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| <div class="subTitle">org.apache.hadoop.hbase.master.balancer</div> |
| <h2 title="Class FavoredStochasticBalancer" class="title">Class FavoredStochasticBalancer</h2> |
| </div> |
| <div class="contentContainer"> |
| <ul class="inheritance"> |
| <li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li> |
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| <li><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html" title="class in org.apache.hadoop.hbase.master.balancer">org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html" title="class in org.apache.hadoop.hbase.master.balancer">org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.hadoop.hbase.master.balancer.FavoredStochasticBalancer</li> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd><a href="../../../../../../org/apache/hadoop/hbase/conf/ConfigurationObserver.html" title="interface in org.apache.hadoop.hbase.conf">ConfigurationObserver</a>, <a href="../../../../../../org/apache/hadoop/hbase/favored/FavoredNodesPromoter.html" title="interface in org.apache.hadoop.hbase.favored">FavoredNodesPromoter</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html" title="interface in org.apache.hadoop.hbase.master">LoadBalancer</a>, <a href="../../../../../../org/apache/hadoop/hbase/Stoppable.html" title="interface in org.apache.hadoop.hbase">Stoppable</a></dd> |
| </dl> |
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| <br> |
| <pre>@InterfaceAudience.Private |
| public class <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.html#line.73">FavoredStochasticBalancer</a> |
| extends <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html" title="class in org.apache.hadoop.hbase.master.balancer">StochasticLoadBalancer</a> |
| implements <a href="../../../../../../org/apache/hadoop/hbase/favored/FavoredNodesPromoter.html" title="interface in org.apache.hadoop.hbase.favored">FavoredNodesPromoter</a></pre> |
| <div class="block">An implementation of the <a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html" title="interface in org.apache.hadoop.hbase.master"><code>LoadBalancer</code></a> that |
| assigns favored nodes for each region. There is a Primary RegionServer that hosts |
| the region, and then there is Secondary and Tertiary RegionServers. Currently, the |
| favored nodes information is used in creating HDFS files - the Primary RegionServer |
| passes the primary, secondary, tertiary node addresses as hints to the |
| DistributedFileSystem API for creating files on the filesystem. These nodes are |
| treated as hints by the HDFS to place the blocks of the file. This alleviates the |
| problem to do with reading from remote nodes (since we can make the Secondary |
| RegionServer as the new Primary RegionServer) after a region is recovered. This |
| should help provide consistent read latencies for the regions even when their |
| primary region servers die. This provides two |
| <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/CandidateGenerator.html" title="class in org.apache.hadoop.hbase.master.balancer"><code>CandidateGenerator</code></a></div> |
| </li> |
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| <caption><span>Nested Classes</span><span class="tabEnd"> </span></caption> |
| <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>(package private) class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.FavoredNodeLoadPicker.html" title="class in org.apache.hadoop.hbase.master.balancer">FavoredStochasticBalancer.FavoredNodeLoadPicker</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.FavoredNodeLocalityPicker.html" title="class in org.apache.hadoop.hbase.master.balancer">FavoredStochasticBalancer.FavoredNodeLocalityPicker</a></span></code> |
| <div class="block">Pick favored nodes with the highest locality for a region with lowest locality.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
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| <h3>Field Summary</h3> |
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| <caption><span>Fields</span><span class="tabEnd"> </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 <a href="../../../../../../org/apache/hadoop/hbase/favored/FavoredNodesManager.html" title="class in org.apache.hadoop.hbase.favored">FavoredNodesManager</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.html#fnm">fnm</a></span></code> </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/FavoredStochasticBalancer.html#LOG">LOG</a></span></code> </td> |
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| <!-- --> |
| </a> |
| <h3>Fields inherited from class org.apache.hadoop.hbase.master.balancer.<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html" title="class in org.apache.hadoop.hbase.master.balancer">StochasticLoadBalancer</a></h3> |
| <code><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html#COST_FUNCTIONS_COST_FUNCTIONS_KEY">COST_FUNCTIONS_COST_FUNCTIONS_KEY</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html#KEEP_REGION_LOADS">KEEP_REGION_LOADS</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html#loads">loads</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html#MAX_RUNNING_TIME_KEY">MAX_RUNNING_TIME_KEY</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html#MAX_STEPS_KEY">MAX_STEPS_KEY</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html#MIN_COST_NEED_BALANCE_KEY">MIN_COST_NEED_BALANCE_KEY</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html#RUN_MAX_STEPS_KEY">RUN_MAX_STEPS_KEY</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html#STEPS_PER_REGION_KEY">STEPS_PER_REGION_KEY</a></code></li> |
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| <li class="blockList"><a name="fields.inherited.from.class.org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer"> |
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| </a> |
