http://git-wip-us.apache.org/repos/asf/drill-site/blob/b38c239a/docs/configuring-a-multitenant-cluster-introduction/index.html ---------------------------------------------------------------------- diff --git a/docs/configuring-a-multitenant-cluster-introduction/index.html b/docs/configuring-a-multitenant-cluster-introduction/index.html index 2d29c49..78c0149 100644 --- a/docs/configuring-a-multitenant-cluster-introduction/index.html +++ b/docs/configuring-a-multitenant-cluster-introduction/index.html @@ -265,10 +265,6 @@ <li class="toctree-l2"><a class="reference internal" href="/docs/appendix-d-recreate-the-drill-archive/">Appendix D: Recreate the Drill Archive</a></li> - - <li class="toctree-l2"><a class="reference internal" href="/docs/appendix-e-using-cgroups-to-control-cpu-usage/">Appendix E: Using cgroups to Control CPU Usage</a></li> - - </ul> @@ -404,6 +400,10 @@ <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-the-drill-shell/">Configuring the Drill Shell</a></li> + + <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-cgroups-to-control-cpu-usage/">Configuring cgroups to Control CPU Usage</a></li> + + </ul>
http://git-wip-us.apache.org/repos/asf/drill-site/blob/b38c239a/docs/configuring-a-multitenant-cluster/index.html ---------------------------------------------------------------------- diff --git a/docs/configuring-a-multitenant-cluster/index.html b/docs/configuring-a-multitenant-cluster/index.html index 54d4449..34c12b3 100644 --- a/docs/configuring-a-multitenant-cluster/index.html +++ b/docs/configuring-a-multitenant-cluster/index.html @@ -265,10 +265,6 @@ <li class="toctree-l2"><a class="reference internal" href="/docs/appendix-d-recreate-the-drill-archive/">Appendix D: Recreate the Drill Archive</a></li> - - <li class="toctree-l2"><a class="reference internal" href="/docs/appendix-e-using-cgroups-to-control-cpu-usage/">Appendix E: Using cgroups to Control CPU Usage</a></li> - - </ul> @@ -404,6 +400,10 @@ <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-the-drill-shell/">Configuring the Drill Shell</a></li> + + <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-cgroups-to-control-cpu-usage/">Configuring cgroups to Control CPU Usage</a></li> + + </ul> http://git-wip-us.apache.org/repos/asf/drill-site/blob/b38c239a/docs/configuring-cgroups-to-control-cpu-usage/index.html ---------------------------------------------------------------------- diff --git a/docs/configuring-cgroups-to-control-cpu-usage/index.html b/docs/configuring-cgroups-to-control-cpu-usage/index.html new file mode 100644 index 0000000..395f6aa --- /dev/null +++ b/docs/configuring-cgroups-to-control-cpu-usage/index.html @@ -0,0 +1,1331 @@ +<!DOCTYPE html> +<html> + +<head> + +<meta charset="UTF-8"> +<meta name=viewport content="width=device-width, initial-scale=1"> + + +<title>Configuring cgroups to Control CPU Usage - Apache Drill</title> + +<link href="//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css" rel="stylesheet" type="text/css"/> +<link href='//fonts.googleapis.com/css?family=PT+Sans' rel='stylesheet' 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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> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/analyzing-data-using-window-functions/">Analyzing Data Using Window Functions</a></li> + + + </ul> + + + + <li class="toctree-l1"><a href="javascript: void(0);">Drill-on-YARN</a></li> + <ul style="display: none"> + + + <li class="toctree-l2"><a class="reference internal" href="/docs/drill-on-yarn-introduction/">Drill-on-YARN Introduction</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/creating-a-basic-drill-cluster/">Creating a Basic Drill Cluster</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/launch-drill-under-yarn/">Launch Drill Under YARN</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/configuration-reference/">Configuration Reference</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/drill-on-yarn-command-line-tool/">Drill-on-YARN Command-Line Tool</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/using-the-drill-on-yarn-web-ui/">Using the Drill-on-YARN Web UI</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/multiple-drill-clusters/">Multiple Drill Clusters</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/enabling-web-ui-security/">Enabling Web UI Security</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/appendix-a-release-note-issues/">Appendix A: Release Note Issues</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/appendix-b-drill-env-sh-settings/">Appendix B: drill-env.sh Settings</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/appendix-c-troubleshooting/">Appendix C: Troubleshooting</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/appendix-d-recreate-the-drill-archive/">Appendix D: Recreate the Drill Archive</a></li> + + + </ul> + + + + <li class="toctree-l1"><a href="javascript: void(0);">Install Drill</a></li> + <ul style="display: none"> + + + <li class="toctree-l2"><a class="reference internal" href="/docs/install-drill-introduction/">Install Drill Introduction</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/migrating-parquet-data/">Migrating Parquet Data</a></li> + + + + <li class="toctree-l2"><a href="javascript: void(0);">Installing Drill in Embedded Mode</a></li> + <ul style="display: none"> + + <li class="toctree-l3"><a class="reference internal" href="/docs/embedded-mode-prerequisites/">Embedded Mode Prerequisites</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/installing-drill-on-linux-and-mac-os-x/">Installing Drill on Linux and Mac OS X</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/starting-drill-on-linux-and-mac-os-x/">Starting Drill on Linux and Mac OS X</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/installing-drill-on-windows/">Installing Drill on Windows</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/starting-drill-on-windows/">Starting Drill on Windows</a></li> + + </ul> + + + + <li class="toctree-l2"><a href="javascript: void(0);">Installing Drill in Distributed Mode</a></li> + <ul style="display: none"> + + <li class="toctree-l3"><a class="reference internal" href="/docs/distributed-mode-prerequisites/">Distributed Mode Prerequisites</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/installing-drill-on-the-cluster/">Installing Drill on the Cluster</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/starting-drill-in-distributed-mode/">Starting