directories/">Querying Directories</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/querying-hbase/">Querying HBase</a></li>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Querying Complex Data</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/querying-complex-data-introduction/">Querying Complex Data Introduction</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/sample-data-donuts/">Sample Data: Donuts</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/selecting-flat-data/">Selecting Flat Data</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/using-sql-functions-clauses-and-joins/">Using SQL Functions, Clauses, and Joins</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/selecting-nested-data-for-a-column/">Selecting Nested Data for a Column</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/selecting-multiple-columns-within-nested-data/">Selecting Multiple Columns Within Nested Data</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/querying-hive/">Querying Hive</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/querying-the-information-schema/">Querying the INFORMATION SCHEMA</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/querying-system-tables/">Querying System Tables</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">SQL Reference</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/sql-reference-introduction/">SQL Reference Introduction</a></li>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Data Types</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/supported-data-types/">Supported Data Types</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/date-time-and-timestamp/">Date, Time, and Timestamp</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/handling-different-data-types/">Handling Different Data Types</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/lexical-structure/">Lexical Structure</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/operators/">Operators</a></li>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">SQL Functions</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/about-sql-function-examples/">About SQL Function Examples</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/math-and-trig/">Math and Trig</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/data-type-conversion/">Data Type Conversion</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/date-time-functions-and-arithmetic/">Date/Time Functions and Arithmetic</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/string-manipulation/">String Manipulation</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/aggregate-and-aggregate-statistical/">Aggregate and Aggregate Statistical</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/functions-for-handling-nulls/">Functions for Handling Nulls</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Nested Data Functions</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/nested-data-limitations/">Nested Data Limitations</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/flatten/">FLATTEN</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/kvgen/">KVGEN</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/repeated-count/">REPEATED_COUNT</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/repeated-contains/">REPEATED_CONTAINS</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/query-directory-functions/">Query Directory Functions</a></li>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">SQL Commands</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/supported-sql-commands/">Supported SQL Commands</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/alter-session-command/">ALTER SESSION Command</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/alter-system-command/">ALTER SYSTEM Command</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/create-table-as-ctas-command/">CREATE TABLE AS (CTAS) command</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/create-view-command/">CREATE VIEW command</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/describe-command/">DESCRIBE Command</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/explain-commands/">EXPLAIN commands</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/select-statements/">SELECT Statements</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/show-databases-and-show-schemas-command/">SHOW DATABASES AND SHOW SCHEMAS Command</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/show-files-command/">SHOW FILES Command</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/show-tables-command/">SHOW TABLES Command</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/use-command/">USE Command</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">SQL Conditional Expressions</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/case/">CASE</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/reserved-keywords/">Reserved Keywords</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/sql-extensions/">SQL Extensions</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1 current_section "><a href="javascript: void(0);">Data Sources and File Formats</a></li>
+ <ul class="current_section">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/data-sources-and-file-formats-introduction/">Data Sources and File Formats Introduction</a></li>
+
+
+
