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From tshi...@apache.org
Subject [04/21] drill-site git commit: Doc changes
Date Wed, 20 May 2015 06:08:53 GMT
http://git-wip-us.apache.org/repos/asf/drill-site/blob/9833d32c/docs/troubleshooting/index.html
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+          <ul style="display: none">
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+              <li class="toctree-l2"><a class="reference internal" href="/docs/drill-introduction/">Drill Introduction</a></li>
+            
+          
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+              <li class="toctree-l2"><a class="reference internal" href="/docs/why-drill/">Why Drill</a></li>
+            
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+          </ul>
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+      
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+          <li class="toctree-l1"><a href="javascript: void(0);">Architecture</a></li>
+          <ul style="display: none">
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+              <li class="toctree-l2"><a class="reference internal" href="/docs/architecture-introduction/">Architecture Introduction</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/drill-query-execution/">Drill Query Execution</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/core-modules/">Core Modules</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/performance/">Performance</a></li>
+            
+          
+          </ul>
+        
+      
+        
+          <li class="toctree-l1"><a href="javascript: void(0);">Tutorials</a></li>
+          <ul style="display: none">
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/tutorials-introduction/">Tutorials Introduction</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/drill-in-10-minutes/">Drill in 10 Minutes</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/analyzing-the-yelp-academic-dataset/">Analyzing the Yelp Academic Dataset</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a href="javascript: void(0);">Learn Drill with the MapR Sandbox</a></li>
+              <ul style="display: none">
+              
+                <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/lesson-1-learn-about-the-data-set/">Lesson 1: Learn about the Data Set</a></li>
+              
+                <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>
+              
+                <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>
+            
+          
+          </ul>
+        
+      
+        
+          <li class="toctree-l1"><a href="javascript: void(0);">Install Drill</a></li>
+          <ul style="display: none">
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/install-drill-introduction/">Install Drill Introduction</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a 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>
+            
+          
+          </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-user-authentication/">Configuring User Authentication</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-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-with-squirrel-on-windows/">Using JDBC with SQuirreL on Windows</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-apache-drill/">Using MicroStrategy Analytics with Apache Drill</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/using-tibco-spotfire-with-drill/">Using Tibco Spotfire with Drill</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-tibco-spotfire-server-with-drill/">Configuring Tibco Spotfire Server with Drill</a></li>
+            
+          
+            
+              <li class="toctree-l2"><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-l2"><a class="reference internal" href="/docs/using-apache-drill-with-tableau-9-server/">Using Apache Drill with Tableau 9 Server</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>
+            
+          
+            
+              <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);">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 class="reference internal" href="/docs/partition-pruning/">Partition Pruning</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>
+            
+          
+          </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>
+            
+          
+          </ul>
+        
+      
+        
+          <li class="toctree-l1"><a href="javascript: void(0);">Query Audit Logging</a></li>
+          <ul style="display: none">
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/getting-query-information/">Getting Query Information</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/">ALTER SESSION</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-view/">CREATE VIEW</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/describe/">DESCRIBE</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-from/">SELECT FROM</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/select-group-by/">SELECT GROUP BY</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/select-having/">SELECT HAVING</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/select-limit/">SELECT LIMIT</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/select-offset/">SELECT OFFSET</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/select-order-by/">SELECT ORDER BY</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/select-union/">SELECT UNION</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/select-where/">SELECT WHERE</a></li>