| <h3>Fields inherited from class org.apache.hadoop.hbase.master.balancer.<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html" title="class in org.apache.hadoop.hbase.master.balancer">BaseLoadBalancer</a></h3> |
| <code><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#BALANCER_DECISION_BUFFER_ENABLED">BALANCER_DECISION_BUFFER_ENABLED</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#BALANCER_REJECTION_BUFFER_ENABLED">BALANCER_REJECTION_BUFFER_ENABLED</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#clusterStatus">clusterStatus</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#DEFAULT_BALANCER_DECISION_BUFFER_ENABLED">DEFAULT_BALANCER_DECISION_BUFFER_ENABLED</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#DEFAULT_BALANCER_REJECTION_BUFFER_ENABLED">DEFAULT_BALANCER_REJECTION_BUFFER_ENABLED</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#isByTable">isByTable</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#masterServerName">masterServerName</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#metricsBalancer">metricsBalancer</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#MIN_SERVER_BALANCE">MIN_SERVER_BALANCE</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#provider">provider</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#rackManager">rackManager</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#regionFinder">regionFinder</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#slop">slop</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#useRegionFinder">useRegionFinder</a></code></li> |
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| <li class="blockList"><a name="fields.inherited.from.class.org.apache.hadoop.hbase.favored.FavoredNodesPromoter"> |
| <!-- --> |
| </a> |
| <h3>Fields inherited from interface org.apache.hadoop.hbase.favored.<a href="../../../../../../org/apache/hadoop/hbase/favored/FavoredNodesPromoter.html" title="interface in org.apache.hadoop.hbase.favored">FavoredNodesPromoter</a></h3> |
| <code><a href="../../../../../../org/apache/hadoop/hbase/favored/FavoredNodesPromoter.html#FAVORED_ALWAYS_ASSIGN_REGIONS">FAVORED_ALWAYS_ASSIGN_REGIONS</a></code></li> |
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| <li class="blockList"><a name="fields.inherited.from.class.org.apache.hadoop.hbase.master.LoadBalancer"> |
| <!-- --> |
| </a> |
| <h3>Fields inherited from interface org.apache.hadoop.hbase.master.<a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html" title="interface in org.apache.hadoop.hbase.master">LoadBalancer</a></h3> |
| <code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html#BOGUS_SERVER_NAME">BOGUS_SERVER_NAME</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html#HBASE_RSGROUP_LOADBALANCER_CLASS">HBASE_RSGROUP_LOADBALANCER_CLASS</a></code></li> |
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| <th class="colOne" scope="col">Constructor and Description</th> |
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| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.html#FavoredStochasticBalancer--">FavoredStochasticBalancer</a></span>()</code> </td> |
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| <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>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.html#addRegionToMap-java.util.Map-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.ServerName-">addRegionToMap</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><<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><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>> assignmentMapForFavoredNodes, |
| <a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> region, |
| <a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a> host)</code> </td> |
| </tr> |
| <tr id="i1" 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/FavoredStochasticBalancer.html#assignRegionToAvailableFavoredNode-java.util.Map-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.ServerName-org.apache.hadoop.hbase.ServerName-org.apache.hadoop.hbase.ServerName-">assignRegionToAvailableFavoredNode</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><<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><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>> assignmentMapForFavoredNodes, |
| <a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> region, |
| <a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a> primaryHost, |
| <a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a> secondaryHost, |
| <a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a> tertiaryHost)</code> |
| <div class="block">Assign the region to primary if its available.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>protected <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><<a href="../../../../../../org/apache/hadoop/hbase/master/RegionPlan.html" title="class in org.apache.hadoop.hbase.master">RegionPlan</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.html#balanceTable-org.apache.hadoop.hbase.TableName-java.util.Map-">balanceTable</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/TableName.html" title="class in org.apache.hadoop.hbase">TableName</a> tableName, |
| <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><<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><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>> loadOfOneTable)</code> |
| <div class="block">For all regions correctly assigned to favored nodes, we just use the stochastic balancer |
| implementation.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>protected <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><<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/CandidateGenerator.html" title="class in org.apache.hadoop.hbase.master.balancer">CandidateGenerator</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.html#createCandidateGenerators--">createCandidateGenerators</a></span>()</code> </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/FavoredStochasticBalancer.html#generateFavoredNodesForDaughter-java.util.List-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.client.RegionInfo-">generateFavoredNodesForDaughter</a></span>(<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><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> servers, |
