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From bridg...@apache.org
Subject [11/20] drill-site git commit: updates for drill 1.9 release
Date Tue, 29 Nov 2016 22:47:54 GMT
http://git-wip-us.apache.org/repos/asf/drill-site/blob/d5a9b9b8/docs/dynamic-udfs/index.html
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+              <li class="toctree-l2"><a class="reference internal" href="/docs/analyzing-the-yelp-academic-dataset/">Analyzing the Yelp Academic Dataset</a></li>
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+              <li class="toctree-l2"><a href="javascript: void(0);">Learn Drill with the MapR Sandbox</a></li>
+              <ul style="display: none">
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+                <li class="toctree-l3"><a class="reference internal" href="/docs/installing-the-apache-drill-sandbox/">Installing the Apache Drill Sandbox</a></li>
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+                <li class="toctree-l3"><a class="reference internal" href="/docs/getting-to-know-the-drill-sandbox/">Getting to Know the Drill Sandbox</a></li>
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+                <li class="toctree-l3"><a class="reference internal" href="/docs/lesson-1-learn-about-the-data-set/">Lesson 1: Learn about the Data Set</a></li>
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+                <li class="toctree-l3"><a class="reference internal" href="/docs/lesson-2-run-queries-with-ansi-sql/">Lesson 2: Run Queries with ANSI SQL</a></li>
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+                <li class="toctree-l3"><a class="reference internal" href="/docs/lesson-3-run-queries-on-complex-data-types/">Lesson 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>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/analyzing-social-media/">Analyzing Social Media</a></li>
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+              <li class="toctree-l2"><a class="reference internal" href="/docs/analyzing-data-using-window-functions/">Analyzing Data Using Window Functions</a></li>
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+          <li class="toctree-l1"><a href="javascript: void(0);">Install Drill</a></li>
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+              <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/migrating-parquet-data/">Migrating Parquet Data</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-and-mac-os-x/">Installing Drill on Linux and Mac OS X</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/starting-drill-on-linux-and-mac-os-x/">Starting Drill on Linux and 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>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/starting-drill-on-windows/">Starting Drill on Windows</a></li>
+              
+            </ul>
+            
+          
+            
+              <li class="toctree-l2"><a href="javascript: void(0);">Installing Drill in Distributed Mode</a></li>
+              <ul style="display: none">
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/distributed-mode-prerequisites/">Distributed Mode Prerequisites</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/installing-drill-on-the-cluster/">Installing Drill on the Cluster</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/starting-drill-in-distributed-mode/">Starting Drill in Distributed Mode</a></li>
+              
+            </ul>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/starting-the-web-console/">Starting the Web Console</a></li>
+            
+          
+          </ul>
+        
+      
+        
+          <li class="toctree-l1"><a href="javascript: void(0);">Configure Drill</a></li>
+          <ul style="display: none">
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/configure-drill-introduction/">Configure Drill Introduction</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-drill-memory/">Configuring Drill Memory</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 class="reference internal" href="/docs/configuring-user-impersonation/">Configuring User Impersonation</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-inbound-impersonation/">Configuring Inbound Impersonation</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-user-authentication/">Configuring User Authentication</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-user-impersonation-with-hive-authorization/">Configuring User Impersonation with Hive Authorization</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-web-console-and-rest-api-security/">Configuring Web Console and REST API Security</a></li>
+            
+          
+            
+              <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/ports-used-by-drill/">Ports Used by Drill</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-the-drill-shell/">Configuring the Drill Shell</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-basics/">Plugin Configuration Basics</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/drill-default-input-format/">Drill Default Input Format</a></li>
+              
+            </ul>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/file-system-storage-plugin/">File System Storage Plugin</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/hbase-storage-plugin/">HBase Storage Plugin</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/hive-storage-plugin/">Hive Storage Plugin</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/rdbms-storage-plugin/">RDBMS Storage Plugin</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/mongodb-storage-plugin/">MongoDB Storage Plugin</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/mapr-db-format/">MapR-DB Format</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/s3-storage-plugin/">S3 Storage Plugin</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-the-jdbc-driver/">Using the JDBC Driver</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/using-jdbc-with-squirrel-on-windows/">Using JDBC with SQuirreL on Windows</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a href="javascript: void(0);">Installing the ODBC Driver</a></li>
+              <ul style="display: none">
+              
+                <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/installing-the-driver-on-windows/">Installing the Driver on Windows</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/installing-the-tdc-file-on-windows/">Installing the TDC File on Windows</a></li>
+              
+            </ul>
+            
+          
+            
+              <li class="toctree-l2"><a href="javascript: void(0);">Configuring ODBC</a></li>
+              <ul style="display: none">
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/odbc-configuration-reference/">ODBC Configuration Reference</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-odbc-on-linux/">Configuring ODBC on Linux</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-odbc-on-mac-os-x/">Configuring ODBC on Mac OS X</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-odbc-on-windows/">Configuring ODBC on Windows</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 Drill Explorer</a></li>
+              <ul style="display: none">
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/drill-explorer-introduction/">Drill Explorer Introduction</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/connecting-drill-explorer-to-data/">Connecting Drill Explorer to Data</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/browsing-data-and-defining-views/">Browsing Data and Defining Views</a></li>
+              
+            </ul>
+            
+          
+            
+              <li class="toctree-l2"><a href="javascript: void(0);">Using Drill with BI Tools</a></li>
+              <ul style="display: none">
