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<div class="subTitle">org.apache.hadoop.hbase.master.balancer</div>
<h2 title="Class LoadBalancerPerformanceEvaluation" class="title">Class LoadBalancerPerformanceEvaluation</h2>
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<ul class="inheritance">
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<ul class="inheritance">
<li>org.apache.hadoop.hbase.util.AbstractHBaseTool</li>
<li>
<ul class="inheritance">
<li>org.apache.hadoop.hbase.master.balancer.LoadBalancerPerformanceEvaluation</li>
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<dt>All Implemented Interfaces:</dt>
<dd>org.apache.hadoop.conf.Configurable, org.apache.hadoop.util.Tool</dd>
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<br>
<pre>@InterfaceAudience.LimitedPrivate(value="Tools")
public class <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#line.56">LoadBalancerPerformanceEvaluation</a>
extends org.apache.hadoop.hbase.util.AbstractHBaseTool</pre>
<div class="block">Tool to test performance of different <code>LoadBalancer</code>
implementations.
Example command:
$ bin/hbase org.apache.hadoop.hbase.master.balancer.LoadBalancerPerformanceEvaluation
-regions 1000 -servers 100
-load_balancer org.apache.hadoop.hbase.master.balancer.SimpleLoadBalancer</div>
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<h3>Nested classes/interfaces inherited from class&nbsp;org.apache.hadoop.hbase.util.AbstractHBaseTool</h3>
<code>org.apache.hadoop.hbase.util.AbstractHBaseTool.OptionsOrderComparator</code></li>
</ul>
</li>
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<h3>Field Summary</h3>
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<caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#DEFAULT_LOAD_BALANCER">DEFAULT_LOAD_BALANCER</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#DEFAULT_NUM_REGIONS">DEFAULT_NUM_REGIONS</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#DEFAULT_NUM_SERVERS">DEFAULT_NUM_SERVERS</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private static org.apache.hbase.thirdparty.org.apache.commons.cli.Option</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#LOAD_BALANCER_OPT">LOAD_BALANCER_OPT</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private org.apache.hadoop.hbase.master.LoadBalancer</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#loadBalancer">loadBalancer</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a>&lt;?&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#loadBalancerClazz">loadBalancerClazz</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#loadBalancerType">loadBalancerType</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private static org.slf4j.Logger</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#LOG">LOG</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private static org.apache.hbase.thirdparty.org.apache.commons.cli.Option</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#NUM_REGIONS_OPT">NUM_REGIONS_OPT</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private static org.apache.hbase.thirdparty.org.apache.commons.cli.Option</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#NUM_SERVERS_OPT">NUM_SERVERS_OPT</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#numRegions">numRegions</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#numServers">numServers</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;org.apache.hadoop.hbase.client.RegionInfo&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#regions">regions</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;org.apache.hadoop.hbase.client.RegionInfo,org.apache.hadoop.hbase.ServerName&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#regionServerMap">regionServerMap</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;org.apache.hadoop.hbase.ServerName,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;org.apache.hadoop.hbase.client.RegionInfo&gt;&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#serverRegionMap">serverRegionMap</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;org.apache.hadoop.hbase.ServerName&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#servers">servers</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected static <a href="../../../../../../org/apache/hadoop/hbase/HBaseCommonTestingUtility.html" title="class in org.apache.hadoop.hbase">HBaseCommonTestingUtility</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#UTIL">UTIL</a></span></code>&nbsp;</td>
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<h3>Fields inherited from class&nbsp;org.apache.hadoop.hbase.util.AbstractHBaseTool</h3>
<code>cmdLineArgs, conf, EXIT_FAILURE, EXIT_SUCCESS, LONG_HELP_OPTION, options, SHORT_HELP_OPTION</code></li>
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<h3>Constructor Summary</h3>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#LoadBalancerPerformanceEvaluation--">LoadBalancerPerformanceEvaluation</a></span>()</code>&nbsp;</td>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#addOptions--">addOptions</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>protected int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#doWork--">doWork</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#formatResults-java.lang.String-long-">formatResults</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;methodName,
long&nbsp;timeMillis)</code>&nbsp;</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>private void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#generateRegionsAndServers--">generateRegionsAndServers</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#main-java.lang.String:A-">main</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>[]&nbsp;args)</code>&nbsp;</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#processOptions-org.apache.hbase.thirdparty.org.apache.commons.cli.CommandLine-">processOptions</a></span>(org.apache.hbase.thirdparty.org.apache.commons.cli.CommandLine&nbsp;cmd)</code>&nbsp;</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>private void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#setupConf--">setupConf</a></span>()</code>&nbsp;</td>
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<h3>Methods inherited from class&nbsp;org.apache.hadoop.hbase.util.AbstractHBaseTool</h3>
<code>addOption, addOptNoArg, addOptNoArg, addOptWithArg, addOptWithArg, addRequiredOption, addRequiredOptWithArg, addRequiredOptWithArg, doStaticMain, getConf, getOptionAsDouble, getOptionAsInt, getOptionAsLong, newParser, parseArgs, parseInt, parseLong, printUsage, printUsage, processOldArgs, run, setConf</code></li>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li>
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<h3>Field Detail</h3>
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<h4>LOG</h4>
<pre>private static final&nbsp;org.slf4j.Logger <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#line.57">LOG</a></pre>
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<pre>protected static final&nbsp;<a href="../../../../../../org/apache/hadoop/hbase/HBaseCommonTestingUtility.html" title="class in org.apache.hadoop.hbase">HBaseCommonTestingUtility</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#line.60">UTIL</a></pre>
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<pre>private static final&nbsp;int <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#line.62">DEFAULT_NUM_REGIONS</a></pre>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../../constant-values.html#org.apache.hadoop.hbase.master.balancer.LoadBalancerPerformanceEvaluation.DEFAULT_NUM_REGIONS">Constant Field Values</a></dd>
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<pre>private static&nbsp;org.apache.hbase.thirdparty.org.apache.commons.cli.Option <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#line.63">NUM_REGIONS_OPT</a></pre>
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<pre>private static final&nbsp;int <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#line.66">DEFAULT_NUM_SERVERS</a></pre>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../../constant-values.html#org.apache.hadoop.hbase.master.balancer.LoadBalancerPerformanceEvaluation.DEFAULT_NUM_SERVERS">Constant Field Values</a></dd>
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<pre>private static&nbsp;org.apache.hbase.thirdparty.org.apache.commons.cli.Option <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#line.67">NUM_SERVERS_OPT</a></pre>
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<pre>private&nbsp;int <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#line.75">numRegions</a></pre>
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<pre>public&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#line.56">LoadBalancerPerformanceEvaluation</a>()</pre>
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<pre>private&nbsp;void&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#line.89">setupConf</a>()</pre>
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<pre>protected&nbsp;void&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#line.126">addOptions</a>()</pre>
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<pre>public static&nbsp;void&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/LoadBalancerPerformanceEvaluation.html#line.182">main</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>[]&nbsp;args)
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