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| <li class="toctree-l2"><a class="reference internal" href="/docs/configure-drill-introduction/">Configure Drill Introduction</a></li> |
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| <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-drill-memory/">Configuring Drill Memory</a></li> |
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| <li class="toctree-l2"><a href="javascript: void(0);">Securing Drill</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/securing-drill-introduction/">Securing Drill Introduction</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/secure-communication-paths/">Secure Communication Paths</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/roles-and-privileges/">Roles and Privileges</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-user-impersonation/">Configuring User Impersonation</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-inbound-impersonation/">Configuring Inbound Impersonation</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-user-impersonation-with-hive-authorization/">Configuring User Impersonation with Hive Authorization</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-user-security/">Configuring User Security</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-plain-security/">Configuring Plain Security</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-ssl-tls-for-encryption/">Configuring SSL/TLS for Encryption</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/using-libpam4j-as-the-pam-authenticator/">Using libpam4j as the PAM Authenticator</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/using-jpam-as-the-pam-authenticator/">Using jpam as the PAM Authenticator</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-htpasswd-file-authentication/">Configuring htpasswd file authentication</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-hashicorp-vault-authentication/">Configuring HashiCorp Vault authentication</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-kerberos-security/">Configuring Kerberos Security</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-drill-to-use-spnego-for-http-authentication/">Configuring Drill to use SPNEGO for HTTP Authentication</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-web-ui-and-rest-api-security/">Configuring Web UI and REST API Security</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-custom-acls-to-secure-znodes/">Configuring Custom ACLs to Secure znodes</a></li> |
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| </ul> |
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| <li class="toctree-l2"><a href="javascript: void(0);">Configuring a Multitenant Cluster</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-a-multitenant-cluster-introduction/">Configuring a Multitenant Cluster Introduction</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-multitenant-resources/">Configuring Multitenant Resources</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-resources-for-a-shared-drillbit/">Configuring Resources for a Shared Drillbit</a></li> |
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| <li class="toctree-l2"><a href="javascript: void(0);">Configuration Options</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/configuration-options-introduction/">Configuration Options Introduction</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/start-up-options/">Start-Up Options</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/planning-and-execution-options/">Planning and Execution Options</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/persistent-configuration-storage/">Persistent Configuration Storage</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/global-query-list/">Global Query List</a></li> |
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| </ul> |
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| <li class="toctree-l2"><a class="reference internal" href="/docs/ports-and-bind-addresses-used-by-drill/">Ports and Bind Addresses Used by Drill</a></li> |
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| <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-the-drill-shell/">Configuring the Drill Shell</a></li> |
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| <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-cgroups-to-control-cpu-usage/">Configuring cgroups to Control CPU Usage</a></li> |
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| </ul> |
