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Posted to commits@kylin.apache.org by li...@apache.org on 2019/08/01 14:04:53 UTC
svn commit: r1864154 [9/17] - in /kylin/site: ./ blog/ blog/2019/07/30/
blog/2019/07/30/detailed-analysis-of-refine-query-cache/ cn/docs30/
cn/docs30/gettingstarted/ cn/docs30/howto/ cn/docs30/install/
cn/docs30/tutorial/ docs30/ docs30/gettingstarted/...
Added: kylin/site/docs30/howto/howto_use_health_check_cli.html
URL: http://svn.apache.org/viewvc/kylin/site/docs30/howto/howto_use_health_check_cli.html?rev=1864154&view=auto
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--- kylin/site/docs30/howto/howto_use_health_check_cli.html (added)
+++ kylin/site/docs30/howto/howto_use_health_check_cli.html Thu Aug 1 14:04:52 2019
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+<!--
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+ <a href="/docs/tutorial/squirrel.html" class="list-group-item-lay pjaxlink">SQuirreL</a>
+ </li>
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+ <li class="navlist">
+ <a href="/docs/tutorial/flink.html" class="list-group-item-lay pjaxlink">Apache Flink</a>
+ </li>
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+ </li>
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+ <li class="navlist">
+ <a href="/docs/tutorial/hue.html" class="list-group-item-lay pjaxlink">Hue</a>
+ </li>
+
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+ <li class="navlist">
+ <a href="/docs/tutorial/Qlik.html" class="list-group-item-lay pjaxlink">Qlik Sense</a>
+ </li>
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+ <li class="navlist">
+ <a href="/docs/tutorial/superset.html" class="list-group-item-lay pjaxlink">Superset</a>
+ </li>
+
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+ <ul>
+ </li>
+
+ <li class="dropdown-submenu"><a href="#titleHow To" data-toggle="collapse" class="navtitle">How To</a>
+ <ul class="dropdown-menu">
+
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+
+
+ <li class="navlist">
+ <a href="/docs/howto/howto_use_restapi.html" class="list-group-item-lay pjaxlink">Use RESTful API</a>
+ </li>
+
+
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+
+
+ <li class="navlist">
+ <a href="/docs/howto/howto_build_cube_with_restapi.html" class="list-group-item-lay pjaxlink">Build Cube with API</a>
+ </li>
+
+
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+
+
+
+ <li class="navlist">
+ <a href="/docs/howto/howto_optimize_cubes.html" class="list-group-item-lay pjaxlink">Optimize Cube Design</a>
+ </li>
+
+
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+
+
+ <li class="navlist">
+ <a href="/docs/howto/howto_optimize_build.html" class="list-group-item-lay pjaxlink">Optimize Cube Build</a>
+ </li>
+
+
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+
+
+ <li class="navlist">
+ <a href="/docs/howto/howto_backup_metadata.html" class="list-group-item-lay pjaxlink">Backup Metadata</a>
+ </li>
+
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+
+
+ <li class="navlist">
+ <a href="/docs/howto/howto_cleanup_storage.html" class="list-group-item-lay pjaxlink">Cleanup Storage</a>
+ </li>
+
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+
+ <li class="navlist">
+ <a href="/docs/howto/howto_upgrade.html" class="list-group-item-lay pjaxlink">Upgrade From Old Versions</a>
+ </li>
+
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+ <li class="navlist">
+ <a href="/docs/howto/howto_use_cli.html" class="list-group-item-lay pjaxlink">Use Utility CLIs</a>
+ </li>
+
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+
+
+ <li class="navlist">
+ <a href="/docs/howto/howto_ldap_and_sso.html" class="list-group-item-lay pjaxlink">Secure with LDAP and SSO</a>
