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Posted to commits@hbase.apache.org by gi...@apache.org on 2019/05/13 14:50:37 UTC
[hbase-site] branch asf-site updated: Published site at
62ad94c2b5d278210d24329850402c22c26c928c.
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git-site-role pushed a commit to branch asf-site
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The following commit(s) were added to refs/heads/asf-site by this push:
new b77546b Published site at 62ad94c2b5d278210d24329850402c22c26c928c.
b77546b is described below
commit b77546bbca6616df738a7cd10cad3993e1e65cb1
Author: jenkins <bu...@apache.org>
AuthorDate: Mon May 13 14:50:18 2019 +0000
Published site at 62ad94c2b5d278210d24329850402c22c26c928c.
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<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/master/HMaster.html#checkUnsupportedProcedure-java.util.Map-">checkUnsupportedProcedure(Map<Class<? extends Procedure>, List<Procedure<MasterProcedureEnv>>>)</a></span> - Method in class org.apache.hadoop.hbase.master.<a href="org/apache/hadoop/hbase/master/HMaster.html" title="class in org.apache.hadoop.hbase.master">HMaster</a></dt>
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<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/tool/Canary.RegionStdOutSink.html#perTableReadLatency">perTableReadLatency</a></span> - Variable in class org.apache.hadoop.hbase.tool.<a href="org/apache/hadoop/hbase/tool/Canary.RegionStdOutSink.html" title="class in org.apache.hadoop.hbase.tool">Canary.RegionStdOutSink</a></dt>
<dd> </dd>
<dt><span class="memberNameLink"><a href="org/apache/hadoop/hbase/mapred/Driver.html#pgd">pgd</a></span> - Static variable in class org.apache.hadoop.hbase.mapred.<a href="org/apache/hadoop/hbase/mapred/Driver.html" title="class in org.apache.hadoop.hbase.mapred">Driver</a></dt>
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<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>> hris,
<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> </td>
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<td class="colFirst"><code>private void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/assignment/AssignmentManager.html#processAssignQueue--">processAssignQueue</a></span>()</code> </td>
</tr>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/assignment/AssignmentManager.html#processOfflineRegions--">processOfflineRegions</a></span>()</code>
<div class="block">Create assign procedure for offline regions.</div>
</td>
</tr>
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<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/assignment/AssignmentManager.html#queueAssign-org.apache.hadoop.hbase.master.assignment.RegionStateNode-">queueAssign</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/assignment/RegionStateNode.html" title="class in org.apache.hadoop.hbase.master.assignment">RegionStateNode</a> regionNode)</code>
<div class="block">Add the assign operation to the assignment queue.</div>
</td>
</tr>
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<td class="colFirst"><code>(package private) void</code></td>
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<td class="colFirst"><code>(package private) void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/assignment/AssignmentManager.html#regionClosing-org.apache.hadoop.hbase.master.assignment.RegionStateNode-">regionClosing</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/assignment/RegionStateNode.html" title="class in org.apache.hadoop.hbase.master.assignment">RegionStateNode</a> regionNode)</code> </td>
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<td class="colFirst"><code>(package private) void</code></td>
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boolean giveUp)</code> </td>
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<td class="colFirst"><code>(package private) void</code></td>
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<td class="colFirst"><code>(package private) void</code></td>
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<td class="colFirst"><code>void</code></td>
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<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><byte[]> regionNames)</code>
<div class="block">The master will call this method when the RS send the regionServerReport().</div>
</td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/assignment/AssignmentManager.html#reportRegionStateTransition-org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.ReportRegionStateTransitionRequest-">reportRegionStateTransition</a></span>(org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.ReportRegionStateTransitionRequest req)</code> </td>
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<td class="colFirst"><code>private void</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/assignment/AssignmentManager.html#reportTransition-org.apache.hadoop.hbase.master.assignment.RegionStateNode-org.apache.hadoop.hbase.master.assignment.ServerStateNode-org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionStateTransition.TransitionCode-long-long-">reportTransition</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/as [...]
<a href="../../../../../../org/apache/hadoop/hbase/master/assignment/ServerStateNode.html" title="class in org.apache.hadoop.hbase.master.assignment">ServerStateNode</a> serverNode,
@@ -754,53 +761,53 @@ extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html
long seqId,
long procId)</code> </td>
</tr>
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<td class="colFirst"><code>private void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/assignment/AssignmentManager.html#setMetaAssigned-org.apache.hadoop.hbase.client.RegionInfo-boolean-">setMetaAssigned</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> metaRegionInfo,
boolean assigned)</code> </td>
</tr>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/assignment/AssignmentManager.html#setupRIT-java.util.List-">setupRIT</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/master/assignment/TransitRegionStateProcedure.html" title="class in org.apache.hadoop.hbase.master.assignme [...]
<div class="block">Create RegionStateNode based on the TRSP list, and attach the TRSP to the RegionStateNode.</div>
</td>
</tr>
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<td class="colFirst"><code>private boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/assignment/AssignmentManager.html#shouldAssignFavoredNodes-org.apache.hadoop.hbase.client.RegionInfo-">shouldAssignFavoredNodes</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> region)</code> </td>
</tr>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/assignment/AssignmentManager.html#start--">start</a></span>()</code> </td>
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<td class="colFirst"><code>private void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/assignment/AssignmentManager.html#startAssignmentThread--">startAssignmentThread</a></span>()</code> </td>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/assignment/AssignmentManager.html#stop--">stop</a></span>()</code> </td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/assignment/AssignmentManager.html#stopAssignmentThread--">stopAssignmentThread</a></span>()</code> </td>
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<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/assignment/AssignmentManager.html#submitServerCrash-org.apache.hadoop.hbase.ServerName-boolean-">submitServerCrash</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a> serverName,
boolean shouldSplitWal)</code> </td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/assignment/AssignmentManager.html#transitStateAndUpdate-org.apache.hadoop.hbase.master.assignment.RegionStateNode-org.apache.hadoop.hbase.master.RegionState.State-org.apache.hadoop.hbase.master.RegionState.State...-">transitStateAndUpdate</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/assignment/RegionStateNode.html" title="class in org.apache.hadoop.hbas [...]
<a href="../../../../../../org/apache/hadoop/hbase/master/RegionState.State.html" title="enum in org.apache.hadoop.hbase.master">RegionState.State</a> newState,
<a href="../../../../../../org/apache/hadoop/hbase/master/RegionState.State.html" title="enum in org.apache.hadoop.hbase.master">RegionState.State</a>... expectedStates)</code> </td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/assignment/AssignmentManager.html#unassign-org.apache.hadoop.hbase.client.RegionInfo-">unassign</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfo)</code> </td>
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<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> hriA,
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<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> hriA,
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<td class="colFirst"><code>private void</code></td>
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org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionStateTransition.TransitionCode state,
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long seqId,
long procId)</code> </td>
</tr>
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<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/assignment/AssignmentManager.html#waitMetaAssigned-org.apache.hadoop.hbase.procedure2.Procedure-org.apache.hadoop.hbase.client.RegionInfo-">waitMetaAssigned</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a><?> proc,
<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfo)</code>
<div class="block">Notice that this event does not mean the AM has already finished region state rebuilding.</div>
</td>
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<td class="colFirst"><code>boolean</code></td>
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<div class="block">Wait until AM finishes the meta loading, i.e, the region states rebuilding.</div>
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+</dl>
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+</ul>
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+ org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionStateTransition.TransitionCode transitionCode,
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+ 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>
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<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
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- 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>
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+ <a href="../../../../../../org/apache/hadoop/hbase/master/assignment/RegionStateNode.html" title="class in org.apache.hadoop.hbase.master.assignment">RegionStateNode</a> regionNode,
+ long seqId)
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<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
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+public class <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/assignment/OpenRegionProcedure.html#line.41">OpenRegionProcedure</a>
extends <a href="../../../../../../org/apache/hadoop/hbase/master/assignment/RegionRemoteProcedureBase.html" title="class in org.apache.hadoop.hbase.master.assignment">RegionRemoteProcedureBase</a></pre>
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</tr>
<tr id="i0" class="altColor">
<td class="colFirst"><code>protected void</code></td>
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+ long openSeqNum)</code> </td>
+</tr>
+<tr id="i1" class="rowColor">
+<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/assignment/OpenRegionProcedure.html#deserializeStateData-org.apache.hadoop.hbase.procedure2.ProcedureStateSerializer-">deserializeStateData</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/procedure2/ProcedureStateSerializer.html" title="interface in org.apache.hadoop.hbase.procedure2">ProcedureStateSerializer</a> serializer)</code>
<div class="block">Called on store load to allow the user to decode the previously serialized
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<div class="block">Override this method to provide procedure specific counters for submitted count, failed
count and time histogram.</div>
</td>
</tr>
-<tr id="i2" class="altColor">
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<td class="colFirst"><code><a href="../../../../../../org/apache/hadoop/hbase/master/procedure/TableProcedureInterface.TableOperationType.html" title="enum in org.apache.hadoop.hbase.master.procedure">TableProcedureInterface.TableOperationType</a></code></td>
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</td>
</tr>
-<tr id="i3" class="rowColor">
+<tr id="i4" class="altColor">
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</td>
</tr>
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<td class="colFirst"><code>protected void</code></td>
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<div class="block">The user-level code of the procedure may have some state to
persist (e.g.</div>
</td>
</tr>
-<tr id="i6" class="altColor">
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+ <a href="../../../../../../org/apache/hadoop/hbase/master/assignment/RegionStateNode.html" title="class in org.apache.hadoop.hbase.master.assignment">RegionStateNode</a> regionNode,
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+ 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>
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<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
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+ <a href="../../../../../../org/apache/hadoop/hbase/master/assignment/RegionStateNode.html" title="class in org.apache.hadoop.hbase.master.assignment">RegionStateNode</a> regionNode,
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<tr id="i2" class="altColor">
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+ long seqId)</code> </td>
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+<tr id="i3" class="rowColor">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/assignment/RegionRemoteProcedureBase.html#deserializeStateData-org.apache.hadoop.hbase.procedure2.ProcedureStateSerializer-">deserializeStateData</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/procedure2/ProcedureStateSerializer.html" title="interface in org.apache.hadoop.hbase.procedure2">ProcedureStateSerializer</a> serializer)</code>
<div class="block">Called on store load to allow the user to decode the previously serialized
state.</div>
</td>
</tr>
-<tr id="i3" class="rowColor">
+<tr id="i4" class="altColor">
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<div class="block">The main code of the procedure.</div>
</td>
</tr>
-<tr id="i4" class="altColor">
+<tr id="i5" class="rowColor">
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</tr>
-<tr id="i5" class="rowColor">
+<tr id="i6" class="altColor">
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<td class="colFirst"><code><a href="../../../../../../org/apache/hadoop/hbase/TableName.html" title="class in org.apache.hadoop.hbase">TableName</a></code></td>
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</tr>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/assignment/RegionRemoteProcedureBase.html#remoteOperationCompleted-org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv-">remoteOperationCompleted</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/procedure/MasterProcedureEnv.html" title="class in org.apache.hadoop.hbase.master.procedure">MasterProcedureEnv</a> env)</code>
<div class="block">Called when RS tells the remote procedure is succeeded through the
<code>reportProcedureDone</code> method.</div>
</td>
</tr>
-<tr id="i10" class="altColor">
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/assignment/RegionRemoteProcedureBase.html#remoteOperationFailed-org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv-org.apache.hadoop.hbase.procedure2.RemoteProcedureException-">remoteOperationFailed</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/procedure/MasterProcedureEnv.html" title="class in org.apache.hadoop.hbase.master.procedure">MasterPro [...]
<a href="../../../../../../org/apache/hadoop/hbase/procedure2/RemoteProcedureException.html" title="class in org.apache.hadoop.hbase.procedure2">RemoteProcedureException</a> error)</code>
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method.</div>
</td>
</tr>
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<td class="colFirst"><code>(package private) void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/assignment/RegionRemoteProcedureBase.html#reportTransition-org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv-org.apache.hadoop.hbase.master.assignment.RegionStateNode-org.apache.hadoop.hbase.ServerName-org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionStateTransition.TransitionCode-long-">reportTransition</a></span>(<a href="../../../.. [...]
<a href="../../../../../../org/apache/hadoop/hbase/master/assignment/RegionStateNode.html" title="class in org.apache.hadoop.hbase.master.assignment">RegionStateNode</a> regionNode,
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org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionStateTransition.TransitionCode transitionCode,
long seqId)</code> </td>
</tr>
-<tr id="i12" class="altColor">
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<td class="colFirst"><code>protected abstract void</code></td>
-<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/assignment/RegionRemoteProcedureBase.html#reportTransition-org.apache.hadoop.hbase.master.assignment.RegionStateNode-org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionStateTransition.TransitionCode-long-">reportTransition</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/assignment/RegionStateNode.html" title="class in org.apac [...]
