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<div class="subTitle">org.apache.hadoop.hbase.master.balancer</div>
<h2 title="Class BaseLoadBalancer.Cluster" class="title">Class BaseLoadBalancer.Cluster</h2>
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<li>org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.Cluster</li>
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<dt>Enclosing class:</dt>
<dd><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html" title="class in org.apache.hadoop.hbase.master.balancer">BaseLoadBalancer</a></dd>
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<pre>protected static class <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#line.141">BaseLoadBalancer.Cluster</a>
extends <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></pre>
<div class="block">An efficient array based implementation similar to ClusterState for keeping
the status of the cluster in terms of region assignment and distribution.
LoadBalancers, such as StochasticLoadBalancer uses this Cluster object because of
hundreds of thousands of hashmap manipulations are very costly, which is why this
class uses mostly indexes and arrays.
Cluster tracks a list of unassigned regions, region assignments, and the server
topology in terms of server names, hostnames and racks.</div>
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<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Class and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.Action.html" title="class in org.apache.hadoop.hbase.master.balancer">BaseLoadBalancer.Cluster.Action</a></span></code>
<div class="block">An action to move or swap a region</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.AssignRegionAction.html" title="class in org.apache.hadoop.hbase.master.balancer">BaseLoadBalancer.Cluster.AssignRegionAction</a></span></code>&nbsp;</td>
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<tr class="altColor">
<td class="colFirst"><code>(package private) static class&nbsp;</code></td>
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<tr class="rowColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
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<tr class="altColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
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<td class="colFirst"><code>(package 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;<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>,<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;<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>&gt;&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#clusterState">clusterState</a></span></code>&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><code>(package private) boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#hasRegionReplicas">hasRegionReplicas</a></span></code>&nbsp;</td>
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<tr class="altColor">
<td class="colFirst"><code>(package 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/BaseLoadBalancer.Cluster.html#hosts">hosts</a></span></code>&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><code>(package 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;<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>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#hostsToIndex">hostsToIndex</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>(package private) int[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#initialRegionIndexToServerIndex">initialRegionIndexToServerIndex</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>(package private) float[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#localityPerServer">localityPerServer</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>(package private) boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#multiServersPerHost">multiServersPerHost</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.Action.html" title="class in org.apache.hadoop.hbase.master.balancer">BaseLoadBalancer.Cluster.Action</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#NullAction">NullAction</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>(package private) int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#numHosts">numHosts</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>(package private) int[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#numMaxRegionsPerTable">numMaxRegionsPerTable</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>(package private) int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#numMovedRegions">numMovedRegions</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>(package private) int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#numRacks">numRacks</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>(package private) int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#numRegions">numRegions</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/Comparator.html?is-external=true" title="class or interface in java.util">Comparator</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#numRegionsComparator">numRegionsComparator</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>(package private) int[][]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#numRegionsPerServerPerTable">numRegionsPerServerPerTable</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>(package private) int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#numServers">numServers</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>(package private) int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#numTables">numTables</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>(package private) int[][]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#primariesOfRegionsPerHost">primariesOfRegionsPerHost</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>(package private) int[][]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#primariesOfRegionsPerRack">primariesOfRegionsPerRack</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>(package private) int[][]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#primariesOfRegionsPerServer">primariesOfRegionsPerServer</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private