| <a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> parent, |
| <a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionA, |
| <a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionB)</code> |
| <div class="block">Generate Favored Nodes for daughters during region split.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.html#generateFavoredNodesForMergedRegion-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.client.RegionInfo:A-">generateFavoredNodesForMergedRegion</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> merged, |
| <a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>[] mergeParents)</code> |
| <div class="block">Generate favored nodes for a region during merge.</div> |
| </td> |
| </tr> |
| <tr id="i6" 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><<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><<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/FavoredStochasticBalancer.html#generateFNForRegionsWithoutFN-org.apache.hadoop.hbase.favored.FavoredNodeAssignmentHelper-java.util.List-">generateFNForRegionsWithoutFN</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/favored/FavoredNodeAssignmentHelper.html" title="class in org.apache.hadoop.hbase.favored">FavoredNodeAssignmentHelper</a> helper, |
| <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><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>> regions)</code> </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code><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><<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/FavoredStochasticBalancer.html#getFavoredNodes-org.apache.hadoop.hbase.client.RegionInfo-">getFavoredNodes</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfo)</code> </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util">Set</a><<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/FavoredStochasticBalancer.html#getInheritedFNForDaughter-org.apache.hadoop.hbase.favored.FavoredNodeAssignmentHelper-java.util.List-org.apache.hadoop.hbase.favored.FavoredNodesPlan.Position-org.apache.hadoop.hbase.favored.FavoredNodesPlan.Position-">getInheritedFNForDaughter</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/favored/FavoredNodeAssignmentHelper.html" title="class in org.apache.hadoop.hbase.favored">FavoredNodeAssignmentHelper</a> helper, |
| <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><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> parentFavoredNodes, |
| <a href="../../../../../../org/apache/hadoop/hbase/favored/FavoredNodesPlan.Position.html" title="enum in org.apache.hadoop.hbase.favored">FavoredNodesPlan.Position</a> primary, |
| <a href="../../../../../../org/apache/hadoop/hbase/favored/FavoredNodesPlan.Position.html" title="enum in org.apache.hadoop.hbase.favored">FavoredNodesPlan.Position</a> secondary)</code> </td> |
| </tr> |
| <tr id="i9" 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><<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/FavoredStochasticBalancer.html#getOnlineFavoredNodes-java.util.List-java.util.List-">getOnlineFavoredNodes</a></span>(<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><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> onlineServers, |
| <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><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> serversWithoutStartCodes)</code> |
| <div class="block">Return list of favored nodes that are online.</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>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/FavoredStochasticBalancer.html#getServerFromFavoredNode-java.util.List-org.apache.hadoop.hbase.ServerName-">getServerFromFavoredNode</a></span>(<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><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> servers, |
| <a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a> fn)</code> |
| <div class="block">Get the ServerName for the FavoredNode.</div> |
| </td> |
| </tr> |
| <tr id="i11" 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/FavoredStochasticBalancer.html#mergeAssignmentMaps-java.util.Map-java.util.Map-">mergeAssignmentMaps</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><<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><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>> assignmentMap, |
| <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><<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><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>> otherAssignments)</code> </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code><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/FavoredStochasticBalancer.html#randomAssignment-org.apache.hadoop.hbase.client.RegionInfo-java.util.List-">randomAssignment</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfo, |
| <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><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> servers)</code> |
| <div class="block">If we have favored nodes for a region, we will return one of the FN as destination.</div> |
| </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
| <td class="colFirst"><code><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><<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><<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/FavoredStochasticBalancer.html#retainAssignment-java.util.Map-java.util.List-">retainAssignment</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><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>,<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> regions, |
| <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><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> servers)</code> |