Drill in Distributed Mode</a></li> + + </ul> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/starting-the-web-console/">Starting the Web Console</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/identifying-multiple-drill-versions-in-a-cluster/">Identifying Multiple Drill Versions in a Cluster</a></li> + + + </ul> + + + + <li class="toctree-l1 current_section "><a href="javascript: void(0);">Configure Drill</a></li> + <ul class="current_section"> + + + <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);">Securing Drill</a></li> + <ul style="display: none"> + + <li class="toctree-l3"><a class="reference internal" href="/docs/securing-drill-introduction/">Securing Drill Introduction</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/secure-communication-paths/">Secure Communication Paths</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/roles-and-privileges/">Roles and Privileges</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-user-impersonation/">Configuring User Impersonation</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-inbound-impersonation/">Configuring Inbound Impersonation</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-user-impersonation-with-hive-authorization/">Configuring User Impersonation with Hive Authorization</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-user-security/">Configuring User Security</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-plain-security/">Configuring Plain Security</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/using-libpam4j-as-the-pam-authenticator/">Using libpam4j as the PAM Authenticator</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/using-jpam-as-the-pam-authenticator/">Using jpam as the PAM Authenticator</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-kerberos-security/">Configuring Kerberos Security</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-web-console-and-rest-api-security/">Configuring Web Console and REST API Security</a></li> + + </ul> + + + + <li class="toctree-l2"><a href="javascript: void(0);">Configuring a Multitenant Cluster</a></li> + <ul style="display: none"> + + <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-a-multitenant-cluster-introduction/">Configuring a Multitenant Cluster Introduction</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-multitenant-resources/">Configuring Multitenant Resources</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-resources-for-a-shared-drillbit/">Configuring Resources for a Shared Drillbit</a></li> + + </ul> + + + + <li class="toctree-l2"><a href="javascript: void(0);">Configuration Options</a></li> + <ul style="display: none"> + + <li class="toctree-l3"><a class="reference internal" href="/docs/configuration-options-introduction/">Configuration Options Introduction</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/start-up-options/">Start-Up Options</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/planning-and-execution-options/">Planning and Execution Options</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/persistent-configuration-storage/">Persistent Configuration Storage</a></li> + + </ul> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/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> + + + + <li class="toctree-l2 current"><a class="reference internal" href="/docs/configuring-cgroups-to-control-cpu-usage/">Configuring cgroups to Control CPU Usage</a></li> + + + </ul> + + + + <li class="toctree-l1"><a href="javascript: void(0);">Connect a Data Source</a></li> + <ul style="display: none"> + + + <li class="toctree-l2"><a class="reference internal" href="/docs/connect-a-data-source-introduction/">Connect a Data Source Introduction</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/storage-plugin-registration/">Storage Plugin Registration</a></li> + + + + <li class="toctree-l2"><a href="javascript: void(0);">Storage Plugin Configuration</a></li> + <ul style="display: none"> + + <li class="toctree-l3"><a class="reference internal" href="/docs/plugin-configuration-basics/">Plugin Configuration Basics</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/workspaces/">Workspaces</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/drill-default-input-format/">Drill Default Input Format</a></li> + + </ul> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/file-system-storage-plugin/">File System Storage Plugin</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/hbase-storage-plugin/">HBase Storage Plugin</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/hive-storage-plugin/">Hive Storage Plugin</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/rdbms-storage-plugin/">RDBMS Storage Plugin</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/mongodb-storage-plugin/">MongoDB Storage Plugin</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/mapr-db-format/">MapR-DB Format</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/s3-storage-plugin/">S3 Storage Plugin</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/httpd-storage-plugin/">HTTPD 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"><a class="reference internal" href="/docs/kafka-storage-plugin/">Kafka 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 Buildersâ WebFOCUS with Apache Drill</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/configuring-jreport-with-drill/">Configuring JReport with Drill</a></li> + + </ul> + + + </ul> + + + + <li class="toctree-l1"><a href="javascript: void(0);">Query Data</a></li> + <ul style="display: none"> + + + <li class="toctree-l2"><a class="reference internal" href="/docs/query-data-introduction/">Query Data Introduction</a></li> + + + + <li class="toctree-l2"><a href="javascript: void(0);">Querying a File System</a></li> + <ul style="display: none"> + + <li class="toctree-l3"><a class="reference internal" href="/docs/querying-a-file-system-introduction/">Querying a File System Introduction</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/querying-avro-files/">Querying Avro Files</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/querying-json-files/">Querying JSON Files</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/querying-parquet-files/">Querying Parquet Files</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/querying-plain-text-files/">Querying Plain Text