float[][]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#rackLocalities">rackLocalities</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected <a href="../../../../../../org/apache/hadoop/hbase/master/RackManager.html" title="class in org.apache.hadoop.hbase.master">RackManager</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#rackManager">rackManager</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>(package 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/BaseLoadBalancer.Cluster.html#racks">racks</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>(package 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;<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>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#racksToIndex">racksToIndex</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/RegionHDFSBlockLocationFinder.html" title="class in org.apache.hadoop.hbase.master.balancer">RegionHDFSBlockLocationFinder</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#regionFinder">regionFinder</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>(package private) int[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#regionIndexToPrimaryIndex">regionIndexToPrimaryIndex</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>(package private) int[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#regionIndexToServerIndex">regionIndexToServerIndex</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>(package private) int[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#regionIndexToTableIndex">regionIndexToTableIndex</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>(package private) <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Deque.html?is-external=true" title="class or interface in java.util">Deque</a>&lt;<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BalancerRegionLoad.html" title="class in org.apache.hadoop.hbase.master.balancer">BalancerRegionLoad</a>&gt;[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#regionLoads">regionLoads</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>(package private) int[][]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#regionLocations">regionLocations</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>(package private) <a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#regions">regions</a></span></code>&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><code>(package private) int[][]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#regionsPerHost">regionsPerHost</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>(package private) int[][]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#regionsPerRack">regionsPerRack</a></span></code>&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><code>(package private) int[][]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#regionsPerServer">regionsPerServer</a></span></code>&nbsp;</td>
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<tr class="altColor">
<td class="colFirst"><code>(package 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;<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#regionsToIndex">regionsToIndex</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/BaseLoadBalancer.Cluster.html#regionsToMostLocalEntities">regionsToMostLocalEntities</a></span></code>&nbsp;</td>
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<tr class="altColor">
<td class="colFirst"><code>(package private) int[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#serverIndexToHostIndex">serverIndexToHostIndex</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>(package private) int[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#serverIndexToRackIndex">serverIndexToRackIndex</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>(package private) int[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#serverIndexToRegionsOffset">serverIndexToRegionsOffset</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>(package private) <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#serverIndicesSortedByLocality">serverIndicesSortedByLocality</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>(package private) <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#serverIndicesSortedByRegionCount">serverIndicesSortedByRegionCount</a></span></code>&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><code>(package private) <a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#servers">servers</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>(package private) int[][]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#serversPerHost">serversPerHost</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>(package private) int[][]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#serversPerRack">serversPerRack</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>(package 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;<a href="../../../../../../org/apache/hadoop/hbase/net/Address.html" title="class in org.apache.hadoop.hbase.net">Address</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#serversToIndex">serversToIndex</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>(package private) <a href="https://docs.oracle.com/javase/8/docs/api/java/util/ArrayList.html?is-external=true" title="class or interface in java.util">ArrayList</a>&lt;<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>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#tables">tables</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>(package 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;<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>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#tablesToIndex">tablesToIndex</a></span></code>&nbsp;</td>
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<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<h3>Constructor Summary</h3>
<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation">
<caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier</th>
