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See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file @@ -174,29 +270,74 @@ 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. --> -<div class="section"> - <div class="page-header"> - <h2 id="Introduction">Introduction</h2> - </div> - <p> Apache HBase (TM) emits Hadoop <a class="externalLink" href="http://hadoop.apache.org/core/docs/current/api/org/apache/hadoop/metrics/package-summary.html";>metrics</a>. </p> -</div> -<div class="section"> - <h2 id="Setup">Setup</h2> - <p>First read up on Hadoop <a class="externalLink" href="http://hadoop.apache.org/core/docs/current/api/org/apache/hadoop/metrics/package-summary.html";>metrics</a>. If you are using ganglia, the <a class="externalLink" href="http://wiki.apache.org/hadoop/GangliaMetrics";>GangliaMetrics</a> wiki page is useful read.</p> - <p>To have HBase emit metrics, edit <tt>$HBASE_HOME/conf/hadoop-metrics.properties</tt> and enable metric 'contexts' per plugin. As of this writing, hadoop supports <b>file</b> and <b>ganglia</b> plugins. Yes, the hbase metrics files is named hadoop-metrics rather than <i>hbase-metrics</i> because currently at least the hadoop metrics system has the properties filename hardcoded. Per metrics <i>context</i>, comment out the NullContext and enable one or more plugins instead. </p> - <p> If you enable the <i>hbase</i> context, on regionservers you'll see total requests since last metric emission, count of regions and storefiles as well as a count of memstore size. On the master, you'll see a count of the cluster's requests. </p> - <p> Enabling the <i>rpc</i> context is good if you are interested in seeing metrics on each hbase rpc method invocation (counts and time taken). </p> - <p> The <i>jvm</i> context is useful for long-term stats on running hbase jvms -- memory used, thread counts, etc. As of this writing, if more than one jvm is running emitting metrics, at least in ganglia, the stats are aggregated rather than reported per instance. </p> -</div> -<div class="section"> - <h2 id="Using_with_JMX">Using with JMX</h2> - <p> In addition to the standard output contexts supported by the Hadoop metrics package, you can also export HBase metrics via Java Management Extensions (JMX). This will allow viewing HBase stats in JConsole or any other JMX client. </p> - <div class="section"> - <h2 id="Enable_HBase_stats_collection">Enable HBase stats collection</h2> - <p> To enable JMX support in HBase, first edit <tt>$HBASE_HOME/conf/hadoop-metrics.properties</tt> to support metrics refreshing. (If you've running 0.94.1 and above, or have already configured <tt>hadoop-metrics.properties</tt> for another output context, you can skip this step). </p> - <div class="source"> - <pre> +under the License. --> + + <div class="section"> +<h2><a name="Introduction"></a>Introduction</h2> + +<p> + Apache HBase (TM) emits Hadoop <a class="externalLink" href="http://hadoop.apache.org/core/docs/current/api/org/apache/hadoop/metrics/package-summary.html";>metrics</a>. + </p> + </div> + +<div class="section"> +<h2><a name="Setup"></a>Setup</h2> + +<p>First read up on Hadoop <a class="externalLink" href="http://hadoop.apache.org/core/docs/current/api/org/apache/hadoop/metrics/package-summary.html";>metrics</a>. + If you are using ganglia, the <a class="externalLink" href="http://wiki.apache.org/hadoop/GangliaMetrics";>GangliaMetrics</a> + wiki page is useful read.</p> + +<p>To have HBase emit metrics, edit <tt>$HBASE_HOME/conf/hadoop-metrics.properties</tt> + and enable metric 'contexts' per plugin. As of this writing, hadoop supports + <b>file</b> and <b>ganglia</b> plugins. + Yes, the hbase metrics files is named hadoop-metrics rather than + <i>hbase-metrics</i> because currently at least the hadoop metrics system has the + properties filename hardcoded. Per metrics <i>context</i>, + comment out the NullContext and enable one or more plugins instead. + </p> + +<p> + If you enable the <i>hbase</i> context, on regionservers you'll see total requests since last + metric emission, count of regions and storefiles as well as a count of memstore size. + On the master, you'll see a count of the cluster's requests. + </p> + +<p> + Enabling the <i>rpc</i> context is good if you are interested in seeing + metrics on each hbase rpc method invocation (counts and time taken). + </p> + +<p> + The <i>jvm</i> context is + useful for long-term stats on running hbase jvms -- memory used, thread counts, etc. + As of this writing, if more than one jvm is running emitting metrics, at least + in