Files</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/querying-directories/">Querying Directories</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/querying-sequence-files/">Querying Sequence Files</a></li> + + </ul> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/querying-hbase/">Querying HBase</a></li> + + + + <li class="toctree-l2"><a href="javascript: void(0);">Querying Complex Data</a></li> + <ul style="display: none"> + + <li class="toctree-l3"><a class="reference internal" href="/docs/querying-complex-data-introduction/">Querying Complex Data Introduction</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/sample-data-donuts/">Sample Data: Donuts</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/selecting-flat-data/">Selecting Flat Data</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/using-sql-functions-clauses-and-joins/">Using SQL Functions, Clauses, and Joins</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/selecting-nested-data-for-a-column/">Selecting Nested Data for a Column</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/selecting-multiple-columns-within-nested-data/">Selecting Multiple Columns Within Nested Data</a></li> + + </ul> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/querying-hive/">Querying Hive</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/querying-the-information-schema/">Querying the INFORMATION SCHEMA</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/querying-system-tables/">Querying System Tables</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/monitoring-and-canceling-queries-in-the-drill-web-console/">Monitoring and Canceling Queries in the Drill Web Console</a></li> + + + </ul> + + + + <li class="toctree-l1"><a href="javascript: void(0);">Performance Tuning</a></li> + <ul style="display: none"> + + + <li class="toctree-l2"><a class="reference internal" href="/docs/performance-tuning-introduction/">Performance Tuning Introduction</a></li> + + + + <li class="toctree-l2"><a href="javascript: void(0);">Partition Pruning</a></li> + <ul style="display: none"> + + <li class="toctree-l3"><a class="reference internal" href="/docs/partition-pruning-introduction/">Partition Pruning Introduction</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/how-to-partition-data/">How to Partition Data</a></li> + + </ul> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/asynchronous-parquet-reader/">Asynchronous Parquet Reader</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/optimizing-parquet-metadata-reading/">Optimizing Parquet Metadata Reading</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/parquet-filter-pushdown/">Parquet Filter Pushdown</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/hive-metadata-caching/">Hive Metadata Caching</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/choosing-a-storage-format/">Choosing a Storage Format</a></li> + + + + <li class="toctree-l2"><a href="javascript: void(0);">Query Plans and Tuning</a></li> + <ul style="display: none"> + + <li class="toctree-l3"><a class="reference internal" href="/docs/query-plans-and-tuning-introduction/">Query Plans and Tuning Introduction</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/join-planning-guidelines/">Join Planning Guidelines</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/guidelines-for-optimizing-aggregation/">Guidelines for Optimizing Aggregation</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/modifying-query-planning-options/">Modifying Query Planning Options</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/sort-based-and-hash-based-memory-constrained-operators/">Sort-Based and Hash-Based Memory-Constrained Operators</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/enabling-query-queuing/">Enabling Query Queuing</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/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/data-type-conversion/">Data Type Conversion</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/date-time-functions-and-arithmetic/">Date/Time Functions and Arithmetic</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/string-manipulation/">String Manipulation</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/aggregate-and-aggregate-statistical/">Aggregate and Aggregate Statistical</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/functions-for-handling-nulls/">Functions for Handling Nulls</a></li> + + </ul> + + + + <li class="toctree-l2"><a href="javascript: void(0);">SQL Window Functions</a></li> + <ul style="display: none"> + + <li class="toctree-l3"><a class="reference internal" href="/docs/sql-window-functions-introduction/">SQL Window Functions Introduction</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/aggregate-window-functions/">Aggregate Window Functions</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/ranking-window-functions/">Ranking Window Functions</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/value-window-functions/">Value Window Functions</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/sql-window-functions-examples/">SQL Window Functions Examples</a></li> + + </ul> + + + + <li class="toctree-l2"><a href="javascript: void(0);">Nested Data Functions</a></li> + <ul style="display: none"> + + <li class="toctree-l3"><a class="reference internal" href="/docs/nested-data-limitations/">Nested Data Limitations</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/flatten/">FLATTEN</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/kvgen/">KVGEN</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/repeated-count/">REPEATED_COUNT</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/repeated-contains/">REPEATED_CONTAINS</a></li> + + </ul> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/query-directory-functions/">Query Directory Functions</a></li> + + + + <li class="toctree-l2"><a href="javascript: void(0);">SQL Commands</a></li> + <ul style="display: none"> + + <li class="toctree-l3"><a class="reference internal" href="/docs/supported-sql-commands/">Supported SQL Commands</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/set/">SET</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/reset/">RESET</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/alter-system/">ALTER SYSTEM</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/create-table-as-ctas/">CREATE TABLE AS (CTAS)</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/create-temporary-table-as-cttas/">CREATE