+ <li class="toctree-l2 current"><a class="reference internal" href="/docs/hive-to-drill-data-type-mapping/">Hive-to-Drill Data Type Mapping</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/deploying-and-using-a-hive-udf/">Deploying and Using a Hive UDF</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/parquet-format/">Parquet Format</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/json-data-model/">JSON Data Model</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Develop Custom Functions</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/develop-custom-functions-introduction/">Develop Custom Functions Introduction</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/develop-a-simple-function/">Develop a Simple Function</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/developing-an-aggregate-function/">Developing an Aggregate Function</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/adding-custom-functions-to-drill/">Adding Custom Functions to Drill</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/using-custom-functions-in-queries/">Using Custom Functions in Queries</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/custom-function-interfaces/">Custom Function Interfaces</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Manage Drill</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/manage-drill-introduction/">Manage Drill Introduction</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-drill-in-a-dedicated-cluster/">Configuring Drill in a Dedicated Cluster</a></li>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Configuring a Multitenant Cluster</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-a-multitenant-cluster-introduction/">Configuring a Multitenant Cluster Introduction</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-multitenant-resources/">Configuring Multitenant Resources</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-resources-for-a-shared-drillbit/">Configuring Resources for a Shared Drillbit</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Configuration Options</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/configuration-options-introduction/">Configuration Options Introduction</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/start-up-options/">Start-Up Options</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/planning-and-execution-options/">Planning and Execution Options</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/persistent-configuration-storage/">Persistent Configuration Storage</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/starting-stopping-drill/">Starting/Stopping Drill</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/ports-used-by-drill/">Ports Used by Drill</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/partition-pruning/">Partition Pruning</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/monitoring-and-canceling-queries-in-the-drill-web-ui/">Monitoring and Canceling Queries in the Drill Web UI</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Developer Information</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Develop Drill</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/compiling-drill-from-source/">Compiling Drill from Source</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/drill-patch-review-tool/">Drill Patch Review Tool</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Contribute to Drill</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/apache-drill-contribution-guidelines/">Apache Drill Contribution Guidelines</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/apache-drill-contribution-ideas/">Apache Drill Contribution Ideas</a></li>
+
+ </ul>
+
+
+
+ <li class="toctree-l2"><a href="javascript: void(0);">Design Docs</a></li>
+ <ul style="display: none">
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/drill-plan-syntax/">Drill Plan Syntax</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/rpc-overview/">RPC Overview</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/query-stages/">Query Stages</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/useful-research/">Useful Research</a></li>
+
+ <li class="toctree-l3"><a class="reference internal" href="/docs/value-vectors/">Value Vectors</a></li>
+
+ </ul>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Release Notes</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-0-5-0-release-notes/">Apache Drill 0.5.0 Release Notes</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-0-4-0-release-notes/">Apache Drill 0.4.0 Release Notes</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-m1-release-notes-apache-drill-alpha/">Apache Drill M1 Release Notes (Apache Drill Alpha)</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-m1-release-notes-apache-drill-alpha/">Apache Drill M1 Release Notes (Apache Drill Alpha)</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-0-6-0-release-notes/">Apache Drill 0.6.0 Release Notes</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-0-7-0-release-notes/">Apache Drill 0.7.0 Release Notes</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-0-8-0-release-notes/">Apache Drill 0.8.0 Release Notes</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Sample Datasets</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/aol-search/">AOL Search</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/enron-emails/">Enron Emails</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/wikipedia-edit-history/">Wikipedia Edit History</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Archived Pages</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/how-to-run-the-drill-demo/">How to Run the Drill Demo</a></li>
+
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/what-is-apache-drill/">What is Apache Drill</a></li>
+
+
+ </ul>
+
+
+
+ <li class="toctree-l1"><a href="javascript: void(0);">Progress Reports</a></li>
+ <ul style="display: none">
+
+
+ <li class="toctree-l2"><a class="reference internal" href="/docs/2014-q1-drill-report/">2014 Q1 Drill Report</a></li>
+
+
+ </ul>
+
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+ <a class="edit-link" href="https://github.com/apache/drill/blob/gh-pages/_docs/data-sources-and-file-formats/020-hive-to-drill-data-type-mapping.md" target="_blank"><i class="fa fa-pencil-square-o"></i></a>
+
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+ <div class="int_title">
+ <h1>Hive-to-Drill Data Type Mapping</h1>
+
+ </div>
+