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/using-drill-with-bi-tools-introduction/">Using Drill with BI Tools Introduction</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-microstrategy-analytics-with-apache-drill/">Using MicroStrategy Analytics with Apache Drill</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/using-tibco-spotfire-desktop-with-drill/">Using Tibco Spotfire Desktop with Drill</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-tibco-spotfire-server-with-drill/">Configuring Tibco Spotfire Server with Drill</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/using-qlik-sense-with-drill/">Using Qlik Sense with Drill</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/using-apache-drill-with-tableau-9-desktop/">Using Apache Drill with Tableau 9 Desktop</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/using-apache-drill-with-tableau-9-server/">Using Apache Drill with Tableau 9 Server</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/using-information-builders-webfocus-with-apache-drill/">Using Information Builders’ WebFOCUS with Apache Drill</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-jreport-with-drill/">Configuring JReport with Drill</a></li>
+              
+            </ul>
+            
+          
+          </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-avro-files/">Querying Avro Files</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>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/querying-sequence-files/">Querying Sequence Files</a></li>
+              
+            </ul>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/querying-hbase/">Querying HBase</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a href="javascript: void(0);">Querying Complex Data</a></li>
+              <ul style="display: none">
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/querying-complex-data-introduction/">Querying Complex Data Introduction</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/sample-data-donuts/">Sample Data: Donuts</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/selecting-flat-data/">Selecting Flat Data</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/using-sql-functions-clauses-and-joins/">Using SQL Functions, Clauses, and Joins</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/selecting-nested-data-for-a-column/">Selecting Nested Data for a Column</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/selecting-multiple-columns-within-nested-data/">Selecting Multiple Columns Within Nested Data</a></li>
+              
+            </ul>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/querying-hive/">Querying Hive</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/querying-the-information-schema/">Querying the INFORMATION SCHEMA</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/querying-system-tables/">Querying System Tables</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/monitoring-and-canceling-queries-in-the-drill-web-console/">Monitoring and Canceling Queries in the Drill Web Console</a></li>
+            
+          
+          </ul>
+        
+      
+        
+          <li class="toctree-l1"><a href="javascript: void(0);">Performance Tuning</a></li>
+          <ul style="display: none">
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/performance-tuning-introduction/">Performance Tuning Introduction</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a href="javascript: void(0);">Partition Pruning</a></li>
+              <ul style="display: none">
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/partition-pruning-introduction/">Partition Pruning Introduction</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/how-to-partition-data/">How to Partition Data</a></li>
+              
+            </ul>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/asynchronous-parquet-reader/">Asynchronous Parquet Reader</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/optimizing-parquet-metadata-reading/">Optimizing Parquet Metadata Reading</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/parquet-filter-pushdown/">Parquet Filter Pushdown</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/hive-metadata-caching/">Hive Metadata Caching</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/choosing-a-storage-format/">Choosing a Storage Format</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a href="javascript: void(0);">Query Plans and Tuning</a></li>
+              <ul style="display: none">
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/query-plans-and-tuning-introduction/">Query Plans and Tuning Introduction</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/join-planning-guidelines/">Join Planning Guidelines</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/guidelines-for-optimizing-aggregation/">Guidelines for Optimizing Aggregation</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/modifying-query-planning-options/">Modifying Query Planning Options</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/sort-based-and-hash-based-memory-constrained-operators/">Sort-Based and Hash-Based Memory-Constrained Operators</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/enabling-query-queuing/">Enabling Query Queuing</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/controlling-parallelization-to-balance-performance-with-multi-tenancy/">Controlling Parallelization to Balance Performance with Multi-Tenancy</a></li>
+              
+            </ul>
+            
+          
+            
+              <li class="toctree-l2"><a href="javascript: void(0);">Identifying Performance Issues</a></li>
+              <ul style="display: none">
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/query-plans/">Query Plans</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/query-profiles/">Query Profiles</a></li>
+              
+            </ul>
+            
+          
+            
+              <li class="toctree-l2"><a href="javascript: void(0);">Performance Tuning Reference</a></li>
+              <ul style="display: none">
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/query-profile-column-descriptions/">Query Profile Column Descriptions</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/physical-operators/">Physical Operators</a></li>
+              
+            </ul>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/monitoring-metrics/">Monitoring Metrics</a></li>
+            
+          
+          </ul>
+        
+      
+        
+          <li class="toctree-l1"><a href="javascript: void(0);">Log and Debug</a></li>
+          <ul style="display: none">
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/log-and-debug-introduction/">Log and Debug Introduction</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/error-messages/">Error Messages</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/modify-logback-xml/">Modify logback.xml</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/review-the-java-stack-trace/">Review the Java Stack Trace</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/query-audit-logging/">Query Audit Logging</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);">SQL Window Functions</a></li>
+              <ul style="display: none">
