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| <h1 title="Uses of Package org.apache.hadoop.hbase.master.balancer" class="title">Uses of Package<br>org.apache.hadoop.hbase.master.balancer</h1> |
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| <table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing packages, and an explanation"> |
| <caption><span>Packages that use <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/package-summary.html">org.apache.hadoop.hbase.master.balancer</a></span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Package</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tbody> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="#org.apache.hadoop.hbase.favored">org.apache.hadoop.hbase.favored</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="#org.apache.hadoop.hbase.master">org.apache.hadoop.hbase.master</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="#org.apache.hadoop.hbase.master.balancer">org.apache.hadoop.hbase.master.balancer</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="#org.apache.hadoop.hbase.rsgroup">org.apache.hadoop.hbase.rsgroup</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| </tbody> |
| </table> |
| </li> |
| <li class="blockList"><a name="org.apache.hadoop.hbase.favored"> |
| <!-- --> |
| </a> |
| <table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing classes, and an explanation"> |
| <caption><span>Classes in <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/package-summary.html">org.apache.hadoop.hbase.master.balancer</a> used by <a href="../../../../../../org/apache/hadoop/hbase/favored/package-summary.html">org.apache.hadoop.hbase.favored</a></span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colOne" scope="col">Class and Description</th> |
| </tr> |
| <tbody> |
| <tr class="altColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/BaseLoadBalancer.html#org.apache.hadoop.hbase.favored">BaseLoadBalancer</a> |
| <div class="block">The base class for load balancers.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/ClusterInfoProvider.html#org.apache.hadoop.hbase.favored">ClusterInfoProvider</a> |
| <div class="block">This is the cluster we want to balance.</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </li> |
| <li class="blockList"><a name="org.apache.hadoop.hbase.master"> |
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| <caption><span>Classes in <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/package-summary.html">org.apache.hadoop.hbase.master.balancer</a> used by <a href="../../../../../../org/apache/hadoop/hbase/master/package-summary.html">org.apache.hadoop.hbase.master</a></span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colOne" scope="col">Class and Description</th> |
| </tr> |
| <tbody> |
| <tr class="altColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/BalancerChore.html#org.apache.hadoop.hbase.master">BalancerChore</a> |
| <div class="block">Chore that will call HMaster.balance<a href="../../../../../../org/apache/hadoop/hbase/master/HMaster.html#balance--"><code>HMaster.balance()</code></a> when |
| needed.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/ClusterInfoProvider.html#org.apache.hadoop.hbase.master">ClusterInfoProvider</a> |
| <div class="block">This is the cluster we want to balance.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/ClusterStatusChore.html#org.apache.hadoop.hbase.master">ClusterStatusChore</a> |
| <div class="block">Chore that will feed the balancer the cluster status.</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </li> |
| <li class="blockList"><a name="org.apache.hadoop.hbase.master.balancer"> |
| <!-- --> |
| </a> |
| <table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing classes, and an explanation"> |
| <caption><span>Classes in <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/package-summary.html">org.apache.hadoop.hbase.master.balancer</a> used by <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/package-summary.html">org.apache.hadoop.hbase.master.balancer</a></span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colOne" scope="col">Class and Description</th> |
| </tr> |
| <tbody> |
| <tr class="altColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/BalanceAction.html#org.apache.hadoop.hbase.master.balancer">BalanceAction</a> |
| <div class="block">An action to move or swap a region</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/BalanceAction.Type.html#org.apache.hadoop.hbase.master.balancer">BalanceAction.Type</a> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/BalancerClusterState.html#org.apache.hadoop.hbase.master.balancer">BalancerClusterState</a> |
| <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.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/BalancerClusterState.LocalityType.html#org.apache.hadoop.hbase.master.balancer">BalancerClusterState.LocalityType</a> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/BalancerRegionLoad.html#org.apache.hadoop.hbase.master.balancer">BalancerRegionLoad</a> |
| <div class="block">Wrapper class for the few fields required by the <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html" title="class in org.apache.hadoop.hbase.master.balancer"><code>StochasticLoadBalancer</code></a> |
| from the full <a href="../../../../../../org/apache/hadoop/hbase/RegionMetrics.html" title="interface in org.apache.hadoop.hbase"><code>RegionMetrics</code></a>.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/BaseLoadBalancer.html#org.apache.hadoop.hbase.master.balancer">BaseLoadBalancer</a> |
| <div class="block">The base class for load balancers.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/CandidateGenerator.html#org.apache.hadoop.hbase.master.balancer">CandidateGenerator</a> |
| <div class="block">Generates a candidate action to be applied to the cluster for cost function search</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/ClusterInfoProvider.html#org.apache.hadoop.hbase.master.balancer">ClusterInfoProvider</a> |