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| <li class="toctree-l1 current_section "><a href="javascript: void(0);">Connect a Data Source</a></li> |
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| <li class="toctree-l2"><a class="reference internal" href="/docs/connect-a-data-source-introduction/">Connect a Data Source Introduction</a></li> |
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| <li class="toctree-l2"><a class="reference internal" href="/docs/storage-plugin-registration/">Storage Plugin Registration</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/plugin-configuration-basics/">Plugin Configuration Basics</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-storage-plugins/">Configuring Storage Plugins</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/storage-plugin-authentication-modes/">Storage plugin authentication modes</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/workspaces/">Workspaces</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/drill-default-input-format/">Drill Default Input Format</a></li> |
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| <li class="toctree-l2"><a class="reference internal" href="/docs/file-system-storage-plugin/">File System Storage Plugin</a></li> |
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| <li class="toctree-l2"><a class="reference internal" href="/docs/oci-os-storage-plugin/">OCI OS Storage Plugin</a></li> |
| |
| |
| |
| <li class="toctree-l2"><a class="reference internal" href="/docs/opentsdb-storage-plugin/">OpenTSDB Storage Plugin</a></li> |
| |
| |
| |
| <li class="toctree-l2 current"><a class="reference internal" href="/docs/kafka-storage-plugin/">Kafka Storage Plugin</a></li> |
| |
| |
| |
| <li class="toctree-l2"><a class="reference internal" href="/docs/azure-blob-storage-plugin/">Azure Blob Storage Plugin</a></li> |
| |
| |
| |
| <li class="toctree-l2"><a class="reference internal" href="/docs/druid-storage-plugin/">Druid Storage Plugin</a></li> |
| |
| |
| |
| <li class="toctree-l2"><a class="reference internal" href="/docs/http-storage-plugin/">HTTP Storage Plugin</a></li> |
| |
| |
| |
| <li class="toctree-l2"><a class="reference internal" href="/docs/elasticsearch-storage-plugin/">ElasticSearch Storage Plugin</a></li> |
| |
| |
| |
| <li class="toctree-l2"><a class="reference internal" href="/docs/splunk-storage-plugin/">Splunk Storage Plugin</a></li> |
| |
| |
| |
| <li class="toctree-l2"><a class="reference internal" href="/docs/cassandra-storage-plugin/">Cassandra Storage Plugin</a></li> |
| |
| |
| |
| <li class="toctree-l2"><a class="reference internal" href="/docs/dropbox-storage-plugin/">Dropbox Storage Plugin</a></li> |
| |
| |
| |
| <li class="toctree-l2"><a class="reference internal" href="/docs/google-sheets-storage-plugin/">Google Sheets 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> |
| |
| </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/logging-and-tracing/">Logging and Tracing</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-10-2/">Using Apache Drill with Tableau 10.2</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 href="javascript: void(0);">Querying Indexes</a></li> |
| <ul style="display: none"> |
| |
| <li class="toctree-l3"><a class="reference internal" href="/docs/querying-indexes-introduction/">Querying Indexes Introduction</a></li> |
| |
| <li class="toctree-l3"><a class="reference internal" href="/docs/queries-that-qualify-for-index-based-query-plans/">Queries that Qualify for Index-Based Query Plans</a></li> |
| |
| <li class="toctree-l3"><a class="reference internal" href="/docs/types-of-indexes/">Types of Indexes</a></li> |
| |
| <li class="toctree-l3"><a class="reference internal" href="/docs/index-selection/">Index Selection</a></li> |
| |
| <li class="toctree-l3"><a class="reference internal" href="/docs/designing-indexes-for-your-queries/">Designing Indexes for Your Queries</a></li> |
| |
| <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-index-planning/">Configuring Index Planning</a></li> |
| |
| <li class="toctree-l3"><a class="reference internal" href="/docs/verifying-index-use/">Verifying Index Use</a></li> |
| |
| </ul> |
| |
| |
| |
| <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 href="javascript: void(0);">Drill Metastore</a></li> |
| <ul style="display: none"> |
| |
| <li class="toctree-l3"><a class="reference internal" href="/docs/using-drill-metastore/">Using Drill Metastore</a></li> |
| |
| <li class="toctree-l3"><a class="reference internal" href="/docs/drill-iceberg-metastore/">Drill Iceberg Metastore</a></li> |