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/sql-window-functions-introduction/">SQL Window Functions Introduction</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/aggregate-window-functions/">Aggregate Window Functions</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/ranking-window-functions/">Ranking Window Functions</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/value-window-functions/">Value Window Functions</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/sql-window-functions-examples/">SQL Window Functions Examples</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/set/">SET</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/reset/">RESET</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/alter-system/">ALTER SYSTEM</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/create-table-as-ctas/">CREATE TABLE AS (CTAS)</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/create-function-using-jar/">CREATE FUNCTION USING JAR</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/partition-by-clause/">PARTITION BY Clause</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/create-view/">CREATE VIEW</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/describe/">DESCRIBE</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/drop-function-using-jar/">DROP FUNCTION USING JAR</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/drop-table/">DROP TABLE</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/drop-view/">DROP VIEW</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/explain/">EXPLAIN</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/select/">SELECT</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/select-list/">SELECT List</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/from-clause/">FROM Clause</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/group-by-clause/">GROUP BY Clause</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/having-clause/">HAVING Clause</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/limit-clause/">LIMIT Clause</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/offset-clause/">OFFSET Clause</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/order-by-clause/">ORDER BY Clause</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/union-set-operator/">UNION Set Operator</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/where-clause/">WHERE Clause</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/with-clause/">WITH Clause</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/show-databases-and-show-schemas/">SHOW DATABASES and SHOW SCHEMAS</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/show-files/">SHOW FILES</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/show-tables/">SHOW TABLES</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/use/">USE</a></li>
+              
+            </ul>
+            
+          
+            
+              <li class="toctree-l2"><a href="javascript: void(0);">SQL Conditional Expressions</a></li>
+              <ul style="display: none">
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/case/">CASE</a></li>
+              
+            </ul>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/reserved-keywords/">Reserved Keywords</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/sql-extensions/">SQL Extensions</a></li>
+            
+          
+          </ul>
+        
+      
+        
+          <li class="toctree-l1"><a href="javascript: void(0);">Data Sources and File Formats</a></li>
+          <ul style="display: none">
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/data-sources-and-file-formats-introduction/">Data Sources and File Formats Introduction</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/hive-to-drill-data-type-mapping/">Hive-to-Drill Data Type Mapping</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/deploying-and-using-a-hive-udf/">Deploying and Using a Hive UDF</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/parquet-format/">Parquet Format</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/json-data-model/">JSON Data Model</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/text-files-csv-tsv-psv/">Text Files: CSV, TSV, PSV</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/sequence-files/">Sequence Files</a></li>
+            
+          
+          </ul>
+        
+      
+        
+          <li class="toctree-l1 current_section "><a href="javascript: void(0);">Develop Custom Functions</a></li>
+          <ul class="current_section">
+          
+            
+              <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/developing-a-simple-function/">Developing a Simple Function</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/tutorial-develop-a-simple-function/">Tutorial: 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 href="javascript: void(0);">Adding Custom Functions to Drill</a></li>
+              <ul style="">
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/adding-custom-functions-to-drill-introduction/">Adding Custom Functions to Drill Introduction</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/manually-adding-custom-functions-to-drill/">Manually Adding Custom Functions to Drill</a></li>
+              
+                <li class="toctree-l3 current"><a class="reference internal" href="/docs/dynamic-udfs/">Dynamic UDFs</a></li>
+              
+            </ul>
+            
+          
+            
+              <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 class="reference internal" href="/docs/troubleshooting/">Troubleshooting</a></li>
+        
+      
+        
+          <li class="toctree-l1"><a href="javascript: void(0);">Developer Information</a></li>
+          <ul style="display: none">
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/rest-api/">REST API</a></li>
+            
+          
+            
+              <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>
+              
+            </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-1-9-0-release-notes/">Apache Drill 1.9.0 Release Notes</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-1-8-0-release-notes/">Apache Drill 1.8.0 Release Notes</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-1-7-0-release-notes/">Apache Drill 1.7.0 Release Notes</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-1-6-0-release-notes/">Apache Drill 1.6.0 Release Notes</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-1-5-0-release-notes/">Apache Drill 1.5.0 Release Notes</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-1-4-0-release-notes/">Apache Drill 1.4.0 Release Notes</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-1-3-0-release-notes/">Apache Drill 1.3.0 Release Notes</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-1-2-0-release-notes/">Apache Drill 1.2.0 Release Notes</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-1-1-0-release-notes/">Apache Drill 1.1.0 Release Notes</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-1-0-0-release-notes/">Apache Drill 1.0.0 Release Notes</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-0-9-0-release-notes/">Apache Drill 0.9.0 Release Notes</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-0-8-0-release-notes/">Apache Drill 0.8.0 Release Notes</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-0-7-0-release-notes/">Apache Drill 0.7.0 Release Notes</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-0-6-0-release-notes/">Apache Drill 0.6.0 Release Notes</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-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-0-5-0-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>
+            
+          
+          </ul>
+        
+      
+        
+          <li class="toctree-l1"><a href="javascript: void(0);">Sample Datasets</a></li>
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+            
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+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/enron-emails/">Enron Emails</a></li>
+            
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+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/wikipedia-edit-history/">Wikipedia Edit History</a></li>
+            
+          
+          </ul>
+        
+      
+        
+          <li class="toctree-l1"><a class="reference internal" href="/docs/project-bylaws/">Project Bylaws</a></li>
+        
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+    </div>
+  </div>
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+
+
+<nav class="breadcrumbs">
+  <li><a href="/docs/">Docs</a></li>
+ 
+  
+    <li><a href="/docs/develop-custom-functions/">Develop Custom Functions</a></li>
+  
+    <li><a href="/docs/adding-custom-functions-to-drill/">Adding Custom Functions to Drill</a></li>
+  
+  <li>Dynamic UDFs</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/develop-custom-functions/adding-custom-functions-to-drill/020-dynamic-udfs.md" target="_blank"><i class="fa fa-pencil-square-o"></i></a>