| <div class="block">This is the cluster we want to balance.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/CostFromRegionLoadAsRateFunction.html#org.apache.hadoop.hbase.master.balancer">CostFromRegionLoadAsRateFunction</a> |
| <div class="block">Class to be used for the subset of RegionLoad costs that should be treated as rates.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/CostFromRegionLoadFunction.html#org.apache.hadoop.hbase.master.balancer">CostFromRegionLoadFunction</a> |
| <div class="block">Base class the allows writing costs functions from rolling average of some number from |
| RegionLoad.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/CostFunction.html#org.apache.hadoop.hbase.master.balancer">CostFunction</a> |
| <div class="block">Base class of StochasticLoadBalancer's Cost Functions.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/DoubleArrayCost.html#org.apache.hadoop.hbase.master.balancer">DoubleArrayCost</a> |
| <div class="block">A helper class to compute a scaled cost using |
| <code>org.apache.commons.math3.stat.descriptive.DescriptiveStatistics#DescriptiveStatistics()</code>.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/LocalityBasedCandidateGenerator.html#org.apache.hadoop.hbase.master.balancer">LocalityBasedCandidateGenerator</a> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/LocalityBasedCostFunction.html#org.apache.hadoop.hbase.master.balancer">LocalityBasedCostFunction</a> |
| <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> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/MetricsBalancer.html#org.apache.hadoop.hbase.master.balancer">MetricsBalancer</a> |
| <div class="block">Faced for exposing metrics about the balancer.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/MetricsBalancerSource.html#org.apache.hadoop.hbase.master.balancer">MetricsBalancerSource</a> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/MetricsBalancerSourceImpl.html#org.apache.hadoop.hbase.master.balancer">MetricsBalancerSourceImpl</a> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/MetricsStochasticBalancerSource.html#org.apache.hadoop.hbase.master.balancer">MetricsStochasticBalancerSource</a> |
| <div class="block">This interface extends the basic metrics balancer source to add a function |
| to report metrics that related to stochastic load balancer.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/RackLocalityCostFunction.html#org.apache.hadoop.hbase.master.balancer">RackLocalityCostFunction</a> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/RandomCandidateGenerator.html#org.apache.hadoop.hbase.master.balancer">RandomCandidateGenerator</a> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/RegionHDFSBlockLocationFinder.html#org.apache.hadoop.hbase.master.balancer">RegionHDFSBlockLocationFinder</a> |
| <div class="block">This will find where data for a region is located in HDFS.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/RegionInfoComparator.html#org.apache.hadoop.hbase.master.balancer">RegionInfoComparator</a> |
| <div class="block">The following comparator assumes that RegionId from HRegionInfo can represent |
| the age of the region - larger RegionId means the region is younger.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/RegionReplicaCandidateGenerator.html#org.apache.hadoop.hbase.master.balancer">RegionReplicaCandidateGenerator</a> |
| <div class="block">Generates candidates which moves the replicas out of the region server for co-hosted region |
| replicas</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/RegionReplicaGroupingCostFunction.html#org.apache.hadoop.hbase.master.balancer">RegionReplicaGroupingCostFunction</a> |
| <div class="block">A cost function for region replicas.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/RegionReplicaHostCostFunction.html#org.apache.hadoop.hbase.master.balancer">RegionReplicaHostCostFunction</a> |
| <div class="block">A cost function for region replicas.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/RegionReplicaRackCostFunction.html#org.apache.hadoop.hbase.master.balancer">RegionReplicaRackCostFunction</a> |
| <div class="block">A cost function for region replicas for the rack distribution.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/ServerAndLoad.html#org.apache.hadoop.hbase.master.balancer">ServerAndLoad</a> |
| <div class="block">Data structure that holds servername and 'load'.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/ServerLocalityCostFunction.html#org.apache.hadoop.hbase.master.balancer">ServerLocalityCostFunction</a> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/SimpleLoadBalancer.BalanceInfo.html#org.apache.hadoop.hbase.master.balancer">SimpleLoadBalancer.BalanceInfo</a> |
| <div class="block">Stores additional per-server information about the regions added/removed |
| during the run of the balancing algorithm.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/StochasticLoadBalancer.html#org.apache.hadoop.hbase.master.balancer">StochasticLoadBalancer</a> |
| <div class="block">This is a best effort load balancer.</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </li> |
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| <caption><span>Classes in <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/package-summary.html">org.apache.hadoop.hbase.master.balancer</a> used by <a href="../../../../../../org/apache/hadoop/hbase/rsgroup/package-summary.html">org.apache.hadoop.hbase.rsgroup</a></span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colOne" scope="col">Class and Description</th> |
| </tr> |
| <tbody> |
| <tr class="altColor"> |
| <td class="colOne"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/class-use/ClusterInfoProvider.html#org.apache.hadoop.hbase.rsgroup">ClusterInfoProvider</a> |
| <div class="block">This is the cluster we want to balance.</div> |
| </td> |
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