| |
| <li class="toctree-l3"><a class="reference internal" href="/docs/rdbms-metastore/">RDBMS Metastore</a></li> |
| |
| <li class="toctree-l3"><a class="reference internal" href="/docs/mongo-metastore/">Mongo Metastore</a></li> |
| |
| </ul> |
| |
| |
| |
| <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/throttling/">Throttling</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/statistical/">Statistical</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/data-type-functions/">Data Type Functions</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> |
| |
| <li class="toctree-l3"><a class="reference internal" href="/docs/phonetic-functions/">Phonetic Functions</a></li> |
| |
| <li class="toctree-l3"><a class="reference internal" href="/docs/string-distance-functions/">String Distance Functions</a></li> |
| |
| <li class="toctree-l3"><a class="reference internal" href="/docs/cryptography-functions/">Cryptography Functions</a></li> |
| |
| <li class="toctree-l3"><a class="reference internal" href="/docs/sql-dialect-compatibility-functions/">SQL dialect compatibility functions</a></li> |
| |
| <li class="toctree-l3"><a class="reference internal" href="/docs/gis-functions/">GIS functions</a></li> |
| |
| <li class="toctree-l3"><a class="reference internal" href="/docs/time-series-analysis-functions/">Time Series Analysis Functions</a></li> |
| |
| <li class="toctree-l3"><a class="reference internal" href="/docs/ip-networking-functions/">IP Networking functions</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> |
| |
| <li class="toctree-l3"><a class="reference internal" href="/docs/list-creation-functions/">COLLECT_LIST</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/analyze-table-refresh-metadata/">ANALYZE TABLE REFRESH METADATA</a></li> |
| |
| <li class="toctree-l3"><a class="reference internal" href="/docs/analyze-table-compute-statistics/">ANALYZE TABLE COMPUTE STATISTICS</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/refresh-table-metadata/">REFRESH TABLE METADATA</a></li> |
| |
| <li class="toctree-l3"><a class="reference internal" href="/docs/reset/">RESET</a></li> |
| |
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| <li class="toctree-l1"><a href="javascript: void(0);">Develop Custom Functions</a></li> |
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| <li class="toctree-l2"><a class="reference internal" href="/docs/develop-custom-functions-introduction/">Develop Custom Functions Introduction</a></li> |
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| <li class="toctree-l2"><a href="javascript: void(0);">Adding Custom Functions to Drill</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/adding-custom-functions-to-drill-introduction/">Adding Custom Functions to Drill Introduction</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/manually-adding-custom-functions-to-drill/">Manually Adding Custom Functions to Drill</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/creating-custom-authenticators/">Creating Custom Authenticators</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/dynamic-udfs/">Dynamic UDFs</a></li> |
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| </ul> |
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| <li class="toctree-l2"><a class="reference internal" href="/docs/using-custom-functions-in-queries/">Using Custom Functions in Queries</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/submitting-queries-from-the-rest-api-when-impersonation-is-enabled-and-authentication-is-disabled/">Submitting Queries from the REST API when Impersonation is Enabled and Authentication is Disabled</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/use-postman-to-run-sql-queries-on-drill-data-sources/">Use Postman to Run SQL Queries on Drill Data Sources</a></li> |
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| </ul> |
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| <li class="toctree-l2"><a href="javascript: void(0);">Develop Drill</a></li> |
| <ul style="display: none"> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/compiling-drill-from-source/">Compiling Drill from Source</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/useful-information-for-drill-developers/">Useful Information for Drill Developers</a></li> |
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| </ul> |
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| <li class="toctree-l2"><a href="javascript: void(0);">Contribute to Drill</a></li> |