<th class="colLast" scope="col">Constructor and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected </code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#Cluster-java.util.Collection-java.util.Map-java.util.Map-org.apache.hadoop.hbase.master.balancer.RegionHDFSBlockLocationFinder-org.apache.hadoop.hbase.master.RackManager-">Cluster</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>&gt;&nbsp;unassignedRegions,
<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;<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>,<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;<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>&gt;&gt;&nbsp;clusterState,
<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;<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>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Deque.html?is-external=true" title="class or interface in java.util">Deque</a>&lt;<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BalancerRegionLoad.html" title="class in org.apache.hadoop.hbase.master.balancer">BalancerRegionLoad</a>&gt;&gt;&nbsp;loads,
<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/RegionHDFSBlockLocationFinder.html" title="class in org.apache.hadoop.hbase.master.balancer">RegionHDFSBlockLocationFinder</a>&nbsp;regionFinder,
<a href="../../../../../../org/apache/hadoop/hbase/master/RackManager.html" title="class in org.apache.hadoop.hbase.master">RackManager</a>&nbsp;rackManager)</code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected </code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#Cluster-java.util.Map-java.util.Map-org.apache.hadoop.hbase.master.balancer.RegionHDFSBlockLocationFinder-org.apache.hadoop.hbase.master.RackManager-">Cluster</a></span>(<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;<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>,<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;<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>&gt;&gt;&nbsp;clusterState,
<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;<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>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Deque.html?is-external=true" title="class or interface in java.util">Deque</a>&lt;<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BalancerRegionLoad.html" title="class in org.apache.hadoop.hbase.master.balancer">BalancerRegionLoad</a>&gt;&gt;&nbsp;loads,
<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/RegionHDFSBlockLocationFinder.html" title="class in org.apache.hadoop.hbase.master.balancer">RegionHDFSBlockLocationFinder</a>&nbsp;regionFinder,
<a href="../../../../../../org/apache/hadoop/hbase/master/RackManager.html" title="class in org.apache.hadoop.hbase.master">RackManager</a>&nbsp;rackManager)</code>&nbsp;</td>
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<h3>Method Summary</h3>
<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
<caption><span id="t0" class="activeTableTab"><span>All Methods</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>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tr id="i0" class="altColor">
<td class="colFirst"><code>(package private) int[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#addRegion-int:A-int-">addRegion</a></span>(int[]&nbsp;regions,
int&nbsp;regionIndex)</code>&nbsp;</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>(package private) int[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#addRegionSorted-int:A-int-">addRegionSorted</a></span>(int[]&nbsp;regions,
int&nbsp;regionIndex)</code>&nbsp;</td>
</tr>
<tr id="i2" 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/BaseLoadBalancer.Cluster.html#computeCachedLocalities--">computeCachedLocalities</a></span>()</code>
<div class="block">Computes and caches the locality for each region/rack combinations,
as well as storing a mapping of region -> server and region -> rack such that server
and rack have the highest locality for region</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>(package private) boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#contains-int:A-int-">contains</a></span>(int[]&nbsp;arr,
int&nbsp;val)</code>&nbsp;</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#doAction-org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.Cluster.Action-">doAction</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.Action.html" title="class in org.apache.hadoop.hbase.master.balancer">BaseLoadBalancer.Cluster.Action</a>&nbsp;action)</code>&nbsp;</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>(package private) void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#doAssignRegion-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.ServerName-">doAssignRegion</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>&nbsp;regionInfo,
<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>&nbsp;serverName)</code>&nbsp;</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>(package private) float</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#getLocalityOfRegion-int-int-">getLocalityOfRegion</a></span>(int&nbsp;region,
int&nbsp;server)</code>&nbsp;</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>(package private) int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#getLowestLocalityRegionOnServer-int-">getLowestLocalityRegionOnServer</a></span>(int&nbsp;serverIndex)</code>&nbsp;</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>(package private) int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#getNumRegions-int-">getNumRegions</a></span>(int&nbsp;server)</code>&nbsp;</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>float</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#getOrComputeLocality-int-int-org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.Cluster.LocalityType-">getOrComputeLocality</a></span>(int&nbsp;region,
int&nbsp;entity,
<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.LocalityType.html" title="enum in org.apache.hadoop.hbase.master.balancer">BaseLoadBalancer.Cluster.LocalityType</a>&nbsp;type)</code>
<div class="block">Looks up locality from cache of localities.</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>float[][]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#getOrComputeRackLocalities--">getOrComputeRackLocalities</a></span>()</code>