- org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionStateTransition.TransitionCode transitionCode,
- long seqId)</code> </td>
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+ <a href="../../../../../../org/apache/hadoop/hbase/master/assignment/RegionStateNode.html" title="class in org.apache.hadoop.hbase.master.assignment">RegionStateNode</a> regionNode,
+ long seqId)</code> </td>
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-<tr id="i13" class="rowColor">
+<tr id="i14" class="altColor">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/assignment/RegionRemoteProcedureBase.html#rollback-org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv-">rollback</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/procedure/MasterProcedureEnv.html" title="class in org.apache.hadoop.hbase.master.procedure">MasterProcedureEnv</a> env)</code>
<div class="block">The code to undo what was done by the execute() code.</div>
</td>
</tr>
-<tr id="i14" class="altColor">
+<tr id="i15" class="rowColor">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/assignment/RegionRemoteProcedureBase.html#serializeStateData-org.apache.hadoop.hbase.procedure2.ProcedureStateSerializer-">serializeStateData</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/procedure2/ProcedureStateSerializer.html" title="interface in org.apache.hadoop.hbase.procedure2">ProcedureStateSerializer</a> serializer)</code>
<div class="block">The user-level code of the procedure may have some state to
persist (e.g.</div>
</td>
</tr>
-<tr id="i15" class="rowColor">
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<td class="colFirst"><code>(package private) void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/assignment/RegionRemoteProcedureBase.html#serverCrashed-org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv-org.apache.hadoop.hbase.master.assignment.RegionStateNode-org.apache.hadoop.hbase.ServerName-">serverCrashed</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/procedure/MasterProcedureEnv.html" title="class in org.apache.hadoop.hbase.master.pro [...]
<a href="../../../../../../org/apache/hadoop/hbase/master/assignment/RegionStateNode.html" title="class in org.apache.hadoop.hbase.master.assignment">RegionStateNode</a> regionNode,
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</tr>
-<tr id="i16" class="altColor">
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+</tr>
+<tr id="i18" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/assignment/RegionRemoteProcedureBase.html#storeInDispatchedQueue--">storeInDispatchedQueue</a></span>()</code>
<div class="block">Whether store this remote procedure in dispatched queue
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<td class="colFirst"><code>private void</code></td>
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+<dt><span class="throwsLabel">Throws:</span></dt>
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<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
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+ <a href="../../../../../../org/apache/hadoop/hbase/master/assignment/RegionStateNode.html" title="class in org.apache.hadoop.hbase.master.assignment">RegionStateNode</a> regionNode,
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</tr>
<tbody>
<tr class="altColor">
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</td>
</tr>
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<td class="colFirst"><code>protected abstract void</code></td>
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</td>
</tr>
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<td class="colFirst"><code>(package private) boolean</code></td>
<td class="colLast"><span class="typeNameLabel">RegionStates.</span><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/master/assignment/RegionStates.html#include-org.apache.hadoop.hbase.master.assignment.RegionStateNode-boolean-">include</a></span>(<a href="../../../../../../../org/apache/hadoop/hbase/master/assignment/RegionStateNode.html" title="class in org.apache.hadoop.hbase.master.assignment">RegionStateNode</a> node,
boolean offline)</code>
<div class="block">Utility.</div>
</td>
</tr>
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<td class="colFirst"><code>private void</code></td>
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</tr>
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<td class="colFirst"><code>private void</code></td>
<td class="colLast"><span class="typeNameLabel">RegionRemoteProcedureBase.</span><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/master/assignment/RegionRemoteProcedureBase.html#persistAndWake-org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv-org.apache.hadoop.hbase.master.assignment.RegionStateNode-">persistAndWake</a></span>(<a href="../../../../../../../org/apache/hadoop/hbase/master/procedure/MasterProcedureEnv.html" title="class in [...]
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</tr>
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<tr class="altColor">
<td class="colFirst"><code>private void</code></td>
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<tr class="rowColor">
<td class="colFirst"><code>(package private) void</code></td>
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boolean giveUp)</code> </td>
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<td class="colFirst"><code>protected void</code></td>
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<tr class="altColor">
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-<span class="sourceLineNo">837</span> // ============================================================================================<a name="line.837"></a>
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+<span class="sourceLineNo">245</span> // make sure that, only the last one can take the charge, the previous ones should have all<a name="line.245"></a>
+<span class="sourceLineNo">246</span> // been finished already. So here we will compare the proc id, the greater one will win.<a name="line.246"></a>
+<span class="sourceLineNo">247</span> if (existingProc.getProcId() < proc.getProcId()) {<a name="line.247"></a>
+<span class="sourceLineNo">248</span> // the new one wins, unset and set it to the new one below<a name="line.248"></a>
+<span class="sourceLineNo">249</span> regionNode.unsetProcedure(existingProc);<a name="line.249"></a>
+<span class="sourceLineNo">250</span> } else {<a name="line.250"></a>
+<span class="sourceLineNo">251</span> // the old one wins, skip<a name="line.251"></a>
+<span class="sourceLineNo">252</span> return;<a name="line.252"></a>
+<span class="sourceLineNo">253</span> }<a name="line.253"></a>
+<span class="sourceLineNo">254</span> }<a name="line.254"></a>
+<span class="sourceLineNo">255</span> LOG.info("Attach {} to {} to restore RIT", proc, regionNode);<a name="line.255"></a>
+<span class="sourceLineNo">256</span> regionNode.setProcedure(proc);<a name="line.256"></a>
+<span class="sourceLineNo">257</span> });<a name="line.257"></a>
+<span class="sourceLineNo">258</span> }<a name="line.258"></a>
+<span class="sourceLineNo">259</span><a name="line.259"></a>
+<span class="sourceLineNo">260</span> public void stop() {<a name="line.260"></a>
+<span class="sourceLineNo">261</span> if (!running.compareAndSet(true, false)) {<a name="line.261"></a>
+<span class="sourceLineNo">262</span> return;<a name="line.262"></a>
+<span class="sourceLineNo">263</span> }<a name="line.263"></a>
+<span class="sourceLineNo">264</span><a name="line.264"></a>
+<span class="sourceLineNo">265</span> LOG.info("Stopping assignment manager");<a name="line.265"></a>
+<span class="sourceLineNo">266</span><a name="line.266"></a>
+<span class="sourceLineNo">267</span> // The AM is started before the procedure executor,<a name="line.267"></a>
+<span class="sourceLineNo">268</span> // but the actual work will be loaded/submitted only once we have the executor<a name="line.268"></a>
+<span class="sourceLineNo">269</span> final boolean hasProcExecutor = master.getMasterProcedureExecutor() != null;<a name="line.269"></a>
+<span class="sourceLineNo">270</span><a name="line.270"></a>
+<span class="sourceLineNo">271</span> // Remove the RIT chore<a name="line.271"></a>
+<span class="sourceLineNo">272</span> if (hasProcExecutor) {<a name="line.272"></a>
+<span class="sourceLineNo">273</span> master.getMasterProcedureExecutor().removeChore(this.ritChore);<a name="line.273"></a>
+<span class="sourceLineNo">274</span> }<a name="line.274"></a>
+<span class="sourceLineNo">275</span><a name="line.275"></a>
+<span class="sourceLineNo">276</span> // Stop the Assignment Thread<a name="line.276"></a>
+<span class="sourceLineNo">277</span> stopAssignmentThread();<a name="line.277"></a>
+<span class="sourceLineNo">278</span><a name="line.278"></a>
+<span class="sourceLineNo">279</span> // Stop the RegionStateStore<a name="line.279"></a>
+<span class="sourceLineNo">280</span> regionStates.clear();<a name="line.280"></a>
+<span class="sourceLineNo">281</span><a name="line.281"></a>
+<span class="sourceLineNo">282</span> // Update meta events (for testing)<a name="line.282"></a>
+<span class="sourceLineNo">283</span> if (hasProcExecutor) {<a name="line.283"></a>
+<span class="sourceLineNo">284</span> metaLoadEvent.suspend();<a name="line.284"></a>
+<span class="sourceLineNo">285</span> for (RegionInfo hri: getMetaRegionSet()) {<a name="line.285"></a>
+<span class="sourceLineNo">286</span> setMetaAssigned(hri, false);<a name="line.286"></a>
+<span class="sourceLineNo">287</span> }<a name="line.287"></a>
+<span class="sourceLineNo">288</span> }<a name="line.288"></a>
+<span class="sourceLineNo">289</span> }<a name="line.289"></a>
+<span class="sourceLineNo">290</span><a name="line.290"></a>
+<span class="sourceLineNo">291</span> public boolean isRunning() {<a name="line.291"></a>
+<span class="sourceLineNo">292</span> return running.get();<a name="line.292"></a>
+<span class="sourceLineNo">293</span> }<a name="line.293"></a>
+<span class="sourceLineNo">294</span><a name="line.294"></a>
+<span class="sourceLineNo">295</span> public Configuration getConfiguration() {<a name="line.295"></a>
+<span class="sourceLineNo">296</span> return master.getConfiguration();<a name="line.296"></a>
+<span class="sourceLineNo">297</span> }<a name="line.297"></a>
+<span class="sourceLineNo">298</span><a name="line.298"></a>
+<span class="sourceLineNo">299</span> public MetricsAssignmentManager getAssignmentManagerMetrics() {<a name="line.299"></a>
+<span class="sourceLineNo">300</span> return metrics;<a name="line.300"></a>
+<span class="sourceLineNo">301</span> }<a name="line.301"></a>
+<span class="sourceLineNo">302</span><a name="line.302"></a>
+<span class="sourceLineNo">303</span> private LoadBalancer getBalancer() {<a name="line.303"></a>
+<span class="sourceLineNo">304</span> return master.getLoadBalancer();<a name="line.304"></a>
+<span class="sourceLineNo">305</span> }<a name="line.305"></a>
+<span class="sourceLineNo">306</span><a name="line.306"></a>
+<span class="sourceLineNo">307</span> private MasterProcedureEnv getProcedureEnvironment() {<a name="line.307"></a>
+<span class="sourceLineNo">308</span> return master.getMasterProcedureExecutor().getEnvironment();<a name="line.308"></a>
+<span class="sourceLineNo">309</span> }<a name="line.309"></a>
+<span class="sourceLineNo">310</span><a name="line.310"></a>
+<span class="sourceLineNo">311</span> private MasterProcedureScheduler getProcedureScheduler() {<a name="line.311"></a>
+<span class="sourceLineNo">312</span> return getProcedureEnvironment().getProcedureScheduler();<a name="line.312"></a>
+<span class="sourceLineNo">313</span> }<a name="line.313"></a>
+<span class="sourceLineNo">314</span><a name="line.314"></a>
+<span class="sourceLineNo">315</span> int getAssignMaxAttempts() {<a name="line.315"></a>
+<span class="sourceLineNo">316</span> return assignMaxAttempts;<a name="line.316"></a>
+<span class="sourceLineNo">317</span> }<a name="line.317"></a>
+<span class="sourceLineNo">318</span><a name="line.318"></a>
+<span class="sourceLineNo">319</span> int getAssignRetryImmediatelyMaxAttempts() {<a name="line.319"></a>
+<span class="sourceLineNo">320</span> return assignRetryImmediatelyMaxAttempts;<a name="line.320"></a>
+<span class="sourceLineNo">321</span> }<a name="line.321"></a>
+<span class="sourceLineNo">322</span><a name="line.322"></a>
+<span class="sourceLineNo">323</span> public RegionStates getRegionStates() {<a name="line.323"></a>
+<span class="sourceLineNo">324</span> return regionStates;<a name="line.324"></a>
+<span class="sourceLineNo">325</span> }<a name="line.325"></a>
+<span class="sourceLineNo">326</span><a name="line.326"></a>
+<span class="sourceLineNo">327</span> /**<a name="line.327"></a>
+<span class="sourceLineNo">328</span> * Returns the regions hosted by the specified server.<a name="line.328"></a>
+<span class="sourceLineNo">329</span> * <p/><a name="line.329"></a>
+<span class="sourceLineNo">330</span> * Notice that, for SCP, after we submit the SCP, no one can change the region list for the<a name="line.330"></a>
+<span class="sourceLineNo">331</span> * ServerStateNode so we do not need any locks here. And for other usage, this can only give you a<a name="line.331"></a>