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| <li class="toctree-l3"><a class="reference internal" href="/docs/apache-drill-contribution-guidelines/">Apache Drill Contribution Guidelines</a></li> |
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| <li><a href="/docs/connect-a-data-source/">Connect a Data Source</a></li> |
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| <li>Kafka Storage Plugin</li> |
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| <a class="edit-link" href="https://github.com/apache/drill-site/blob/master/_docs/en/connect-a-data-source/plugins/113-kafka-storage-plugin.md" target="_blank"><i class="fa fa-pencil-square-o"></i></a> |
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| <div class="int_title left"> |
| <h1>Kafka Storage Plugin</h1> |
| |
| </div> |
| |
| <!-- jt: we don't need to display a last-modified date on each page to users |
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| --> |
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| <div class="int_text" align="left"> |
| |
| <p>As of Drill 1.12, Drill provides a storage plugin for Kafka. The Kafka storage plugin enables you to run SQL queries on Apache Kafka and perform interactive analysis on the data. When you install Drill, a preconfigured Kafka storage plugin is available on the Storage page in the Drill Web UI. Once you enable and configure the storage plugin, you can query Kafka from Drill.</p> |
| |
| <p>The following sections provide information about the Kafka storage plugin, how to enable and configure the Kafka storage plugin in Drill, options that you can set at the system or session level, and example queries on a Kafka data source. You can refer to the <a href="https://github.com/apache/drill/tree/master/contrib/storage-kafka#drill-kafka-plugin">README</a> and <a href="https://kafka.apache.org/">Apache Kafka</a> for additional information.</p> |
| |
| <h2 id="kafka-support">Kafka Support</h2> |
| |
| <p>Currently, the Kafka storage plugin supports:</p> |
| |
| <ul> |
| <li>Kafka-0.10 and above</li> |
| <li>Reading Kafka messages of type JSON only</li> |
| <li>The following message reader to read the Kafka messages:</li> |
| </ul> |
| |
| <table> |
| <thead> |
| <tr> |
| <th><strong>MessageReader</strong></th> |
| <th><strong>Description</strong></th> |
| <th><strong>Key DeSerializer</strong></th> |
| <th><strong>Value DeSerializer</strong></th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td>JsonMessageReader</td> |
| <td>To read Json messages</td> |
| <td>org.apache.kafka.common.serialization.ByteArrayDeserializer</td> |
| <td>org.apache.kafka.common.serialization.ByteArrayDeserializer</td> |
| </tr> |
| </tbody> |
| </table> |
| |
| <h2 id="about-the-kafka-storage-plugin">About the Kafka Storage Plugin</h2> |
| |
| <p>In Drill, each Kafka topic is mapped to an SQL table. When run a query on a table, the query scans all the messages from the earliest offset to the latest offset of that topic at that point in time. The Kafka storage plugin automatically discovers all the topics (tables), so you can perform analysis without executing DDL statements.</p> |
| |
| <p>The Kafka storage plugin also fetches the following metadata for each message:</p> |
| |
| <ul> |
| <li>kafkaTopic</li> |
| <li>kafkaPartitionId</li> |
| <li>kafkaMsgOffset</li> |
| <li>kafkaMsgTimestamp</li> |
| <li>kafkaMsgKey, unless it is not null</li> |
| </ul> |
| |
| <p>The following examples show Kafka topics and message offsets:</p> |
| |
| <div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code> $bin/kafka-topics --list --zookeeper localhost:2181 |
| clicks |
| clickstream |
| clickstream-json-demo |
| |
| $ bin/kafka-console-consumer --bootstrap-server localhost:9092 --topic clickstream-json-demo --from-beginning | more |
| {"userID":"055e9af4-8c3c-4834-8482-8e05367a7bef","sessionID":"7badf08e-1e1d-4aeb-b853-7df2df4431ac","pageName":"shoes","refferalUrl":"yelp","ipAddress":"20.44.183.126","userAgent":"Mozilla/5.0 (iPhone; CPU iPhone OS 10_3_1 like Mac OS X) AppleWebKit/603.1.30 (KHTML, like Gecko) Version/10.0 Mobile/14E304 Safari/602.1","client_ts":1509926023099} |
| {"userID":"a29454b3-642d-481e-9dd8-0e0d7ef32ef5","sessionID":"b4a89204-b98c-4b4b-a1a9-f28f22d5ead3","pageName":"books","refferalUrl":"yelp","ipAddress":"252.252.113.190","userAgent":"Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.106 Safari/537.36 OPR/38.0.2220.41","client_ts":1509926023100} |