<div class="block">Retrieves and lazily initializes a field storing the locality of
every region/server combination</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>int[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#getOrComputeRegionsToMostLocalEntities-org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.Cluster.LocalityType-">getOrComputeRegionsToMostLocalEntities</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.LocalityType.html" title="enum in org.apache.hadoop.hbase.master.balancer">BaseLoadBalancer.Cluster.LocalityType</a>&nbsp;type)</code>
<div class="block">Lazily initializes and retrieves a mapping of region -> server for which region has
the highest the locality</div>
</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>double</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#getOrComputeWeightedLocality-int-int-org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.Cluster.LocalityType-">getOrComputeWeightedLocality</a></span>(int&nbsp;region,
int&nbsp;server,
<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.LocalityType.html" title="enum in org.apache.hadoop.hbase.master.balancer">BaseLoadBalancer.Cluster.LocalityType</a>&nbsp;type)</code>
<div class="block">Returns locality weighted by region size in MB.</div>
</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#getRackForRegion-int-">getRackForRegion</a></span>(int&nbsp;region)</code>
<div class="block">Maps region index to rack index</div>
</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#getRegionSizeMB-int-">getRegionSizeMB</a></span>(int&nbsp;region)</code>
<div class="block">Returns the size in MB from the most recent RegionLoad for region</div>
</td>
</tr>
<tr id="i15" class="rowColor">
<td class="colFirst"><code>(package private) void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#regionMoved-int-int-int-">regionMoved</a></span>(int&nbsp;region,
int&nbsp;oldServer,
int&nbsp;newServer)</code>&nbsp;</td>
</tr>
<tr id="i16" 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/BaseLoadBalancer.Cluster.html#registerRegion-org.apache.hadoop.hbase.client.RegionInfo-int-int-java.util.Map-org.apache.hadoop.hbase.master.balancer.RegionHDFSBlockLocationFinder-">registerRegion</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>&nbsp;region,
int&nbsp;regionIndex,
int&nbsp;serverIndex,
<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;<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>,<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Deque.html?is-external=true" title="class or interface in java.util">Deque</a>&lt;<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BalancerRegionLoad.html" title="class in org.apache.hadoop.hbase.master.balancer">BalancerRegionLoad</a>&gt;&gt;&nbsp;loads,
<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/RegionHDFSBlockLocationFinder.html" title="class in org.apache.hadoop.hbase.master.balancer">RegionHDFSBlockLocationFinder</a>&nbsp;regionFinder)</code>
<div class="block">Helper for Cluster constructor to handle a region</div>
</td>
</tr>
<tr id="i17" class="rowColor">
<td class="colFirst"><code>(package private) int[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#removeRegion-int:A-int-">removeRegion</a></span>(int[]&nbsp;regions,
int&nbsp;regionIndex)</code>&nbsp;</td>
</tr>
<tr id="i18" class="altColor">
<td class="colFirst"><code>(package private) int[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#replaceRegion-int:A-int-int-">replaceRegion</a></span>(int[]&nbsp;regions,
int&nbsp;regionIndex,
int&nbsp;newRegionIndex)</code>&nbsp;</td>
</tr>
<tr id="i19" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#serverHasTooFewRegions-int-">serverHasTooFewRegions</a></span>(int&nbsp;server)</code>
<div class="block">Returns true iff a given server has less regions than the balanced amount</div>
</td>
</tr>
<tr id="i20" class="altColor">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#setNumMovedRegions-int-">setNumMovedRegions</a></span>(int&nbsp;numMovedRegions)</code>&nbsp;</td>
</tr>
<tr id="i21" 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/BaseLoadBalancer.Cluster.html#setNumRegions-int-">setNumRegions</a></span>(int&nbsp;numRegions)</code>&nbsp;</td>
</tr>
<tr id="i22" class="altColor">
<td class="colFirst"><code>(package private) void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#sortServersByRegionCount--">sortServersByRegionCount</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i23" class="rowColor">
<td class="colFirst"><code><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/BaseLoadBalancer.Cluster.html#toString--">toString</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i24" class="altColor">
<td class="colFirst"><code>(package private) boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#wouldLowerAvailability-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.ServerName-">wouldLowerAvailability</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>&nbsp;regionInfo,
<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>&nbsp;serverName)</code>
<div class="block">Return true if the placement of region on server would lower the availability
of the region in question</div>
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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#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>
<a name="servers">
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<a name="registerRegion-org.apache.hadoop.hbase.client.RegionInfo-int-int-java.util.Map-org.apache.hadoop.hbase.master.balancer.RegionHDFSBlockLocationFinder-">
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<h4>registerRegion</h4>
<pre>private&nbsp;void&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#line.477">registerRegion</a>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>&nbsp;region,
int&nbsp;regionIndex,
int&nbsp;serverIndex,
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<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/RegionHDFSBlockLocationFinder.html" title="class in org.apache.hadoop.hbase.master.balancer">RegionHDFSBlockLocationFinder</a>&nbsp;regionFinder)</pre>
<div class="block">Helper for Cluster constructor to handle a region</div>