+    
+
+    <div class="int_title left">
+      <h1>Dynamic UDFs</h1>
+
+    </div>
+
+     Nov 22, 2016
+
+    <link href="/css/docpage.css" rel="stylesheet" type="text/css">
+
+    <div class="int_text" align="left">
+      
+        <p>Drill 1.9 introduces support for Dynamic UDFs. The Dynamic UDF feature enables users to register and unregister UDFs on their own using the CREATE FUNCTION USING JAR and DROP FUNCTION USING JAR commands.  </p>
+
+<p>The Dynamic UDF feature eliminates the need to restart drillbits, which can disrupt users, when administrators manually load and unload UDFs in a multi-tenant environment. Users can issue the CREATE FUNCTION USING JAR command to register manually loaded (built-in) UDFs. Also, users can migrate registered UDFs to built-in UDFs.  </p>
+
+<p>The Dynamic UDF feature is enabled by default. An administrator can enable or disable the feature using the ALTER SYSTEM SET command with the <code>exec.udf.enable_dynamic_support option</code>. When the feature is enabled, users must upload their UDF (source and binary) JAR files to a staging directory in the distributed file system before issuing the CREATE FUNCTION USING JAR command to register a UDF.  </p>
+
+<p>If users do not have write access to the staging directory, the registration attempt fails. When a user issues the CREATE FUNCTION USING JAR command to register a UDF, Drill uses specific directories while validating and registering the UDFs. The <a href="/docs/persistent-configuration-storage/">persistent configuration store</a> stores the list of UDFs and associated JAR files. Drillbits refer to this list when registering and unregistering UDFs.  </p>
+
+<h2 id="udf-directories">UDF Directories</h2>
+
+<p>The directories that Drill uses when registering UDFs are configured in the <code>drill.exec.udf</code> stanza of the <code>drill-override.conf</code> file. Upon startup, Drill verifies that these directories exist in the file system.  If the directories do not exist, Drill creates them. If Drill is unable to create the directories, the start-up attempt fails. An administrator can modify the directory locations in <code>drill-override.conf</code>.</p>
+
+<p>The configuration file contains the following default properties and directories required to use the Dynamic UDF feature:  </p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">   drill.exec.udf: {
+                retry-attempts: 5,  
+   directory: {
+            base: ${drill.exec.zk.root}&quot;/udf&quot;,
+                local: ${drill.exec.udf.directory.base}&quot;/local&quot;,
+                staging: ${drill.exec.udf.directory.base}&quot;/staging&quot;,
+                registry: ${drill.exec.udf.directory.base}&quot;/registry&quot;,
+                tmp: ${drill.exec.udf.directory.base}&quot;/tmp&quot;
+                }
+   }  
+</code></pre></div>
+<p>The following table describes the configuration properties and UDF directories, where <code>drill.exec.udf.directory.base</code> is the relative directory used to generate all of the UDF directories (local and remote):  </p>
+
+<table><thead>
+<tr>
+<th>Property</th>
+<th>Description</th>
+</tr>
+</thead><tbody>
+<tr>
+<td>retry-attempts</td>
+<td>The   number of times that the UDF registry update can fail before Drill returns an   error. Drill checks the registry version before updating the remote function   registry to avoid overriding changes made by another user. If the registry   version has changed, Drill validates the functions among the updated registry   again. The default is 5.</td>
+</tr>
+<tr>
+<td>base: ${drill.exec.zk.root}&quot;/udf&quot;</td>
+<td>The   property used to separate the UDF directories between clusters that use the   same file system.</td>
+</tr>
+<tr>
+<td>local:   ${drill.exec.udf.directory.base}&quot;/local&quot;</td>
+<td>The relative path concatenated   to the Drill temporary directory to indicate the local UDF directory. The   local UDF directory is used as a temporary directory for the Dynamic UDF JAR   files. Drill cleans this directory out upon exiting.</td>
+</tr>
+<tr>
+<td>staging:   ${drill.exec.udf.directory.base}&quot;/staging&quot;</td>
+<td>The   location to which users copy their binary and source JAR files. This   directory must be accessible to users in order to register their UDFs. When a   UDF is registered, Drill deletes both of the JAR files (source and binary)   from this directory. If Drill fails to register the UDFs from the JAR files,   the JAR files remain here. You can change the location of this   directory.</td>
+</tr>
+<tr>
+<td>registry:   ${drill.exec.udf.directory.base}&quot;/registry&quot;</td>
+<td>The   location to which Drill copies the source and binary JAR files after   validating the UDFs. Drill copies the JAR files from the registry directory   to a local UDF directory on each drillbit. When you unregister UDFs, Drill   deletes the appropriate JAR files from the local UDF directory on each   drillbit. DO NOT delete the JAR files from the registry directory. Deleting   JAR files from the registry directory results in inconsistencies in the   Dynamic UDF registry that point to the directory where JAR files are stored.   You can change the location of this directory.</td>
+</tr>
+<tr>
+<td>tmp:   ${drill.exec.udf.directory.base}&quot;/tmp&quot;</td>
+<td>The   location to which Drill backs up the binary and source JAR files before   starting the registration process. Drill places each binary and source file   in a unique folder in this directory. At the end of registration, Drill   deletes both JAR files from this directory. You can change the location of   this directory.</td>
+</tr>
+</tbody></table>
+
+<p>The following table lists optional directories that you can add:  </p>
+
+<table><thead>
+<tr>
+<th>Property</th>
+<th>Description</th>
+</tr>
+</thead><tbody>
+<tr>
+<td>drill.exec.udf.directory.fs</td>
+<td>Changes the file system from the   default. If there are multiple drillbits in the cluster, and the default file   system is not distributed, you must include this property, and set it to a   distributed file system. For example, file:///, hdfs:///, or maprfs:///, as   shown below:          drill.exec.udf.directory.fs: &quot;hdfs:///&quot;</td>
+</tr>
+<tr>
+<td>drill.exec.udf.directory.root</td>
+<td>Changes   the root directory for remote UDF directories. By default, this property is   set to the home directory of the user that started the drillbit. For example,   on Linux the location is /home/some_user. On DFS, the location is   /user/<user_name>. And, on Windows, the location is   /C:/User/<user_name>.</td>
+</tr>
+</tbody></table>
+
+<h2 id="security-and-authentication-impact">Security and Authentication Impact</h2>
+
+<p>Currently, any user can register UDFs if they
+have access to the staging directory. Since Drill does not provide full
+authorization and authentication support, an administrator may want to disable
+the Dynamic UDF feature. See <a href="/docs/dynamic-udfs/#enabling-and-disabling-the-dynamic-udf-feature">Enabling and Disabling the Dynamic UDF Feature</a>.</p>
+
+<p>Drill moves all JAR files from the staging directory to the other UDF directories as the user that started the drillbit, not as the user that submitted the JAR files. Drill behaves this way even if impersonation is enabled.  </p>
+
+<h2 id="before-using-the-dynamic-udf-feature">Before Using the Dynamic UDF Feature</h2>
+
+<p>Before users can successfully register and unregister their UDFs using the Dynamic UDF feature, administrators and users must complete certain prerequisites. The prerequisites for each role are listed below.  </p>
+
+<h3 id="administrators">Administrators</h3>
+
+<p>Before users can issue the CREATE FUNCTION USING JAR or DROP FUNCTION USING JAR commands to register or unregister UDFs, verify that the <code>exec.udf.enable_dynamic_support</code> option is enabled and the staging directory is accessible to users. See <a href="/docs/dynamic-udfs/#enabling-and-disabling-the-dynamic-udf-feature">Enabling and Disabling the Dynamic UDF Feature</a>.  </p>