| {"userID":"8c53b1c6-da47-4b5a-989d-61b5594f3a1d","sessionID":"baae3a1d-25b2-4955-8d07-20191f29ab32","pageName":"login","refferalUrl":"yelp","ipAddress":"110.170.214.255","userAgent":"Mozilla/5.0 (Macintosh; Intel Mac OS X x.y; rv:42.0) Gecko/20100101 Firefox/42.0","client_ts":1509926023100} |
| |
| $ bin/kafka-run-class kafka.tools.GetOffsetShell --broker-list localhost:9092 --topic clickstream-json-demo --time -2 |
| clickstream-json-demo:2:2765000 |
| clickstream-json-demo:1:2765000 |
| clickstream-json-demo:3:2765000 |
| clickstream-json-demo:0:2765000 |
| |
| $ bin/kafka-run-class kafka.tools.GetOffsetShell --broker-list localhost:9092 --topic clickstream-json-demo --time -1 |
| clickstream-json-demo:2:2765245 |
| clickstream-json-demo:1:2765245 |
| clickstream-json-demo:3:2765245 |
| clickstream-json-demo:0:2765245 |
| </code></pre></div></div> |
| |
| <h2 id="filter-pushdown-support">Filter Pushdown Support</h2> |
| |
| <p>Pushing down filters to the Kafka data source reduces the number of messages that Drill scans and significantly decrease query time. Prior to Drill 1.14, Drill scanned all of the data in a topic before applying filters. Starting in Drill 1.14, Drill transforms the filter conditions on metadata fields to limit the range of offsets scanned from the topic.</p> |
| |
| <p>The Drill kafka storage plugin supports filter pushdown for query conditions on the following Kafka metadata fields in messages:</p> |
| |
| <ul> |
| <li> |
| <p><strong>kafkaPartitionId</strong> |
| Conditions on the kafkaPartitionId metadata field limit the number of partitions that Drill scans, which is useful for data exploration. |
| Drill can push down filters when a query contains the following conditions on the kafkaPartitionId metadata field: |
| =, >, >=, <, <=</p> |
| </li> |
| <li> |
| <p><strong>kafkaMsgOffset</strong> |
| Drill can push down filters when a query contains the following conditions on the kafkaMsgOffset metadata field: |
| =, >, >=, <, <=</p> |
| </li> |
| <li> |
| <p><strong>kafkaMsgTimestamp</strong> |
| The kafkaMsgTimestamp field maps to the timestamp stored for each Kafka message. Drill can push down filters when a query contains the following conditions on the kafkaMsgTimestamp metadata field: |
| =, >, >=</p> |
| </li> |
| </ul> |
| |
| <p>Kafka exposes the following <a href="https://kafka.apache.org/11/javadoc/org/apache/kafka/clients/consumer/MockConsumer.html">Consumer API</a> to obtain the earliest offset for a given timestamp value:</p> |
| |
| <div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code> public java.util.Map<TopicPartition,OffsetAndTimestamp> offsetsForTimes(java.util.Map<TopicPartition,java.lang.Long> timestampsToSearch) |
| </code></pre></div></div> |
| |
| <p>This API is used to determine the startOffset for each partition in a topic. Note that the timestamps may not appear in increasing order when reading from a Kafka topic if you have defined the timestamp for a message. However, the API returns the first offset (from the beginning of a topic partition) where the timestamp is greater or equal to the timestamp requested. Therefore, Drill does not support pushdown on < or <= because an earlier timestamp may exist beyond endOffsetcomputed.</p> |
| |
| <h2 id="enabling-and-configuring-the-kafka-storage-plugin">Enabling and Configuring the Kafka Storage Plugin</h2> |
| |
| <p>Enable the Kafka storage plugin on the Storage page of the Drill Web UI and then edit the configuration as needed.</p> |
| |
| <p>The Kafka storage plugin configuration contains the <code class="language-plaintext highlighter-rouge">kafkaConsumerProps</code> property which supports typical Kafka consumer properties, as described in <a href="https://kafka.apache.org/documentation/#consumerconfigs">Kafka Consumer Configs</a>.</p> |
| |
| <p>To enable the Kafka storage plugin, enter the following URL in the address bar of your browser to access the Storage page in the Drill Web UI:</p> |
| |
| <div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code> http://<drill-node-ip-address>:8047/storage/ |
| </code></pre></div></div> |
| |
| <p>In the Disabled Storage Plugins section, click <strong>Enable</strong> next to Kafka. Kafka moves to the Enabled Storage Plugins section. Click <strong>Update</strong> to see the default configuration. Modify the configuration, as needed, click <strong>Update</strong> again to save the changes. Click <strong>Back</strong> to return to the Storage page.</p> |
| |
| <p>The following configuration is an example Kafka storage plugin configuration:</p> |
| |