| <div class="block">Reuse BaseLoadBalancer's retainAssignment, but generate favored nodes when its missing.</div> |
| </td> |
| </tr> |
| <tr id="i14" class="altColor"> |
| <td class="colFirst"><code><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><<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><<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/FavoredStochasticBalancer.html#roundRobinAssignment-java.util.List-java.util.List-">roundRobinAssignment</a></span>(<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><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>> regions, |
| <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><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> servers)</code> |
| <div class="block">Round robin assignment: Segregate the regions into two types: |
| |
| 1.</div> |
| </td> |
| </tr> |
| <tr id="i15" class="rowColor"> |
| <td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/util/Pair.html" title="class in org.apache.hadoop.hbase.util">Pair</a><<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><<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><<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/util/List.html?is-external=true" title="class or interface in java.util">List</a><<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/FavoredStochasticBalancer.html#segregateRegionsAndAssignRegionsWithFavoredNodes-java.util.Collection-java.util.List-">segregateRegionsAndAssignRegionsWithFavoredNodes</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><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>> regions, |
| <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><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> onlineServers)</code> |
| <div class="block">Return a pair - one with assignments when favored nodes are present and another with regions |
| without favored nodes.</div> |
| </td> |
| </tr> |
| <tr id="i16" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.html#setFavoredNodesManager-org.apache.hadoop.hbase.favored.FavoredNodesManager-">setFavoredNodesManager</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/favored/FavoredNodesManager.html" title="class in org.apache.hadoop.hbase.favored">FavoredNodesManager</a> fnm)</code> </td> |
| </tr> |
| <tr id="i17" 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/FavoredStochasticBalancer.html#updateFavoredNodesForRegion-org.apache.hadoop.hbase.client.RegionInfo-java.util.List-">updateFavoredNodesForRegion</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfo, |
| <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><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> newFavoredNodes)</code> </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a name="methods.inherited.from.class.org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from class org.apache.hadoop.hbase.master.balancer.<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html" title="class in org.apache.hadoop.hbase.master.balancer">StochasticLoadBalancer</a></h3> |
| <code><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html#composeAttributeName-java.lang.String-java.lang.String-">composeAttributeName</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html#computeCost-org.apache.hadoop.hbase.master.balancer.BalancerClusterState-double-">computeCost</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html#getCandidateGenerators--">getCandidateGenerators</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html#getCostFunctionNames--">getCostFunctionNames</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html#getDefaultSlop--">getDefaultSlop</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html#initCosts-org.apache.hadoop.hbase.master.balancer.BalancerClusterState-">initCosts</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html#loadConf-org.apache.hadoop.conf.Configuration-">loadConf</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html#needsBalance-org.apache.hadoop.hbase.TableName-org.apache.hadoop.hbase.master.balancer.BalancerClusterState-">needsBalance</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html#nextAction-org.apache.hadoop.hbase.master.balancer.BalancerClusterState-">nextAction</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html#setRackManager-org.apache.hadoop.hbase.master.RackManager-">setRackManager</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html#updateClusterMetrics-org.apache.hadoop.hbase.ClusterMetrics-">updateClusterMetrics</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html#updateCostsWithAction-org.apache.hadoop.hbase.master.balancer.BalancerClusterState-org.apache.hadoop.hbase.master.balancer.BalanceAction-">updateCostsWithAction</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html#updateMetricsSize-int-">updateMetricsSize</a></code></li> |
| </ul> |
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| <li class="blockList"><a name="methods.inherited.from.class.org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer"> |
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| <h3>Methods inherited from class org.apache.hadoop.hbase.master.balancer.<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html" title="class in org.apache.hadoop.hbase.master.balancer">BaseLoadBalancer</a></h3> |