+
+<h3 id="users">Users</h3>
+
+<p>Create a UDF using Drill’s <a href="/docs/developing-a-simple-function/">simple</a> or <a href="/docs/developing-an-aggregate-function/">aggregate</a> function interface. Add a <code>drill-module.conf</code> file to the root of the class JAR file. The <code>drill-module.conf</code> file should contain the packages to scan for the functions <code>drill.classpath.scanning.packages+= &quot;com.mydomain.drill.fn&quot;</code>, as shown in the following example:  </p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">   drill.classpath.scanning.package+= &quot;com.mydomain.drill.fn&quot;  
+</code></pre></div>
+<p>Replace <code>com.mydomain.drill.fn</code> with the package name(s) of your UDF(s). If there are multiple packages, separate package names with a comma.</p>
+
+<p>Once the UDF is created, copy the source and binary JAR files to the staging directory. If you do not know the location of the staging directory, contact your administrator. Now, you can register your UDF using the CREATE FUNCTION USING JAR command. See <a href="/docs/dynamic-udfs/#registering-a-udf">Registering a UDF</a>.  </p>
+
+<h2 id="enabling-and-disabling-the-dynamic-udf-feature">Enabling and Disabling the Dynamic UDF Feature</h2>
+
+<p>An administrator can enable or disable the Dynamic UDF feature. The feature is enabled by default.  The <code>exec.udf.enable_dynamic_support</code> option turns the Dynamic UDF feature on and off. If security is a concern, the administrator can disable the feature to prevent users from registering and unregistering UDFs.</p>
+
+<p>Use the <a href="/docs/alter-system/">ALTER SYSTEM SET</a> command with the  <code>exec.udf.enable_dynamic_support</code> system option to turn the feature on or off.  </p>
+
+<h2 id="registering-a-udf">Registering a UDF</h2>
+
+<p>Copy the UDF source and binary JAR files to the DFS staging directory and then issue the CREATE FUNCTION USING JAR command to register the UDF, as follows:   </p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">   CREATE FUNCTION USING JAR ‘&lt;jar_name&gt;.jar’  
+</code></pre></div>
+<p>If you do not know the location of the staging directory or you need access to the directory, contact your administrator.</p>
+
+<p>When you issue the command, Drill uses the JAR file name to register the JAR name in the Dynamic UDF registry (<a href="/docs/persistent-configuration-storage/">persistent store</a>) and then copies the source and binary JAR files to the local UDF directory on each drillbit.  </p>
+
+<p>Upon successful registration, Drill returns a message with a list of registered UDFs:  </p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">   +---------------+-----------------------------------------------------------------------------------------------------------+
+   | ok           |    summary                                                                                         |
+   +---------------+-----------------------------------------------------------------------------------------------------------+
+   | true          | The following UDFs in jar %s have been registered: %s                           |
+   +---------------+-----------------------------------------------------------------------------------------------------------+  
+</code></pre></div>
+<h2 id="unregistering-a-udf">Unregistering a UDF</h2>
+
+<p>Issue the DROP FUNCTION USING JAR command to unregister a UDF, as follows:  </p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">   DROP FUNCTION USING JAR ‘&lt;jar_name&gt;.jar’  
+</code></pre></div>
+<p>When you issue the command, Drill unregisters UDFs based on the JAR file name and removes the JAR files from the UDF directory. Drill deletes all UDFs associated with the JAR file from the UDF registry (<a href="/docs/persistent-configuration-storage/">persistent store</a>, signaling drillbits to start the local unregistering process.  </p>
+
+<p>Drill returns a message with the list of unregistered UDFs:  </p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">   +---------------+-----------------------------------------------------------------------------------------------------------+
+   | ok           |    summary                                                                                         |
+   +---------------+-----------------------------------------------------------------------------------------------------------+
+   | true          | The following UDFs in jar %s have been unregistered: %s                          |
+   +---------------+-----------------------------------------------------------------------------------------------------------+  
+</code></pre></div>
+<h2 id="migrating-udfs-from-dynamic-to-built-in">Migrating UDFs from Dynamic to Built-In</h2>
+
+<p>You can migrate UDFs registered using the Dynamic UDF feature to built-in UDFs to free up space in the UDF directories and the Dynamic UDF registry (<a href="/docs/persistent-configuration-storage/">persistent store</a>). You can migrate all of the UDFs or you can migrate a portion of the UDFs. If you migrate all of the UDFs, you cannot issue the DROP FUNCTION USING JAR command to unregister the UDFs that have been migrated from dynamic to built-in.  </p>
+
+<h3 id="migrating-all-registered-udfs-to-built-in-udfs">Migrating All Registered UDFs to Built-In UDFs</h3>
+
+<p>To migrate all registered UDFs to built-in UDFs, complete the following steps:  </p>
+
+<ol>
+<li>Stop all drillbits in the cluster.<br></li>
+<li>Move the UDF source and binary JAR files to the $DRILL_SITE/jars directory on each drillbit. (Must be included in the classpath.)</li>
+<li>Remove the remote function registry from ZooKeeper.</li>
+<li>Start all drillbits in the cluster.</li>
+</ol>
+
+<h3 id="migrating-some-of-the-registered-udf-jar-files-to-built-in-udfs">Migrating Some of the Registered UDF JAR Files to Built-In UDFs</h3>
+
+<p>To migrate a portion of the UDF JAR files to built-in UDFs, complete the following steps:</p>
+
+<ol>
+<li>Copy (not move) the JAR files from the UDF registry directory to the $DRILL_SITE/jars directory on each drillbit. (Must be included in the classpath.)</li>
+<li>Issue the DROP FUNCTION USING JAR command for each JAR file.</li>
+<li>Stop all drillbits in the cluster.</li>
+<li>Start all drillbits in the cluster.<br></li>
+</ol>
+
+<h2 id="limitations">Limitations</h2>
+
+<p>The Dynamic UDF feature has the following known limitations:  </p>
+
+<ul>
+<li>If a user drops a UDF while a query that references the UDF is running, the query may fail. Users should verify that no queries reference a UDF prior to issuing the DROP command.</li>
+<li>The DROP command only operates at the JAR level name. A user cannot unregister only one UDF from a JAR where several UDFs are present. To avoid this situation, a user can create one UDF per jar.</li>
+<li>All UDF directories (remote or local) are created upon drillbit startup, even if Dynamic UDF support is disabled. Drillbit startup fails if the user who started the drillbit does not have write access to these directories.</li>
+</ul>
+
+    
+      
+        <div class="doc-nav">
+  
+  <span class="previous-toc"><a href="/docs/manually-adding-custom-functions-to-drill/">← Manually Adding Custom Functions to Drill</a></span><span class="next-toc"><a href="/docs/using-custom-functions-in-queries/">Using Custom Functions in Queries →</a></span>
+</div>
+
+    
+    </div>
+  </div>
+</div>
+
+  </div>
+  <p class="push"></p>
+<div id="footer" class="mw">
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+              <li class="toctree-l2"><a class="reference internal" href="/docs/asynchronous-parquet-reader/">Asynchronous Parquet Reader</a></li>
+            
+          
+            
               <li class="toctree-l2"><a class="reference internal" href="/docs/optimizing-parquet-metadata-reading/">Optimizing Parquet Metadata Reading</a></li>
             