+              
+                <li class="toctree-l3"><a class="reference internal" href="/docs/select-with/">SELECT WITH</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>
+            
+          
+          </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 current"><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 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>
+            
+          
+            
+              <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-1-0-0-release-notes/">Apache Drill 1.0.0 Release Notes</a></li>
+            
+          
+          </ul>
+        
+      
+        
+          <li class="toctree-l1"><a href="javascript: void(0);">Sample Datasets</a></li>
+          <ul style="display: none">
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/aol-search/">AOL Search</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/enron-emails/">Enron Emails</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/wikipedia-edit-history/">Wikipedia Edit History</a></li>
+            
+          
+          </ul>
+        
+      
+        
+          <li class="toctree-l1"><a href="javascript: void(0);">Archived Pages</a></li>
+          <ul style="display: none">
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/how-to-run-the-drill-demo/">How to Run the Drill Demo</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/what-is-apache-drill/">What is Apache Drill</a></li>
+            
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/partition-pruning/">Partition Pruning</a></li>
+            
+          
+          </ul>
+        
+      
+        
+          <li class="toctree-l1"><a href="javascript: void(0);">Progress Reports</a></li>
+          <ul style="display: none">
+          
+            
+              <li class="toctree-l2"><a class="reference internal" href="/docs/2014-q1-drill-report/">2014 Q1 Drill Report</a></li>
+            
+          
+          </ul>
+        
+      
+        
+          <li class="toctree-l1"><a class="reference internal" href="/docs/project-bylaws/">Project Bylaws</a></li>
+        
+      
+      </ul>
+
+    </div>
+  </div>
+</aside>
+
+
+<nav class="breadcrumbs">
+  <li><a href="/docs/">Docs</a></li>
+ 
+  
+  <li>Troubleshooting</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/110-troubleshooting.md" target="_blank"><i class="fa fa-pencil-square-o"></i></a>
+    
+
+    <div class="int_title left">
+      <h1>Troubleshooting</h1>
+
+    </div>
+
+    <link href="/css/docpage.css" rel="stylesheet" type="text/css">
+
+    <div class="int_text" align="left">
+      
+        <p>You may experience certain known issues when using Drill. This document lists some known issues and resolutions for each.</p>
+
+<h2 id="before-you-begin">Before You Begin</h2>
+
+<p>Before you begin troubleshooting issues that you encounter in Drill, make sure you know which Drillbit is acting as the Foreman in the Drill cluster. The Drill node to which a client or application connects is the Foreman. </p>
+
+<p>You should also know the version of Drill running in the cluster. You can search JIRA for issues related to the version to see if a patch or workaround exists for the issue that you encountered.</p>
+
+<h3 id="identify-the-foreman">Identify the Foreman</h3>
+
+<p>Issue the following query to identify the node running as the Foreman:
+SELECT host FROM sys.drillbits WHERE <code>current</code> = true;</p>
+
+<h3 id="identify-the-drill-version">Identify the Drill Version</h3>
+
+<p>Issue the following query to identify the version of Drill running in your cluster:
+SELECT commit_id FROM sys.version;</p>
+
+<h3 id="enable-verbose-errors">Enable Verbose Errors</h3>
+
+<p>You can enable the verbose errors option for a more detailed error print-out.</p>
+
+<p>Issue the following command to enable the verbose errors option:  </p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">   ALTER SESSION SET `exec.errors.verbose` = true
+</code></pre></div>
+<h2 id="troubleshooting">Troubleshooting</h2>
+
+<p>If you have any issues in Drill, search the following list for your issue and apply the suggested solution:</p>
+
+<p><strong>Query Parsing Errors</strong><br>
+Symptom:  </p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">   PARSE ERROR: At line x, column x: ...
+</code></pre></div>
+<p>Solution: Verify that you are using valid syntax. See <a href="/docs/sql-reference-introduction/">SQL Reference</a>.
+If you are using common words, they may be reserved words.  Make sure to use back ticks
+Confirm that you are using back ticks to quote identifiers when using special characters such as back slashes or periods from a file path.</p>
+
+<p><strong>Reserved Words</strong><br>
+Symptom:   </p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">   select count from dfs.drill.`test2.json`;
+   Query failed: SYSTEM ERROR: Failure parsing SQL. Encountered &quot;count from&quot; at line 1, column 8.
+   Was expecting one of:
+       &quot;UNION&quot; ...
+       &quot;INTERSECT&quot; ...
+</code></pre></div>
+<p>Solution: Fix with correct syntax. See <a href="/docs/reserved-keywords/">Reserved Keywords</a>.</p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">   select `count` from dfs.drill.`test2.json`;  