ganglia, the stats are aggregated rather than reported per instance. + </p> + </div> + + +<div class="section"> +<h2><a name="Using_with_JMX"></a>Using with JMX</h2> + +<p> + In addition to the standard output contexts supported by the Hadoop + metrics package, you can also export HBase metrics via Java Management + Extensions (JMX). This will allow viewing HBase stats in JConsole or + any other JMX client. + </p> + +<div class="section"> +<h2><a name="Enable_HBase_stats_collection"></a>Enable HBase stats collection</h2> + +<p> + To enable JMX support in HBase, first edit + <tt>$HBASE_HOME/conf/hadoop-metrics.properties</tt> to support + metrics refreshing. (If you've running 0.94.1 and above, or have already configured + <tt>hadoop-metrics.properties</tt> for another output context, + you can skip this step). + </p> + +<div class="source"><pre class="prettyprint"> # Configuration of the "hbase" context for null hbase.class=org.apache.hadoop.metrics.spi.NullContextWithUpdateThread hbase.period=60 @@ -208,170 +349,111 @@ jvm.period=60 # Configuration of the "rpc" context for null rpc.class=org.apache.hadoop.metrics.spi.NullContextWithUpdateThread rpc.period=60 - </pre> - </div> - </div> - <div class="section"> - <h2 id="Setup_JMX_remote_access">Setup JMX remote access</h2> - <p> For remote access, you will need to configure JMX remote passwords and access profiles. Create the files: </p> - <dl> - <dt> - <tt>$HBASE_HOME/conf/jmxremote.passwd</tt> (set permissions to 600) - </dt> - <dd> - <div class="source"> - <pre> + </pre></div> + </div> + +<div class="section"> +<h2><a name="Setup_JMX_remote_access"></a>Setup JMX remote access</h2> + +<p> + For remote access, you will need to configure JMX remote passwords + and access profiles. Create the files: + </p> + +<dl> + +<dt><tt>$HBASE_HOME/conf/jmxremote.passwd</tt> (set permissions + to 600)</dt> + +<dd> + +<div class="source"><pre class="prettyprint"> monitorRole monitorpass controlRole controlpass - </pre> - </div> - </dd> - <dt> - <tt>$HBASE_HOME/conf/jmxremote.access</tt> - </dt> - <dd> - <div class="source"> - <pre> + </pre></div> + </dd> + + +<dt><tt>$HBASE_HOME/conf/jmxremote.access</tt></dt> + +<dd> + +<div class="source"><pre class="prettyprint"> monitorRole readonly controlRole readwrite - </pre> - </div> - </dd> - </dl> - </div> - <div class="section"> - <h2 id="Configure_JMX_in_HBase_startup">Configure JMX in HBase startup</h2> - <p> Finally, edit the <tt>$HBASE_HOME/conf/hbase-env.sh</tt> script to add JMX support: </p> - <dl> - <dt> - <tt>$HBASE_HOME/conf/hbase-env.sh</tt> - </dt> - <dd> - <p>Add the lines:</p> - <div class="source"> - <pre> + </pre></div> + </dd> + </dl> + </div> + +<div class="section"> +<h2><a name="Configure_JMX_in_HBase_startup"></a>Configure JMX in HBase startup</h2> + +<p> + Finally, edit the <tt>$HBASE_HOME/conf/hbase-env.sh</tt> + script to add JMX support: + </p> + +<dl> + +<dt><tt>$HBASE_HOME/conf/hbase-env.sh</tt></dt> + +<dd> + +<p>Add the lines:</p> + +<div class="source"><pre class="prettyprint"> HBASE_JMX_OPTS="-Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.ssl=false" HBASE_JMX_OPTS="$HBASE_JMX_OPTS -Dcom.sun.management.jmxremote.password.file=$HBASE_HOME/conf/jmxremote.passwd" HBASE_JMX_OPTS="$HBASE_JMX_OPTS -Dcom.sun.management.jmxremote.access.file=$HBASE_HOME/conf/jmxremote.access" export HBASE_MASTER_OPTS="$HBASE_JMX_OPTS -Dcom.sun.management.jmxremote.port=10101" export HBASE_REGIONSERVER_OPTS="$HBASE_JMX_OPTS -Dcom.sun.management.jmxremote.port=10102" - </pre> - </div> - </dd> - </dl> - <p> After restarting the processes you want to monitor, you should now be able to run JConsole (included with the JDK since JDK 5.0) to view the statistics via JMX. HBase MBeans are exported under the <b><tt>hadoop</tt></b> domain in JMX. </p> - </div> - <div class="section"> - <h2 id="Understanding_HBase_Metrics">Understanding HBase Metrics</h2> - <p> For more information on understanding HBase metrics, see the <a href="book.html#hbase_metrics">metrics section</a> in the Apache HBase Reference Guide. </p> - </div> -</div> - </div> - </div> - </div> - </div> - - </div><!-- /container --> - - <!