TEMPORARY TABLE AS (CTTAS)</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/create-function-using-jar/">CREATE FUNCTION USING JAR</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/partition-by-clause/">PARTITION BY Clause</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/create-view/">CREATE VIEW</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/describe/">DESCRIBE</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/drop-function-using-jar/">DROP FUNCTION USING JAR</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/drop-table/">DROP TABLE</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/drop-view/">DROP VIEW</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/explain/">EXPLAIN</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/select/">SELECT</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/select-list/">SELECT List</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/from-clause/">FROM Clause</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/group-by-clause/">GROUP BY Clause</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/having-clause/">HAVING Clause</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/limit-clause/">LIMIT Clause</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/offset-clause/">OFFSET Clause</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/order-by-clause/">ORDER BY Clause</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/union-set-operator/">UNION Set Operator</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/where-clause/">WHERE Clause</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/with-clause/">WITH Clause</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/show-databases-and-show-schemas/">SHOW DATABASES and SHOW SCHEMAS</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/show-files/">SHOW FILES</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/show-tables/">SHOW TABLES</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/use/">USE</a></li> + + </ul> + + + + <li class="toctree-l2"><a href="javascript: void(0);">SQL Conditional Expressions</a></li> + <ul style="display: none"> + + <li class="toctree-l3"><a class="reference internal" href="/docs/case/">CASE</a></li> + + </ul> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/reserved-keywords/">Reserved Keywords</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/sql-extensions/">SQL Extensions</a></li> + + + </ul> + + + + <li class="toctree-l1"><a href="javascript: void(0);">Data Sources and File Formats</a></li> + <ul style="display: none"> + + + <li class="toctree-l2"><a class="reference internal" href="/docs/data-sources-and-file-formats-introduction/">Data Sources and File Formats Introduction</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/hive-to-drill-data-type-mapping/">Hive-to-Drill Data Type Mapping</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/deploying-and-using-a-hive-udf/">Deploying and Using a Hive UDF</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/parquet-format/">Parquet Format</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/json-data-model/">JSON Data Model</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/text-files-csv-tsv-psv/">Text Files: CSV, TSV, PSV</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/sequence-files/">Sequence Files</a></li> + + + </ul> + + + + <li class="toctree-l1"><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/developing-a-simple-function/">Developing a Simple Function</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/tutorial-develop-a-simple-function/">Tutorial: Develop a Simple Function</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/developing-an-aggregate-function/">Developing an Aggregate Function</a></li> + + + + <li class="toctree-l2"><a href="javascript: void(0);">Adding Custom Functions to Drill</a></li> + <ul style="display: none"> + + <li class="toctree-l3"><a class="reference internal" href="/docs/adding-custom-functions-to-drill-introduction/">Adding Custom Functions to Drill Introduction</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/manually-adding-custom-functions-to-drill/">Manually Adding Custom Functions to Drill</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/creating-custom-authenticators/">Creating Custom Authenticators</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/dynamic-udfs/">Dynamic UDFs</a></li> + + </ul> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/using-custom-functions-in-queries/">Using Custom Functions in Queries</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/custom-function-interfaces/">Custom Function Interfaces</a></li> + + + </ul> + + + + <li class="toctree-l1"><a class="reference internal" href="/docs/troubleshooting/">Troubleshooting</a></li> + + + + <li class="toctree-l1"><a href="javascript: void(0);">Developer Information</a></li> + <ul style="display: none"> + + + <li class="toctree-l2"><a href="javascript: void(0);">REST API</a></li> + <ul style="display: none"> + + <li class="toctree-l3"><a class="reference internal" href="/docs/rest-api-introduction/">REST API Introduction</a></li> + + <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> + + </ul> + + + + <li class="toctree-l2"><a href="javascript: void(0);">Develop Drill</a></li> + <ul style="display: none"> + + <li class="toctree-l3"><a class="reference internal" href="/docs/compiling-drill-from-source/">Compiling Drill from Source</a></li> + + </ul> + + + + <li class="toctree-l2"><a href="javascript: void(0);">Contribute to Drill</a></li> + <ul style="display: none"> + + <li class="toctree-l3"><a class="reference internal" href="/docs/apache-drill-contribution-guidelines/">Apache Drill Contribution Guidelines</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/apache-drill-contribution-ideas/">Apache Drill Contribution Ideas</a></li> + + </ul> + + + + <li class="toctree-l2"><a href="javascript: void(0);">Design Docs</a></li> + <ul style="display: none"> + + <li class="toctree-l3"><a class="reference internal" href="/docs/drill-plan-syntax/">Drill Plan Syntax</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/rpc-overview/">RPC Overview</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/query-stages/">Query Stages</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/useful-research/">Useful Research</a></li> + + <li class="toctree-l3"><a