| <code><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#balanceCluster-java.util.Map-">balanceCluster</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#getConf--">getConf</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#idleRegionServerExist-org.apache.hadoop.hbase.master.balancer.BalancerClusterState-">idleRegionServerExist</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#initialize--">initialize</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#isStopped--">isStopped</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#normalizeSlop-float-">normalizeSlop</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#onConfigurationChange-org.apache.hadoop.conf.Configuration-">onConfigurationChange</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#postMasterStartupInitialize--">postMasterStartupInitialize</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#preBalanceCluster-java.util.Map-">preBalanceCluster</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#regionOffline-org.apache.hadoop.hbase.client.RegionInfo-">regionOffline</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#regionOnline-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.ServerName-">regionOnline</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#setClusterInfoProvider-org.apache.hadoop.hbase.master.balancer.ClusterInfoProvider-">setClusterInfoProvider</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#stop-java.lang.String-">stop</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#updateBalancerStatus-boolean-">updateBalancerStatus</a></code></li> |
| </ul> |
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| <li class="blockList"><a name="methods.inherited.from.class.java.lang.Object"> |
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| <h3>Methods inherited from class 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> |
| </ul> |
| </li> |
| </ul> |
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| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ============ FIELD DETAIL =========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="field.detail"> |
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| <h3>Field Detail</h3> |
| <a name="LOG"> |
| <!-- --> |
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| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>LOG</h4> |
| <pre>private static final org.slf4j.Logger <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.html#line.76">LOG</a></pre> |
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| </ul> |
| <a name="fnm"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>fnm</h4> |
| <pre>private <a href="../../../../../../org/apache/hadoop/hbase/favored/FavoredNodesManager.html" title="class in org.apache.hadoop.hbase.favored">FavoredNodesManager</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.html#line.78">fnm</a></pre> |
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| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
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| <h3>Constructor Detail</h3> |
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| <li class="blockList"> |
| <h4>FavoredStochasticBalancer</h4> |
| <pre>public <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.html#line.73">FavoredStochasticBalancer</a>()</pre> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ============ METHOD DETAIL ========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.detail"> |
| <!-- --> |
| </a> |
| <h3>Method Detail</h3> |
| <a name="setFavoredNodesManager-org.apache.hadoop.hbase.favored.FavoredNodesManager-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setFavoredNodesManager</h4> |
| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.html#line.81">setFavoredNodesManager</a>(<a href="../../../../../../org/apache/hadoop/hbase/favored/FavoredNodesManager.html" title="class in org.apache.hadoop.hbase.favored">FavoredNodesManager</a> fnm)</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/favored/FavoredNodesPromoter.html#setFavoredNodesManager-org.apache.hadoop.hbase.favored.FavoredNodesManager-">setFavoredNodesManager</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/favored/FavoredNodesPromoter.html" title="interface in org.apache.hadoop.hbase.favored">FavoredNodesPromoter</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="createCandidateGenerators--"> |
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| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>createCandidateGenerators</h4> |
| <pre>protected <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><<a href="../../../../../../org/apache/hadoop/hbase/master/balancer/CandidateGenerator.html" title="class in org.apache.hadoop.hbase.master.balancer">CandidateGenerator</a>> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.html#line.86">createCandidateGenerators</a>()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html#createCandidateGenerators--">createCandidateGenerators</a></code> in class <code><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html" title="class in org.apache.hadoop.hbase.master.balancer">StochasticLoadBalancer</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="roundRobinAssignment-java.util.List-java.util.List-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
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| <h4>roundRobinAssignment</h4> |
| <pre>@NonNull |
| public <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><<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><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.html#line.109">roundRobinAssignment</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><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>> regions, |
| <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><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> servers) |
| throws <a href="../../../../../../org/apache/hadoop/hbase/HBaseIOException.html" title="class in org.apache.hadoop.hbase">HBaseIOException</a></pre> |
| <div class="block">Round robin assignment: Segregate the regions into two types: |
| |
| 1. The regions that have favored node assignment where at least one of the favored node |
| is still alive. In this case, try to adhere to the current favored nodes assignment as |
| much as possible - i.e., if the current primary is gone, then make the secondary or |
| tertiary as the new host for the region (based on their current load). Note that we don't |
| change the favored node assignments here (even though one or more favored node is |
| currently down). That will be done by the admin operations. |
| |
| 2. The regions that currently don't have favored node assignments. Generate favored nodes |