+ </li>
+
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+ <li class="navlist">
+ <a href="/docs/howto/howto_use_beeline.html" class="list-group-item-lay pjaxlink">Use Beeline for Hive</a>
+ </li>
+
+
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+ <li class="navlist">
+ <a href="/docs/howto/howto_update_coprocessor.html" class="list-group-item-lay pjaxlink">Update Coprocessor</a>
+ </li>
+
+
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+
+ <li class="navlist">
+ <a href="/docs/howto/howto_install_ranger_kylin_plugin.html" class="list-group-item-lay pjaxlink">Install Ranger Plugin</a>
+ </li>
+
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+ <li class="navlist">
+ <a href="/docs/howto/howto_enable_zookeeper_acl.html" class="list-group-item-lay pjaxlink">Enable Zookeeper ACL</a>
+ </li>
+
+
+
+
+
+
+
+
+ <ul>
+ </li>
+
+ </ul> -->
+ </li>
+ <li><a href="/download">Download</a></li>
+ <li><a href="/community" >Community</a></li>
+ <li><a href="/development" >Development</a></li>
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+ <li><a href="/cn" >ä¸æç</a></li>
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+ </nav>
+
+ <div id="head" class="parallax normal-header" >
+ <div class="text-center header-apache">
+ <a href="http://apache.org/foundation/contributing.html" title="Support Apache" style="margin-left: 150px;">
+ <div>
+ <img src="https://www.apache.org/images/SupportApache-small.png" >
+ </div>
+ </a>
+ </div>
+ </div>
+
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+
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+ <div class="container">
+ <div class="row" style="clear:both;">
+ <div class="col-md-8 col-lg-8 col-xs-12 col-sm-12 aside2" style="float:right;">
+ <div id="container" class="docs">
+ <div id="pjax">
+ <h1 class="post-title">Kylin Health Check(NEW)</h1>
+
+
+ <article class="post-content" >
+ <h2 id="get-started">Get started</h2>
+<p>In kylin 3.0, we add a health check job of Kylin which help to detect whether your Kylin is in good state. This will help to reduce manually work for Kylinâs Administrator. If you have hundreds of cubes and thousands of building job every day, this feature help you quickly find failed job and segment which lost file or hbase table, or cube with too high expansion rate.</p>
+
+<p>Use this feature by adding following to <em>kylin.properties</em> if you are using 126.com:</p>
+
+<div class="highlight"><pre><code class="language-groff" data-lang="groff">kylin.job.notification-enabled=true
+kylin.job.notification-mail-enable-starttls=true
+kylin.job.notification-mail-host=smtp.126.com
+kylin.job.notification-mail-username=hahaha@126.com
+kylin.job.notification-mail-password=hahaha
+kylin.job.notification-mail-sender=hahaha@126.com
+kylin.job.notification-admin-emails=hahaha@kyligence.io,hahaha@126.com</code></pre></div>
+<p>Â <br />
+After start the Kylin process, you should execute following command and get email received. In production env, it should be scheduled by crontab etc.</p>
+
+<div class="highlight"><pre><code class="language-groff" data-lang="groff">sh bin/kylin.sh org.apache.kylin.tool.KylinHealthCheckJob</code></pre></div>
+<p>Â <br />
+You will receive email in your mailbox.</p>
+
+<h2 id="detail-of-health-check-step">Detail of health check step</h2>
+
+<h3 id="checking-metadata">Checking metadata</h3>
+<p>This part will try record all path of entry which Kylin process failed to load from Metadata(ResourceStore). This maybe a signal of health state for Kylinâs Metadata Store.</p>
+
+<p>If find any error, it will be sent via email as following.</p>
+
+<div class="highlight"><pre><code class="language-groff" data-lang="groff">Error loading CubeDesc at ${PATH} ...