-- Footer - ================================================== --> - <footer class="well"> - <div class="container"> - <div class="row"> - <div class="span3 bottom-nav"> - <ul class="nav nav-list"> - <li class="nav-header">Apache HBase Project</li> - <li > - <a href="index.html" title="Overview">Overview</a> - </li> - <li > - <a href="license.html" title="License">License</a> - </li> - <li > - <a href="http://www.apache.org/dyn/closer.cgi/hbase/"; title="Downloads" class="externalLink">Downloads</a> - </li> - <li > - <a href="https://issues.apache.org/jira/browse/HBASE?report=com.atlassian.jira.plugin.system.project:changelog-panel#selectedTab=com.atlassian.jira.plugin.system.project%3Achangelog-panel"; title="Release Notes" class="externalLink">Release Notes</a> - </li> - <li > - <a href="coc.html" title="Code Of Conduct">Code Of Conduct</a> - </li> - <li > - <a href="http://blogs.apache.org/hbase/"; title="Blog" class="externalLink">Blog</a> - </li> - <li > - <a href="mail-lists.html" title="Mailing Lists">Mailing Lists</a> - </li> - <li > - <a href="team-list.html" title="Team">Team</a> - </li> - <li > - <a href="https://reviews.apache.org/"; title="ReviewBoard" class="externalLink">ReviewBoard</a> - </li> - <li > - <a href="sponsors.html" title="Thanks">Thanks</a> - </li> - <li > - <a href="poweredbyhbase.html" title="Powered by HBase">Powered by HBase</a> - </li> - <li > - <a href="resources.html" title="Other resources">Other resources</a> - </li> - </ul> - </div> - <div class="span3 bottom-nav"> - <ul class="nav nav-list"> - </ul> - </div> - <div class="span3 bottom-nav"> - <ul class="nav nav-list"> - <li class="nav-header">0.94 Documentation</li> - <li > - <a href="0.94/apidocs/index.html" title="API" target="_blank">API</a> - </li> - <li > - <a href="0.94/xref/index.html" title="X-Ref" target="_blank">X-Ref</a> - </li> - <li > - <a href="0.94/book.html" title="Ref Guide (single-page)" target="_blank">Ref Guide (single-page)</a> - </li> - <li class="nav-header">ASF</li> - <li > - <a href="http://www.apache.org/foundation/"; title="Apache Software Foundation" target="_blank" class="externalLink">Apache Software Foundation</a> - </li> - <li > - <a href="http://www.apache.org/foundation/how-it-works.html"; title="How Apache Works" target="_blank" class="externalLink">How Apache Works</a> - </li> - <li > - <a href="http://www.apache.org/foundation/sponsorship.html"; title="Sponsoring Apache" target="_blank" class="externalLink">Sponsoring Apache</a> - </li> - </ul> - </div> - </div> - </div> - </footer> - - <div class="container subfooter"> - <div class="row"> - <div class="span12"> - <p class="pull-right"><a href="#">Back to top</a></p> - <p class="copyright">Copyright ©2007-2015 <a href="http://www.apache.org/";>The Apache Software Foundation</a>. 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HBase MBeans are exported under the + <b><tt>hadoop</tt></b> domain in JMX. + </p> + </div> + +<div class="section"> +<h2><a name="Understanding_HBase_Metrics"></a>Understanding HBase Metrics</h2> + +<p> + For more information on understanding HBase metrics, see the <a href="book.html#hbase_metrics">metrics section</a> in the Apache HBase Reference Guide. + </p> + </div> + </div> + - <!-- Le javascript - ================================================== --> - <!-- Placed at the end of the document so the pages load faster --> - <script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script> + </div> + </div> - <script src="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/js/bootstrap.min.js"></script> - <script src="./js/lightbox.min.js"></script> - <script src="./js/reflow-scroll.js"></script> + <hr/> - <script src="./js/reflow-skin.js"></script> + <footer> + <div class="container"> + <div class="row"> + <p >Copyright © 2007–2015 + <a href="http://www.apache.org/";>The Apache Software Foundation</a>. + All rights reserved. + + <li id="publishDate" class="pull-right">Last Published: 2015-11-05</li> + </p> + </div> - </body> + <p id="poweredBy" class="pull-right"> + <a href="http://maven.apache.org/"; title="Built by Maven" class="poweredBy"> + <img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /> + </a> + </p> + + </div> + </footer> + </body> </html>
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<td>Module that does project assembly and that is all that it does.</td> - </tr> - <tr class="a"> - <td><a href="hbase-testing-util/index.html">Apache HBase - Testing Util</a></td> - <td>HBase Testing Utilities.</td> - </tr> - <tr class="b"> - <td><a href="hbase-annotations/index.html">Apache HBase - Annotations</a></td> - <td>Copy of Hadoop's annotations for HBase</td> - </tr> - <tr class="a"> - <td><a href="hbase-rest/index.html">Apache HBase - Rest</a></td> - <td>HBase Rest Server</td> - </tr> - <tr class="b"> - <td><a href="hbase-checkstyle/index.html">Apache HBase - Checkstyle</a></td> - <td>Module to hold Checkstyle properties for HBase.