+<span class="sourceLineNo">332</span> * snapshot of the current region list for this server, which means, right after you get the<a name="line.332"></a>
+<span class="sourceLineNo">333</span> * region list, new regions may be moved to this server or some regions may be moved out from this<a name="line.333"></a>
+<span class="sourceLineNo">334</span> * server, so you should not use it critically if you need strong consistency.<a name="line.334"></a>
+<span class="sourceLineNo">335</span> */<a name="line.335"></a>
+<span class="sourceLineNo">336</span> public List<RegionInfo> getRegionsOnServer(ServerName serverName) {<a name="line.336"></a>
+<span class="sourceLineNo">337</span> ServerStateNode serverInfo = regionStates.getServerNode(serverName);<a name="line.337"></a>
+<span class="sourceLineNo">338</span> if (serverInfo == null) {<a name="line.338"></a>
+<span class="sourceLineNo">339</span> return Collections.emptyList();<a name="line.339"></a>
+<span class="sourceLineNo">340</span> }<a name="line.340"></a>
+<span class="sourceLineNo">341</span> return serverInfo.getRegionInfoList();<a name="line.341"></a>
+<span class="sourceLineNo">342</span> }<a name="line.342"></a>
+<span class="sourceLineNo">343</span><a name="line.343"></a>
+<span class="sourceLineNo">344</span> public RegionStateStore getRegionStateStore() {<a name="line.344"></a>
+<span class="sourceLineNo">345</span> return regionStateStore;<a name="line.345"></a>
+<span class="sourceLineNo">346</span> }<a name="line.346"></a>
+<span class="sourceLineNo">347</span><a name="line.347"></a>
+<span class="sourceLineNo">348</span> public List<ServerName> getFavoredNodes(final RegionInfo regionInfo) {<a name="line.348"></a>
+<span class="sourceLineNo">349</span> return this.shouldAssignRegionsWithFavoredNodes<a name="line.349"></a>
+<span class="sourceLineNo">350</span> ? ((FavoredStochasticBalancer) getBalancer()).getFavoredNodes(regionInfo)<a name="line.350"></a>
+<span class="sourceLineNo">351</span> : ServerName.EMPTY_SERVER_LIST;<a name="line.351"></a>
+<span class="sourceLineNo">352</span> }<a name="line.352"></a>
+<span class="sourceLineNo">353</span><a name="line.353"></a>
+<span class="sourceLineNo">354</span> // ============================================================================================<a name="line.354"></a>
+<span class="sourceLineNo">355</span> // Table State Manager helpers<a name="line.355"></a>
+<span class="sourceLineNo">356</span> // ============================================================================================<a name="line.356"></a>
+<span class="sourceLineNo">357</span> TableStateManager getTableStateManager() {<a name="line.357"></a>
+<span class="sourceLineNo">358</span> return master.getTableStateManager();<a name="line.358"></a>
+<span class="sourceLineNo">359</span> }<a name="line.359"></a>
+<span class="sourceLineNo">360</span><a name="line.360"></a>
+<span class="sourceLineNo">361</span> public boolean isTableEnabled(final TableName tableName) {<a name="line.361"></a>
+<span class="sourceLineNo">362</span> return getTableStateManager().isTableState(tableName, TableState.State.ENABLED);<a name="line.362"></a>
+<span class="sourceLineNo">363</span> }<a name="line.363"></a>
+<span class="sourceLineNo">364</span><a name="line.364"></a>
+<span class="sourceLineNo">365</span> public boolean isTableDisabled(final TableName tableName) {<a name="line.365"></a>
+<span class="sourceLineNo">366</span> return getTableStateManager().isTableState(tableName,<a name="line.366"></a>
+<span class="sourceLineNo">367</span> TableState.State.DISABLED, TableState.State.DISABLING);<a name="line.367"></a>
+<span class="sourceLineNo">368</span> }<a name="line.368"></a>
+<span class="sourceLineNo">369</span><a name="line.369"></a>
+<span class="sourceLineNo">370</span> // ============================================================================================<a name="line.370"></a>
+<span class="sourceLineNo">371</span> // META Helpers<a name="line.371"></a>
+<span class="sourceLineNo">372</span> // ============================================================================================<a name="line.372"></a>
+<span class="sourceLineNo">373</span> private boolean isMetaRegion(final RegionInfo regionInfo) {<a name="line.373"></a>
+<span class="sourceLineNo">374</span> return regionInfo.isMetaRegion();<a name="line.374"></a>
+<span class="sourceLineNo">375</span> }<a name="line.375"></a>
+<span class="sourceLineNo">376</span><a name="line.376"></a>
+<span class="sourceLineNo">377</span> public boolean isMetaRegion(final byte[] regionName) {<a name="line.377"></a>
+<span class="sourceLineNo">378</span> return getMetaRegionFromName(regionName) != null;<a name="line.378"></a>
+<span class="sourceLineNo">379</span> }<a name="line.379"></a>
+<span class="sourceLineNo">380</span><a name="line.380"></a>
+<span class="sourceLineNo">381</span> public RegionInfo getMetaRegionFromName(final byte[] regionName) {<a name="line.381"></a>
+<span class="sourceLineNo">382</span> for (RegionInfo hri: getMetaRegionSet()) {<a name="line.382"></a>
+<span class="sourceLineNo">383</span> if (Bytes.equals(hri.getRegionName(), regionName)) {<a name="line.383"></a>
+<span class="sourceLineNo">384</span> return hri;<a name="line.384"></a>
+<span class="sourceLineNo">385</span> }<a name="line.385"></a>
+<span class="sourceLineNo">386</span> }<a name="line.386"></a>
+<span class="sourceLineNo">387</span> return null;<a name="line.387"></a>
+<span class="sourceLineNo">388</span> }<a name="line.388"></a>
+<span class="sourceLineNo">389</span><a name="line.389"></a>
+<span class="sourceLineNo">390</span> public boolean isCarryingMeta(final ServerName serverName) {<a name="line.390"></a>
+<span class="sourceLineNo">391</span> // TODO: handle multiple meta<a name="line.391"></a>
+<span class="sourceLineNo">392</span> return isCarryingRegion(serverName, RegionInfoBuilder.FIRST_META_REGIONINFO);<a name="line.392"></a>
+<span class="sourceLineNo">393</span> }<a name="line.393"></a>
+<span class="sourceLineNo">394</span><a name="line.394"></a>
+<span class="sourceLineNo">395</span> private boolean isCarryingRegion(final ServerName serverName, final RegionInfo regionInfo) {<a name="line.395"></a>
+<span class="sourceLineNo">396</span> // TODO: check for state?<a name="line.396"></a>
+<span class="sourceLineNo">397</span> final RegionStateNode node = regionStates.getRegionStateNode(regionInfo);<a name="line.397"></a>
+<span class="sourceLineNo">398</span> return(node != null && serverName.equals(node.getRegionLocation()));<a name="line.398"></a>
+<span class="sourceLineNo">399</span> }<a name="line.399"></a>
+<span class="sourceLineNo">400</span><a name="line.400"></a>
+<span class="sourceLineNo">401</span> private RegionInfo getMetaForRegion(final RegionInfo regionInfo) {<a name="line.401"></a>
+<span class="sourceLineNo">402</span> //if (regionInfo.isMetaRegion()) return regionInfo;<a name="line.402"></a>
+<span class="sourceLineNo">403</span> // TODO: handle multiple meta. if the region provided is not meta lookup<a name="line.403"></a>
+<span class="sourceLineNo">404</span> // which meta the region belongs to.<a name="line.404"></a>
+<span class="sourceLineNo">405</span> return RegionInfoBuilder.FIRST_META_REGIONINFO;<a name="line.405"></a>
+<span class="sourceLineNo">406</span> }<a name="line.406"></a>
+<span class="sourceLineNo">407</span><a name="line.407"></a>
+<span class="sourceLineNo">408</span> // TODO: handle multiple meta.<a name="line.408"></a>
+<span class="sourceLineNo">409</span> private static final Set<RegionInfo> META_REGION_SET =<a name="line.409"></a>
+<span class="sourceLineNo">410</span> Collections.singleton(RegionInfoBuilder.FIRST_META_REGIONINFO);<a name="line.410"></a>
+<span class="sourceLineNo">411</span> public Set<RegionInfo> getMetaRegionSet() {<a name="line.411"></a>
+<span class="sourceLineNo">412</span> return META_REGION_SET;<a name="line.412"></a>
+<span class="sourceLineNo">413</span> }<a name="line.413"></a>
+<span class="sourceLineNo">414</span><a name="line.414"></a>
+<span class="sourceLineNo">415</span> // ============================================================================================<a name="line.415"></a>
+<span class="sourceLineNo">416</span> // META Event(s) helpers<a name="line.416"></a>
+<span class="sourceLineNo">417</span> // ============================================================================================<a name="line.417"></a>
+<span class="sourceLineNo">418</span> /**<a name="line.418"></a>
+<span class="sourceLineNo">419</span> * Notice that, this only means the meta region is available on a RS, but the AM may still be<a name="line.419"></a>
+<span class="sourceLineNo">420</span> * loading the region states from meta, so usually you need to check {@link #isMetaLoaded()} first<a name="line.420"></a>
+<span class="sourceLineNo">421</span> * before checking this method, unless you can make sure that your piece of code can only be<a name="line.421"></a>
+<span class="sourceLineNo">422</span> * executed after AM builds the region states.<a name="line.422"></a>
+<span class="sourceLineNo">423</span> * @see #isMetaLoaded()<a name="line.423"></a>
+<span class="sourceLineNo">424</span> */<a name="line.424"></a>
+<span class="sourceLineNo">425</span> public boolean isMetaAssigned() {<a name="line.425"></a>
+<span class="sourceLineNo">426</span> return metaAssignEvent.isReady();<a name="line.426"></a>
+<span class="sourceLineNo">427</span> }<a name="line.427"></a>
+<span class="sourceLineNo">428</span><a name="line.428"></a>
+<span class="sourceLineNo">429</span> public boolean isMetaRegionInTransition() {<a name="line.429"></a>
+<span class="sourceLineNo">430</span> return !isMetaAssigned();<a name="line.430"></a>
+<span class="sourceLineNo">431</span> }<a name="line.431"></a>
+<span class="sourceLineNo">432</span><a name="line.432"></a>
+<span class="sourceLineNo">433</span> /**<a name="line.433"></a>
+<span class="sourceLineNo">434</span> * Notice that this event does not mean the AM has already finished region state rebuilding. See<a name="line.434"></a>
+<span class="sourceLineNo">435</span> * the comment of {@link #isMetaAssigned()} for more details.<a name="line.435"></a>
+<span class="sourceLineNo">436</span> * @see #isMetaAssigned()<a name="line.436"></a>
+<span class="sourceLineNo">437</span> */<a name="line.437"></a>
+<span class="sourceLineNo">438</span> public boolean waitMetaAssigned(Procedure<?> proc, RegionInfo regionInfo) {<a name="line.438"></a>
+<span class="sourceLineNo">439</span> return getMetaAssignEvent(getMetaForRegion(regionInfo)).suspendIfNotReady(proc);<a name="line.439"></a>
+<span class="sourceLineNo">440</span> }<a name="line.440"></a>
+<span class="sourceLineNo">441</span><a name="line.441"></a>
+<span class="sourceLineNo">442</span> private void setMetaAssigned(RegionInfo metaRegionInfo, boolean assigned) {<a name="line.442"></a>
+<span class="sourceLineNo">443</span> assert isMetaRegion(metaRegionInfo) : "unexpected non-meta region " + metaRegionInfo;<a name="line.443"></a>
+<span class="sourceLineNo">444</span> ProcedureEvent<?> metaAssignEvent = getMetaAssignEvent(metaRegionInfo);<a name="line.444"></a>
+<span class="sourceLineNo">445</span> if (assigned) {<a name="line.445"></a>
+<span class="sourceLineNo">446</span> metaAssignEvent.wake(getProcedureScheduler());<a name="line.446"></a>
+<span class="sourceLineNo">447</span> } else {<a name="line.447"></a>
+<span class="sourceLineNo">448</span> metaAssignEvent.suspend();<a name="line.448"></a>
+<span class="sourceLineNo">449</span> }<a name="line.449"></a>
+<span class="sourceLineNo">450</span> }<a name="line.450"></a>
+<span class="sourceLineNo">451</span><a name="line.451"></a>
+<span class="sourceLineNo">452</span> private ProcedureEvent<?> getMetaAssignEvent(RegionInfo metaRegionInfo) {<a name="line.452"></a>
+<span class="sourceLineNo">453</span> assert isMetaRegion(metaRegionInfo) : "unexpected non-meta region " + metaRegionInfo;<a name="line.453"></a>
+<span class="sourceLineNo">454</span> // TODO: handle multiple meta.<a name="line.454"></a>
+<span class="sourceLineNo">455</span> return metaAssignEvent;<a name="line.455"></a>
+<span class="sourceLineNo">456</span> }<a name="line.456"></a>
+<span class="sourceLineNo">457</span><a name="line.457"></a>
+<span class="sourceLineNo">458</span> /**<a name="line.458"></a>
+<span class="sourceLineNo">459</span> * Wait until AM finishes the meta loading, i.e, the region states rebuilding.<a name="line.459"></a>
+<span class="sourceLineNo">460</span> * @see #isMetaLoaded()<a name="line.460"></a>
+<span class="sourceLineNo">461</span> * @see #waitMetaAssigned(Procedure, RegionInfo)<a name="line.461"></a>
+<span class="sourceLineNo">462</span> */<a name="line.462"></a>
+<span class="sourceLineNo">463</span> public boolean waitMetaLoaded(Procedure<?> proc) {<a name="line.463"></a>
+<span class="sourceLineNo">464</span> return metaLoadEvent.suspendIfNotReady(proc);<a name="line.464"></a>
+<span class="sourceLineNo">465</span> }<a name="line.465"></a>
+<span class="sourceLineNo">466</span><a name="line.466"></a>
+<span class="sourceLineNo">467</span> @VisibleForTesting<a name="line.467"></a>