+ <link href="/css/docpage.css" rel="stylesheet" type="text/css">
+
+ <div class="int_text" align="left">
+
+ <p>Using Drill you can read tables created in Hive that use data types compatible with Drill. Drill currently does not support writing Hive tables. Drill supports the following Hive types for querying:</p>
+
+<!-- See DRILL-1570 -->
+
+<table>
+ <tr>
+ <th>Supported SQL Type</th>
+ <th>Hive Type</th>
+ <th>Description</th>
+ </tr>
+ <tr>
+ <td>BIGINT</td>
+ <td>BIGINT</td>
+ <td>8-byte signed integer</td>
+ </tr>
+ <tr>
+ <td>BOOLEAN</td>
+ <td>BOOLEAN</td>
+ <td>TRUE (1) or FALSE (0)</td>
+ </tr>
+ <tr>
+ <td>CHAR</td>
+ <td>CHAR</td>
+ <td>Character string, fixed-length max 255</td>
+ </tr>
+ <tr>
+ <td>DATE</td>
+ <td>DATE</td>
+ <td>Years months and days in the form in the form YYYY-MM-DD</td>
+ </tr>
+ <tr>
+ <td>DECIMAL</td>
+ <td>DECIMAL</td>
+ <td>38-digit precision</td>
+ </tr>
+ <tr>
+ <td>FLOAT</td>
+ <td>FLOAT</td>
+ <td>4-byte single precision floating point number</td>
+ </tr>
+ <tr>
+ <td>DOUBLE</td>
+ <td>DOUBLE</td>
+ <td>8-byte double precision floating point number</td>
+ </tr>
+ <tr>
+ <td>INT or INTEGER</td>
+ <td>INT</td>
+ <td>4-byte signed integer</td>
+ </tr>
+ <tr>
+ <td>INTERVALDAY</td>
+ <td>N/A</td>
+ <td>Integer fields representing a day</td>
+ </tr>
+ <tr>
+ <td>INTERVALYEAR</td>
+ <td>N/A</td>
+ <td>Integer fields representing a year</td>
+ </tr>
+ <tr>
+ <td>SMALLINT</td>
+ <td>SMALLINT</td>
+ <td>2-byte signed integer</td>
+ </tr>
+ <tr>
+ <td>TIME</td>
+ <td>N/A</td>
+ <td>Hours minutes seconds 24-hour basis</td>
+ </tr>
+ <tr>
+ <td>N/A</td>
+ <td>TIMESTAMP</td>
+ <td>Conventional UNIX Epoch timestamp.</td>
+ </tr>
+ <tr>
+ <td>TIMESTAMP</td>
+ <td>TIMESTAMP</td>
+ <td>JDBC timestamp in yyyy-mm-dd hh:mm:ss format</td>
+ </tr>
+ <tr>
+ <td>None</td>
+ <td>STRING</td>
+ <td>Binary string (16)</td>
+ </tr>
+
+ <tr>
+ <td>VARCHAR</td>
+ <td>VARCHAR</td>
+ <td>Character string variable length</td>
+ </tr>
+</table>
+
+<h2 id="unsupported-types">Unsupported Types</h2>
+
+<p>Drill does not support the following Hive types:</p>
+
+<ul>
+<li>LIST</li>
+<li>MAP</li>
+<li>STRUCT</li>
+<li>TIMESTAMP (Unix Epoch format)</li>
+<li>UNION</li>
+</ul>
+
+<p>The Hive version used in MapR supports the Hive timestamp in Unix Epoch format. Currently, the Apache Hive version used by Drill does not support this timestamp format. The workaround is to use the JDBC format for the timestamp, which Hive accepts and Drill uses, as shown in the following type mapping example. The timestamp value appears in the example CSV file in JDBC format: 2015-03-25 01:23:15. The Hive table defines column i in the CREATE EXTERNAL TABLE command as a timestamp column. The Drill extract function verifies that Drill interprets the timestamp correctly.</p>
+
+<h2 id="type-mapping-example">Type Mapping Example</h2>
+
+<p>This example demonstrates the mapping of Hive data types to Drill data types. Using a CSV that has the following contents, you create a Hive table having values of different supported types:</p>
+<div class="highlight"><pre><code class="language-text" data-lang="text"> 8223372036854775807,true,3.5,-1231.4,3.14,42,"SomeText",2015-03-25,2015-03-25 01:23:15
+</code></pre></div>
+<p>The example assumes that the CSV resides on the MapR file system (MapRFS) in the Drill sandbox: <code>/mapr/demo.mapr.com/data/</code></p>
+
+<p>In Hive, you define an external table using the following query:</p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">hive> CREATE EXTERNAL TABLE types_demo (
+ a bigint,
+ b boolean,
+ c DECIMAL(3, 2),
+ d double,
+ e float,
+ f INT,
+ g VARCHAR(64),
+ h date,
+ i timestamp
+ ) ROW FORMAT DELIMITED FIELDS TERMINATED BY ','
+ LINES TERMINATED BY '\n'
+ STORED AS TEXTFILE LOCATION '/mapr/demo.mapr.com/data/mytypes.csv';
+</code></pre></div>
+<p>You check that Hive mapped the data from the CSV to the typed values as as expected:</p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">hive> SELECT * FROM types_demo;
+OK
+8223372036854775807 true 3.5 -1231.4 3.14 42 "SomeText" 2015-03-25 2015-03-25 01:23:15
+Time taken: 0.524 seconds, Fetched: 1 row(s)
+</code></pre></div>
+<p>In Drill, you use the Hive storage plugin that has the following definition.</p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">{
+ "type": "hive",
+ "enabled": true,
+ "configProps": {
+ "hive.metastore.uris": "thrift://localhost:9083",
+ "hive.metastore.sasl.enabled": "false"
+ }
+}
+</code></pre></div>
+<p>Using the Hive storage plugin connects Drill to the Hive metastore containing the data.</p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">0: jdbc:drill:> USE hive;
++------------+------------+
+| ok | summary |
++------------+------------+
+| true | Default schema changed to 'hive' |
++------------+------------+
+1 row selected (0.067 seconds)
+</code></pre></div>
+<p>The data in the Hive table shows the expected values.</p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">0: jdbc:drill:> SELECT * FROM hive.`types_demo`;
++---------------------+------+------+---------+------+----+------------+------------+-----------+
+| a | b | c | d | e | f | g | h | i |
++---------------------+---------+---------+------+----+------------+------------+-----------+
+| 8223372036854775807 | true | 3.50 | -1231.4 | 3.14 | 42 | "SomeText" | 2015-03-25 | 2015-03-25 01:23:15.0 |
++---------------------+------+------+---------+------+----+------------+------------+-----------+
+1 row selected (1.262 seconds)
+</code></pre></div>
+<p>To validate that Drill interprets the timestamp in column i correctly, use the extract function to extract part of the date:</p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">0: jdbc:drill:> select extract(year from i) from hive.`types_demo`;
++------------+
+| EXPR$0 |
++------------+
+| 2015 |
++------------+
+1 row selected (0.387 seconds)
+</code></pre></div>
+
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