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From tshi...@apache.org
Subject [18/51] [partial] drill-site git commit: Initial commit
Date Mon, 04 May 2015 19:26:50 GMT
http://git-wip-us.apache.org/repos/asf/drill-site/blob/c4de0f83/docs/deploying-and-using-a-hive-udf/index.html
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+              
+            </ul>
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+          
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+            
+          
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+              <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>
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+                <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>
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+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/connect-a-data-source-introduction/">Connect a Data Source Introduction</a></li>
+            
+          
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+              <li class="toctree-l2"><a class="reference internal" href="/docs/storage-plugin-registration/">Storage Plugin Registration</a></li>
+            
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+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/plugin-configuration-introduction/">Plugin Configuration Introduction</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>
+              
+                <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>
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+          
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+              <li class="toctree-l2"><a class="reference internal" href="/docs/interfaces-introduction/">Interfaces Introduction</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/using-jdbc/">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>
+            
+          
+            
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+            
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+    <li><a href="/docs/data-sources-and-file-formats/">Data Sources and File Formats</a></li>
+  
+  <li>Deploying and Using a Hive UDF</li>
+</nav>
+
+  <div class="main-content-wrapper">
+    <div class="main-content">
+
+      
+        <a class="edit-link" href="https://github.com/apache/drill/blob/gh-pages/_docs/data-sources-and-file-formats/030-deploying-and-using-a-hive-udf.md" target="_blank"><i class="fa fa-pencil-square-o"></i></a>
+      
+
+      <div class="int_title">
+        <h1>Deploying and Using a Hive UDF</h1>
+
+      </div>
+
+      <link href="/css/docpage.css" rel="stylesheet" type="text/css">
+
+      <div class="int_text" align="left">
+        
+          <p>If the extensive Hive functions, such as the mathematical and date functions, which Drill supports do not meet your needs, you can use a Hive UDF in Drill queries. Drill supports your existing Hive scalar UDFs. You can do queries on Hive tables and access existing Hive input/output formats, including custom serdes. Drill serves as a complement to Hive deployments by offering low latency queries.</p>
+
+<h2 id="creating-the-udf">Creating the UDF</h2>
+
+<p>You create the JAR for a UDF to use in Drill in a conventional manner with a few caveats, using a unique name and creating a Drill resource, covered in this section.</p>
+
+<ol>
+<li>Use a unique name for the Hive UDF to avoid conflicts with Drill custom functions of the same name.</li>
+<li>Create a custom Hive UDF using either of these APIs:<br>
+
+<ul>
+<li>Simple API: org.apache.hadoop.hive.ql.exec.UDF</li>
+<li>Complex API: org.apache.hadoop.hive.ql.udf.generic.GenericUDF</li>
+</ul></li>
+<li>Create an empty <code>drill-module.conf</code> in the resources directory in the Java project. </li>
+<li>Export the logic to a JAR, including the <code>drill-module.conf</code> file in resources.</li>
+</ol>
+
+<p>The <code>drill-module.conf</code> file defines <a href="/docs/start-up-options/">startup options</a> and makes the JAR functions available to use in queries throughout the Hadoop cluster. After exporting the UDF logic to a JAR file, set up the UDF in Drill. Drill users can access the custom UDF for use in Hive queries.</p>
+
+<h2 id="setting-up-a-udf">Setting Up a UDF</h2>
+
+<p>After you export the custom UDF as a JAR, perform the UDF setup tasks so Drill can access the UDF. The JAR needs to be available at query execution time as a session resource, so Drill queries can refer to the UDF by its name.</p>
+
+<p>To set up the UDF:</p>
+
+<ol>
+<li>Register Hive. <a href="/docs/registering-hive/">Register a Hive storage plugin</a> that connects Drill to a Hive data source.</li>
+<li>In Drill 0.7 and later, add the JAR for the UDF to the Drill CLASSPATH. In earlier versions of Drill, place the JAR file in the <code>/jars/3rdparty</code> directory of the Drill installation on all nodes running a Drillbit.</li>
+<li>On each Drill node in the cluster, restart the Drillbit.