+Error loading DataModelDesc at ${PATH} ...</code></pre></div>
+
+<h3 id="fix-missing-hdfs-path-of-segments">Fix missing HDFS path of segments</h3>
+<p>This part will try to visit all segments and check whether segment file exists in HDFS.</p>
+
+<p>If find any error, it will be sent via email as following.</p>
+
+<div class="highlight"><pre><code class="language-groff" data-lang="groff">Project: ${PROJECT} cube: ${CUBE} segment: ${SEGMENT} cube id data: ${SEGMENT_PATH} don't exist and need to rebuild it</code></pre></div>
+
+<h3 id="checking-hbase-table-of-segments">Checking HBase Table of segments</h3>
+<p>This part will check whether HTable belong to each segment exists and state is Enable, you may need to rebuild them or re-enable them if find any.</p>
+
+<p>If find any error, it will be sent via email as following.</p>
+
+<div class="highlight"><pre><code class="language-groff" data-lang="groff">HBase table: {TABLE_NAME} not exist for segment: {SEGMENT}, project: {PROJECT}</code></pre></div>
+
+<h3 id="checking-holes-of-cubes">Checking holes of Cubes</h3>
+<p>This part will try to check segment holes of each cube, so lost segments need to be rebuilt if find any.</p>
+
+<p>If find any error, it will be sent via email as following.</p>
+
+<div class="highlight"><pre><code class="language-groff" data-lang="groff">{COUNT_HOLE} holes in cube: {CUBE_NAME}, project: {PROJECT_NAME}</code></pre></div>
+
+<h3 id="checking-too-many-segments-of-cubes">Checking too many segments of Cubes</h3>
+<p>This part will try to check cube which have too many segments, so they need to merged.</p>
+
+<p>If find any error, it will be sent via email as following.</p>
+
+<div class="highlight"><pre><code class="language-groff" data-lang="groff">Too many segments: {COUNT_OF_SEGMENT} for cube: {CUBE_NAME}, project: {PROJECT_NAME}, please merge the segments</code></pre></div>
+
+<p>The threshold is decided by <code class="highlighter-rouge">kylin.tool.health-check.warning-segment-num</code>, default value is <code class="highlighter-rouge">-1</code>, which means skip check.</p>
+
+<h3 id="checking-out-of-date-cubes">Checking out-of-date Cubes</h3>
+<p>This part will try to find cube which have not been built for a long duration, so maybe you donât really need them.</p>
+
+<p>If find any error, it will be sent via email as following.</p>
+
+<div class="highlight"><pre><code class="language-groff" data-lang="groff">Ready Cube: {CUBE_NAME} in project: {PROJECT_NAME} is not built more then {DAYS} days, maybe it can be disabled
+Disabled Cube: {CUBE_NAME} in project: {PROJECT_NAME} is not built more then {DAYS} days, maybe it can be deleted</code></pre></div>
+
+<p>The threshold is decided by <code class="highlighter-rouge">kylin.tool.health-check.stale-cube-threshold-days</code>, default value is <code class="highlighter-rouge">100</code>.</p>
+
+<h3 id="check-data-expansion-rate">Check data expansion rate</h3>
+<p>This part will try to check cube have high expansion rate, so you may consider optimize them.</p>
+
+<p>If find any error, it will be sent via stdout as following.</p>
+
+<div class="highlight"><pre><code class="language-groff" data-lang="groff">Cube: {CUBE_NAME} in project: {PROJECT_NAME} with too large expansion rate: {RATE}, cube data size: {SIZE}G</code></pre></div>
+
+<p>The expansion rate warning threshold is decided by <code class="highlighter-rouge">kylin.tool.health-check.warning-cube-expansion-rate</code>.<br />
+The cube-size warning threshold is decided by <code class="highlighter-rouge">kylin.tool.health-check.expansion-check.min-cube-size-gb</code>.</p>
+
+<h3 id="check-cube-configuration">Check cube configuration</h3>
+
+<p>This part will try to check cube has been set with auto merge & retention configuration.</p>
+
+<p>If find any error, it will be sent via stdout as following.</p>
+
+<div class="highlight"><pre><code class="language-groff" data-lang="groff">Cube: {CUBE_NAME} in project: {PROJECT_NAME} with no auto merge params
+Cube: {CUBE_NAME} in project: {PROJECT_NAME} with no retention params</code></pre></div>
+<p>Â </p>
+
+<h3 id="cleanup-stopped-job">Cleanup stopped job</h3>
+
+<p>Stopped and Error jobs which have not be repaired in time will be alarmed if find any.</p>
+
+<div class="highlight"><pre><code class="language-groff" data-lang="groff">Should discard job: {}, which in ERROR/STOPPED state for {} days</code></pre></div>
+<p>Â </p>
+
+<p>The duration is set by <code class="highlighter-rouge">kylin.tool.health-check.stale-job-threshold-days</code>, default is <code class="highlighter-rouge">30</code>.</p>
+
+<hr />
+
+<p>For the detail of HealthCheck, please check code at <em>org.apache.kylin.rest.job.KylinHealthCheckJob</em> in Github Repo. <br />
