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| <div class="subTitle">org.apache.hadoop.hbase.master.balancer</div> |
| <h2 title="Class LocalityBasedCostFunction" class="title">Class LocalityBasedCostFunction</h2> |
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| <li><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/CostFunction.html" title="class in org.apache.hadoop.hbase.master.balancer">org.apache.hadoop.hbase.master.balancer.CostFunction</a></li> |
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| <li>org.apache.hadoop.hbase.master.balancer.LocalityBasedCostFunction</li> |
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| <dt>Direct Known Subclasses:</dt> |
| <dd><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/RackLocalityCostFunction.html" title="class in org.apache.hadoop.hbase.master.balancer">RackLocalityCostFunction</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/ServerLocalityCostFunction.html" title="class in org.apache.hadoop.hbase.master.balancer">ServerLocalityCostFunction</a></dd> |
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| <pre>@InterfaceAudience.Private |
| abstract class <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/LocalityBasedCostFunction.html#line.29">LocalityBasedCostFunction</a> |
| extends <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/CostFunction.html" title="class in org.apache.hadoop.hbase.master.balancer">CostFunction</a></pre> |
| <div class="block">Compute a cost of a potential cluster configuration based upon where |
| <a href="../../../../../../org/apache/hadoop/hbase/regionserver/HStoreFile.html" title="class in org.apache.hadoop.hbase.regionserver"><code>HStoreFile</code></a>s are located.</div> |
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| <tr class="altColor"> |
| <td class="colFirst"><code>private double</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LocalityBasedCostFunction.html#bestLocality">bestLocality</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private double</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LocalityBasedCostFunction.html#locality">locality</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BalancerClusterState.LocalityType.html" title="enum in org.apache.hadoop.hbase.master.balancer">BalancerClusterState.LocalityType</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LocalityBasedCostFunction.html#type">type</a></span></code> </td> |
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| <code><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/CostFunction.html#cluster">cluster</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/CostFunction.html#COST_EPSILON">COST_EPSILON</a></code></li> |
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| <th class="colOne" scope="col">Constructor and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LocalityBasedCostFunction.html#LocalityBasedCostFunction-org.apache.hadoop.conf.Configuration-org.apache.hadoop.hbase.master.balancer.BalancerClusterState.LocalityType-java.lang.String-float-">LocalityBasedCostFunction</a></span>(org.apache.hadoop.conf.Configuration conf, |
| <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BalancerClusterState.LocalityType.html" title="enum in org.apache.hadoop.hbase.master.balancer">BalancerClusterState.LocalityType</a> type, |
| <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> localityCostKey, |
| float defaultLocalityCost)</code> </td> |
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| <td class="colFirst"><code>protected double</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LocalityBasedCostFunction.html#cost--">cost</a></span>()</code> </td> |
| </tr> |
| <tr id="i1" 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/LocalityBasedCostFunction.html#getMostLocalEntityForRegion-int-">getMostLocalEntityForRegion</a></span>(int region)</code> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>private double</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LocalityBasedCostFunction.html#getWeightedLocality-int-int-">getWeightedLocality</a></span>(int region, |
| int entity)</code> </td> |
| </tr> |
| <tr id="i3" 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/LocalityBasedCostFunction.html#prepare-org.apache.hadoop.hbase.master.balancer.BalancerClusterState-">prepare</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BalancerClusterState.html" title="class in org.apache.hadoop.hbase.master.balancer">BalancerClusterState</a> cluster)</code> |
| <div class="block">Called once per LB invocation to give the cost function to initialize it's state, and perform |
| any costly calculation.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>(package private) abstract int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/LocalityBasedCostFunction.html#regionIndexToEntityIndex-int-">regionIndexToEntityIndex</a></span>(int region)</code> |
| <div class="block">Maps region to the current entity (server or rack) on which it is stored</div> |
| </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/LocalityBasedCostFunction.html#regionMoved-int-int-int-">regionMoved</a></span>(int region, |
| int oldServer, |
| int newServer)</code> </td> |
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| <h3>Methods inherited from class org.apache.hadoop.hbase.master.balancer.<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/CostFunction.html" title="class in org.apache.hadoop.hbase.master.balancer">CostFunction</a></h3> |
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| <h4>type</h4> |
| <pre>private final <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BalancerClusterState.LocalityType.html" title="enum in org.apache.hadoop.hbase.master.balancer">BalancerClusterState.LocalityType</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/LocalityBasedCostFunction.html#line.31">type</a></pre> |
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| <h4>bestLocality</h4> |
| <pre>private double <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/LocalityBasedCostFunction.html#line.33">bestLocality</a></pre> |
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| <a name="locality"> |
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| <h4>locality</h4> |
| <pre>private double <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/LocalityBasedCostFunction.html#line.34">locality</a></pre> |
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| <h3>Constructor Detail</h3> |
| <a name="LocalityBasedCostFunction-org.apache.hadoop.conf.Configuration-org.apache.hadoop.hbase.master.balancer.BalancerClusterState.LocalityType-java.lang.String-float-"> |
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| <h4>LocalityBasedCostFunction</h4> |
| <pre><a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/LocalityBasedCostFunction.html#line.36">LocalityBasedCostFunction</a>(org.apache.hadoop.conf.Configuration conf, |
| <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BalancerClusterState.LocalityType.html" title="enum in org.apache.hadoop.hbase.master.balancer">BalancerClusterState.LocalityType</a> type, |
| <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> localityCostKey, |
| float defaultLocalityCost)</pre> |
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| <h4>regionIndexToEntityIndex</h4> |
| <pre>abstract int <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/LocalityBasedCostFunction.html#line.47">regionIndexToEntityIndex</a>(int region)</pre> |
| <div class="block">Maps region to the current entity (server or rack) on which it is stored</div> |
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| <h4>prepare</h4> |
| <pre>void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/LocalityBasedCostFunction.html#line.50">prepare</a>(<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BalancerClusterState.html" title="class in org.apache.hadoop.hbase.master.balancer">BalancerClusterState</a> cluster)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/CostFunction.html#prepare-org.apache.hadoop.hbase.master.balancer.BalancerClusterState-">CostFunction</a></code></span></div> |
| <div class="block">Called once per LB invocation to give the cost function to initialize it's state, and perform |
| any costly calculation.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/CostFunction.html#prepare-org.apache.hadoop.hbase.master.balancer.BalancerClusterState-">prepare</a></code> in class <code><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/CostFunction.html" title="class in org.apache.hadoop.hbase.master.balancer">CostFunction</a></code></dd> |
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| <pre>protected void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/LocalityBasedCostFunction.html#line.67">regionMoved</a>(int region, |
| int oldServer, |
| int newServer)</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/CostFunction.html#regionMoved-int-int-int-">regionMoved</a></code> in class <code><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/CostFunction.html" title="class in org.apache.hadoop.hbase.master.balancer">CostFunction</a></code></dd> |
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| <h4>cost</h4> |
| <pre>protected final double <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/LocalityBasedCostFunction.html#line.79">cost</a>()</pre> |
| <dl> |
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| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/CostFunction.html#cost--">cost</a></code> in class <code><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/CostFunction.html" title="class in org.apache.hadoop.hbase.master.balancer">CostFunction</a></code></dd> |
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| <pre>private int <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/LocalityBasedCostFunction.html#line.83">getMostLocalEntityForRegion</a>(int region)</pre> |
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| <h4>getWeightedLocality</h4> |
| <pre>private double <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/LocalityBasedCostFunction.html#line.87">getWeightedLocality</a>(int region, |
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