Added: kylin/site/docs23/install/advance_settings.html URL: http://svn.apache.org/viewvc/kylin/site/docs23/install/advance_settings.html?rev=1822508&view=auto ============================================================================== --- kylin/site/docs23/install/advance_settings.html (added) +++ kylin/site/docs23/install/advance_settings.html Mon Jan 29 14:05:18 2018 @@ -0,0 +1,4238 @@ +<!-- +* Licensed to the Apache Software Foundation (ASF) under one +* or more contributor license agreements. See the NOTICE file +* distributed with this work for additional information +* regarding copyright ownership. The ASF licenses this file +* to you under the Apache License, Version 2.0 (the +* "License"); you may not use this file except in compliance +* with the License. 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The GUI to do this is in the âConfiguration Overwritesâ step of the Cube wizard, as the screenshot below.</p> + +<p><img src="/images/install/overwrite_config_v2.png" alt="" /></p> + +<p>Here take two example:</p> + +<ul> + <li> + <p><code class="highlighter-rouge">kylin.cube.algorithm</code>: it defines the Cubing algorithm that the job engine will select; Its default value is âautoâ, means the engine will dynamically pick an algorithm (âlayerâ or âinmemâ) by sampling the data. If you knows Kylin and your data/cluster well, you can set your preferred algorithm directly.</p> + </li> + <li> + <p><code class="highlighter-rouge">kylin.storage.hbase.region-cut-gb</code>: it defines how big a region is when creating the HBase table. The default value is â5â (GB) per region. It might be too big for a small or medium cube, so you can give it a smaller value to get more regions created, then can gain better query performance.</p> + </li> +</ul> + +<h2 id="overwrite-default-hadoop-job-conf-at-cube-level">Overwrite default Hadoop job conf at Cube level</h2> +<p>The <code class="highlighter-rouge">conf/kylin_job_conf.xml</code> and <code class="highlighter-rouge">conf/kylin_job_conf_inmem.xml</code> manage the default configurations for Hadoop jobs. If you have the need to customize the configs by cube, you can achieve that with the similar way as above, but need adding a prefix <code class="highlighter-rouge">kylin.engine.mr.config-override.</code>; These configs will be parsed out and then applied when submitting jobs. See two examples below:</p> + +<ul> + <li>If want a cubeâs job getting more memory from Yarn, you can define: <code class="highlighter-rouge">kylin.engine.mr.config-override.mapreduce.map.java.opts=-Xmx7g</code> and <code class="highlighter-rouge">kylin.engine.mr.config-override.mapreduce.map.memory.mb=8192</code></li> + <li>If want a cubeâs job going to a different Yarn resource queue, you can define: <code class="highlighter-rouge">kylin.engine.mr.config-override.mapreduce.job.queuename=myQueue</code> (âmyQueueâ is just a sample, change to your queue name)</li> +</ul> + +<h2 id="overwrite-default-hive-job-conf-at-cube-level">Overwrite default Hive job conf at Cube level</h2> + +<p>The <code class="highlighter-rouge">conf/kylin_hive_conf.xml</code> manages the default configurations when running Hive job (like creating intermediate flat hive table). If you have the need to customize the configs by cube, you can achieve that with the similar way as above, but need using another prefix <code class="highlighter-rouge">kylin.source.hive.config-override.</code>; These configs will be parsed out and then applied when running âhive -eâ or âbeelineâ commands. See example below:</p> + +<ul> + <li>If want hive goes to a different Yarn resource queue, you can define: <code class="highlighter-rouge">kylin.source.hive.config-override.mapreduce.job.queuename=myQueue</code> (âmyQueueâ is just a sample, change to your queue name)</li> +</ul> + +<h2 id="overwrite-default-spark-conf-at-cube-level">Overwrite default Spark conf at Cube level</h2> + +<p>The configurations for Spark are managed in <code class="highlighter-rouge">conf/kylin.properties</code> with prefix <code class="highlighter-rouge">kylin.engine.spark-conf.</code>. For example, if you want to use job queue âmyQueueâ to run Spark, setting âkylin.engine.spark-conf.spark.yarn.queue=myQueueâ will let Spark get âspark.yarn.queue=myQueueâ feeded when submitting applications. The parameters can be configured at Cube level, which will override the default values in <code class="highlighter-rouge">conf/kylin.properties</code>.</p> + +<h2 id="enable-compression">Enable compression</h2> + +<p>By default, Kylin does not enable compression, this is not the recommend settings for production environment, but a tradeoff for new Kylin users. A suitable compression algorithm will reduce the storage overhead. But unsupported algorithm will break the Kylin job build also. There are three kinds of compression used in Kylin, HBase table compression, Hive output compression and MR jobs output compression.