| for them and then assign. Generate the primary fn in round robin fashion and generate |
| secondary and tertiary as per favored nodes constraints.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html#roundRobinAssignment-java.util.List-java.util.List-">roundRobinAssignment</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html" title="interface in org.apache.hadoop.hbase.master">LoadBalancer</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#roundRobinAssignment-java.util.List-java.util.List-">roundRobinAssignment</a></code> in class <code><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html" title="class in org.apache.hadoop.hbase.master.balancer">BaseLoadBalancer</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>regions</code> - all regions</dd> |
| <dd><code>servers</code> - all servers</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>map of server to the regions it should take, or emptyMap if no |
| assignment is possible (ie. no servers)</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/HBaseIOException.html" title="class in org.apache.hadoop.hbase">HBaseIOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="mergeAssignmentMaps-java.util.Map-java.util.Map-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>mergeAssignmentMaps</h4> |
| <pre>private void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.html#line.147">mergeAssignmentMaps</a>(<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><<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><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>> assignmentMap, |
| <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><<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><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>> otherAssignments)</pre> |
| </li> |
| </ul> |
| <a name="generateFNForRegionsWithoutFN-org.apache.hadoop.hbase.favored.FavoredNodeAssignmentHelper-java.util.List-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>generateFNForRegionsWithoutFN</h4> |
| <pre>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><<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><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.html#line.165">generateFNForRegionsWithoutFN</a>(<a href="../../../../../../org/apache/hadoop/hbase/favored/FavoredNodeAssignmentHelper.html" title="class in org.apache.hadoop.hbase.favored">FavoredNodeAssignmentHelper</a> helper, |
| <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><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>> regions) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="segregateRegionsAndAssignRegionsWithFavoredNodes-java.util.Collection-java.util.List-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>segregateRegionsAndAssignRegionsWithFavoredNodes</h4> |
| <pre>private <a href="../../../../../../org/apache/hadoop/hbase/util/Pair.html" title="class in org.apache.hadoop.hbase.util">Pair</a><<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><<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><<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/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.html#line.183">segregateRegionsAndAssignRegionsWithFavoredNodes</a>(<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><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>> regions, |
| <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><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> onlineServers) |
| throws <a href="../../../../../../org/apache/hadoop/hbase/HBaseIOException.html" title="class in org.apache.hadoop.hbase">HBaseIOException</a></pre> |
| <div class="block">Return a pair - one with assignments when favored nodes are present and another with regions |
| without favored nodes.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/HBaseIOException.html" title="class in org.apache.hadoop.hbase">HBaseIOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="addRegionToMap-java.util.Map-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.ServerName-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>addRegionToMap</h4> |
| <pre>private void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.html#line.221">addRegionToMap</a>(<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><<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><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>> assignmentMapForFavoredNodes, |
| <a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> region, |
| <a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a> host)</pre> |
| </li> |
| </ul> |
| <a name="getServerFromFavoredNode-java.util.List-org.apache.hadoop.hbase.ServerName-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getServerFromFavoredNode</h4> |
| <pre>private <a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.html#line.235">getServerFromFavoredNode</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><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> servers, |
| <a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a> fn)</pre> |
| <div class="block">Get the ServerName for the FavoredNode. Since FN's startcode is -1, we could want to get the |
| ServerName with the correct start code from the list of provided servers.</div> |
| </li> |
| </ul> |
| <a name="assignRegionToAvailableFavoredNode-java.util.Map-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.ServerName-org.apache.hadoop.hbase.ServerName-org.apache.hadoop.hbase.ServerName-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>assignRegionToAvailableFavoredNode</h4> |
| <pre>private void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.html#line.249">assignRegionToAvailableFavoredNode</a>(<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><<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><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>> assignmentMapForFavoredNodes, |
| <a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> region, |