           
             
+              <li class="toctree-l2"><a class="reference internal" href="/docs/parquet-filter-pushdown/">Parquet Filter Pushdown</a></li>
+            
+          
+            
               <li class="toctree-l2"><a class="reference internal" href="/docs/hive-metadata-caching/">Hive Metadata Caching</a></li>
             
           
@@ -759,12 +767,16 @@
               
                 <li class="toctree-l3"><a class="reference internal" href="/docs/create-table-as-ctas/">CREATE TABLE AS (CTAS)</a></li>
               
+                <li class="toctree-l3"><a class="reference internal" href="/docs/create-function-using-jar/">CREATE FUNCTION USING JAR</a></li>
+              
                 <li class="toctree-l3"><a class="reference internal" href="/docs/partition-by-clause/">PARTITION BY Clause</a></li>
               
                 <li class="toctree-l3"><a class="reference internal" href="/docs/create-view/">CREATE VIEW</a></li>
               
                 <li class="toctree-l3"><a class="reference internal" href="/docs/describe/">DESCRIBE</a></li>
               
+                <li class="toctree-l3"><a class="reference internal" href="/docs/drop-function-using-jar/">DROP FUNCTION USING JAR</a></li>
+              
                 <li class="toctree-l3"><a class="reference internal" href="/docs/drop-table/">DROP TABLE</a></li>
               
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@@ -880,7 +892,16 @@
             
           
             
-              <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 href="javascript: void(0);">Adding Custom Functions to Drill</a></li>
+              <ul style="display: none">
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/adding-custom-functions-to-drill-introduction/">Adding Custom Functions to Drill Introduction</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/manually-adding-custom-functions-to-drill/">Manually Adding Custom Functions to Drill</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/dynamic-udfs/">Dynamic UDFs</a></li>
+              
+            </ul>
             
           
             
@@ -951,6 +972,10 @@
           <ul style="display: none">
           
             
+              <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-1-9-0-release-notes/">Apache Drill 1.9.0 Release Notes</a></li>
+            
+          
+            
               <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-1-8-0-release-notes/">Apache Drill 1.8.0 Release Notes</a></li>
             
           
@@ -1074,7 +1099,7 @@
 
     </div>
 
-     Mar 22, 2016
+     Nov 29, 2016
 
     <link href="/css/docpage.css" rel="stylesheet" type="text/css">
 
@@ -1085,7 +1110,7 @@
 <p>Before you install Drill, ensure that the machine meets the following prerequisites:</p>
 
 <ul>
-<li>Linux, Mac OS X, and Windows: Oracle JDK <a href="http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html">version 7</a><br></li>
+<li>Linux, Mac OS X, and Windows: Oracle JDK <a href="http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html">version 7</a> or <a href="http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html">version 8</a> if running Drill 1.6 or later.<br></li>
 <li>Windows only:<br>
 
 <ul>

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@@ -569,10 +569,18 @@
             
           
             