+<span class="sourceLineNo">468</span> void wakeMetaLoadedEvent() {<a name="line.468"></a>
+<span class="sourceLineNo">469</span> metaLoadEvent.wake(getProcedureScheduler());<a name="line.469"></a>
+<span class="sourceLineNo">470</span> assert isMetaLoaded() : "expected meta to be loaded";<a name="line.470"></a>
+<span class="sourceLineNo">471</span> }<a name="line.471"></a>
+<span class="sourceLineNo">472</span><a name="line.472"></a>
+<span class="sourceLineNo">473</span> /**<a name="line.473"></a>
+<span class="sourceLineNo">474</span> * Return whether AM finishes the meta loading, i.e, the region states rebuilding.<a name="line.474"></a>
+<span class="sourceLineNo">475</span> * @see #isMetaAssigned()<a name="line.475"></a>
+<span class="sourceLineNo">476</span> * @see #waitMetaLoaded(Procedure)<a name="line.476"></a>
+<span class="sourceLineNo">477</span> */<a name="line.477"></a>
+<span class="sourceLineNo">478</span> public boolean isMetaLoaded() {<a name="line.478"></a>
+<span class="sourceLineNo">479</span> return metaLoadEvent.isReady();<a name="line.479"></a>
+<span class="sourceLineNo">480</span> }<a name="line.480"></a>
+<span class="sourceLineNo">481</span><a name="line.481"></a>
+<span class="sourceLineNo">482</span> /**<a name="line.482"></a>
+<span class="sourceLineNo">483</span> * Start a new thread to check if there are region servers whose versions are higher than others.<a name="line.483"></a>
+<span class="sourceLineNo">484</span> * If so, move all system table regions to RS with the highest version to keep compatibility.<a name="line.484"></a>
+<span class="sourceLineNo">485</span> * The reason is, RS in new version may not be able to access RS in old version when there are<a name="line.485"></a>
+<span class="sourceLineNo">486</span> * some incompatible changes.<a name="line.486"></a>
+<span class="sourceLineNo">487</span> * <p>This method is called when a new RegionServer is added to cluster only.</p><a name="line.487"></a>
+<span class="sourceLineNo">488</span> */<a name="line.488"></a>
+<span class="sourceLineNo">489</span> public void checkIfShouldMoveSystemRegionAsync() {<a name="line.489"></a>
+<span class="sourceLineNo">490</span> // TODO: Fix this thread. If a server is killed and a new one started, this thread thinks that<a name="line.490"></a>
+<span class="sourceLineNo">491</span> // it should 'move' the system tables from the old server to the new server but<a name="line.491"></a>
+<span class="sourceLineNo">492</span> // ServerCrashProcedure is on it; and it will take care of the assign without dataloss.<a name="line.492"></a>
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+<span class="sourceLineNo">494</span> return;<a name="line.494"></a>
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+<span class="sourceLineNo">497</span> // childrenChanged notification came in before the nodeDeleted message and so this method<a name="line.497"></a>
+<span class="sourceLineNo">498</span> // cold run before a ServerCrashProcedure could run. That meant that this thread could see<a name="line.498"></a>
+<span class="sourceLineNo">499</span> // a Crashed Server before ServerCrashProcedure and it could find system regions on the<a name="line.499"></a>
+<span class="sourceLineNo">500</span> // crashed server and go move them before ServerCrashProcedure had a chance; could be<a name="line.500"></a>
+<span class="sourceLineNo">501</span> // dataloss too if WALs were not recovered.<a name="line.501"></a>
+<span class="sourceLineNo">502</span> new Thread(() -> {<a name="line.502"></a>
+<span class="sourceLineNo">503</span> try {<a name="line.503"></a>
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+<span class="sourceLineNo">507</span> // version. It looks like it will schedule unnecessary moves.<a name="line.507"></a>
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+<span class="sourceLineNo">512</span> // processing. As region assignments for crashed server is handled by<a name="line.512"></a>
+<span class="sourceLineNo">513</span> // ServerCrashProcedure, do NOT handle them here. The goal is to handle this through<a name="line.513"></a>
+<span class="sourceLineNo">514</span> // regular flow of LoadBalancer as a favored node and not to have this special<a name="line.514"></a>
+<span class="sourceLineNo">515</span> // handling.<a name="line.515"></a>
+<span class="sourceLineNo">516</span> continue;<a name="line.516"></a>
+<span class="sourceLineNo">517</span> }<a name="line.517"></a>
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+<span class="sourceLineNo">520</span> for (RegionInfo regionInfo : regionsShouldMove) {<a name="line.520"></a>
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+<span class="sourceLineNo">524</span> // Must move meta region first.<a name="line.524"></a>
+<span class="sourceLineNo">525</span> LOG.info("Async MOVE of {} to newer Server={}",<a name="line.525"></a>
+<span class="sourceLineNo">526</span> regionInfo.getEncodedName(), server);<a name="line.526"></a>
+<span class="sourceLineNo">527</span> moveAsync(plan);<a name="line.527"></a>
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+<span class="sourceLineNo">532</span> }<a name="line.532"></a>
+<span class="sourceLineNo">533</span> for (RegionPlan plan : plans) {<a name="line.533"></a>
+<span class="sourceLineNo">534</span> LOG.info("Async MOVE of {} to newer Server={}",<a name="line.534"></a>
+<span class="sourceLineNo">535</span> plan.getRegionInfo().getEncodedName(), server);<a name="line.535"></a>
+<span class="sourceLineNo">536</span> moveAsync(plan);<a name="line.536"></a>
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+<span class="sourceLineNo">538</span> }<a name="line.538"></a>
+<span class="sourceLineNo">539</span> }<a name="line.539"></a>
+<span class="sourceLineNo">540</span> } catch (Throwable t) {<a name="line.540"></a>
+<span class="sourceLineNo">541</span> LOG.error(t.toString(), t);<a name="line.541"></a>
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+<span class="sourceLineNo">543</span> }).start();<a name="line.543"></a>
+<span class="sourceLineNo">544</span> }<a name="line.544"></a>
+<span class="sourceLineNo">545</span><a name="line.545"></a>
+<span class="sourceLineNo">546</span> private List<RegionInfo> getSystemTables(ServerName serverName) {<a name="line.546"></a>
+<span class="sourceLineNo">547</span> ServerStateNode serverNode = regionStates.getServerNode(serverName);<a name="line.547"></a>
+<span class="sourceLineNo">548</span> if (serverNode == null) {<a name="line.548"></a>
+<span class="sourceLineNo">549</span> return Collections.emptyList();<a name="line.549"></a>
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+<span class="sourceLineNo">552</span> }<a name="line.552"></a>
+<span class="sourceLineNo">553</span><a name="line.553"></a>
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+<span class="sourceLineNo">555</span> throws HBaseIOException {<a name="line.555"></a>
+<span class="sourceLineNo">556</span> if (regionNode.getProcedure() != null) {<a name="line.556"></a>
+<span class="sourceLineNo">557</span> throw new HBaseIOException(regionNode + " is currently in transition");<a name="line.557"></a>
+<span class="sourceLineNo">558</span> }<a name="line.558"></a>
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+<span class="sourceLineNo">562</span> if (getTableStateManager().isTableState(regionNode.getTable(), TableState.State.DISABLING,<a name="line.562"></a>
+<span class="sourceLineNo">563</span> TableState.State.DISABLED)) {<a name="line.563"></a>
+<span class="sourceLineNo">564</span> throw new DoNotRetryIOException(regionNode.getTable() + " is disabled for " + regionNode);<a name="line.564"></a>
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+<span class="sourceLineNo">566</span> }<a name="line.566"></a>
+<span class="sourceLineNo">567</span><a name="line.567"></a>
+<span class="sourceLineNo">568</span> // TODO: Need an async version of this for hbck2.<a name="line.568"></a>
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+<span class="sourceLineNo">571</span> RegionStateNode regionNode = regionStates.getOrCreateRegionStateNode(regionInfo);<a name="line.571"></a>
+<span class="sourceLineNo">572</span> TransitRegionStateProcedure proc;<a name="line.572"></a>
+<span class="sourceLineNo">573</span> regionNode.lock();<a name="line.573"></a>
+<span class="sourceLineNo">574</span> try {<a name="line.574"></a>
+<span class="sourceLineNo">575</span> preTransitCheck(regionNode, STATES_EXPECTED_ON_ASSIGN);<a name="line.575"></a>
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+<span class="sourceLineNo">577</span> regionNode.setProcedure(proc);<a name="line.577"></a>
+<span class="sourceLineNo">578</span> } finally {<a name="line.578"></a>
+<span class="sourceLineNo">579</span> regionNode.unlock();<a name="line.579"></a>
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+<span class="sourceLineNo">584</span><a name="line.584"></a>
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+<span class="sourceLineNo">587</span> }<a name="line.587"></a>
+<span class="sourceLineNo">588</span><a name="line.588"></a>
+<span class="sourceLineNo">589</span> public long unassign(RegionInfo regionInfo) throws IOException {<a name="line.589"></a>
+<span class="sourceLineNo">590</span> RegionStateNode regionNode = regionStates.getRegionStateNode(regionInfo);<a name="line.590"></a>
+<span class="sourceLineNo">591</span> if (regionNode == null) {<a name="line.591"></a>
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+<span class="sourceLineNo">593</span> }<a name="line.593"></a>
+<span class="sourceLineNo">594</span> TransitRegionStateProcedure proc;<a name="line.594"></a>
+<span class="sourceLineNo">595</span> regionNode.lock();<a name="line.595"></a>
+<span class="sourceLineNo">596</span> try {<a name="line.596"></a>
+<span class="sourceLineNo">597</span> preTransitCheck(regionNode, STATES_EXPECTED_ON_UNASSIGN_OR_MOVE);<a name="line.597"></a>
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+<span class="sourceLineNo">599</span> regionNode.setProcedure(proc);<a name="line.599"></a>
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+<span class="sourceLineNo">603</span> ProcedureSyncWait.submitAndWaitProcedure(master.getMasterProcedureExecutor(), proc);<a name="line.603"></a>
+<span class="sourceLineNo">604</span> return proc.getProcId();<a name="line.604"></a>
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+<span class="sourceLineNo">606</span><a name="line.606"></a>
+<span class="sourceLineNo">607</span> public TransitRegionStateProcedure createMoveRegionProcedure(RegionInfo regionInfo,<a name="line.607"></a>
+<span class="sourceLineNo">608</span> ServerName targetServer) throws HBaseIOException {<a name="line.608"></a>
+<span class="sourceLineNo">609</span> RegionStateNode regionNode = this.regionStates.getRegionStateNode(regionInfo);<a name="line.609"></a>
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+<span class="sourceLineNo">612</span> }<a name="line.612"></a>
+<span class="sourceLineNo">613</span> TransitRegionStateProcedure proc;<a name="line.613"></a>
+<span class="sourceLineNo">614</span> regionNode.lock();<a name="line.614"></a>
+<span class="sourceLineNo">615</span> try {<a name="line.615"></a>
+<span class="sourceLineNo">616</span> preTransitCheck(regionNode, STATES_EXPECTED_ON_UNASSIGN_OR_MOVE);<a name="line.616"></a>
+<span class="sourceLineNo">617</span> regionNode.checkOnline();<a name="line.617"></a>
+<span class="sourceLineNo">618</span> proc = TransitRegionStateProcedure.move(getProcedureEnvironment(), regionInfo, targetServer);<a name="line.618"></a>
+<span class="sourceLineNo">619</span> regionNode.setProcedure(proc);<a name="line.619"></a>
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+<span class="sourceLineNo">622</span> }<a name="line.622"></a>
+<span class="sourceLineNo">623</span> return proc;<a name="line.623"></a>
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+<span class="sourceLineNo">625</span><a name="line.625"></a>
+<span class="sourceLineNo">626</span> public void move(RegionInfo regionInfo) throws IOException {<a name="line.626"></a>
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+<span class="sourceLineNo">628</span> ProcedureSyncWait.submitAndWaitProcedure(master.getMasterProcedureExecutor(), proc);<a name="line.628"></a>
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+<span class="sourceLineNo">630</span><a name="line.630"></a>
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+<span class="sourceLineNo">632</span> TransitRegionStateProcedure proc =<a name="line.632"></a>
+<span class="sourceLineNo">633</span> createMoveRegionProcedure(regionPlan.getRegionInfo(), regionPlan.getDestination());<a name="line.633"></a>
+<span class="sourceLineNo">634</span> return ProcedureSyncWait.submitProcedure(master.getMasterProcedureExecutor(), proc);<a name="line.634"></a>
+<span class="sourceLineNo">635</span> }<a name="line.635"></a>
+<span class="sourceLineNo">636</span><a name="line.636"></a>
+<span class="sourceLineNo">637</span> // ============================================================================================<a name="line.637"></a>
+<span class="sourceLineNo">638</span> // RegionTransition procedures helpers<a name="line.638"></a>