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<h4>serverHasTooFewRegions</h4>
<pre>public&nbsp;boolean&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#line.519">serverHasTooFewRegions</a>(int&nbsp;server)</pre>
<div class="block">Returns true iff a given server has less regions than the balanced amount</div>
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<h4>getOrComputeRackLocalities</h4>
<pre>public&nbsp;float[][]&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#line.529">getOrComputeRackLocalities</a>()</pre>
<div class="block">Retrieves and lazily initializes a field storing the locality of
every region/server combination</div>
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<h4>getOrComputeRegionsToMostLocalEntities</h4>
<pre>public&nbsp;int[]&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#line.540">getOrComputeRegionsToMostLocalEntities</a>(<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.LocalityType.html" title="enum in org.apache.hadoop.hbase.master.balancer">BaseLoadBalancer.Cluster.LocalityType</a>&nbsp;type)</pre>
<div class="block">Lazily initializes and retrieves a mapping of region -> server for which region has
the highest the locality</div>
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<h4>getOrComputeLocality</h4>
<pre>public&nbsp;float&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#line.551">getOrComputeLocality</a>(int&nbsp;region,
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<div class="block">Looks up locality from cache of localities. Will create cache if it does
not already exist.</div>
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<h4>getOrComputeWeightedLocality</h4>
<pre>public&nbsp;double&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#line.566">getOrComputeWeightedLocality</a>(int&nbsp;region,
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<div class="block">Returns locality weighted by region size in MB. Will create locality cache
if it does not already exist.</div>
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<pre>public&nbsp;int&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#line.573">getRegionSizeMB</a>(int&nbsp;region)</pre>
<div class="block">Returns the size in MB from the most recent RegionLoad for region</div>
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<pre>private&nbsp;void&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#line.587">computeCachedLocalities</a>()</pre>
<div class="block">Computes and caches the locality for each region/rack combinations,
as well as storing a mapping of region -> server and region -> rack such that server
and rack have the highest locality for region</div>
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<pre>public&nbsp;int&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#line.627">getRackForRegion</a>(int&nbsp;region)</pre>
<div class="block">Maps region index to rack index</div>
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<pre>boolean&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#line.755">wouldLowerAvailability</a>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>&nbsp;regionInfo,
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<div class="block">Return true if the placement of region on server would lower the availability
of the region in question</div>
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<dt><span class="returnLabel">Returns:</span></dt>
<dd>true or false</dd>
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<pre>void&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#line.818">doAssignRegion</a>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>&nbsp;regionInfo,
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<pre>void&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#line.827">regionMoved</a>(int&nbsp;region,
int&nbsp;oldServer,
int&nbsp;newServer)</pre>
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<pre>int[]&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#line.894">removeRegion</a>(int[]&nbsp;regions,
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<pre>int[]&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#line.908">addRegion</a>(int[]&nbsp;regions,
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<pre>int[]&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#line.915">addRegionSorted</a>(int[]&nbsp;regions,
int&nbsp;regionIndex)</pre>
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<pre>int[]&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#line.930">replaceRegion</a>(int[]&nbsp;regions,
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int&nbsp;newRegionIndex)</pre>
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<pre>void&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#line.941">sortServersByRegionCount</a>()</pre>
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<pre>int&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#line.945">getNumRegions</a>(int&nbsp;server)</pre>
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<pre>boolean&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#line.949">contains</a>(int[]&nbsp;arr,
int&nbsp;val)</pre>
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<pre>int&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#line.955">getLowestLocalityRegionOnServer</a>(int&nbsp;serverIndex)</pre>
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<pre>float&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#line.993">getLocalityOfRegion</a>(int&nbsp;region,
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<pre>protected&nbsp;void&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#line.1002">setNumRegions</a>(int&nbsp;numRegions)</pre>
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<pre>protected&nbsp;void&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#line.1006">setNumMovedRegions</a>(int&nbsp;numMovedRegions)</pre>
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<pre>public&nbsp;<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;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.Cluster.html#line.1013">toString</a>()</pre>
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