+</code></pre></div>
+<p><strong>Tables not found</strong><br>
+Symptom:</p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">   select * from dfs.drill.test2.json;
+   Query failed: PARSE ERROR: From line 1, column 15 to line 1, column 17: Table &#39;dfs.drill.test2.json&#39; not found  
+</code></pre></div>
+<p>Solutions:</p>
+
+<ol>
+<li>Run SHOW FILES to list the files in the dfs.drill workspace. </li>
+<li>Check the permission of the files with those for the the Drill user.<br></li>
+<li>Verify backticks added for file name: select * from dfs.drill.<code>test2.json</code>;<br></li>
+<li>Drill may not be able to determine the type of file you are trying to read. Try using Drill Default Input Format.<br></li>
+<li>Verify that your storage plugin is correctly configured.</li>
+<li>Verify that Drill can auto-detect your file format.  Drill supports auto-detection for the following formats:<br>
+
+<ul>
+<li>CSV</li>
+<li>TSV</li>
+<li>PSV</li>
+<li>Parquet</li>
+<li>JSON</li>
+</ul></li>
+</ol>
+
+<p><strong>Access nested fields without table name/alias</strong><br>
+Symptom: </p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">   select x.y …  
+   PARSE ERROR: At line 1, column 8: Table &#39;x&#39; not found  
+</code></pre></div>
+<p>Solution: Add table name or alias to the field reference:  </p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">   select t.x.y from t  
+</code></pre></div>
+<p><strong>Unexpected null values for columns in results</strong><br>
+Symptom:  The following type of query returns NULL values:  </p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">   select t.price from t 
+</code></pre></div>
+<p>Solution: Drill is schema-less system. Verify that column names are typed correctly.</p>
+
+<p><strong>Using functions with incorrect data types</strong>  </p>
+
+<p>Symptom: Example  </p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">   select trunc(c3) from t3;
+
+   0: jdbc:drill:schema=dfs&gt; select trunc(c3) from t3;
+   Query failed: SYSTEM ERROR: Failure while trying to materialize incoming schema.  Errors:
+
+   Error in expression at index -1.  Error: Missing function implementation: [trunc(DATE-OPTIONAL)].  Full expression: --UNKNOWN EXPRESSION--..
+
+   Fragment 0:0
+
+   [6e465594-4d83-4042-b88d-50e7eb207484 on atsqa4-133.qa.lab:31010]
+   Error: exception while executing query: Failure while executing query. (state=,code=0)  
+</code></pre></div>
+<p>Solution: Ensure that the function is invoked with the correct data type parameters. In the example above, c3 is an unsupported date type. </p>
+
+<p><strong>Query takes a long time to return</strong> </p>
+
+<p>Symptom: Query takes longer to return than expected.</p>
+
+<p>Solution: Review the <a href="/docs/query-profiles/">query profile</a> and:  </p>
+
+<ul>
+<li>Determine whether progress is being made (look at last update and last change times).</li>
+<li>Look at where Drill is currently spending time and try to optimize those operations.</li>
+<li>Confirm that Drill is taking advantage of the nature of your data, including things like partition pruning and projection pushdown.</li>
+</ul>
+
+<p><strong>Schema changes</strong>  </p>
+
+<p>Symptom:  </p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">   DATA_READ ERROR: Error parsing JSON - You tried to write a XXXX type when you are using a ValueWriter of type XXXX.       
+   File  /src/data/schema.json
+   Record  2
+   Fragment 0:0  
+</code></pre></div>
+<p>Solution: Drill does not fully support schema changes.  In this case, you will need to either ensure that your schemas are the same or only select columns that share schema.</p>
+
+<p><strong>Timestamps and Timezones other than UTC</strong>  </p>
+
+<p>Symptoms: Issues with timestamp and timezone. Illegal instant due to time zone offset transition (America/New_York)</p>
+
+<p>Solution: Convert data to UTC format. You are most likely trying to import date and time data that is encoded one timezone in a different timezone.  Drill’s default behavior is to use the system’s time for converting incoming data.  If you are providing UTC data and your Drillbit nodes do not run with UTC time, you’ll need to run your JVM with the following system property:</p>
+<div class="highlight"><pre><code class="language-text" data-lang="text"> -Duser.timezone=UTC  
+</code></pre></div>
+<p><code>http://www.openkb.info/2015/05/understanding-drills-timestamp-and.html</code>  </p>
+
+<p><strong>Unexpected ODBC issues</strong>  </p>
+
+<p>Symptom: ODBC errors.</p>
+
+<p>Solution: Make sure that the ODBC driver version is compatible with the server version. 
+Turn on ODBC driver debug logging to better understand failure.  </p>
+
+<p><strong>Connectivity issues when connecting via ZooKeeper for JDBC/ODBC</strong>  </p>
+
+<p>Symptom: Client cannot resolve ZooKeeper host names for JDBC/ODBC.</p>
+
+<p>Solution: Ensure that Zookeeper is up and running. Verify that Drill has the correct drill-override.conf settings for the Zookeeper quorum.</p>
+
+<p><strong>Metadata queries take a long time to return</strong>  </p>
+
+<p>Symptom: Running SHOW databases/schemas/tables hangs (in general any information_schema queries hang).</p>
+
+<p>Solution: Disable incorrectly configured storage plugins or start appropriate services. Check compatibility matrix for the appropriate versions.  </p>