</p> + +<ul> + <li> + <p>HBase table compression<br /> +The compression settings define in <code class="highlighter-rouge">kyiln.properties</code> by <code class="highlighter-rouge">kylin.hbase.default.compression.codec</code>, default value is <em>none</em>. The valid value includes <em>none</em>, <em>snappy</em>, <em>lzo</em>, <em>gzip</em> and <em>lz4</em>. Before changing the compression algorithm, please make sure the selected algorithm is supported on your HBase cluster. Especially for snappy, lzo and lz4, not all Hadoop distributions include these.</p> + </li> + <li> + <p>Hive output compression<br /> +The compression settings define in <code class="highlighter-rouge">kylin_hive_conf.xml</code>. The default setting is empty which leverages the Hive default configuration. If you want to override the settings, please add (or replace) the following properties into <code class="highlighter-rouge">kylin_hive_conf.xml</code>. Take the snappy compression for example:</p> + </li> +</ul> + +<div class="highlight"><pre><code class="language-groff" data-lang="groff"><property> + <name>mapreduce.map.output.compress.codec</name> + <value>org.apache.hadoop.io.compress.SnappyCodec</value> + <description></description> + </property> + <property> + <name>mapreduce.output.fileoutputformat.compress.codec</name> + <value>org.apache.hadoop.io.compress.SnappyCodec</value> + <description></description> + </property></code></pre></div> + +<ul> + <li>MR jobs output compression<br /> +The compression settings define in <code class="highlighter-rouge">kylin_job_conf.xml</code> and <code class="highlighter-rouge">kylin_job_conf_inmem.xml</code>. The default setting is empty which leverages the MR default configuration. If you want to override the settings, please add (or replace) the following properties into <code class="highlighter-rouge">kylin_job_conf.xml</code> and <code class="highlighter-rouge">kylin_job_conf_inmem.xml</code>. Take the snappy compression for example:</li> +</ul> + +<div class="highlight"><pre><code class="language-groff" data-lang="groff"><property> + <name>mapreduce.map.output.compress.codec</name> + <value>org.apache.hadoop.io.compress.SnappyCodec</value> + <description></description> + </property> + <property> + <name>mapreduce.output.fileoutputformat.compress.codec</name> + <value>org.apache.hadoop.io.compress.SnappyCodec</value> + <description></description> + </property></code></pre></div> + +<p>Compression settings only take effect after restarting Kylin server instance.</p> + +<h2 id="allocate-more-memory-to-kylin-instance">Allocate more memory to Kylin instance</h2> + +<p>Open <code class="highlighter-rouge">bin/setenv.sh</code>, which has two sample settings for <code class="highlighter-rouge">KYLIN_JVM_SETTINGS</code> environment variable; The default setting is small (4GB at max.), you can comment it and then un-comment the next line to allocate 16GB:</p> + +<div class="highlight"><pre><code class="language-groff" data-lang="groff">export KYLIN_JVM_SETTINGS="-Xms1024M -Xmx4096M -Xss1024K -XX:MaxPermSize=128M -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps -Xloggc:$KYLIN_HOME/logs/kylin.gc.$$ -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=10 -XX:GCLogFileSize=64M" +# export KYLIN_JVM_SETTINGS="-Xms16g -Xmx16g -XX:MaxPermSize=512m -XX:NewSize=3g -XX:MaxNewSize=3g -XX:SurvivorRatio=4 -XX:+CMSClassUnloadingEnabled -XX:+CMSParallelRemarkEnabled -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:CMSInitiatingOccupancyFraction=70 -XX:+DisableExplicitGC -XX:+HeapDumpOnOutOfMemoryError"</code></pre></div> + +<h2 id="enable-ldap-or-sso-authentication">Enable LDAP or SSO authentication</h2> + +<p>Check <a href="../howto/howto_ldap_and_sso.html">How to Enable Security with LDAP and SSO</a></p> + +<h2 id="enable-email-notification">Enable email notification</h2> + +<p>Kylin can send email notification on job complete/fail; To enable this, edit <code class="highlighter-rouge">conf/kylin.properties</code>, set the following parameters:</p> + +<div class="highlight"><pre><code class="language-groff" data-lang="groff">mail.enabled=true +mail.host=your-smtp-server +mail.username=your-smtp-account +mail.password=your-smtp-pwd +mail.sender=your-sender-address +kylin.job.admin.dls=adminstrator-address</code></pre></div> + +<p>Restart Kylin server to take effective. To disable, set <code class="highlighter-rouge">mail.enabled</code> back to <code class="highlighter-rouge">false</code>.</p> + +<p>Administrator will get notifications for all jobs. Modeler and Analyst need enter email address into the âNotification Listâ at the first page of cube wizard, and then will get notified for that cube.</p> + + </article> + </div> + </div> + </div> + </div> + </div> + <!