+              <li class="toctree-l2"><a class="reference internal" href="/docs/asynchronous-parquet-reader/">Asynchronous Parquet Reader</a></li>
+            
+          
+            
               <li class="toctree-l2"><a class="reference internal" href="/docs/optimizing-parquet-metadata-reading/">Optimizing Parquet Metadata Reading</a></li>
             
           
             
+              <li class="toctree-l2"><a class="reference internal" href="/docs/parquet-filter-pushdown/">Parquet Filter Pushdown</a></li>
+            
+          
+            
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@@ -759,12 +767,16 @@
               
                 <li class="toctree-l3"><a class="reference internal" href="/docs/create-table-as-ctas/">CREATE TABLE AS (CTAS)</a></li>
               
+                <li class="toctree-l3"><a class="reference internal" href="/docs/create-function-using-jar/">CREATE FUNCTION USING JAR</a></li>
+              
                 <li class="toctree-l3"><a class="reference internal" href="/docs/partition-by-clause/">PARTITION BY Clause</a></li>
               
                 <li class="toctree-l3"><a class="reference internal" href="/docs/create-view/">CREATE VIEW</a></li>
               
                 <li class="toctree-l3"><a class="reference internal" href="/docs/describe/">DESCRIBE</a></li>
               
+                <li class="toctree-l3"><a class="reference internal" href="/docs/drop-function-using-jar/">DROP FUNCTION USING JAR</a></li>
+              
                 <li class="toctree-l3"><a class="reference internal" href="/docs/drop-table/">DROP TABLE</a></li>
               
                 <li class="toctree-l3"><a class="reference internal" href="/docs/drop-view/">DROP VIEW</a></li>
@@ -880,7 +892,16 @@
             
           
             
-              <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 href="javascript: void(0);">Adding Custom Functions to Drill</a></li>
+              <ul style="display: none">
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/adding-custom-functions-to-drill-introduction/">Adding Custom Functions to Drill Introduction</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/manually-adding-custom-functions-to-drill/">Manually Adding Custom Functions to Drill</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/dynamic-udfs/">Dynamic UDFs</a></li>
+              
+            </ul>
             
           
             
@@ -951,6 +972,10 @@
           <ul style="display: none">
           
             
+              <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-1-9-0-release-notes/">Apache Drill 1.9.0 Release Notes</a></li>
+            
+          
+            
               <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-1-8-0-release-notes/">Apache Drill 1.8.0 Release Notes</a></li>
             
           
@@ -1074,7 +1099,7 @@
 
     </div>
 
-     
+     Nov 21, 2016
 
     <link href="/css/docpage.css" rel="stylesheet" type="text/css">
 

http://git-wip-us.apache.org/repos/asf/drill-site/blob/d5a9b9b8/docs/enron-emails/index.html
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diff --git a/docs/enron-emails/index.html b/docs/enron-emails/index.html
index 90cf814..c1b8ee4 100644
--- a/docs/enron-emails/index.html
+++ b/docs/enron-emails/index.html
@@ -569,10 +569,18 @@
             
           
             
+              <li class="toctree-l2"><a class="reference internal" href="/docs/asynchronous-parquet-reader/">Asynchronous Parquet Reader</a></li>
+            
+          
+            
               <li class="toctree-l2"><a class="reference internal" href="/docs/optimizing-parquet-metadata-reading/">Optimizing Parquet Metadata Reading</a></li>
             
           
             
+              <li class="toctree-l2"><a class="reference internal" href="/docs/parquet-filter-pushdown/">Parquet Filter Pushdown</a></li>
+            
+          
+            
               <li class="toctree-l2"><a class="reference internal" href="/docs/hive-metadata-caching/">Hive Metadata Caching</a></li>
             
           
@@ -759,12 +767,16 @@
               
                 <li class="toctree-l3"><a class="reference internal" href="/docs/create-table-as-ctas/">CREATE TABLE AS (CTAS)</a></li>
               
+                <li class="toctree-l3"><a class="reference internal" href="/docs/create-function-using-jar/">CREATE FUNCTION USING JAR</a></li>
+              
                 <li class="toctree-l3"><a class="reference internal" href="/docs/partition-by-clause/">PARTITION BY Clause</a></li>
               
                 <li class="toctree-l3"><a class="reference internal" href="/docs/create-view/">CREATE VIEW</a></li>
               
                 <li class="toctree-l3"><a class="reference internal" href="/docs/describe/">DESCRIBE</a></li>
               
+                <li class="toctree-l3"><a class="reference internal" href="/docs/drop-function-using-jar/">DROP FUNCTION USING JAR</a></li>
+              
                 <li class="toctree-l3"><a class="reference internal" href="/docs/drop-table/">DROP TABLE</a></li>
               
                 <li class="toctree-l3"><a class="reference internal" href="/docs/drop-view/">DROP VIEW</a></li>
@@ -880,7 +892,16 @@
             
           
             
-              <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 href="javascript: void(0);">Adding Custom Functions to Drill</a></li>
+              <ul style="display: none">
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/adding-custom-functions-to-drill-introduction/">Adding Custom Functions to Drill Introduction</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/manually-adding-custom-functions-to-drill/">Manually Adding Custom Functions to Drill</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/dynamic-udfs/">Dynamic UDFs</a></li>
+              
+            </ul>
             
           
             
@@ -951,6 +972,10 @@
           <ul style="display: none">
           
             
+              <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-1-9-0-release-notes/">Apache Drill 1.9.0 Release Notes</a></li>
+            
+          
+            
               <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-1-8-0-release-notes/">Apache Drill 1.8.0 Release Notes</a></li>
             
           

http://git-wip-us.apache.org/repos/asf/drill-site/blob/d5a9b9b8/docs/error-messages/index.html
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diff --git a/docs/error-messages/index.html b/docs/error-messages/index.html
index 4bb450e..f567738 100644
--- a/docs/error-messages/index.html
+++ b/docs/error-messages/index.html
@@ -569,10 +569,18 @@
             