+
+<p><strong>Unexpected results due to implicit casting</strong>  </p>
+
+<p>Symptom: rill implicitly casts based on order of precedence.</p>
+
+<p>Solution: Review Drill casting behaviors and explicitly cast for the expected results. See <a href="/docs/handling-different-data-types/">Data Types</a>.</p>
+
+<p><strong>Column alias causes an error</strong>  </p>
+
+<p>Symptom: Drill is not case sensitive, and you can provide any alias for a column name. However, if the storage type is case sensitive, the alias name may conflict and cause errors.</p>
+
+<p>Solution: Verify that the column alias does not conflict with the storage type. See <a href="/docs/lexical-structure/#case-sensitivity">Lexical Structures</a>.  </p>
+
+<p><strong>List (arrays) contains null</strong>  </p>
+
+<p>Symptom: UNSUPPORTED_OPERATION ERROR: Null values are not supported in lists by default. Please set store.json.all_text_mode to true to read lists containing nulls. Be advised that this will treat JSON null values as a string containing the word &#39;null&#39;.</p>
+
+<p>Solution: Change Drill session settings to enable all_text_mode per message.<br>
+Avoid selecting fields that are arrays containing nulls.</p>
+
+<p><strong>SELECT COUNT (*) takes a long time to run</strong>  </p>
+
+<p>Solution: In come cases, the underlying storage format does not have a built-in capability to return a count of records in a table.  In these cases, Drill will do a full scan of the data to verify the number of records.</p>
+
+<p><strong>Tableau issues</strong>  </p>
+
+<p>Symptom: You see a lot of error messages in ODBC trace files or the performance is slow.</p>
+
+<p>Solution: Verify that you have installed the TDC file shipped with the ODBC driver.  </p>
+
+<p><strong>Group by using alias</strong>  </p>
+
+<p>Symptom: Invalid column.</p>
+
+<p>Solution: Not supported. Use column name and/or expression directly.  </p>
+
+<p><strong>Casting a Varchar string to an integer results in an error</strong>  </p>
+
+<p>Symptom: </p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">   SYSTEM ERROR: java.lang.NumberFormatException
+</code></pre></div>
+<p>Solution: Per the ANSI SQL specification CAST to INT does not support empty strings.  If you want to change this behavior, you can set Drill to use the cast empty string to null behavior.  This can be done using the drill.exec.functions.cast_empty_string_to_null SESSION/SYSTEM option. </p>
+
+<p><strong>Unexpected exception during fragment initialization</strong>  </p>
+
+<p>Symptom: The error occurred during the Foreman phase of the query. The error typically occurs due to the following common causes:  </p>
+
+<ul>
+<li>Malformed SQL that passed initial validation but failed upon further analysis</li>
+<li>Extraneous files in query directories do not match the default format type</li>
+</ul>
+
+<p>Solution: Enable the verbose errors option and run the query again to see if further insight is provided.  </p>
+
+<p><strong>Queries running out of memory</strong>  </p>
+
+<p>Symptom: </p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">   RESOURCE ERROR: One or more nodes ran out of memory while executing the query.
+</code></pre></div>
+<p>Solution:  </p>
+
+<ul>
+<li>Increase the amount of direct memory allotted to Drill</li>
+<li>If using CTAS, reduce the planner.width.max_per_node setting</li>
+<li>Reduce the number of concurrent queries running on the cluster using Drill query queues</li>
+<li>Disable hash aggregation and hash sort for your session</li>
+<li>See <a href="/docs/configuration-options-introduction/">Configuration Options</a><br></li>
+</ul>
+
+<p><strong>Unclear Error Message</strong>  </p>
+
+<p>Symptom: Cannot determine issue from error message.</p>
+
+<p>Solution: Turn on verbose errors. </p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">   alter session set `exec.errors.verbose`=true;
+</code></pre></div>
+<p>Determine your currently connected drillbit using select * from sys.drillbits.  Then review logs Drill logs from that drillbit.</p>
+
+<p><strong>SQLLine error starting Drill in embedded mode</strong>  </p>
+
+<p>Symptom:  </p>
+<div class="highlight"><pre><code class="language-text" data-lang="text">   java.net.BindException: Address already in use  
+</code></pre></div>
+<p>Solution:  You can only run one Drillbit per node(embedded or daemon) using default settings.  You need to either change ports used by Drillbit or stop one Drillbit before starting another.</p>
+
+    
+      
+        <div class="doc-nav">
+  
+  <span class="previous-toc"><a href="/docs/custom-function-interfaces/">← Custom Function Interfaces</a></span><span class="next-toc"><a href="/docs/developer-information/">Developer Information →</a></span>
+</div>
+
+    
+    </div>
+  </div>
+</div>
+
+  </div>
+  <p class="push"></p>
+<div id="footer" class="mw">
+<div class="wrapper">
+Copyright © 2012-2014 The Apache Software Foundation, licensed under the Apache License, Version 2.0.<br>
+Apache and the Apache feather logo are trademarks of The Apache Software Foundation. Other names appearing on the site may be trademarks of their respective owners.<br/><br/>
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http://git-wip-us.apache.org/repos/asf/drill-site/blob/9833d32c/docs/tutorials-introduction/index.html
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@@ -70,6 +70,8 @@
       