| <a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a> primaryHost, |
| <a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a> secondaryHost, |
| <a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a> tertiaryHost)</pre> |
| <div class="block">Assign the region to primary if its available. If both secondary and tertiary are available, |
| assign to the host which has less load. Else assign to secondary or tertiary whichever is |
| available (in that order).</div> |
| </li> |
| </ul> |
| <a name="randomAssignment-org.apache.hadoop.hbase.client.RegionInfo-java.util.List-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>randomAssignment</h4> |
| <pre>public <a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.html#line.286">randomAssignment</a>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfo, |
| <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><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> servers) |
| throws <a href="../../../../../../org/apache/hadoop/hbase/HBaseIOException.html" title="class in org.apache.hadoop.hbase">HBaseIOException</a></pre> |
| <div class="block">If we have favored nodes for a region, we will return one of the FN as destination. If |
| favored nodes are not present for a region, we will generate and return one of the FN as |
| destination. If we can't generate anything, lets fallback.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html#randomAssignment-org.apache.hadoop.hbase.client.RegionInfo-java.util.List-">randomAssignment</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html" title="interface in org.apache.hadoop.hbase.master">LoadBalancer</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#randomAssignment-org.apache.hadoop.hbase.client.RegionInfo-java.util.List-">randomAssignment</a></code> in class <code><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html" title="class in org.apache.hadoop.hbase.master.balancer">BaseLoadBalancer</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>regionInfo</code> - Region for which this selection is being done.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/HBaseIOException.html" title="class in org.apache.hadoop.hbase">HBaseIOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="updateFavoredNodesForRegion-org.apache.hadoop.hbase.client.RegionInfo-java.util.List-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>updateFavoredNodesForRegion</h4> |
| <pre>private void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.html#line.324">updateFavoredNodesForRegion</a>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfo, |
| <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><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> newFavoredNodes) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="retainAssignment-java.util.Map-java.util.List-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>retainAssignment</h4> |
| <pre>@NonNull |
| public <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><<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><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.html#line.336">retainAssignment</a>(<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><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>,<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> regions, |
| <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><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> servers) |
| throws <a href="../../../../../../org/apache/hadoop/hbase/HBaseIOException.html" title="class in org.apache.hadoop.hbase">HBaseIOException</a></pre> |
| <div class="block">Reuse BaseLoadBalancer's retainAssignment, but generate favored nodes when its missing.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html#retainAssignment-java.util.Map-java.util.List-">retainAssignment</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/master/LoadBalancer.html" title="interface in org.apache.hadoop.hbase.master">LoadBalancer</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html#retainAssignment-java.util.Map-java.util.List-">retainAssignment</a></code> in class <code><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/BaseLoadBalancer.html" title="class in org.apache.hadoop.hbase.master.balancer">BaseLoadBalancer</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>regions</code> - regions and existing assignment from meta</dd> |
| <dd><code>servers</code> - available servers</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>map of servers and regions to be assigned to them, or emptyMap if no |
| assignment is possible (ie. no servers)</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/HBaseIOException.html" title="class in org.apache.hadoop.hbase">HBaseIOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getOnlineFavoredNodes-java.util.List-java.util.List-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getOnlineFavoredNodes</h4> |
| <pre>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><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.html#line.419">getOnlineFavoredNodes</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><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> onlineServers, |
| <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><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> serversWithoutStartCodes)</pre> |
| <div class="block">Return list of favored nodes that are online.</div> |
| </li> |
| </ul> |
| <a name="getFavoredNodes-org.apache.hadoop.hbase.client.RegionInfo-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getFavoredNodes</h4> |
| <pre>public <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><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.html#line.437">getFavoredNodes</a>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfo)</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/favored/FavoredNodesPromoter.html#getFavoredNodes-org.apache.hadoop.hbase.client.RegionInfo-">getFavoredNodes</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/favored/FavoredNodesPromoter.html" title="interface in org.apache.hadoop.hbase.favored">FavoredNodesPromoter</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="generateFavoredNodesForDaughter-java.util.List-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.client.RegionInfo-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>generateFavoredNodesForDaughter</h4> |
| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.html#line.452">generateFavoredNodesForDaughter</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><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> servers, |
| <a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> parent, |
| <a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionA, |
| <a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionB) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Generate Favored Nodes for daughters during region split. |
| <p/> |
| If the parent does not have FN, regenerates them for the daughters. |
| <p/> |
| If the parent has FN, inherit two FN from parent for each daughter and generate the remaining. |
| The primary FN for both the daughters should be the same as parent. Inherit the secondary FN |
| from the parent but keep it different for each daughter. Choose the remaining FN randomly. This |
| would give us better distribution over a period of time after enough splits.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/favored/FavoredNodesPromoter.html#generateFavoredNodesForDaughter-java.util.List-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.client.RegionInfo-">generateFavoredNodesForDaughter</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/favored/FavoredNodesPromoter.html" title="interface in org.apache.hadoop.hbase.favored">FavoredNodesPromoter</a></code></dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getInheritedFNForDaughter-org.apache.hadoop.hbase.favored.FavoredNodeAssignmentHelper-java.util.List-org.apache.hadoop.hbase.favored.FavoredNodesPlan.Position-org.apache.hadoop.hbase.favored.FavoredNodesPlan.Position-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getInheritedFNForDaughter</h4> |
| <pre>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util">Set</a><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.html#line.481">getInheritedFNForDaughter</a>(<a href="../../../../../../org/apache/hadoop/hbase/favored/FavoredNodeAssignmentHelper.html" title="class in org.apache.hadoop.hbase.favored">FavoredNodeAssignmentHelper</a> helper, |
| <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><<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>> parentFavoredNodes, |
| <a href="../../../../../../org/apache/hadoop/hbase/favored/FavoredNodesPlan.Position.html" title="enum in org.apache.hadoop.hbase.favored">FavoredNodesPlan.Position</a> primary, |
| <a href="../../../../../../org/apache/hadoop/hbase/favored/FavoredNodesPlan.Position.html" title="enum in org.apache.hadoop.hbase.favored">FavoredNodesPlan.Position</a> secondary) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="generateFavoredNodesForMergedRegion-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.client.RegionInfo:A-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>generateFavoredNodesForMergedRegion</h4> |
| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.html#line.506">generateFavoredNodesForMergedRegion</a>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> merged, |
| <a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>[] mergeParents) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Generate favored nodes for a region during merge. Choose the FN from one of the sources to |
| keep it simple.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/favored/FavoredNodesPromoter.html#generateFavoredNodesForMergedRegion-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.client.RegionInfo:A-">generateFavoredNodesForMergedRegion</a></code> in interface <code><a href="../../../../../../org/apache/hadoop/hbase/favored/FavoredNodesPromoter.html" title="interface in org.apache.hadoop.hbase.favored">FavoredNodesPromoter</a></code></dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="balanceTable-org.apache.hadoop.hbase.TableName-java.util.Map-"> |
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| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>balanceTable</h4> |
| <pre>protected <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><<a href="../../../../../../org/apache/hadoop/hbase/master/RegionPlan.html" title="class in org.apache.hadoop.hbase.master">RegionPlan</a>> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/balancer/FavoredStochasticBalancer.html#line.657">balanceTable</a>(<a href="../../../../../../org/apache/hadoop/hbase/TableName.html" title="class in org.apache.hadoop.hbase">TableName</a> tableName, |
| <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><<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><<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>>> loadOfOneTable)</pre> |
| <div class="block">For all regions correctly assigned to favored nodes, we just use the stochastic balancer |
| implementation. For the misplaced regions, we assign a bogus server to it and AM takes care.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html#balanceTable-org.apache.hadoop.hbase.TableName-java.util.Map-">balanceTable</a></code> in class <code><a href="../../../../../../org/apache/hadoop/hbase/master/balancer/StochasticLoadBalancer.html" title="class in org.apache.hadoop.hbase.master.balancer">StochasticLoadBalancer</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>tableName</code> - the table to be balanced</dd> |
| <dd><code>loadOfOneTable</code> - region load of servers for the specific one table</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>List of plans</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| </div> |
| <!-- ========= END OF CLASS DATA ========= --> |
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