+<span class="sourceLineNo">639</span> // ============================================================================================<a name="line.639"></a>
+<span class="sourceLineNo">640</span><a name="line.640"></a>
+<span class="sourceLineNo">641</span> /**<a name="line.641"></a>
+<span class="sourceLineNo">642</span> * Create round-robin assigns. Use on table creation to distribute out regions across cluster.<a name="line.642"></a>
+<span class="sourceLineNo">643</span> * @return AssignProcedures made out of the passed in <code>hris</code> and a call to the balancer<a name="line.643"></a>
+<span class="sourceLineNo">644</span> * to populate the assigns with targets chosen using round-robin (default balancer<a name="line.644"></a>
+<span class="sourceLineNo">645</span> * scheme). If at assign-time, the target chosen is no longer up, thats fine, the<a name="line.645"></a>
+<span class="sourceLineNo">646</span> * AssignProcedure will ask the balancer for a new target, and so on.<a name="line.646"></a>
+<span class="sourceLineNo">647</span> */<a name="line.647"></a>
+<span class="sourceLineNo">648</span> public TransitRegionStateProcedure[] createRoundRobinAssignProcedures(List<RegionInfo> hris,<a name="line.648"></a>
+<span class="sourceLineNo">649</span> List<ServerName> serversToExclude) {<a name="line.649"></a>
+<span class="sourceLineNo">650</span> if (hris.isEmpty()) {<a name="line.650"></a>
+<span class="sourceLineNo">651</span> return new TransitRegionStateProcedure[0];<a name="line.651"></a>
+<span class="sourceLineNo">652</span> }<a name="line.652"></a>
+<span class="sourceLineNo">653</span><a name="line.653"></a>
+<span class="sourceLineNo">654</span> if (serversToExclude != null<a name="line.654"></a>
+<span class="sourceLineNo">655</span> && this.master.getServerManager().getOnlineServersList().size() == 1) {<a name="line.655"></a>
+<span class="sourceLineNo">656</span> LOG.debug("Only one region server found and hence going ahead with the assignment");<a name="line.656"></a>
+<span class="sourceLineNo">657</span> serversToExclude = null;<a name="line.657"></a>
+<span class="sourceLineNo">658</span> }<a name="line.658"></a>
+<span class="sourceLineNo">659</span> try {<a name="line.659"></a>
+<span class="sourceLineNo">660</span> // Ask the balancer to assign our regions. Pass the regions en masse. The balancer can do<a name="line.660"></a>
+<span class="sourceLineNo">661</span> // a better job if it has all the assignments in the one lump.<a name="line.661"></a>
+<span class="sourceLineNo">662</span> Map<ServerName, List<RegionInfo>> assignments = getBalancer().roundRobinAssignment(hris,<a name="line.662"></a>
+<span class="sourceLineNo">663</span> this.master.getServerManager().createDestinationServersList(serversToExclude));<a name="line.663"></a>
+<span class="sourceLineNo">664</span> // Return mid-method!<a name="line.664"></a>
+<span class="sourceLineNo">665</span> return createAssignProcedures(assignments);<a name="line.665"></a>
+<span class="sourceLineNo">666</span> } catch (HBaseIOException hioe) {<a name="line.666"></a>
+<span class="sourceLineNo">667</span> LOG.warn("Failed roundRobinAssignment", hioe);<a name="line.667"></a>
+<span class="sourceLineNo">668</span> }<a name="line.668"></a>
+<span class="sourceLineNo">669</span> // If an error above, fall-through to this simpler assign. Last resort.<a name="line.669"></a>
+<span class="sourceLineNo">670</span> return createAssignProcedures(hris);<a name="line.670"></a>
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+<span class="sourceLineNo">672</span><a name="line.672"></a>
+<span class="sourceLineNo">673</span> /**<a name="line.673"></a>
+<span class="sourceLineNo">674</span> * Create round-robin assigns. Use on table creation to distribute out regions across cluster.<a name="line.674"></a>
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+<span class="sourceLineNo">676</span> * to populate the assigns with targets chosen using round-robin (default balancer<a name="line.676"></a>
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+<span class="sourceLineNo">679</span> */<a name="line.679"></a>
+<span class="sourceLineNo">680</span> public TransitRegionStateProcedure[] createRoundRobinAssignProcedures(List<RegionInfo> hris) {<a name="line.680"></a>
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+<span class="sourceLineNo">682</span> }<a name="line.682"></a>
+<span class="sourceLineNo">683</span><a name="line.683"></a>
+<span class="sourceLineNo">684</span> @VisibleForTesting<a name="line.684"></a>
+<span class="sourceLineNo">685</span> static int compare(TransitRegionStateProcedure left, TransitRegionStateProcedure right) {<a name="line.685"></a>
+<span class="sourceLineNo">686</span> if (left.getRegion().isMetaRegion()) {<a name="line.686"></a>
+<span class="sourceLineNo">687</span> if (right.getRegion().isMetaRegion()) {<a name="line.687"></a>
+<span class="sourceLineNo">688</span> return RegionInfo.COMPARATOR.compare(left.getRegion(), right.getRegion());<a name="line.688"></a>
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+<span class="sourceLineNo">693</span> }<a name="line.693"></a>
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+<span class="sourceLineNo">696</span> return RegionInfo.COMPARATOR.compare(left.getRegion(), right.getRegion());<a name="line.696"></a>
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+<span class="sourceLineNo">698</span> return -1;<a name="line.698"></a>
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+<span class="sourceLineNo">702</span> return RegionInfo.COMPARATOR.compare(left.getRegion(), right.getRegion());<a name="line.702"></a>
+<span class="sourceLineNo">703</span> }<a name="line.703"></a>
+<span class="sourceLineNo">704</span><a name="line.704"></a>
+<span class="sourceLineNo">705</span> private TransitRegionStateProcedure createAssignProcedure(RegionStateNode regionNode,<a name="line.705"></a>
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+<span class="sourceLineNo">707</span> TransitRegionStateProcedure proc;<a name="line.707"></a>
+<span class="sourceLineNo">708</span> regionNode.lock();<a name="line.708"></a>
+<span class="sourceLineNo">709</span> try {<a name="line.709"></a>
+<span class="sourceLineNo">710</span> if(override && regionNode.getProcedure() != null) {<a name="line.710"></a>
+<span class="sourceLineNo">711</span> regionNode.unsetProcedure(regionNode.getProcedure());<a name="line.711"></a>
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+<span class="sourceLineNo">713</span> assert regionNode.getProcedure() == null;<a name="line.713"></a>
+<span class="sourceLineNo">714</span> proc = TransitRegionStateProcedure.assign(getProcedureEnvironment(),<a name="line.714"></a>
+<span class="sourceLineNo">715</span> regionNode.getRegionInfo(), targetServer);<a name="line.715"></a>
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+<span class="sourceLineNo">719</span> }<a name="line.719"></a>
+<span class="sourceLineNo">720</span> return proc;<a name="line.720"></a>
+<span class="sourceLineNo">721</span> }<a name="line.721"></a>
+<span class="sourceLineNo">722</span><a name="line.722"></a>
+<span class="sourceLineNo">723</span> private TransitRegionStateProcedure createUnassignProcedure(RegionStateNode regionNode,<a name="line.723"></a>
+<span class="sourceLineNo">724</span> boolean override) {<a name="line.724"></a>
+<span class="sourceLineNo">725</span> TransitRegionStateProcedure proc;<a name="line.725"></a>
+<span class="sourceLineNo">726</span> regionNode.lock();<a name="line.726"></a>
+<span class="sourceLineNo">727</span> try {<a name="line.727"></a>
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+<span class="sourceLineNo">729</span> regionNode.unsetProcedure(regionNode.getProcedure());<a name="line.729"></a>
+<span class="sourceLineNo">730</span> }<a name="line.730"></a>
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+<span class="sourceLineNo">733</span> regionNode.getRegionInfo());<a name="line.733"></a>
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+<span class="sourceLineNo">738</span> return proc;<a name="line.738"></a>
+<span class="sourceLineNo">739</span> }<a name="line.739"></a>
+<span class="sourceLineNo">740</span><a name="line.740"></a>
+<span class="sourceLineNo">741</span> /**<a name="line.741"></a>
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+<span class="sourceLineNo">743</span> * This method is specified for HBCK2<a name="line.743"></a>
+<span class="sourceLineNo">744</span> */<a name="line.744"></a>
+<span class="sourceLineNo">745</span> public TransitRegionStateProcedure createOneAssignProcedure(RegionInfo hri, boolean override) {<a name="line.745"></a>
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+<span class="sourceLineNo">747</span> return createAssignProcedure(regionNode, null, override);<a name="line.747"></a>
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+<span class="sourceLineNo">749</span><a name="line.749"></a>
+<span class="sourceLineNo">750</span> /**<a name="line.750"></a>
+<span class="sourceLineNo">751</span> * Create one TransitRegionStateProcedure to unassign a region.<a name="line.751"></a>
+<span class="sourceLineNo">752</span> * This method is specified for HBCK2<a name="line.752"></a>
+<span class="sourceLineNo">753</span> */<a name="line.753"></a>
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+<span class="sourceLineNo">756</span> return createUnassignProcedure(regionNode, override);<a name="line.756"></a>
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+<span class="sourceLineNo">758</span><a name="line.758"></a>
+<span class="sourceLineNo">759</span> /**<a name="line.759"></a>
+<span class="sourceLineNo">760</span> * Create an array of TransitRegionStateProcedure w/o specifying a target server.<a name="line.760"></a>
+<span class="sourceLineNo">761</span> * <p/><a name="line.761"></a>
+<span class="sourceLineNo">762</span> * If no target server, at assign time, we will try to use the former location of the region if<a name="line.762"></a>
+<span class="sourceLineNo">763</span> * one exists. This is how we 'retain' the old location across a server restart.<a name="line.763"></a>
+<span class="sourceLineNo">764</span> * <p/><a name="line.764"></a>
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+<span class="sourceLineNo">766</span> * you. For example, when you are creating table.<a name="line.766"></a>
+<span class="sourceLineNo">767</span> */<a name="line.767"></a>
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+<span class="sourceLineNo">771</span> .sorted(AssignmentManager::compare).toArray(TransitRegionStateProcedure[]::new);<a name="line.771"></a>
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+<span class="sourceLineNo">773</span><a name="line.773"></a>
+<span class="sourceLineNo">774</span> /**<a name="line.774"></a>
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+<span class="sourceLineNo">776</span> * @return Assignments made from the passed in <code>assignments</code><a name="line.776"></a>
+<span class="sourceLineNo">777</span> */<a name="line.777"></a>
+<span class="sourceLineNo">778</span> private TransitRegionStateProcedure[] createAssignProcedures(<a name="line.778"></a>
+<span class="sourceLineNo">779</span> Map<ServerName, List<RegionInfo>> assignments) {<a name="line.779"></a>
+<span class="sourceLineNo">780</span> return assignments.entrySet().stream()<a name="line.780"></a>
+<span class="sourceLineNo">781</span> .flatMap(e -> e.getValue().stream().map(hri -> regionStates.getOrCreateRegionStateNode(hri))<a name="line.781"></a>
+<span class="sourceLineNo">782</span> .map(regionNode -> createAssignProcedure(regionNode, e.getKey(), false)))<a name="line.782"></a>
+<span class="sourceLineNo">783</span> .sorted(AssignmentManager::compare).toArray(TransitRegionStateProcedure[]::new);<a name="line.783"></a>
+<span class="sourceLineNo">784</span> }<a name="line.784"></a>
+<span class="sourceLineNo">785</span><a name="line.785"></a>
+<span class="sourceLineNo">786</span> /**<a name="line.786"></a>
+<span class="sourceLineNo">787</span> * Called by DisableTableProcedure to unassign all the regions for a table.<a name="line.787"></a>
+<span class="sourceLineNo">788</span> */<a name="line.788"></a>
+<span class="sourceLineNo">789</span> public TransitRegionStateProcedure[] createUnassignProceduresForDisabling(TableName tableName) {<a name="line.789"></a>
+<span class="sourceLineNo">790</span> return regionStates.getTableRegionStateNodes(tableName).stream().map(regionNode -> {<a name="line.790"></a>
+<span class="sourceLineNo">791</span> regionNode.lock();<a name="line.791"></a>
+<span class="sourceLineNo">792</span> try {<a name="line.792"></a>
+<span class="sourceLineNo">793</span> if (!regionStates.include(regionNode, false) ||<a name="line.793"></a>
+<span class="sourceLineNo">794</span> regionStates.isRegionOffline(regionNode.getRegionInfo())) {<a name="line.794"></a>
+<span class="sourceLineNo">795</span> return null;<a name="line.795"></a>
+<span class="sourceLineNo">796</span> }<a name="line.796"></a>
+<span class="sourceLineNo">797</span> // As in DisableTableProcedure, we will hold the xlock for table, so we can make sure that<a name="line.797"></a>