         <li><a href="/docs/develop-custom-functions/">Develop Custom Functions</a></li>
       
+        <li><a href="/docs/troubleshooting/">Troubleshooting</a></li>
+      
         <li><a href="/docs/developer-information/">Developer Information</a></li>
       
         <li><a href="/docs/release-notes/">Release Notes</a></li>
@@ -82,8 +84,6 @@
       
         <li><a href="/docs/project-bylaws/">Project Bylaws</a></li>
       
-        <li><a href="/docs/log-and-debug/">Log and Debug</a></li>
-      
     </ul>
   </li>
   <li class='nav'>
@@ -150,6 +150,10 @@
             
           
             
+              <li class="toctree-l2"><a class="reference internal" href="/docs/drill-query-execution/">Drill Query Execution</a></li>
+            
+          
+            
               <li class="toctree-l2"><a class="reference internal" href="/docs/core-modules/">Core Modules</a></li>
             
           
@@ -540,11 +544,41 @@
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+            
+              <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>
+            
+          
           </ul>
         
       
         
-          <li class="toctree-l1"><a class="reference internal" href="/docs/log-and-debug/">Log and Debug</a></li>
+          <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>
+            
+          
+          </ul>
         
       
         
@@ -759,6 +793,10 @@
         
       
         
+          <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">
           
@@ -840,6 +878,10 @@
               <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-1-0-0-release-notes/">Apache Drill 1.0.0 Release Notes</a></li>
+            
+          
           </ul>
         
       
@@ -896,29 +938,6 @@
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-          <ul style="display: none">
-          
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-            
-          
-            
-              <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>
-            
-          
-          </ul>
-        
-      
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     </div>

http://git-wip-us.apache.org/repos/asf/drill-site/blob/9833d32c/docs/tutorials/index.html
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@@ -70,6 +70,8 @@
       
         <li><a href="/docs/develop-custom-functions/">Develop Custom Functions</a></li>
       
+        <li><a href="/docs/troubleshooting/">Troubleshooting</a></li>
+      
         <li><a href="/docs/developer-information/">Developer Information</a></li>
       
         <li><a href="/docs/release-notes/">Release Notes</a></li>
@@ -82,8 +84,6 @@
       
         <li><a href="/docs/project-bylaws/">Project Bylaws</a></li>
       
-        <li><a href="/docs/log-and-debug/">Log and Debug</a></li>
-      
     </ul>
   </li>
   <li class='nav'>
@@ -150,6 +150,10 @@
             
           
             
+              <li class="toctree-l2"><a class="reference internal" href="/docs/drill-query-execution/">Drill Query Execution</a></li>
+            
+          
+            
               <li class="toctree-l2"><a class="reference internal" href="/docs/core-modules/">Core Modules</a></li>
             
           
@@ -540,11 +544,41 @@
             </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>
+            
+          
           </ul>
         
       
         
-          <li class="toctree-l1"><a class="reference internal" href="/docs/log-and-debug/">Log and Debug</a></li>
+          <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>
+            
+          
+          </ul>
         
       
         
@@ -759,6 +793,10 @@
         
       
         
+          <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">
           
@@ -840,6 +878,10 @@
               <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-1-0-0-release-notes/">Apache Drill 1.0.0 Release Notes</a></li>
+            
+          
           </ul>
         