| <div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code> { |
| "type": "kafka", |
| "kafkaConsumerProps": { |
| "key.deserializer": "org.apache.kafka.common.serialization.ByteArrayDeserializer", |
| "auto.offset.reset": "earliest", |
| "bootstrap.servers": "localhost:9092", |
| "group.id": "drill-query-consumer-1", |
| "enable.auto.commit": "true", |
| "value.deserializer": "org.apache.kafka.common.serialization.ByteArrayDeserializer", |
| "session.timeout.ms": "30000" |
| }, |
| "enabled": true |
| } |
| </code></pre></div></div> |
| |
| <h2 id="systemsession-options">System|Session Options</h2> |
| |
| <table> |
| <tbody> |
| <tr> |
| <td>You can modify the following options in Drill at the system or session level using the <a href="/docs/alter-system/">ALTER SYSTEM</a></td> |
| <td><a href="/docs/set/">SESSION SET</a> commands:</td> |
| </tr> |
| </tbody> |
| </table> |
| |
| <table> |
| <thead> |
| <tr> |
| <th>Option</th> |
| <th>Description</th> |
| <th>Example</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td>store.kafka.record.reader</td> |
| <td>Message Reader implementation to use while reading messages from Kafka. Default value is set to org.apache.drill.exec.store.kafka.decoders.JsonMessageReader. You can implement a custom record reader by extending org.apache.drill.exec.store.kafka.decoders.MessageReader and setting store.kafka.record.reader accordinlgy.</td> |
| <td>ALTER SESSION SET <code class="language-plaintext highlighter-rouge">store.kafka.record.reader</code> = ‘org.apache.drill.exec.store.kafka.decoders.JsonMessageReader’;</td> |
| </tr> |
| <tr> |
| <td>store.kafka.poll.timeout</td> |
| <td>Polling timeout used by Kafka client while fetching messages from Kafka cluster. Default value is 200 milliseconds.</td> |
| <td>ALTER SESSION SET <code class="language-plaintext highlighter-rouge">store.kafka.poll.timeout</code> = 200;</td> |
| </tr> |
| <tr> |
| <td>exec.enable_union_type</td> |
| <td>Enable support for JSON union type. Default is false.</td> |
| <td>ALTER SESSION SET <code class="language-plaintext highlighter-rouge">exec.enable_union_type</code> = true;</td> |
| </tr> |
| <tr> |
| <td>store.kafka.all_text_mode</td> |
| <td>Reads all data from JSON files as VARCHAR. Default is false.</td> |
| <td>ALTER SESSION SET <code class="language-plaintext highlighter-rouge">store.kafka.all_text_mode</code> = true;</td> |
| </tr> |
| <tr> |
| <td>store.kafka.read_numbers_as_double</td> |
| <td>Reads numbers from JSON files with or without a decimal point as DOUBLE. Default is false.</td> |
| <td>ALTER SESSION SET <code class="language-plaintext highlighter-rouge">store.kafka.read_numbers_as_double</code> = true;</td> |
| </tr> |
| </tbody> |
| </table> |
| |
| <p>See <a href="https://drill.apache.org/docs/json-data-model/">Drill JSON Model</a> and <a href="https://drill.apache.org/docs/configuration-options-introduction/">Drill system options configuration</a>s for more information.</p> |
| |
| <h2 id="examples-of-drill-queries-on-kafka">Examples of Drill Queries on Kafka</h2> |
| |
| <p>The following examples show queries on Kafka and the use of the ALTER SESSION SET command to change Kafka related options at the session level:</p> |
| |
| <div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code> $ bin/sqlline -u jdbc:drill:zk=localhost:2181 |
| Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=512M; support was removed in 8.0 |
| apache drill 1.12.0-SNAPSHOT |
| "json ain't no thang" |
| |
| |
| 0: jdbc:drill:zk=localhost:2181> use kafka; |
| |-------|------------------------------------| |
| | ok | summary | |
| |-------|------------------------------------| |
| | true | Default schema changed to [kafka] | |
| |-------|------------------------------------| |
| 1 row selected (0.564 seconds) |
| |
| 0: jdbc:drill:zk=localhost:2181> show tables; |
| |---------------|------------------------------| |
| | TABLE_SCHEMA | TABLE_NAME | |
| |---------------|------------------------------| |
| | kafka | clickstream-json-demo | |
| | kafka | clickstream | |
| | kafka | clicks | |
| |---------------|------------------------------| |
| 17 rows selected (1.908 seconds) |
| |
| 0: jdbc:drill:zk=localhost:2181> ALTER SESSION SET `store.kafka.poll.timeout` = 200; |
| |-------|------------------------------------| |
| | ok | summary | |
| |-------|------------------------------------| |
| | true | store.kafka.poll.timeout updated. | |
| |-------|------------------------------------| |
| 1 row selected (0.102 seconds) |