-- +* Licensed to the Apache Software Foundation (ASF) under one +* or more contributor license agreements. See the NOTICE file +* distributed with this work for additional information +* regarding copyright ownership. The ASF licenses this file +* to you under the Apache License, Version 2.0 (the +* "License"); you may not use this file except in compliance +* with the License. You may obtain a copy of the License at +* +* http://www.apache.org/licenses/LICENSE-2.0 +* +* Unless required by applicable law or agreed to in writing, software +* distributed under the License is distributed on an "AS IS" BASIS, +* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +* See the License for the specific language governing permissions and +* limitations under the License. +--> + +<footer id="underfooter"> + <div class="container"> + <div class="row"> + <div class="col-md-12 widget"> + <div class="widget-body" style="text-align:center"> + <a href="http://www.apache.org";> + <img id="asf-logo" alt="Apache Software Foundation" src="/assets/images/feather-small.gif"> + </a> + + <div> + The contents of this website are © 2015 Apache Software Foundation under the terms of the <a + href="http://www.apache.org/licenses/LICENSE-2.0";> Apache License v2 </a>. Apache Kylin and + its logo are trademarks of the Apache Software Foundation. + </div> + + </div> + </div> + </div> + <!-- /row of widgets --> + + </div> + <div></div> + +</footer> + + <script src="/assets/js/jquery-1.9.1.min.js"></script> + <script src="/assets/js/bootstrap.min.js"></script> + <script src="/assets/js/main.js"></script> + </body> +</html>
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+ + + + + + + + + + + + + + + + + <li><a href="/docs23/howto/howto_install_ranger_kylin_plugin.html" class="list-group-item-lay pjaxlink" id="navlist">The Ranger Kylin Plugin Installation Guide</a></li> + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + <li><a href="/docs23/howto/howto_enable_zookeeper_acl.html" class="list-group-item-lay pjaxlink" id="navlist">Enable zookeeper acl</a></li> + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + <li><a href="/docs23/howto/howto_setup_systemcube.html" class="list-group-item-lay pjaxlink" id="navlist">Set Up System Cube</a></li> + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + <li><a href="/docs23/howto/howto_use_cube_planner.html" class="list-group-item-lay pjaxlink" id="navlist">Use Cube Planner</a></li> + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + <li><a href="/docs23/howto/howto_use_dashboard.html" class="list-group-item-lay pjaxlink" id="navlist">Use Dashboard</a></li> + + + + + + + + + <ul> + </div> +</div> + + + </ul> +</div> + + <div class="col-md-9 col-lg-9 col-xs-14 aside2"> + <div id="container"> + <div id="pjax"> + <h1 class="post-title">Hadoop Environment</h1> + + + <article class="post-content" > + <p>Kylin need run in a Hadoop node, to get better stability, we suggest you to deploy it a pure Hadoop client machine, on which the command lines like <code class="highlighter-rouge">hive</code>, <code class="highlighter-rouge">hbase</code>, <code class="highlighter-rouge">hadoop</code>, <code class="highlighter-rouge">hdfs</code> already be installed and configured. The Linux account that running Kylin has got permission to the Hadoop cluster, including create/write hdfs, hive tables, hbase tables and submit MR jobs.</p> + +<h2 id="minimal-hadoop-versions">Minimal Hadoop Versions</h2> + +<ul> + <li>Hadoop: 2.7+</li> + <li>Hive: 0.13 - 1.2.1+</li> + <li>HBase: 0.98 - 0.99, 1.1+</li> + <li>JDK: 1.7+</li> +</ul> + +<p><em>Tested with Hortonworks HDP 2.2 and Cloudera Quickstart VM 5.1. Windows and MacOS have known issues.</em></p> + +<p>To make things easier we strongly recommend you try Kylin with an all-in-one sandbox VM, like <a href="http://hortonworks.com/products/hortonworks-sandbox/";>HDP sandbox</a>, and give it 10 GB memory. In the following tutorial weâll go with <strong>Hortonworks Sandbox 2.1</strong> and <strong>Cloudera QuickStart VM 5.1</strong>.</p> + +<p>To avoid permission issue in the sandbox, you can use its <code class="highlighter-rouge">root</code> account. The password for <strong>Hortonworks Sandbox 2.1</strong> is <code class="highlighter-rouge">hadoop</code> , for <strong>Cloudera QuickStart VM 5.1</strong> is <code class="highlighter-rouge">cloudera</code>.</p> + +<p>We also suggest you using bridged mode instead of NAT mode in Virtual Box settings. Bridged mode will assign your sandbox an independent IP address so that you can avoid issues like <a href="https://github.com/KylinOLAP/Kylin/issues/12";>this</a>.</p> + +<h3 id="start-hadoop">Start Hadoop</h3> +<p>Use ambari helps to launch hadoop:</p> + +<div class="highlighter-rouge"><pre class="highlight"><code>ambari-agent start +ambari-server start +</code></pre> +</div> + +<p>With both command successfully run you can go to ambari homepage at <a href="http://your_sandbox_ip:8080";>http://your_sandbox_ip:8080</a> (user:admin,password:admin) to check everythingâs status. <strong>By default hortonworks ambari disables Hbase, you need manually start the <code class="highlighter-rouge">Hbase</code> service at ambari homepage.</strong></p> + + + </article> + </div> + </div> + </div> + </div> + </div> + <!-- +* Licensed to the Apache Software Foundation (ASF) under one +* or more contributor license agreements. 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