+<span class="sourceLineNo">798</span> // this procedure has not been executed yet, as TRSP will hold the shared lock for table all<a name="line.798"></a>
+<span class="sourceLineNo">799</span> // the time. So here we will unset it and when it is actually executed, it will find that<a name="line.799"></a>
+<span class="sourceLineNo">800</span> // the attach procedure is not itself and quit immediately.<a name="line.800"></a>
+<span class="sourceLineNo">801</span> if (regionNode.getProcedure() != null) {<a name="line.801"></a>
+<span class="sourceLineNo">802</span> regionNode.unsetProcedure(regionNode.getProcedure());<a name="line.802"></a>
+<span class="sourceLineNo">803</span> }<a name="line.803"></a>
+<span class="sourceLineNo">804</span> TransitRegionStateProcedure proc = TransitRegionStateProcedure<a name="line.804"></a>
+<span class="sourceLineNo">805</span> .unassign(getProcedureEnvironment(), regionNode.getRegionInfo());<a name="line.805"></a>
+<span class="sourceLineNo">806</span> regionNode.setProcedure(proc);<a name="line.806"></a>
+<span class="sourceLineNo">807</span> return proc;<a name="line.807"></a>
+<span class="sourceLineNo">808</span> } finally {<a name="line.808"></a>
+<span class="sourceLineNo">809</span> regionNode.unlock();<a name="line.809"></a>
+<span class="sourceLineNo">810</span> }<a name="line.810"></a>
+<span class="sourceLineNo">811</span> }).filter(p -> p != null).toArray(TransitRegionStateProcedure[]::new);<a name="line.811"></a>
+<span class="sourceLineNo">812</span> }<a name="line.812"></a>
+<span class="sourceLineNo">813</span><a name="line.813"></a>
+<span class="sourceLineNo">814</span> public SplitTableRegionProcedure createSplitProcedure(final RegionInfo regionToSplit,<a name="line.814"></a>
+<span class="sourceLineNo">815</span> final byte[] splitKey) throws IOException {<a name="line.815"></a>
+<span class="sourceLineNo">816</span> return new SplitTableRegionProcedure(getProcedureEnvironment(), regionToSplit, splitKey);<a name="line.816"></a>
+<span class="sourceLineNo">817</span> }<a name="line.817"></a>
+<span class="sourceLineNo">818</span><a name="line.818"></a>
+<span class="sourceLineNo">819</span> public MergeTableRegionsProcedure createMergeProcedure(final RegionInfo regionToMergeA,<a name="line.819"></a>
+<span class="sourceLineNo">820</span> final RegionInfo regionToMergeB) throws IOException {<a name="line.820"></a>
+<span class="sourceLineNo">821</span> return new MergeTableRegionsProcedure(getProcedureEnvironment(), regionToMergeA,regionToMergeB);<a name="line.821"></a>
+<span class="sourceLineNo">822</span> }<a name="line.822"></a>
+<span class="sourceLineNo">823</span><a name="line.823"></a>
+<span class="sourceLineNo">824</span> /**<a name="line.824"></a>
+<span class="sourceLineNo">825</span> * Delete the region states. This is called by "DeleteTable"<a name="line.825"></a>
+<span class="sourceLineNo">826</span> */<a name="line.826"></a>
+<span class="sourceLineNo">827</span> public void deleteTable(final TableName tableName) throws IOException {<a name="line.827"></a>
+<span class="sourceLineNo">828</span> final ArrayList<RegionInfo> regions = regionStates.getTableRegionsInfo(tableName);<a name="line.828"></a>
+<span class="sourceLineNo">829</span> regionStateStore.deleteRegions(regions);<a name="line.829"></a>
+<span class="sourceLineNo">830</span> for (int i = 0; i < regions.size(); ++i) {<a name="line.830"></a>
+<span class="sourceLineNo">831</span> final RegionInfo regionInfo = regions.get(i);<a name="line.831"></a>
+<span class="sourceLineNo">832</span> // we expect the region to be offline<a name="line.832"></a>
+<span class="sourceLineNo">833</span> regionStates.removeFromOfflineRegions(regionInfo);<a name="line.833"></a>
+<span class="sourceLineNo">834</span> regionStates.deleteRegion(regionInfo);<a name="line.834"></a>
+<span class="sourceLineNo">835</span> }<a name="line.835"></a>
+<span class="sourceLineNo">836</span> }<a name="line.836"></a>
+<span class="sourceLineNo">837</span><a name="line.837"></a>
+<span class="sourceLineNo">838</span> // ============================================================================================<a name="line.838"></a>
+<span class="sourceLineNo">839</span> // RS Region Transition Report helpers<a name="line.839"></a>
+<span class="sourceLineNo">840</span> // ============================================================================================<a name="line.840"></a>
+<span class="sourceLineNo">841</span> private void reportRegionStateTransition(ReportRegionStateTransitionResponse.Builder builder,<a name="line.841"></a>
+<span class="sourceLineNo">842</span> ServerName serverName, List<RegionStateTransition> transitionList) throws IOException {<a name="line.842"></a>
+<span class="sourceLineNo">843</span> for (RegionStateTransition transition : transitionList) {<a name="line.843"></a>
+<span class="sourceLineNo">844</span> switch (transition.getTransitionCode()) {<a name="line.844"></a>
+<span class="sourceLineNo">845</span> case OPENED:<a name="line.845"></a>
+<span class="sourceLineNo">846</span> case FAILED_OPEN:<a name="line.846"></a>
+<span class="sourceLineNo">847</span> case CLOSED:<a name="line.847"></a>
+<span class="sourceLineNo">848</span> assert transition.getRegionInfoCount() == 1 : transition;<a name="line.848"></a>
+<span class="sourceLineNo">849</span> final RegionInfo hri = ProtobufUtil.toRegionInfo(transition.getRegionInfo(0));<a name="line.849"></a>
+<span class="sourceLineNo">850</span> long procId =<a name="line.850"></a>
+<span class="sourceLineNo">851</span> transition.getProcIdCount() > 0 ? transition.getProcId(0) : Procedure.NO_PROC_ID;<a name="line.851"></a>
+<span class="sourceLineNo">852</span> updateRegionTransition(serverName, transition.getTransitionCode(), hri,<a name="line.852"></a>
+<span class="sourceLineNo">853</span> transition.hasOpenSeqNum() ? transition.getOpenSeqNum() : HConstants.NO_SEQNUM, procId);<a name="line.853"></a>
+<span class="sourceLineNo">854</span> break;<a name="line.854"></a>
+<span class="sourceLineNo">855</span> case READY_TO_SPLIT:<a name="line.855"></a>
+<span class="sourceLineNo">856</span> case SPLIT:<a name="line.856"></a>
+<span class="sourceLineNo">857</span> case SPLIT_REVERTED:<a name="line.857"></a>
+<span class="sourceLineNo">858</span> assert transition.getRegionInfoCount() == 3 : transition;<a name="line.858"></a>
+<span class="sourceLineNo">859</span> final RegionInfo parent = ProtobufUtil.toRegionInfo(transition.getRegionInfo(0));<a name="line.859"></a>
+<span class="sourceLineNo">860</span> final RegionInfo splitA = ProtobufUtil.toRegionInfo(transition.getRegionInfo(1));<a name="line.860"></a>
+<span class="sourceLineNo">861</span> final RegionInfo splitB = ProtobufUtil.toRegionInfo(transition.getRegionInfo(2));<a name="line.861"></a>
+<span class="sourceLineNo">862</span> updateRegionSplitTransition(serverName, transition.getTransitionCode(), parent, splitA,<a name="line.862"></a>
+<span class="sourceLineNo">863</span> splitB);<a name="line.863"></a>
+<span class="sourceLineNo">864</span> break;<a name="line.864"></a>
+<span class="sourceLineNo">865</span> case READY_TO_MERGE:<a name="line.865"></a>
+<span class="sourceLineNo">866</span> case MERGED:<a name="line.866"></a>
+<span class="sourceLineNo">867</span> case MERGE_REVERTED:<a name="line.867"></a>
+<span class="sourceLineNo">868</span> assert transition.getRegionInfoCount() == 3 : transition;<a name="line.868"></a>
+<span class="sourceLineNo">869</span> final RegionInfo merged = ProtobufUtil.toRegionInfo(transition.getRegionInfo(0));<a name="line.869"></a>
+<span class="sourceLineNo">870</span> final RegionInfo mergeA = ProtobufUtil.toRegionInfo(transition.getRegionInfo(1));<a name="line.870"></a>
+<span class="sourceLineNo">871</span> final RegionInfo mergeB = ProtobufUtil.toRegionInfo(transition.getRegionInfo(2));<a name="line.871"></a>
+<span class="sourceLineNo">872</span> updateRegionMergeTransition(serverName, transition.getTransitionCode(), merged, mergeA,<a name="line.872"></a>
+<span class="sourceLineNo">873</span> mergeB);<a name="line.873"></a>
+<span class="sourceLineNo">874</span> break;<a name="line.874"></a>
+<span class="sourceLineNo">875</span> }<a name="line.875"></a>
+<span class="sourceLineNo">876</span> }<a name="line.876"></a>
+<span class="sourceLineNo">877</span> }<a name="line.877"></a>
+<span class="sourceLineNo">878</span><a name="line.878"></a>
+<span class="sourceLineNo">879</span> public ReportRegionStateTransitionResponse reportRegionStateTransition(<a name="line.879"></a>
+<span class="sourceLineNo">880</span> final ReportRegionStateTransitionRequest req) throws PleaseHoldException {<a name="line.880"></a>
+<span class="sourceLineNo">881</span> ReportRegionStateTransitionResponse.Builder builder =<a name="line.881"></a>
+<span class="sourceLineNo">882</span> ReportRegionStateTransitionResponse.newBuilder();<a name="line.882"></a>
+<span class="sourceLineNo">883</span> ServerName serverName = ProtobufUtil.toServerName(req.getServer());<a name="line.883"></a>
+<span class="sourceLineNo">884</span> ServerStateNode serverNode = regionStates.getOrCreateServer(serverName);<a name="line.884"></a>
+<span class="sourceLineNo">885</span> // here we have to acquire a read lock instead of a simple exclusive lock. This is because that<a name="line.885"></a>
+<span class="sourceLineNo">886</span> // we should not block other reportRegionStateTransition call from the same region server. This<a name="line.886"></a>
+<span class="sourceLineNo">887</span> // is not only about performance, but also to prevent dead lock. Think of the meta region is<a name="line.887"></a>
+<span class="sourceLineNo">888</span> // also on the same region server and you hold the lock which blocks the<a name="line.888"></a>
+<span class="sourceLineNo">889</span> // reportRegionStateTransition for meta, and since meta is not online, you will block inside the<a name="line.889"></a>
+<span class="sourceLineNo">890</span> // lock protection to wait for meta online...<a name="line.890"></a>
+<span class="sourceLineNo">891</span> serverNode.readLock().lock();<a name="line.891"></a>
+<span class="sourceLineNo">892</span> try {<a name="line.892"></a>
+<span class="sourceLineNo">893</span> // we only accept reportRegionStateTransition if the region server is online, see the comment<a name="line.893"></a>
+<span class="sourceLineNo">894</span> // above in submitServerCrash method and HBASE-21508 for more details.<a name="line.894"></a>
+<span class="sourceLineNo">895</span> if (serverNode.isInState(ServerState.ONLINE)) {<a name="line.895"></a>
+<span class="sourceLineNo">896</span> try {<a name="line.896"></a>
+<span class="sourceLineNo">897</span> reportRegionStateTransition(builder, serverName, req.getTransitionList());<a name="line.897"></a>
+<span class="sourceLineNo">898</span> } catch (PleaseHoldException e) {<a name="line.898"></a>
+<span class="sourceLineNo">899</span> LOG.trace("Failed transition ", e);<a name="line.899"></a>
+<span class="sourceLineNo">900</span> throw e;<a name="line.900"></a>
+<span class="sourceLineNo">901</span> } catch (UnsupportedOperationException | IOException e) {<a name="line.901"></a>
+<span class="sourceLineNo">902</span> // TODO: at the moment we have a single error message and the RS will abort<a name="line.902"></a>
+<span class="sourceLineNo">903</span> // if the master says that one of the region transitions failed.<a name="line.903"></a>
+<span class="sourceLineNo">904</span> LOG.warn("Failed transition", e);<a name="line.904"></a>
+<span class="sourceLineNo">905</span> builder.setErrorMessage("Failed transition " + e.getMessage());<a name="line.905"></a>
+<span class="sourceLineNo">906</span> }<a name="line.906"></a>
+<span class="sourceLineNo">907</span> } else {<a name="line.907"></a>
+<span class="sourceLineNo">908</span> LOG.warn("The region server {} is already dead, skip reportRegionStateTransition call",<a name="line.908"></a>
+<span class="sourceLineNo">909</span> serverName);<a name="line.909"></a>
+<span class="sourceLineNo">910</span> builder.setErrorMessage("You are dead");<a name="line.910"></a>
+<span class="sourceLineNo">911</span> }<a name="line.911"></a>
+<span class="sourceLineNo">912</span> } finally {<a name="line.912"></a>
+<span class="sourceLineNo">913</span> serverNode.readLock().unlock();<a name="line.913"></a>
+<span class="sourceLineNo">914</span> }<a name="line.914"></a>
+<span class="sourceLineNo">915</span><a name="line.915"></a>
+<span class="sourceLineNo">916</span> return builder.build();<a name="line.916"></a>
+<span class="sourceLineNo">917</span> }<a name="line.917"></a>
+<span class="sourceLineNo">918</span><a name="line.918"></a>
+<span class="sourceLineNo">919</span> private void updateRegionTransition(ServerName serverName, TransitionCode state,<a name="line.919"></a>
+<span class="sourceLineNo">920</span> RegionInfo regionInfo, long seqId, long procId) throws IOException {<a name="line.920"></a>
+<span class="sourceLineNo">921</span> checkMetaLoaded(regionInfo);<a name="line.921"></a>
+<span class="sourceLineNo">922</span><a name="line.922"></a>
+<span class="sourceLineNo">923</span> RegionStateNode regionNode = regionStates.getRegionStateNode(regionInfo);<a name="line.923"></a>