class="reference internal" href="/docs/value-vectors/">Value Vectors</a></li> + + </ul> + + + </ul> + + + + <li class="toctree-l1"><a href="javascript: void(0);">Release Notes</a></li> + <ul style="display: none"> + + + <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-1-13-0-release-notes/">Apache Drill 1.13.0 Release Notes</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-1-12-0-release-notes/">Apache Drill 1.12.0 Release Notes</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-1-11-0-release-notes/">Apache Drill 1.11.0 Release Notes</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-1-10-0-release-notes/">Apache Drill 1.10.0 Release Notes</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-1-9-0-release-notes/">Apache Drill 1.9.0 Release Notes</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-1-8-0-release-notes/">Apache Drill 1.8.0 Release Notes</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-1-7-0-release-notes/">Apache Drill 1.7.0 Release Notes</a></li> + + + + <li class="toctree-l2"><a class="reference internal" href="/docs/apache-drill-1-6-0-release-notes/">Apache Drill 1.6.0 Release Notes</a></li> + + + 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<li>Configuring cgroups to Control CPU Usage</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/configure-drill/121-configuring-cgroups-to-control-cpu-usage.md"; target="_blank"><i class="fa fa-pencil-square-o"></i></a> + + + <div class="int_title left"> + <h1>Configuring cgroups to Control CPU Usage</h1> + + </div> + + Mar 22, 2018 + + <link href="/css/docpage.css" rel="stylesheet" type="text/css"> + + <div class="int_text" align="left"> + + <p>Linux cgroups (control groups) enable you to limit system resources to defined user groups or processes. As of Drill 1.13, you can configure a cgroup for Drill to enforce CPU limits on the Drillbit service. You can set a CPU limit for the Drill cgroup on each Drill node in the /etc/cgconfig.conf file.</p> + +<p>You can set the CPU limit as a soft or hard limit, or both. The hard limit takes precedence over the soft limit. When Drill hits the hard limit, in-progress queries may not complete. </p> + +<h2 id="cpu-limits">CPU Limits</h2> + +<p>You set the soft and hard limits with parameters in the /etc/cgconfig.conf file. The following sections describe the parameters for soft and hard limits. </p> + +<p><strong>Soft Limit Parameter</strong><br> +You set the soft limit with the <code>cpu.shares</code> parameter. When you set a soft limit, Drill can exceed the CPU allocated if extra CPU is available for use on the system. Drill can continue to use CPU until there is contention with other processes over the CPU or Drill hits the hard limit. </p> + +<p><strong>Hard Limit Parameters</strong><br> +You set the hard limit with the <code>cpu.cfs_period_us</code> and <code>cpu.cfs_quota_us</code> parameters. The <code>cpu.cfs_period_us</code> and <code>cpu.cfs_quota_us</code> parameters set a hard limit on the amount of CPU time that the Drill process can use. </p> + +<ul> +<li><p><strong><code>cpu.cfs_period_us</code></strong><br> +The <code>cpu.cfs_quota_us</code> parameter specifies a segment of time (in microseconds represented by <code>us</code> for µs) for how often the access to CPU resources should be reallocated. For example, if tasks in a cgroup can access a single CPU for 0.2 seconds out of every 1 second, set cpu.cfs_quota_us to 200000 and cpu.cfs_period_us to 1000000. The upper limit of the <code>cpu.cfs_quota_us</code> parameter is 1 second and the lower limit is 1000 microseconds. </p></li> +<li><p><strong><code>cpu.cfs_quota_us</code></strong><br> +The <code>cpu.cfs_quota_us</code> parameter specifies the total amount of runtime (in microseconds represented by <code>us</code> for µs) for which all tasks in the Drill cgroup can run during one period (as defined by cpu.cfs_period_us). As soon as tasks in the Drill cgroup use the time specified by the quota, they are throttled for the remainder of the time specified by the period and not allowed to run until the next period. For example, if tasks in the Drill cgroup can access a single CPU for 0.2 seconds out of every 1 second, set <code>cpu.cfs_quota_us</code> to 200000 and <code>cpu.cfs_period_us</code> to 1000000. A value of -1 indicates that the group does not have any restrictions on CPU. </p></li> +</ul> + +<h2 id="before-you-begin">Before You Begin</h2> + +<p>Each Drill node must have the libcgroup package installed to configure CPU limits for a Drill cgroup. The libcgroup package installs the cgconfig service required to configure and manage the Drill cgroup.</p> + +<p>You can install the libcgroup package using the <code>yum install</code> command, as shown: </p> +<div class="highlight"><pre><code class="language-text" data-lang="text"> yum install libcgroup +</code></pre></div> +<h2 id="configuring-cpu-limits">Configuring CPU Limits</h2> + +<p>Complete the following steps to set a hard and/or soft limit on Drill CPU usage for the Drill process running on the node: </p> + +<p>1-Start the cgconfig service: </p> +<div class="highlight"><pre><code class="language-text" data-lang="text"> service cgconfig start +</code></pre></div> +<p>2-Add a cgroup for Drill in the /etc/cgconfig.conf file: </p> +<div class="highlight"><pre><code class="language-text" data-lang="text"> group drillcpu { + cpu { + cpu.shares = 320; + cpu.cfs_quota_us = 400000; + cpu.cfs_period_us = 100000; + } + } +</code></pre></div> +<p><strong>Note:</strong> The cgroup name is specific to the Drill cgroup and does not correlate with any other configuration. You can give this group any name you prefer. The name drillcpu is used as an example. </p> + +<p>In the configuration example, the <code>cpu.shares</code> parameter sets the soft limit. The other two parameters, <code>cpu.cfs_quota_us</code> and <code>cpu.cfs_period_us</code>, set the hard limit. If you prefer to set only one type of limit, remove the parameters that do not apply. </p> + +<p>To set a soft limit, allocate a specific number of CPU shares to the Drill cgroup in the configuration. Calculate the CPU shares as: </p> +<div class="highlight"><pre><code class="language-text" data-lang="text"> 1024 (CPU allocated to Drill/Total available CPU) +</code></pre></div> +<p>In the example, CPU shares was calculated as: </p> +<div class="highlight"><pre><code class="language-text" data-lang="text"> 