| 0: jdbc:drill:zk=localhost:2181> ALTER SESSION SET `store.kafka.record.reader` = 'org.apache.drill.exec.store.kafka.decoders.JsonMessageReader'; |
| |-------|-------------------------------------| |
| | ok | summary | |
| |-------|-------------------------------------| |
| | true | store.kafka.record.reader updated. | |
| |-------|-------------------------------------| |
| 1 row selected (0.082 seconds) |
| |
| 0: jdbc:drill:zk=localhost:2181> select * from kafka.`clickstream-json-demo` limit 2; |
| |---------------------------------------|---------------------------------------|-------------|--------------|------------------|-----------------------------------------------------------------------------------|----------------|------------------------|-------------------|-----------------|--------------------| |
| | userID | sessionID | pageName | refferalUrl | ipAddress | userAgent | client_ts | kafkaTopic | kafkaPartitionId | kafkaMsgOffset | kafkaMsgTimestamp | |
| |---------------------------------------|---------------------------------------|-------------|--------------|------------------|-----------------------------------------------------------------------------------|----------------|------------------------|-------------------|-----------------|--------------------| |
| | 6b55a8fa-d0fd-41f0-94e3-7f6b551cdede | e3bd34a8-b546-4cd5-a0c6-5438589839fc | categories | bing | 198.105.119.221 | Mozilla/5.0 (Macintosh; Intel Mac OS X x.y; rv:42.0) Gecko/20100101 Firefox/42.0 | 1509926023098 | clickstream-json-demo | 2 | 2765000 | 1509926023098 | |
| | 74cffc37-2df0-4db4-aff9-ed0027a12d03 | 339e3821-5254-4d79-bbae-69bc12808eca | furniture | bing | 161.169.50.60 | Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:47.0) Gecko/20100101 Firefox/47.0 | 1509926023099 | clickstream-json-demo | 2 | 2765001 | 1509926023099 | |
| |---------------------------------------|---------------------------------------|-------------|--------------|------------------|-----------------------------------------------------------------------------------|----------------|------------------------|-------------------|-----------------|--------------------| |
| 2 rows selected (1.18 seconds) |
| |
| 0: jdbc:drill:zk=localhost:2181> select count(*) from kafka.`clickstream-json-demo`; |
| |---------| |
| | EXPR$0 | |
| |---------| |
| | 980 | |
| |---------| |
| 1 row selected (0.732 seconds) |
| |
| 0: jdbc:drill:zk=localhost:2181> select kafkaPartitionId, MIN(kafkaMsgOffset) as minOffset, MAX(kafkaMsgOffset) as maxOffset from kafka.`clickstream-json-demo` group by kafkaPartitionId; |
| |-------------------|------------|------------| |
| | kafkaPartitionId | minOffset | maxOffset | |
| |-------------------|------------|------------| |
| | 2 | 2765000 | 2765244 | |
| | 1 | 2765000 | 2765244 | |
| | 3 | 2765000 | 2765244 | |
| | 0 | 2765000 | 2765244 | |
| |-------------------|------------|------------| |
| 4 rows selected (3.081 seconds) |
| |
| 0: jdbc:drill:zk=localhost:2181> select kafkaPartitionId, from_unixtime(MIN(kafkaMsgTimestamp)/1000) as minKafkaTS, from_unixtime(MAX(kafkaMsgTimestamp)/1000) as maxKafkaTs from kafka.`clickstream-json-demo` group by kafkaPartitionId; |
| |-------------------|----------------------|----------------------| |
| | kafkaPartitionId | minKafkaTS | maxKafkaTs | |
| |-------------------|----------------------|----------------------| |
| | 2 | 2017-11-05 15:53:43 | 2017-11-05 15:53:43 | |
| | 1 | 2017-11-05 15:53:43 | 2017-11-05 15:53:43 | |
| | 3 | 2017-11-05 15:53:43 | 2017-11-05 15:53:43 | |
| | 0 | 2017-11-05 15:53:43 | 2017-11-05 15:53:43 | |
| |-------------------|----------------------|----------------------| |
| 4 rows selected (2.758 seconds) |
| |
| 0: jdbc:drill:zk=localhost:2181> select distinct(refferalUrl) from kafka.`clickstream-json-demo`; |
| |--------------| |
| | refferalUrl | |
| |--------------| |
| | bing | |
| | yahoo | |
| | yelp | |
| | google | |
| |--------------| |
| 4 rows selected (2.944 seconds) |
| |
| 0: jdbc:drill:zk=localhost:2181> select pageName, count(*) from kafka.`clickstream-json-demo` group by pageName; |
| |--------------|---------| |
| | pageName | EXPR$1 | |
| |--------------|---------| |
| | categories | 89 | |
| | furniture | 89 | |
| | mobiles | 89 | |
| | clothing | 89 | |
| | sports | 89 | |
| | offers | 89 | |
| | shoes | 89 | |
| | books | 89 | |
| | login | 90 | |
| | electronics | 89 | |
| | toys | 89 | |
| |--------------|---------| |
| 11 rows selected (2.493 seconds) |
| </code></pre></div></div> |
| |
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