</td> - </tr> - <tr class="a"> - <td><a href="hbase-external-blockcache/index.html">Apache HBase - External Block Cache</a></td> - <td>HBase module that provides out of process block cache. Currently Memcached is the reference implementation for external block cache. External block caches allow HBase to take advantage of other more complex caches that can live longer than the HBase regionserver process and are not necessarily tied to a single computer life time. However external block caches add in extra operational overhead.</td> - </tr> - <tr class="b"> - <td><a href="hbase-shaded/hbase-shaded-client/index.html">Apache HBase - Shaded - Client</a></td> - <td>Module of HBase with most deps shaded.</td> - </tr> - <tr class="a"> - <td><a href="hbase-shaded/hbase-shaded-server/index.html">Apache HBase - Shaded - Server</a></td> - <td>Module of HBase with most deps shaded.</td> - </tr> - <tr class="b"> - <td><a href="hbase-shaded/index.html">Apache HBase - Shaded</a></td> - <td>Module of HBase with most deps shaded.</td> - </tr> - <tr class="a"> - <td><a href="hbase-spark/index.html">Apache HBase - Spark</a></td> - <td>Apache HBase is the Hadoop database. Use it when you need random, realtime read/write access to your Big Data. This project's goal is the hosting of very large tables -- billions of rows X millions of columns -- atop clusters of commodity hardware.</td> - </tr> - <tr class="b"> - <td><a href="hbase-hadoop2-compat/index.html">Apache HBase - Hadoop Two Compatibility</a></td> - <td>Interfaces to be implemented in order to smooth over hadoop version differences</td> - </tr> - </tbody> - </table> -</div> - </div> - </div> - </div> - </div> + + +<meta content="width=device-width, initial-scale=1.0" name="viewport"></meta> + + +<link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/8.9.1/styles/github.min.css"/> + + +<link rel="stylesheet" href="css/site.css"/> + + +<script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/8.9.1/highlight.min.js"></script> + + </head> + <body class="topBarEnabled"> + + + + - </div><!-- /container --> + <div id="topbar" class="navbar navbar-fixed-top "> + <div class="navbar-inner"> + <div class="container" style="width: 98%;"><div class="nav-collapse"> + + + <ul class="nav"> + <li class="dropdown"> + <a href="#" class="dropdown-toggle" data-toggle="dropdown">Apache HBase Project <b class="caret"></b></a> + <ul class="dropdown-menu"> + + <li> <a href="index.html" title="Overview">Overview</a> +</li> + + <li> <a href="license.html" title="License">License</a> +</li> + + <li> <a href="http://www.apache.org/dyn/closer.cgi/hbase/"; 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However external block caches add in extra operational overhead.</td></tr> +<tr class="b"> +<td><a href="hbase-shaded/hbase-shaded-client/index.html">Apache HBase - Shaded - Client</a></td> +<td>Module of HBase with most deps shaded.</td></tr> +<tr class="a"> +<td><a href="hbase-shaded/hbase-shaded-server/index.html">Apache HBase - Shaded - Server</a></td> +<td>Module of HBase with most deps shaded.</td></tr> +<tr class="b"> +<td><a href="hbase-shaded/index.html">Apache HBase - Shaded</a></td> +<td>Module of HBase with most deps shaded.</td></tr> +<tr class="a"> +<td><a href="hbase-spark/index.html">Apache HBase - Spark</a></td> +<td>Apache HBase™ is the Hadoop database. Use it when you need + random, realtime read/write access to your Big Data. + This project's goal is the hosting of very large tables -- billions of rows X millions of columns -- atop clusters + of commodity hardware.</td></tr> +<tr class="b"> +<td><a href="hbase-hadoop2-compat/index.html">Apache HBase - Hadoop Two Compatibility</a></td> +<td>Interfaces to be implemented in order to smooth + over hadoop version differences</td></tr></table></div> + </div> + </div> - <script src="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.2/js/bootstrap.min.js"></script> - <script src="./js/lightbox.min.js"></script> - <script src="./js/reflow-scroll.js"></script> + <hr/> - <script src="./js/reflow-skin.js"></script> + <footer> + <div class="container"> + <div class="row"> + <p >Copyright © 2007–2015 + <a href="http://www.apache.org/";>The Apache Software Foundation</a>. + All rights reserved. + + <li id="publishDate" class="pull-right">Last Published: 2015-11-05</li> + </p> + </div> - </body> + <p id="poweredBy" class="pull-right"> + <a href="http://maven.apache.org/"; title="Built by Maven" class="poweredBy"> + <img class="builtBy" alt="Built by Maven" src="./images/logos/maven-feather.png" /> + </a> + </p> + + </div> + </footer> + </body> </html>