1024 (10/32) = 320 +</code></pre></div> +<p>To set a hard limit, add limits to the <code>cpu.cfs_quota_us</code> and <code>cpu.cfs_period_us</code> parameters. In the configuration example, the Drill process can fully utilize 4 CPU. </p> + +<p><strong>Note:</strong> The hard limit parameter settings persist after each cgroup service restart. Alternatively, you can set the parameters at the session level using the following commands: </p> +<div class="highlight"><pre><code class="language-text" data-lang="text"> echo 400000 > /cgroup/cpu/drillcpu/cpu.cfs_quota_us + echo 100000 > /cgroup/cpu/drillcpu/cpu.cfs_period_us +</code></pre></div> +<p>3-(Optional) If you want the cgconfig service to automatically restart upon system reboots, run the following command: </p> +<div class="highlight"><pre><code class="language-text" data-lang="text"> chkconfig cgconfig on +</code></pre></div> +<p>4-Run the following command to add the Drill process ID (PID) to the /cgroup/cpu/drillcpu/cgroup.procs file, as shown: </p> +<div class="highlight"><pre><code class="language-text" data-lang="text"> echo 25809 > /cgroup/cpu/drillcpu/cgroup.procs +</code></pre></div> +<p><strong>Note:</strong> You must perform this step each time a Drillbit restarts. </p> + +<p>For additional information, refer to the following documentation:<br> +- <a href="https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html";>https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html</a><br> +- <a href="resource_management_guide/sect-cpu-example_usage">resource_management_guide/sect-cpu-example_usage</a><br> +- <a href="https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html";>https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html</a> +- <a href="resource_management_guide/sec-cpu_and_memory-use_case">resource_management_guide/sec-cpu_and_memory-use_case</a></p> + + + + <div class="doc-nav"> + + <span class="previous-toc"><a href="/docs/configuring-the-drill-shell/">â Configuring the Drill Shell</a></span><span class="next-toc"><a href="/docs/connect-a-data-source/">Connect a Data Source â</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/> +</div> +</div> + + <script> +(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){ +(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o), +m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m) +})(window,document,'script','//www.google-analytics.com/analytics.js','ga'); + +ga('create', 'UA-53379651-1', 'auto'); +ga('send', 'pageview'); +</script> +<script type="text/javascript" src="//s7.addthis.com/js/300/addthis_widget.js#pubid=ra-548b2caa33765e8d" async="async"></script> +</body> +</html> http://git-wip-us.apache.org/repos/asf/drill-site/blob/b38c239a/docs/configuring-drill-memory/index.html ---------------------------------------------------------------------- diff --git a/docs/configuring-drill-memory/index.html b/docs/configuring-drill-memory/index.html index 8beca66..476d195 100644 --- a/docs/configuring-drill-memory/index.html +++ b/docs/configuring-drill-memory/index.html @@ -265,10 +265,6 @@ <li class="toctree-l2"><a class="reference internal" href="/docs/appendix-d-recreate-the-drill-archive/">Appendix D: Recreate the Drill Archive</a></li> - - <li class="toctree-l2"><a class="reference internal" href="/docs/appendix-e-using-cgroups-to-control-cpu-usage/">Appendix E: Using cgroups to Control CPU Usage</a></li> - - </ul> @@ -404,6 +400,10 @@ <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-the-drill-shell/">Configuring the Drill Shell</a></li> + + <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-cgroups-to-control-cpu-usage/">Configuring cgroups to Control CPU Usage</a></li> + + </ul> @@ -1216,7 +1216,7 @@ </div> - Mar 14, 2018 + Mar 22, 2018 <link href="/css/docpage.css" rel="stylesheet" type="text/css"> @@ -1229,36 +1229,75 @@ <p>The JVM heap memory does not limit the amount of direct memory available in a Drillbit. The on-heap memory for Drill is typically set at 4-8G (default is 4), which should suffice because Drill avoids having data sit in heap memory. </p> -<p>The following sections describe how to modify the memory allocated to each Drillbit and queries: </p> +<p>The following sections describe how to allocate memory to Drillbits and queries, and how to enable bounds checking if you see performance issues: </p> <h2 id="modifying-memory-allocated-to-a-drillbit">Modifying Memory Allocated to a Drillbit</h2> -<p>Modify the memory allocated to each Drillbit in a cluster in the Drillbit startup script, <code><drill_installation_directory>/conf/drill-env.sh</code>. You must <a href="/docs/starting-drill-in-distributed-mode">restart Drill</a> after you modify the script.</p> +<p>Modify the memory allocated to each Drillbit in a cluster in the Drillbit startup script, <code><drill_installation_directory>/conf/drill-env.sh</code>. You must <a href="/docs/starting-drill-in-distributed-mode">restart Drill</a> after you modify the script. </p> + +<p>The <code>drill-env.sh</code> file contains the following options:</p> +<div class="highlight"><pre><code class="language-text" data-lang="text">#export DRILLBIT_MAX_PROC_MEM=${DRILLBIT_MAX_PROC_MEM:-"13G"} +//Maximum cumulative memory allocated to the Drill process during startup. This option was introduced in Drill 1.13. + +#export DRILL_HEAP=${DRILL_HEAP:-"4G"} +//Maximum theoretical heap limit for the JVM per node. +#export DRILL_MAX_DIRECT_MEMORY=${DRILL_MAX_DIRECT_MEMORY:-"8G"} +//Java direct memory limit per node. + +#export DRILLBIT_CODE_CACHE_SIZE=${DRILLBIT_CODE_CACHE_SIZE:-"1G"} +//Do not modify the DRILLBIT_CODE_CACHE_SIZE. The value for this parameter is auto-computed based on the heap size and cannot exceed 1GB. +</code></pre></div> <div class="admonition note"> <p class="first admonition-title">Note</p> <p class="last">If DRILL_MAX_DIRECT_MEMORY is not set, the limit depends on the amount of available direct memory. </p> </div> -<p>The <code>drill-env.sh</code> file contains the following options:</p> -<div class="highlight"><pre><code class="language-text" data-lang="text">#export DRILL_HEAP=${DRILL_HEAP:-"4Gâ} -#export DRILL_MAX_DIRECT_MEMORY=${DRILL_MAX_DIRECT_MEMORY:-"8G"} -</code></pre></div> <p>To customize memory limits, uncomment the line needed and change the setting: </p> -<div class="highlight"><pre><code class="language-text" data-lang="text">export DRILL_HEAP=${DRILL_HEAP:-"<limit>â} -export DRILL_MAX_DIRECT_MEMORY=${DRILL_MAX_DIRECT_MEMORY:-â<limit>"} +<div class="highlight"><pre><code class="language-text" data-lang="text">export DRILLBIT_MAX_PROC_MEM=${DRILLBIT_MAX_PROC_MEM:-"<limit>"} +export DRILL_HEAP=${DRILL_HEAP:-"<limit>"} +export DRILL_MAX_DIRECT_MEMORY=${DRILL_MAX_DIRECT_MEMORY:-"<limit>"} </code></pre></div> -<p>DRILL_MAX_HEAP is the maximum theoretical heap limit for the JVM per node.