+<code>&lt;drill installation directory&gt;/bin/drillbit.sh restart</code></li>
+</ol>
+
+<h2 id="using-a-udf">Using a UDF</h2>
+
+<p>Use a Hive UDF just as you would use a Drill custom function. For example, to query using a Hive UDF named upper-to-lower that takes a column.value argument, the SELECT statement looks something like this:  </p>
+<div class="highlight"><pre><code class="language-text" data-lang="text"> SELECT upper-to-lower(my_column.myvalue) FROM mytable;
+</code></pre></div>
+      
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+                <li class="toctree-l3"><a class="reference internal" href="/docs/about-the-mapr-sandbox/">About the MapR Sandbox</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/installing-the-apache-drill-sandbox/">Installing the Apache Drill Sandbox</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/getting-to-know-the-drill-sandbox/">Getting to Know the Drill Sandbox</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/lession-1-learn-about-the-data-set/">Lession 1: Learn about the Data Set</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/lession-2-run-queries-with-ansi-sql/">Lession 2: Run Queries with ANSI SQL</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/lession-3-run-queries-on-complex-data-types/">Lession 3: Run Queries on Complex Data Types</a></li>
+              
+                <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 current_section "><a href="javascript: void(0);">Install Drill</a></li>
+          <ul class="current_section">
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/install-drill-introduction/">Install Drill Introduction</a></li>
+            
+          
+            
+              <li class="toctree-l2 current"><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"><a href="javascript: void(0);">Data Sources and File Formats</a></li>
+          <ul style="display: none">
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/data-sources-and-file-formats-introduction/">Data Sources and File Formats Introduction</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/hive-to-drill-data-type-mapping/">Hive-to-Drill Data Type Mapping</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/deploying-and-using-a-hive-udf/">Deploying and Using a Hive UDF</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/parquet-format/">Parquet Format</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/json-data-model/">JSON Data Model</a></li>
+            
+          
+          </ul>
+        
+      
+        
+          <li class="toctree-l1"><a href="javascript: void(0);">Develop Custom Functions</a></li>
+          <ul style="display: none">
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/develop-custom-functions-introduction/">Develop Custom Functions Introduction</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/develop-a-simple-function/">Develop a Simple Function</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/developing-an-aggregate-function/">Developing an Aggregate Function</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/adding-custom-functions-to-drill/">Adding Custom Functions to Drill</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/using-custom-functions-in-queries/">Using Custom Functions in Queries</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/custom-function-interfaces/">Custom Function Interfaces</a></li>
+            
+          
+          </ul>
+        
+      
+        
+          <li class="toctree-l1"><a href="javascript: void(0);">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>
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+              <li class="toctree-l2"><a class="reference internal" href="/docs/what-is-apache-drill/">What is Apache Drill</a></li>
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+  <li><a href="/docs/">Docs</a></li>
+ 
+  
+    <li><a href="/docs/install-drill/">Install Drill</a></li>
+  
+  <li>Deploying Drill in a Cluster</li>
+</nav>
+
+  <div class="main-content-wrapper">
+    <div class="main-content">
+
+      
+        <a class="edit-link" href="https://github.com/apache/drill/blob/gh-pages/_docs/install/020-deploying-drill-in-a-cluster.md" target="_blank"><i class="fa fa-pencil-square-o"></i></a>
+      
+
+      <div class="int_title">
+        <h1>Deploying Drill in a Cluster</h1>
+
+      </div>
+
+      <link href="/css/docpage.css" rel="stylesheet" type="text/css">
+
+      <div class="int_text" align="left">
+        
+          <h2 id="overview">Overview</h2>
+
+<p>To run Drill in a clustered environment, complete the following steps:</p>
+
+<ol>
+<li>Install Drill on each designated node in the cluster.</li>
+<li>Configure a cluster ID and add Zookeeper information.</li>
+<li>Connect Drill to your data sources. </li>
+<li>Start Drill.</li>
+</ol>
+
+<h3 id="prerequisites">Prerequisites</h3>
+