+If you have more suggestion or want to add more check rule, please submit a PR to master branch.</p>
+
+ </article>
+ </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
+*
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+* See the License for the specific language governing permissions and
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+ </li>
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+ </li>
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+ <li class="navlist">
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+ </li>
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+ </li>
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+ <li class="navlist">
+ <a href="/docs30/tutorial/realtime_olap.html" class="list-group-item-lay pjaxlink">Real-time OLAP</a>
+ </li>
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+ <li class="navlist">
+ <a href="/docs30/tutorial/cube_build_performance.html" class="list-group-item-lay pjaxlink">Cube Build Tuning</a>
+ </li>
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+ <li class="navlist">
+ <a href="/docs30/tutorial/setup_systemcube.html" class="list-group-item-lay pjaxlink">Set Up System Cube</a>
+ </li>
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+ <li class="navlist">
+ <a href="/docs30/tutorial/use_cube_planner.html" class="list-group-item-lay pjaxlink">Use Cube Planner</a>
+ </li>
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+ <li class="navlist">
+ <a href="/docs30/tutorial/use_dashboard.html" class="list-group-item-lay pjaxlink">Use Dashboard</a>
+ </li>
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+ <li class="navlist">
+ <a href="/docs30/tutorial/setup_jdbc_datasource.html" class="list-group-item-lay pjaxlink">Setup JDBC Data Source</a>
+ </li>
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+ <li class="navlist">
+ <a href="/docs30/tutorial/hybrid.html" class="list-group-item-lay pjaxlink">Hybrid Model</a>
+ </li>
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+ <li class="navlist">
+ <a href="/docs30/tutorial/mysql_metastore.html" class="list-group-item-lay pjaxlink">Use MySQL as Metastore</a>
+ </li>
+
+
+
+
+
+
+
+
+ <ul>
+ </div>
+</div>
+
+ <li><a href="#titleIntegration" data-toggle="collapse" id="navtitle">Integration</a></li>
+ <div class="collapse in">
+ <div class="list-group" id="list1">
+ <ul>
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+ <li class="navlist">
+ <a href="/docs30/tutorial/odbc.html" class="list-group-item-lay pjaxlink">Kylin ODBC Driver</a>
+ </li>
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+ <li class="navlist">
+ <a href="/docs30/tutorial/jdbc.html" class="list-group-item-lay pjaxlink">Kylin JDBC Driver</a>
+ </li>
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+ <li class="navlist">
+ <a href="/docs30/tutorial/tableau.html" class="list-group-item-lay pjaxlink">Tableau 8</a>
+ </li>
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+ <a href="/docs30/tutorial/tableau_91.html" class="list-group-item-lay pjaxlink">Tableau 9</a>
+ </li>
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+ <li class="navlist">
+ <a href="/docs30/tutorial/powerbi.html" class="list-group-item-lay pjaxlink">MS Excel and Power BI</a>
+ </li>
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+ <li class="navlist">
+ <a href="/docs30/tutorial/microstrategy.html" class="list-group-item-lay pjaxlink">MicroStrategy</a>
+ </li>
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+ <li class="navlist">
+ <a href="/docs30/tutorial/squirrel.html" class="list-group-item-lay pjaxlink">SQuirreL</a>
+ </li>
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+ <li class="navlist">
+ <a href="/docs30/tutorial/flink.html" class="list-group-item-lay pjaxlink">Apache Flink</a>
+ </li>
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+ <li class="navlist">
+ <a href="/docs30/tutorial/spark.html" class="list-group-item-lay pjaxlink">Apache Spark</a>
+ </li>
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+ <li class="navlist">
+ <a href="/docs30/tutorial/hue.html" class="list-group-item-lay pjaxlink">Hue</a>
+ </li>
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+ <li class="navlist">
+ <a href="/docs30/tutorial/Qlik.html" class="list-group-item-lay pjaxlink">Qlik Sense</a>
+ </li>
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+ <li class="navlist">
+ <a href="/docs30/tutorial/superset.html" class="list-group-item-lay pjaxlink">Superset</a>
+ </li>
+
+
+
+
+
+
+
+
+ <ul>
+ </div>
+</div>
+
+ <li><a href="#titleHow To" data-toggle="collapse" id="navtitle">How To</a></li>
+ <div class="collapse in">
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