<br> -DRILL_MAX_DIRECT_MEMORY is the Java direct memory limit per node. </p> +<p>For example, if you set <code>DRILLBIT_MAX_PROC_MEM</code> to 40G, the total amount of memory allocated to the following memory parameters cannot exceed 40G: </p> +<div class="highlight"><pre><code class="language-text" data-lang="text"> DRILL_HEAP=8G + DRILL_MAX_DIRECT_MEMORY=10G + DRILLBIT_CODE_CACHE_SIZE=1024M +</code></pre></div> +<p>At startup, the auto-setup.sh script (introduced in Drill 1.13) performs a check to see if these memory parameters are declared. If the parameters are declared, the script performs a check to verify that the cumulative memory of the parameters does not exceed the value specified by <code>DRILLBIT_MAX_PROC_MEM</code>. If the cumulative memory exceeds the total amount of memory defined by <code>DRILLBIT_MAX_PROC_MEM</code>, Drill returns an error message with instructions. See the example below.</p> -<p>If performance is an issue, add -Dbounds=false, as shown in the following example:</p> -<div class="highlight"><pre><code class="language-text" data-lang="text">export DRILL_JAVA_OPTS="$DRILL_JAVA_OPTS -Dbounds=false" +<p>If any of the memory parameters are undefined, the script adjusts the settings for the undefined parameters to ensure that the total memory allocated is within the value defined by <code>DRILLBIT_MAX_PROC_MEM</code>.</p> + +<p>By default, <code>DRILLBIT_MAX_PROC_MEM</code> is not defined. You can define <code>DRILLBIT_MAX_PROC_MEM</code> in KB, MB, or GB, as shown: </p> +<div class="highlight"><pre><code class="language-text" data-lang="text"> DRILLBIT_MAX_PROC_MEM=13G + DRILLBIT_MAX_PROC_MEM=8192M + DRILLBIT_MAX_PROC_MEM=4194304K </code></pre></div> -<p>As of Drill 1.13, bounds checking for direct memory is disabled by default. To enable bounds checking for direct memory, use the DRILLBIT_JAVA_OPTS variable to pass the <code>drill.exec.memory.enable_unsafe_bounds_check</code> parameter in $DRILL_HOME/conf/drill-env.sh, as shown: </p> -<div class="highlight"><pre><code class="language-text" data-lang="text">export DRILL_JAVA_OPTS="$DRILL_JAVA_OPTS -Ddrill.exec.memory.enable_unsafe_bounds_check=true" +<p>Alternatively, you can set <code>DRILLBIT_MAX_PROC_MEM</code> as a percentage of total memory: </p> +<div class="highlight"><pre><code class="language-text" data-lang="text"> DRILLBIT_MAX_PROC_MEM=50% </code></pre></div> -<p>For earlier versions of Drill (prior to 1.13), bounds checking is enabled by default. To disable bounds checking, set the <code>drill.enable_unsafe_memory_access</code> parameter to true, as shown: </p> -<div class="highlight"><pre><code class="language-text" data-lang="text">export DRILL_JAVA_OPTS="$DRILL_JAVA_OPTS -Ddrill.enable_unsafe_memory_access=true" +<p>If you do not set this variable, it is disabled. If you set this variable, you can unset it to disable it. </p> + +<p><strong>Example</strong> </p> + +<p>If a system has 48GB of free memory and you set the following parameters in drill-env.sh: </p> +<div class="highlight"><pre><code class="language-text" data-lang="text"> DRILLBIT_MAX_PROC_MEM=25% + DRILL_HEAP=8G + DRILL_MAX_DIRECT_MEMORY=10G + DRILLBIT_CODE_CACHE_SIZE=1024M +</code></pre></div> +<p>The Drillbit fails on startup with the following messages:</p> +<div class="highlight"><pre><code class="language-text" data-lang="text"> [WARN] 25% of System Memory (47 GB) translates to 12 GB + [ERROR] Unable to start Drillbit due to memory constraint violations Total Memory Requested : 19 GB + Check and modify the settings or increase the maximum amount of memory permitted. +</code></pre></div> +<p>If DRILLBIT_MAX_PROC_MEM is increased to 50%; the Drillbit starts up with the following warnings: </p> +<div class="highlight"><pre><code class="language-text" data-lang="text"> [WARN] 50% of the system memory (48 GB) translates to 24 GB. + [WARN] You have an allocation of 4 GB that is currently unused from a total of 24 GB. + You can increase your existing memory configuration to use this extra memory. +</code></pre></div> +<p>Additionally, if the available free memory is less than the allocation, the following additional warnings are provided under the assumption that the operating system will reclaim more free memory when required:</p> +<div class="highlight"><pre><code class="language-text" data-lang="text"> [WARN] Total Memory Allocation for Drillbit (19GB) exceeds available free memory (11GB). + [WARN] Drillbit will start up, but can potentially crash due to oversubscribing of system memory. </code></pre></div> <h2 id="modifying-memory-allocated-to-queries">Modifying Memory Allocated to Queries</h2> @@ -1266,7 +1305,7 @@ DRILL_MAX_DIRECT_MEMORY is the Java direct memory limit per node. </p> <p>If you modify the memory allocated per query and continue to experience out-of-memory errors, you can try reducing the value of the <a href="/docs/configuration-options-introduction/"><code>planner.width.max_per_node</code></a> option. Reducing the value of this option reduces the level of parallelism per node. However, this may increase the amount of time required for a query to complete. </p> -<p>Another option you can modify is the <code>drill.exec.memory.operator.output_batch_size</code> option, introduced in Drill 1.13. The <code>drill.exec.memory.operator.output_batch_size</code> option limits the amount of memory that the Flatten, Merge Join, and External Sort operators allocate to outgoing batches. Limiting the memory allocated to outgoing batches can improve concurrency and prevent queries from failing with out-of-memory errors.</p> +<p>You can also modify the <code>drill.exec.memory.operator.output_batch_size</code> option, introduced in Drill 1.13. The <code>drill.exec.memory.operator.output_batch_size</code> option limits the amount of memory that the Flatten, Merge Join, and External Sort operators allocate to outgoing batches. Limiting the memory allocated to outgoing batches can improve concurrency and prevent queries from failing with out-of-memory errors.