+<p>Before you install Apache Drill on nodes in your cluster, you must have the
+following software and services installed:</p>
+
+<ul>
+<li><a href="http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html">Oracle JDK version 7</a></li>
+<li>Configured and running ZooKeeper quorum</li>
+<li>Configured and running Hadoop cluster (Recommended)</li>
+<li>DNS (Recommended)</li>
+</ul>
+
+<h3 id="installing-drill">Installing Drill</h3>
+
+<p>Complete the following steps to install Drill on designated nodes:</p>
+
+<ol>
+<li><p>Download the Drill tarball.</p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">curl http://getdrill.org/drill/download/apache-drill-0.8.0.tar.gz
+</code></pre></div></li>
+<li><p>Issue the following command to create a Drill installation directory and then explode the tarball to the directory:</p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">mkdir /opt/drill
+tar xzf apache-drill-&lt;version&gt;.tar.gz --strip=1 -C /opt/drill
+</code></pre></div></li>
+<li><p>If you are using external JAR files, edit <code>drill-env.sh,</code>located in <code>/opt/drill/conf/</code>, and define <code>HADOOP_HOME:</code></p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">export HADOOP_HOME=&quot;~/hadoop/hadoop-0.20.2/&quot;
+</code></pre></div></li>
+<li><p>In <code>drill-override.conf,</code>create a unique Drill <code>cluster ID</code>, and provide Zookeeper host names and port numbers to configure a connection to your Zookeeper quorum.</p>
+
+<ol>
+<li>Edit <code>drill-override.conf</code>located in <code>~/drill/drill-&lt;version&gt;/conf/</code>.</li>
+<li>Provide a unique <code>cluster-id</code> and the Zookeeper host names and port numbers in <code>zk.connect</code>. If you install Drill on multiple nodes, assign the same <code>cluster ID</code> to each Drill node so that all Drill nodes share the same ID. The default Zookeeper port is 2181.</li>
+</ol></li>
+</ol>
+
+<p><strong>Example</strong></p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">drill.exec: {
+  cluster-id: &quot;&lt;mydrillcluster&gt;&quot;,
+  zk.connect: &quot;&lt;zkhostname1&gt;:&lt;port&gt;,&lt;zkhostname2&gt;:&lt;port&gt;,&lt;zkhostname3&gt;:&lt;port&gt;&quot;,
+  debug.error_on_leak: false,
+  buffer.size: 6,
+  functions: [&quot;org.apache.drill.expr.fn.impl&quot;, &quot;org.apache.drill.udfs&quot;]
+}
+</code></pre></div>
+<h3 id="connecting-drill-to-data-sources">Connecting Drill to Data Sources</h3>
+
+<p>You can connect Drill to various types of data sources. Refer to <a href="/docs/connect-a-data-source-introduction">Connect
+Apache Drill to Data Sources</a> to get configuration instructions for the
+particular type of data source that you want to connect to Drill.</p>
+
+<h3 id="starting-drill">Starting Drill</h3>
+
+<p>Complete the following steps to start Drill:</p>
+
+<ol>
+<li><p>Navigate to the Drill installation directory, and issue the following command to start a Drillbit:</p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">bin/drillbit.sh restart
+</code></pre></div></li>
+<li><p>Issue the following command to invoke SQLLine and start Drill:</p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">bin/sqlline -u jdbc:drill:
+</code></pre></div>
+<p>When connected, the Drill prompt appears.<br>
+ Example: <code>0: jdbc:drill:zk=&lt;zk1host&gt;:&lt;port&gt;</code></p>
+
+<p>If you cannot connect to Drill, invoke SQLLine with the ZooKeeper quorum:</p>
+<div class="highlight"><pre><code class="language-text" data-lang="text"> bin/sqlline -u jdbc:drill:zk=&lt;zk1host&gt;:&lt;port&gt;,&lt;zk2host&gt;:&lt;port&gt;,&lt;zk3host&gt;:&lt;port&gt;
+</code></pre></div></li>
+<li><p>Issue the following query to Drill to verify that all Drillbits have joined the cluster:</p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">0: jdbc:drill:zk=&lt;zk1host&gt;:&lt;port&gt; select * from sys.drillbits;
+</code></pre></div></li>
+</ol>
+
+<p>Drill provides a list of Drillbits that have joined.</p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">+------------+------------+--------------+--------------------+
+|    host        | user_port    | control_port | data_port    |
++------------+------------+--------------+--------------------+
+| &lt;host address&gt; | &lt;port number&gt;| &lt;port number&gt;| &lt;port number&gt;|
++------------+------------+--------------+--------------------+
+</code></pre></div>
+<p><strong>Example</strong></p>
+
+<p>Now you can query data with Drill. The Drill installation includes sample data
+that you can query. Refer to <a href="/docs/querying-parquet-files/">Querying Parquet Files</a>.</p>
+
+      
+        
+          <div class="doc-nav">
+  
+  <span class="previous-toc"><a href="/docs/install-drill-introduction/">← Install Drill Introduction</a></span><span class="next-toc"><a href="/docs/installing-drill-in-embedded-mode/">Installing Drill in Embedded Mode →</a></span>
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