+<span class="sourceLineNo">924</span> if (regionNode == null) {<a name="line.924"></a>
+<span class="sourceLineNo">925</span> // the table/region is gone. maybe a delete, split, merge<a name="line.925"></a>
+<span class="sourceLineNo">926</span> throw new UnexpectedStateException(String.format(<a name="line.926"></a>
+<span class="sourceLineNo">927</span> "Server %s was trying to transition region %s to %s. but the region was removed.",<a name="line.927"></a>
+<span class="sourceLineNo">928</span> serverName, regionInfo, state));<a name="line.928"></a>
+<span class="sourceLineNo">929</span> }<a name="line.929"></a>
+<span class="sourceLineNo">930</span> LOG.trace("Update region transition serverName={} region={} regionState={}", serverName,<a name="line.930"></a>
+<span class="sourceLineNo">931</span> regionNode, state);<a name="line.931"></a>
+<span class="sourceLineNo">932</span><a name="line.932"></a>
+<span class="sourceLineNo">933</span> ServerStateNode serverNode = regionStates.getOrCreateServer(serverName);<a name="line.933"></a>
+<span class="sourceLineNo">934</span> regionNode.lock();<a name="line.934"></a>
+<span class="sourceLineNo">935</span> try {<a name="line.935"></a>
+<span class="sourceLineNo">936</span> if (!reportTransition(regionNode, serverNode, state, seqId, procId)) {<a name="line.936"></a>
+<span class="sourceLineNo">937</span> // Don't log WARN if shutting down cluster; during shutdown. Avoid the below messages:<a name="line.937"></a>
+<span class="sourceLineNo">938</span> // 2018-08-13 10:45:10,551 WARN ...AssignmentManager: No matching procedure found for<a name="line.938"></a>
+<span class="sourceLineNo">939</span> // rit=OPEN, location=ve0538.halxg.cloudera.com,16020,1533493000958,<a name="line.939"></a>
+<span class="sourceLineNo">940</span> // table=IntegrationTestBigLinkedList, region=65ab289e2fc1530df65f6c3d7cde7aa5 transition<a name="line.940"></a>
+<span class="sourceLineNo">941</span> // to CLOSED<a name="line.941"></a>
+<span class="sourceLineNo">942</span> // These happen because on cluster shutdown, we currently let the RegionServers close<a name="line.942"></a>
+<span class="sourceLineNo">943</span> // regions. This is the only time that region close is not run by the Master (so cluster<a name="line.943"></a>
+<span class="sourceLineNo">944</span> // goes down fast). Consider changing it so Master runs all shutdowns.<a name="line.944"></a>
+<span class="sourceLineNo">945</span> if (this.master.getServerManager().isClusterShutdown() &&<a name="line.945"></a>
+<span class="sourceLineNo">946</span> state.equals(TransitionCode.CLOSED)) {<a name="line.946"></a>
+<span class="sourceLineNo">947</span> LOG.info("RegionServer {} {}", state, regionNode.getRegionInfo().getEncodedName());<a name="line.947"></a>
+<span class="sourceLineNo">948</span> } else {<a name="line.948"></a>
+<span class="sourceLineNo">949</span> LOG.warn("No matching procedure found for {} transition to {}", regionNode, state);<a name="line.949"></a>
+<span class="sourceLineNo">950</span> }<a name="line.950"></a>
+<span class="sourceLineNo">951</span> }<a name="line.951"></a>
+<span class="sourceLineNo">952</span> } finally {<a name="line.952"></a>
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+<span class="sourceLineNo">954</span> }<a name="line.954"></a>
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+<span class="sourceLineNo">984</span> " hriA=" + hriA + " hriB=" + hriB);<a name="line.984"></a>
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+<span class="sourceLineNo">1028</span> // ============================================================================================<a name="line.1028"></a>
+<span class="sourceLineNo">1029</span> /**<a name="line.1029"></a>
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+<span class="sourceLineNo">1079</span> LOG.warn("No region state node for {}, it should already be on {}",<a name="line.1079"></a>
+<span class="sourceLineNo">1080</span> Bytes.toStringBinary(regionName), serverName);<a name="line.1080"></a>
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+<span class="sourceLineNo">1097</span> // elapsed time so less false alarms.<a name="line.1097"></a>
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+<span class="sourceLineNo">1100</span> regionNode, serverName, diff);<a name="line.1100"></a>
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+<span class="sourceLineNo">1102</span> }<a name="line.1102"></a>
+<span class="sourceLineNo">1103</span> } finally {<a name="line.1103"></a>
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+<span class="sourceLineNo">1107</span> }<a name="line.1107"></a>
+<span class="sourceLineNo">1108</span><a name="line.1108"></a>
+<span class="sourceLineNo">1109</span> // ============================================================================================<a name="line.1109"></a>
+<span class="sourceLineNo">1110</span> // RIT chore<a name="line.1110"></a>
+<span class="sourceLineNo">1111</span> // ============================================================================================<a name="line.1111"></a>
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+<span class="sourceLineNo">1116</span><a name="line.1116"></a>
+<span class="sourceLineNo">1117</span> @Override<a name="line.1117"></a>
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+<span class="sourceLineNo">1121</span> final RegionInTransitionStat ritStat = am.computeRegionInTransitionStat();<a name="line.1121"></a>
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+<span class="sourceLineNo">1127</span><a name="line.1127"></a>
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+<span class="sourceLineNo">1147</span><a name="line.1147"></a>
+<span class="sourceLineNo">1148</span> @VisibleForTesting<a name="line.1148"></a>
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+<span class="sourceLineNo">1241</span> //if (regionNode.isStuck()) {<a name="line.1241"></a>
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+<span class="sourceLineNo">1245</span> // ============================================================================================<a name="line.1245"></a>
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+<span class="sourceLineNo">1247</span> // ============================================================================================<a name="line.1247"></a>
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+<span class="sourceLineNo">1263</span><a name="line.1263"></a>
+<span class="sourceLineNo">1264</span> // Start the RIT chore<a name="line.1264"></a>
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+<span class="sourceLineNo">1268</span> LOG.info("Joined the cluster in {}", StringUtils.humanTimeDiff(costMs));<a name="line.1268"></a>
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+<span class="sourceLineNo">1270</span><a name="line.1270"></a>
+<span class="sourceLineNo">1271</span> /**<a name="line.1271"></a>
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+<span class="sourceLineNo">1284</span> .filter(RegionState::isOffline).filter(s -> isTableEnabled(s.getRegion().getTable()))<a name="line.1284"></a>
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+<span class="sourceLineNo">1300</span> // This is a row with nothing in it.<a name="line.1300"></a>
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<span class="sourceLineNo">1311</span> localState = State.OFFLINE;<a name="line.1311"></a>
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+<span class="sourceLineNo">1394</span> LOG.info(<a name="line.1394"></a>
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+<span class="sourceLineNo">1396</span> serverName, carryingMeta, pid);<a name="line.1396"></a>
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+<span class="sourceLineNo">1422</span> // TODO: UTILS/HELPERS?<a name="line.1422"></a>
+<span class="sourceLineNo">1423</span> // ============================================================================================<a name="line.1423"></a>
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+<span class="sourceLineNo">1444</span> // ============================================================================================<a name="line.1444"></a>
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+<span class="sourceLineNo">1476</span> State.CLOSING, // Retrying<a name="line.1476"></a>
+<span class="sourceLineNo">1477</span> State.SPLITTING, // Offline the split parent<a name="line.1477"></a>
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+<span class="sourceLineNo">1480</span><a name="line.1480"></a>
+<span class="sourceLineNo">1481</span> private static final State[] STATES_EXPECTED_ON_CLOSED = {<a name="line.1481"></a>
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+<span class="sourceLineNo">1487</span> // usages<a name="line.1487"></a>
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<span class="sourceLineNo">1493</span> // ============================================================================================<a name="line.1493"></a>
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diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.RegionInTransitionStat.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.RegionInTransitionStat.html
index f7cfdf8..f2f276f 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.RegionInTransitionStat.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/assignment/AssignmentManager.RegionInTransitionStat.html
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-<span class="sourceLineNo">328</span> * <p/><a name="line.328"></a>
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-<span class="sourceLineNo">353</span> // ============================================================================================<a name="line.353"></a>
-<span class="sourceLineNo">354</span> // Table State Manager helpers<a name="line.354"></a>
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-<span class="sourceLineNo">407</span> // TODO: handle multiple meta.<a name="line.407"></a>
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-<span class="sourceLineNo">414</span> // ============================================================================================<a name="line.414"></a>
-<span class="sourceLineNo">415</span> // META Event(s) helpers<a name="line.415"></a>
-<span class="sourceLineNo">416</span> // ============================================================================================<a name="line.416"></a>
-<span class="sourceLineNo">417</span> /**<a name="line.417"></a>
-<span class="sourceLineNo">418</span> * Notice that, this only means the meta region is available on a RS, but the AM may still be<a name="line.418"></a>
-<span class="sourceLineNo">419</span> * loading the region states from meta, so usually you need to check {@link #isMetaLoaded()} first<a name="line.419"></a>
-<span class="sourceLineNo">420</span> * before checking this method, unless you can make sure that your piece of code can only be<a name="line.420"></a>
-<span class="sourceLineNo">421</span> * executed after AM builds the region states.<a name="line.421"></a>
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-<span class="sourceLineNo">431</span><a name="line.431"></a>
-<span class="sourceLineNo">432</span> /**<a name="line.432"></a>
-<span class="sourceLineNo">433</span> * Notice that this event does not mean the AM has already finished region state rebuilding. See<a name="line.433"></a>
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-<span class="sourceLineNo">435</span> * @see #isMetaAssigned()<a name="line.435"></a>
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-<span class="sourceLineNo">480</span><a name="line.480"></a>
-<span class="sourceLineNo">481</span> /**<a name="line.481"></a>
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-<span class="sourceLineNo">485</span> * some incompatible changes.<a name="line.485"></a>
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-<span class="sourceLineNo">490</span> // it should 'move' the system tables from the old server to the new server but<a name="line.490"></a>
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-<span class="sourceLineNo">638</span> // ============================================================================================<a name="line.638"></a>
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-<span class="sourceLineNo">931</span><a name="line.931"></a>
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-<span class="sourceLineNo">936</span> // Don't log WARN if shutting down cluster; during shutdown. Avoid the below messages:<a name="line.936"></a>
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-<span class="sourceLineNo">938</span> // rit=OPEN, location=ve0538.halxg.cloudera.com,16020,1533493000958,<a name="line.938"></a>
-<span class="sourceLineNo">939</span> // table=IntegrationTestBigLinkedList, region=65ab289e2fc1530df65f6c3d7cde7aa5 transition<a name="line.939"></a>
-<span class="sourceLineNo">940</span> // to CLOSED<a name="line.940"></a>
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+<span class="sourceLineNo">271</span> // Remove the RIT chore<a name="line.271"></a>