           
             
+              <li class="toctree-l2"><a class="reference internal" href="/docs/asynchronous-parquet-reader/">Asynchronous Parquet Reader</a></li>
+            
+          
+            
               <li class="toctree-l2"><a class="reference internal" href="/docs/optimizing-parquet-metadata-reading/">Optimizing Parquet Metadata Reading</a></li>
             
           
             
+              <li class="toctree-l2"><a class="reference internal" href="/docs/parquet-filter-pushdown/">Parquet Filter Pushdown</a></li>
+            
+          
+            
               <li class="toctree-l2"><a class="reference internal" href="/docs/hive-metadata-caching/">Hive Metadata Caching</a></li>
             
           
@@ -759,12 +767,16 @@
               
                 <li class="toctree-l3"><a class="reference internal" href="/docs/create-table-as-ctas/">CREATE TABLE AS (CTAS)</a></li>
               
+                <li class="toctree-l3"><a class="reference internal" href="/docs/create-function-using-jar/">CREATE FUNCTION USING JAR</a></li>
+              
                 <li class="toctree-l3"><a class="reference internal" href="/docs/partition-by-clause/">PARTITION BY Clause</a></li>
               
                 <li class="toctree-l3"><a class="reference internal" href="/docs/create-view/">CREATE VIEW</a></li>
               
                 <li class="toctree-l3"><a class="reference internal" href="/docs/describe/">DESCRIBE</a></li>
               
+                <li class="toctree-l3"><a class="reference internal" href="/docs/drop-function-using-jar/">DROP FUNCTION USING JAR</a></li>
+              
                 <li class="toctree-l3"><a class="reference internal" href="/docs/drop-table/">DROP TABLE</a></li>
               
                 <li class="toctree-l3"><a class="reference internal" href="/docs/drop-view/">DROP VIEW</a></li>
@@ -880,7 +892,16 @@
             
           
             
-              <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 href="javascript: void(0);">Adding Custom Functions to Drill</a></li>
+              <ul style="display: none">
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/adding-custom-functions-to-drill-introduction/">Adding Custom Functions to Drill Introduction</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/manually-adding-custom-functions-to-drill/">Manually Adding Custom Functions to Drill</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/dynamic-udfs/">Dynamic UDFs</a></li>
+              
+            </ul>
             
           
             
@@ -951,6 +972,10 @@
           <ul style="display: none">
           
             
+              <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-1-9-0-release-notes/">Apache Drill 1.9.0 Release Notes</a></li>
+            
+          
+            
               <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-1-8-0-release-notes/">Apache Drill 1.8.0 Release Notes</a></li>
             
           

http://git-wip-us.apache.org/repos/asf/drill-site/blob/d5a9b9b8/docs/explain/index.html
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diff --git a/docs/explain/index.html b/docs/explain/index.html
index f7c0840..db612d5 100644
--- a/docs/explain/index.html
+++ b/docs/explain/index.html
@@ -569,10 +569,18 @@
             
           
             
+              <li class="toctree-l2"><a class="reference internal" href="/docs/asynchronous-parquet-reader/">Asynchronous Parquet Reader</a></li>
+            
+          
+            
               <li class="toctree-l2"><a class="reference internal" href="/docs/optimizing-parquet-metadata-reading/">Optimizing Parquet Metadata Reading</a></li>
             
           
             
+              <li class="toctree-l2"><a class="reference internal" href="/docs/parquet-filter-pushdown/">Parquet Filter Pushdown</a></li>
+            
+          
+            
               <li class="toctree-l2"><a class="reference internal" href="/docs/hive-metadata-caching/">Hive Metadata Caching</a></li>
             
           
@@ -759,12 +767,16 @@
               
                 <li class="toctree-l3"><a class="reference internal" href="/docs/create-table-as-ctas/">CREATE TABLE AS (CTAS)</a></li>
               
+                <li class="toctree-l3"><a class="reference internal" href="/docs/create-function-using-jar/">CREATE FUNCTION USING JAR</a></li>
+              
                 <li class="toctree-l3"><a class="reference internal" href="/docs/partition-by-clause/">PARTITION BY Clause</a></li>
               
                 <li class="toctree-l3"><a class="reference internal" href="/docs/create-view/">CREATE VIEW</a></li>
               
                 <li class="toctree-l3"><a class="reference internal" href="/docs/describe/">DESCRIBE</a></li>
               
+                <li class="toctree-l3"><a class="reference internal" href="/docs/drop-function-using-jar/">DROP FUNCTION USING JAR</a></li>
+              
                 <li class="toctree-l3"><a class="reference internal" href="/docs/drop-table/">DROP TABLE</a></li>
               
                 <li class="toctree-l3"><a class="reference internal" href="/docs/drop-view/">DROP VIEW</a></li>
@@ -880,7 +892,16 @@
             
           
             
-              <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 href="javascript: void(0);">Adding Custom Functions to Drill</a></li>
+              <ul style="display: none">
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/adding-custom-functions-to-drill-introduction/">Adding Custom Functions to Drill Introduction</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/manually-adding-custom-functions-to-drill/">Manually Adding Custom Functions to Drill</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/dynamic-udfs/">Dynamic UDFs</a></li>
+              
+            </ul>
             
           
             
@@ -951,6 +972,10 @@
           <ul style="display: none">
           
             
+              <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-1-9-0-release-notes/">Apache Drill 1.9.0 Release Notes</a></li>
+            
+          
+            
               <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-1-8-0-release-notes/">Apache Drill 1.8.0 Release Notes</a></li>
             
           


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