       
@@ -896,29 +938,6 @@
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-          <ul style="display: none">
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http://git-wip-us.apache.org/repos/asf/drill-site/blob/9833d32c/docs/use/index.html
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@@ -70,6 +70,8 @@
       
         <li><a href="/docs/develop-custom-functions/">Develop Custom Functions</a></li>
       
+        <li><a href="/docs/troubleshooting/">Troubleshooting</a></li>
+      
         <li><a href="/docs/developer-information/">Developer Information</a></li>
       
         <li><a href="/docs/release-notes/">Release Notes</a></li>
@@ -82,8 +84,6 @@
       
         <li><a href="/docs/project-bylaws/">Project Bylaws</a></li>
       
-        <li><a href="/docs/log-and-debug/">Log and Debug</a></li>
-      
     </ul>
   </li>
   <li class='nav'>
@@ -150,6 +150,10 @@
             
           
             
+              <li class="toctree-l2"><a class="reference internal" href="/docs/drill-query-execution/">Drill Query Execution</a></li>
+            
+          
+            
               <li class="toctree-l2"><a class="reference internal" href="/docs/core-modules/">Core Modules</a></li>
             
           
@@ -540,11 +544,41 @@
             </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>
+            
+          
           </ul>
         
       
         
-          <li class="toctree-l1"><a class="reference internal" href="/docs/log-and-debug/">Log and Debug</a></li>
+          <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>
+            
+          
+          </ul>
         
       
         
@@ -759,6 +793,10 @@
         
       
         
+          <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">
           
@@ -840,6 +878,10 @@
               <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-1-0-0-release-notes/">Apache Drill 1.0.0 Release Notes</a></li>
+            
+          
           </ul>
         
       
@@ -896,29 +938,6 @@
           <li class="toctree-l1"><a class="reference internal" href="/docs/project-bylaws/">Project Bylaws</a></li>
         
       
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-          <ul style="display: none">
-          
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-              <li class="toctree-l2"><a class="reference internal" href="/docs/log-and-debug-introduction/">Log and Debug Introduction</a></li>
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-              <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>
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-          
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-              <li class="toctree-l2"><a class="reference internal" href="/docs/review-the-java-stack-trace/">Review the Java Stack Trace</a></li>
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-          </ul>
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http://git-wip-us.apache.org/repos/asf/drill-site/blob/9833d32c/docs/useful-research/index.html
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@@ -70,6 +70,8 @@
       
         <li><a href="/docs/develop-custom-functions/">Develop Custom Functions</a></li>
       
+        <li><a href="/docs/troubleshooting/">Troubleshooting</a></li>
+      
         <li><a href="/docs/developer-information/">Developer Information</a></li>
       
         <li><a href="/docs/release-notes/">Release Notes</a></li>
@@ -82,8 +84,6 @@
       
         <li><a href="/docs/project-bylaws/">Project Bylaws</a></li>
       
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-      
     </ul>
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   <li class='nav'>
@@ -150,6 +150,10 @@
             
           
             
+              <li class="toctree-l2"><a class="reference internal" href="/docs/drill-query-execution/">Drill Query Execution</a></li>
+            
+          
+            
               <li class="toctree-l2"><a class="reference internal" href="/docs/core-modules/">Core Modules</a></li>
             
           
@@ -540,11 +544,41 @@
             </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>
+            
+          
           </ul>
         
       
         
-          <li class="toctree-l1"><a class="reference internal" href="/docs/log-and-debug/">Log and Debug</a></li>
+          <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>
+            
+          
+          </ul>
         
       
         
@@ -759,6 +793,10 @@
         
       
         
+          <li class="toctree-l1"><a class="reference internal" href="/docs/troubleshooting/">Troubleshooting</a></li>
+        
+      
+        
           <li class="toctree-l1 current_section "><a href="javascript: void(0);">Developer Information</a></li>
           <ul class="current_section">
           
@@ -840,6 +878,10 @@
               <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-1-0-0-release-notes/">Apache Drill 1.0.0 Release Notes</a></li>
+            
+          
           </ul>
         
       
@@ -896,29 +938,6 @@
           <li class="toctree-l1"><a class="reference internal" href="/docs/project-bylaws/">Project Bylaws</a></li>
         
       
-        
-          <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>
-            
-          
-          </ul>
-        
-      
       </ul>
 