</p> <p>The average row size of the outgoing batch (calculated from the incoming batch size) determines the number of rows that can fit into the available memory for the batch. If your queries fail with memory errors, reduce the value of the <code>drill.exec.memory.operator.output_batch_size</code> option to reduce the output batch size. </p> @@ -1275,7 +1314,18 @@ DRILL_MAX_DIRECT_MEMORY is the Java direct memory limit per node. </p> <p><strong>Note:</strong> Configuring a batch size less than 1 MB is not recommended, as it could lead to performance issues. </p> <p>Use the ALTER SYSTEM SET command to change the settings, as shown: </p> -<div class="highlight"><pre><code class="language-text" data-lang="text"> ALTER SYSTEM SET `drill.exec.memory.operator.output_batch_size` = <value>; +<div class="highlight"><pre><code class="language-text" data-lang="text"> ALTER SYSTEM SET `drill.exec.memory.operator.output_batch_size` = <value>; +</code></pre></div> +<h2 id="bounds-checking">Bounds Checking</h2> + +<p>If performance is an issue, add -Dbounds=false, as shown in the following example:</p> +<div class="highlight"><pre><code class="language-text" data-lang="text">export DRILL_JAVA_OPTS="$DRILL_JAVA_OPTS -Dbounds=false" +</code></pre></div> +<p>As of Drill 1.13, bounds checking for direct memory is disabled by default. To enable bounds checking for direct memory, use the DRILLBIT_JAVA_OPTS variable to pass the <code>drill.exec.memory.enable_unsafe_bounds_check</code> parameter in $DRILL_HOME/conf/drill-env.sh, as shown: </p> +<div class="highlight"><pre><code class="language-text" data-lang="text">export DRILL_JAVA_OPTS="$DRILL_JAVA_OPTS -Ddrill.exec.memory.enable_unsafe_bounds_check=true" +</code></pre></div> +<p>For earlier versions of Drill (prior to 1.13), bounds checking is enabled by default. To disable bounds checking, set the <code>drill.enable_unsafe_memory_access</code> parameter to true, as shown: </p> +<div class="highlight"><pre><code class="language-text" data-lang="text">export DRILL_JAVA_OPTS="$DRILL_JAVA_OPTS -Ddrill.enable_unsafe_memory_access=true" </code></pre></div> http://git-wip-us.apache.org/repos/asf/drill-site/blob/b38c239a/docs/configuring-inbound-impersonation/index.html ---------------------------------------------------------------------- diff --git a/docs/configuring-inbound-impersonation/index.html b/docs/configuring-inbound-impersonation/index.html index 341c2cb..6b9e4b9 100644 --- a/docs/configuring-inbound-impersonation/index.html +++ b/docs/configuring-inbound-impersonation/index.html @@ -265,10 +265,6 @@ <li class="toctree-l2"><a class="reference internal" href="/docs/appendix-d-recreate-the-drill-archive/">Appendix D: Recreate the Drill Archive</a></li> - - <li class="toctree-l2"><a class="reference internal" href="/docs/appendix-e-using-cgroups-to-control-cpu-usage/">Appendix E: Using cgroups to Control CPU Usage</a></li> - - </ul> @@ -404,6 +400,10 @@ <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-the-drill-shell/">Configuring the Drill Shell</a></li> + + <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-cgroups-to-control-cpu-usage/">Configuring cgroups to Control CPU Usage</a></li> + + </ul> http://git-wip-us.apache.org/repos/asf/drill-site/blob/b38c239a/docs/configuring-jreport-with-drill/index.html ---------------------------------------------------------------------- diff --git a/docs/configuring-jreport-with-drill/index.html b/docs/configuring-jreport-with-drill/index.html index ce3647a..b5a4361 100644 --- a/docs/configuring-jreport-with-drill/index.html +++ b/docs/configuring-jreport-with-drill/index.html @@ -265,10 +265,6 @@ <li class="toctree-l2"><a class="reference internal" href="/docs/appendix-d-recreate-the-drill-archive/">Appendix D: Recreate the Drill Archive</a></li> - - <li class="toctree-l2"><a class="reference internal" href="/docs/appendix-e-using-cgroups-to-control-cpu-usage/">Appendix E: Using cgroups to Control CPU Usage</a></li> - - </ul> @@ -404,6 +400,10 @@ <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-the-drill-shell/">Configuring the Drill Shell</a></li> + + <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-cgroups-to-control-cpu-usage/">Configuring cgroups to Control CPU Usage</a></li> + + </ul> http://git-wip-us.apache.org/repos/asf/drill-site/blob/b38c239a/docs/configuring-kerberos-security/index.html ---------------------------------------------------------------------- diff --git a/docs/configuring-kerberos-security/index.html b/docs/configuring-kerberos-security/index.html index 4b00b68..9b2fd94 100644 --- a/docs/configuring-kerberos-security/index.html +++ b/docs/configuring-kerberos-security/index.html @@ -265,10 +265,6 @@ <li class="toctree-l2"><a class="reference internal" href="/docs/appendix-d-recreate-the-drill-archive/">Appendix D: Recreate the Drill Archive</a></li> - - <li class="toctree-l2"><a class="reference internal" href="/docs/appendix-e-using-cgroups-to-control-cpu-usage/">Appendix E: Using cgroups to Control CPU Usage</a></li> - - </ul> @@ -404,6 +400,10 @@ <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-the-drill-shell/">Configuring the Drill Shell</a></li> + + <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-cgroups-to-control-cpu-usage/">Configuring cgroups to Control CPU Usage</a></li> + + </ul> http://git-wip-us.apache.org/repos/asf/drill-site/blob/b38c239a/docs/configuring-multitenant-resources/index.html ---------------------------------------------------------------------- diff --git a/docs/configuring-multitenant-resources/index.html b/docs/configuring-multitenant-resources/index.html index 9b565f5..0994c0d 100644 --- a/docs/configuring-multitenant-resources/index.html +++ b/docs/configuring-multitenant-resources/index.html @@ -265,10 +265,6 @@ <li class="toctree-l2"><a class="reference internal" href="/docs/appendix-d-recreate-the-drill-archive/">Appendix D: Recreate the Drill Archive</a></li> - - <li class="toctree-l2"><a class="reference internal" href="/docs/appendix-e-using-cgroups-to-control-cpu-usage/">Appendix E: Using cgroups to Control CPU Usage</a></li> - - </ul> @@ -404,6 +400,10 @@ <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-the-drill-shell/">Configuring the Drill Shell</a></li> + + <li class="toctree-l2"><a class="reference internal" href="/docs/configuring-cgroups-to-control-cpu-usage/">Configuring cgroups to Control CPU Usage</a></li> + + </ul>