     </div>

http://git-wip-us.apache.org/repos/asf/drill-site/blob/9833d32c/docs/using-a-connection-string/index.html
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diff --git a/docs/using-a-connection-string/index.html b/docs/using-a-connection-string/index.html
index b6273e3..febcbd9 100644
--- a/docs/using-a-connection-string/index.html
+++ b/docs/using-a-connection-string/index.html
@@ -70,6 +70,8 @@
       
         <li><a href="/docs/develop-custom-functions/">Develop Custom Functions</a></li>
       
+        <li><a href="/docs/troubleshooting/">Troubleshooting</a></li>
+      
         <li><a href="/docs/developer-information/">Developer Information</a></li>
       
         <li><a href="/docs/release-notes/">Release Notes</a></li>
@@ -82,8 +84,6 @@
       
         <li><a href="/docs/project-bylaws/">Project Bylaws</a></li>
       
-        <li><a href="/docs/log-and-debug/">Log and Debug</a></li>
-      
     </ul>
   </li>
   <li class='nav'>
@@ -150,6 +150,10 @@
             
           
             
+              <li class="toctree-l2"><a class="reference internal" href="/docs/drill-query-execution/">Drill Query Execution</a></li>
+            
+          
+            
               <li class="toctree-l2"><a class="reference internal" href="/docs/core-modules/">Core Modules</a></li>
             
           
@@ -540,11 +544,41 @@
             </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>
+            
+          
           </ul>
         
       
         
-          <li class="toctree-l1"><a class="reference internal" href="/docs/log-and-debug/">Log and Debug</a></li>
+          <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>
+            
+          
+          </ul>
         
       
         
@@ -759,6 +793,10 @@
         
       
         
+          <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">
           
@@ -840,6 +878,10 @@
               <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-1-0-0-release-notes/">Apache Drill 1.0.0 Release Notes</a></li>
+            
+          
           </ul>
         
       
@@ -896,29 +938,6 @@
           <li class="toctree-l1"><a class="reference internal" href="/docs/project-bylaws/">Project Bylaws</a></li>
         
       
-        
-          <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>
-            
-          
-          </ul>
-        
-      
       </ul>
 
     </div>

http://git-wip-us.apache.org/repos/asf/drill-site/blob/9833d32c/docs/using-apache-drill-with-tableau-9-desktop/index.html
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diff --git a/docs/using-apache-drill-with-tableau-9-desktop/index.html b/docs/using-apache-drill-with-tableau-9-desktop/index.html
index 1b72e7e..22c1511 100644
--- a/docs/using-apache-drill-with-tableau-9-desktop/index.html
+++ b/docs/using-apache-drill-with-tableau-9-desktop/index.html
@@ -70,6 +70,8 @@
       
         <li><a href="/docs/develop-custom-functions/">Develop Custom Functions</a></li>
       
+        <li><a href="/docs/troubleshooting/">Troubleshooting</a></li>
+      
         <li><a href="/docs/developer-information/">Developer Information</a></li>
       
         <li><a href="/docs/release-notes/">Release Notes</a></li>
@@ -82,8 +84,6 @@
       
         <li><a href="/docs/project-bylaws/">Project Bylaws</a></li>
       
-        <li><a href="/docs/log-and-debug/">Log and Debug</a></li>
-      
     </ul>
   </li>
   <li class='nav'>
@@ -150,6 +150,10 @@
             
           
             
+              <li class="toctree-l2"><a class="reference internal" href="/docs/drill-query-execution/">Drill Query Execution</a></li>
+            
+          
+            
               <li class="toctree-l2"><a class="reference internal" href="/docs/core-modules/">Core Modules</a></li>
             
           
@@ -540,11 +544,41 @@
             </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>
+            
+          
           </ul>
         
       
         
-          <li class="toctree-l1"><a class="reference internal" href="/docs/log-and-debug/">Log and Debug</a></li>
+          <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>
+            
+          
+          </ul>
         
       
         
@@ -759,6 +793,10 @@
         
       
         
+          <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">
           
@@ -840,6 +878,10 @@
               <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-1-0-0-release-notes/">Apache Drill 1.0.0 Release Notes</a></li>
+            
+          
           </ul>
         
       
@@ -896,29 +938,6 @@
           <li class="toctree-l1"><a class="reference internal" href="/docs/project-bylaws/">Project Bylaws</a></li>
         
       
-        
-          <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>
-            
-          
-          </ul>
-        
-      
       </ul>
 
     </div>


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