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+<span class="sourceLineNo">275</span><a name="line.275"></a>
+<span class="sourceLineNo">276</span> // Stop the Assignment Thread<a name="line.276"></a>
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+<span class="sourceLineNo">278</span><a name="line.278"></a>
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+<span class="sourceLineNo">282</span> // Update meta events (for testing)<a name="line.282"></a>
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+<span class="sourceLineNo">288</span> }<a name="line.288"></a>
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+<span class="sourceLineNo">302</span><a name="line.302"></a>
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+<span class="sourceLineNo">306</span><a name="line.306"></a>
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+<span class="sourceLineNo">314</span><a name="line.314"></a>
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+<span class="sourceLineNo">318</span><a name="line.318"></a>
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+<span class="sourceLineNo">326</span><a name="line.326"></a>
+<span class="sourceLineNo">327</span> /**<a name="line.327"></a>
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+<span class="sourceLineNo">329</span> * <p/><a name="line.329"></a>
+<span class="sourceLineNo">330</span> * Notice that, for SCP, after we submit the SCP, no one can change the region list for the<a name="line.330"></a>
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+<span class="sourceLineNo">335</span> */<a name="line.335"></a>
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+<span class="sourceLineNo">343</span><a name="line.343"></a>
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+<span class="sourceLineNo">347</span><a name="line.347"></a>
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+<span class="sourceLineNo">351</span> : ServerName.EMPTY_SERVER_LIST;<a name="line.351"></a>
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+<span class="sourceLineNo">353</span><a name="line.353"></a>
+<span class="sourceLineNo">354</span> // ============================================================================================<a name="line.354"></a>
+<span class="sourceLineNo">355</span> // Table State Manager helpers<a name="line.355"></a>
+<span class="sourceLineNo">356</span> // ============================================================================================<a name="line.356"></a>
+<span class="sourceLineNo">357</span> TableStateManager getTableStateManager() {<a name="line.357"></a>
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+<span class="sourceLineNo">360</span><a name="line.360"></a>
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+<span class="sourceLineNo">364</span><a name="line.364"></a>
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+<span class="sourceLineNo">367</span> TableState.State.DISABLED, TableState.State.DISABLING);<a name="line.367"></a>
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+<span class="sourceLineNo">369</span><a name="line.369"></a>
+<span class="sourceLineNo">370</span> // ============================================================================================<a name="line.370"></a>
+<span class="sourceLineNo">371</span> // META Helpers<a name="line.371"></a>
+<span class="sourceLineNo">372</span> // ============================================================================================<a name="line.372"></a>
+<span class="sourceLineNo">373</span> private boolean isMetaRegion(final RegionInfo regionInfo) {<a name="line.373"></a>
+<span class="sourceLineNo">374</span> return regionInfo.isMetaRegion();<a name="line.374"></a>
+<span class="sourceLineNo">375</span> }<a name="line.375"></a>
+<span class="sourceLineNo">376</span><a name="line.376"></a>
+<span class="sourceLineNo">377</span> public boolean isMetaRegion(final byte[] regionName) {<a name="line.377"></a>
+<span class="sourceLineNo">378</span> return getMetaRegionFromName(regionName) != null;<a name="line.378"></a>
+<span class="sourceLineNo">379</span> }<a name="line.379"></a>
+<span class="sourceLineNo">380</span><a name="line.380"></a>
+<span class="sourceLineNo">381</span> public RegionInfo getMetaRegionFromName(final byte[] regionName) {<a name="line.381"></a>
+<span class="sourceLineNo">382</span> for (RegionInfo hri: getMetaRegionSet()) {<a name="line.382"></a>
+<span class="sourceLineNo">383</span> if (Bytes.equals(hri.getRegionName(), regionName)) {<a name="line.383"></a>
+<span class="sourceLineNo">384</span> return hri;<a name="line.384"></a>
+<span class="sourceLineNo">385</span> }<a name="line.385"></a>
+<span class="sourceLineNo">386</span> }<a name="line.386"></a>
+<span class="sourceLineNo">387</span> return null;<a name="line.387"></a>
+<span class="sourceLineNo">388</span> }<a name="line.388"></a>
+<span class="sourceLineNo">389</span><a name="line.389"></a>
+<span class="sourceLineNo">390</span> public boolean isCarryingMeta(final ServerName serverName) {<a name="line.390"></a>
+<span class="sourceLineNo">391</span> // TODO: handle multiple meta<a name="line.391"></a>
+<span class="sourceLineNo">392</span> return isCarryingRegion(serverName, RegionInfoBuilder.FIRST_META_REGIONINFO);<a name="line.392"></a>
+<span class="sourceLineNo">393</span> }<a name="line.393"></a>
+<span class="sourceLineNo">394</span><a name="line.394"></a>
+<span class="sourceLineNo">395</span> private boolean isCarryingRegion(final ServerName serverName, final RegionInfo regionInfo) {<a name="line.395"></a>
+<span class="sourceLineNo">396</span> // TODO: check for state?<a name="line.396"></a>
+<span class="sourceLineNo">397</span> final RegionStateNode node = regionStates.getRegionStateNode(regionInfo);<a name="line.397"></a>
+<span class="sourceLineNo">398</span> return(node != null && serverName.equals(node.getRegionLocation()));<a name="line.398"></a>
+<span class="sourceLineNo">399</span> }<a name="line.399"></a>
+<span class="sourceLineNo">400</span><a name="line.400"></a>
+<span class="sourceLineNo">401</span> private RegionInfo getMetaForRegion(final RegionInfo regionInfo) {<a name="line.401"></a>
+<span class="sourceLineNo">402</span> //if (regionInfo.isMetaRegion()) return regionInfo;<a name="line.402"></a>
+<span class="sourceLineNo">403</span> // TODO: handle multiple meta. if the region provided is not meta lookup<a name="line.403"></a>
+<span class="sourceLineNo">404</span> // which meta the region belongs to.<a name="line.404"></a>
+<span class="sourceLineNo">405</span> return RegionInfoBuilder.FIRST_META_REGIONINFO;<a name="line.405"></a>
+<span class="sourceLineNo">406</span> }<a name="line.406"></a>
+<span class="sourceLineNo">407</span><a name="line.407"></a>
+<span class="sourceLineNo">408</span> // TODO: handle multiple meta.<a name="line.408"></a>
+<span class="sourceLineNo">409</span> private static final Set<RegionInfo> META_REGION_SET =<a name="line.409"></a>
+<span class="sourceLineNo">410</span> Collections.singleton(RegionInfoBuilder.FIRST_META_REGIONINFO);<a name="line.410"></a>
+<span class="sourceLineNo">411</span> public Set<RegionInfo> getMetaRegionSet() {<a name="line.411"></a>
+<span class="sourceLineNo">412</span> return META_REGION_SET;<a name="line.412"></a>
+<span class="sourceLineNo">413</span> }<a name="line.413"></a>
+<span class="sourceLineNo">414</span><a name="line.414"></a>
+<span class="sourceLineNo">415</span> // ============================================================================================<a name="line.415"></a>
+<span class="sourceLineNo">416</span> // META Event(s) helpers<a name="line.416"></a>
+<span class="sourceLineNo">417</span> // ============================================================================================<a name="line.417"></a>
+<span class="sourceLineNo">418</span> /**<a name="line.418"></a>
+<span class="sourceLineNo">419</span> * Notice that, this only means the meta region is available on a RS, but the AM may still be<a name="line.419"></a>
+<span class="sourceLineNo">420</span> * loading the region states from meta, so usually you need to check {@link #isMetaLoaded()} first<a name="line.420"></a>
+<span class="sourceLineNo">421</span> * before checking this method, unless you can make sure that your piece of code can only be<a name="line.421"></a>
+<span class="sourceLineNo">422</span> * executed after AM builds the region states.<a name="line.422"></a>
+<span class="sourceLineNo">423</span> * @see #isMetaLoaded()<a name="line.423"></a>
+<span class="sourceLineNo">424</span> */<a name="line.424"></a>
+<span class="sourceLineNo">425</span> public boolean isMetaAssigned() {<a name="line.425"></a>
+<span class="sourceLineNo">426</span> return metaAssignEvent.isReady();<a name="line.426"></a>
+<span class="sourceLineNo">427</span> }<a name="line.427"></a>
+<span class="sourceLineNo">428</span><a name="line.428"></a>
+<span class="sourceLineNo">429</span> public boolean isMetaRegionInTransition() {<a name="line.429"></a>
+<span class="sourceLineNo">430</span> return !isMetaAssigned();<a name="line.430"></a>
+<span class="sourceLineNo">431</span> }<a name="line.431"></a>
+<span class="sourceLineNo">432</span><a name="line.432"></a>
+<span class="sourceLineNo">433</span> /**<a name="line.433"></a>
+<span class="sourceLineNo">434</span> * Notice that this event does not mean the AM has already finished region state rebuilding. See<a name="line.434"></a>
+<span class="sourceLineNo">435</span> * the comment of {@link #isMetaAssigned()} for more details.<a name="line.435"></a>
+<span class="sourceLineNo">436</span> * @see #isMetaAssigned()<a name="line.436"></a>
+<span class="sourceLineNo">437</span> */<a name="line.437"></a>
+<span class="sourceLineNo">438</span> public boolean waitMetaAssigned(Procedure<?> proc, RegionInfo regionInfo) {<a name="line.438"></a>
+<span class="sourceLineNo">439</span> return getMetaAssignEvent(getMetaForRegion(regionInfo)).suspendIfNotReady(proc);<a name="line.439"></a>
+<span class="sourceLineNo">440</span> }<a name="line.440"></a>
+<span class="sourceLineNo">441</span><a name="line.441"></a>
+<span class="sourceLineNo">442</span> private void setMetaAssigned(RegionInfo metaRegionInfo, boolean assigned) {<a name="line.442"></a>
+<span class="sourceLineNo">443</span> assert isMetaRegion(metaRegionInfo) : "unexpected non-meta region " + metaRegionInfo;<a name="line.443"></a>
+<span class="sourceLineNo">444</span> ProcedureEvent<?> metaAssignEvent = getMetaAssignEvent(metaRegionInfo);<a name="line.444"></a>
+<span class="sourceLineNo">445</span> if (assigned) {<a name="line.445"></a>
+<span class="sourceLineNo">446</span> metaAssignEvent.wake(getProcedureScheduler());<a name="line.446"></a>
+<span class="sourceLineNo">447</span> } else {<a name="line.447"></a>
+<span class="sourceLineNo">448</span> metaAssignEvent.suspend();<a name="line.448"></a>
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+<span class="sourceLineNo">450</span> }<a name="line.450"></a>
+<span class="sourceLineNo">451</span><a name="line.451"></a>
+<span class="sourceLineNo">452</span> private ProcedureEvent<?> getMetaAssignEvent(RegionInfo metaRegionInfo) {<a name="line.452"></a>
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+<span class="sourceLineNo">454</span> // TODO: handle multiple meta.<a name="line.454"></a>
+<span class="sourceLineNo">455</span> return metaAssignEvent;<a name="line.455"></a>
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+<span class="sourceLineNo">457</span><a name="line.457"></a>
+<span class="sourceLineNo">458</span> /**<a name="line.458"></a>
+<span class="sourceLineNo">459</span> * Wait until AM finishes the meta loading, i.e, the region states rebuilding.<a name="line.459"></a>
+<span class="sourceLineNo">460</span> * @see #isMetaLoaded()<a name="line.460"></a>
+<span class="sourceLineNo">461</span> * @see #waitMetaAssigned(Procedure, RegionInfo)<a name="line.461"></a>
+<span class="sourceLineNo">462</span> */<a name="line.462"></a>
+<span class="sourceLineNo">463</span> public boolean waitMetaLoaded(Procedure<?> proc) {<a name="line.463"></a>
+<span class="sourceLineNo">464</span> return metaLoadEvent.suspendIfNotReady(proc);<a name="line.464"></a>
+<span class="sourceLineNo">465</span> }<a name="line.465"></a>
+<span class="sourceLineNo">466</span><a name="line.466"></a>
+<span class="sourceLineNo">467</span> @VisibleForTesting<a name="line.467"></a>
+<span class="sourceLineNo">468</span> void wakeMetaLoadedEvent() {<a name="line.468"></a>
+<span class="sourceLineNo">469</span> metaLoadEvent.wake(getProcedureScheduler());<a name="line.469"></a>
+<span class="sourceLineNo">470</span> assert isMetaLoaded() : "expected meta to be loaded";<a name="line.470"></a>
+<span class="sourceLineNo">471</span> }<a name="line.471"></a>
+<span class="sourceLineNo">472</span><a name="line.472"></a>
+<span class="sourceLineNo">473</span> /**<a name="line.473"></a>
+<span class="sourceLineNo">474</span> * Return whether AM finishes the meta loading, i.e, the region states rebuilding.<a name="line.474"></a>
+<span class="sourceLineNo">475</span> * @see #isMetaAssigned()<a name="line.475"></a>
+<span class="sourceLineNo">476</span> * @see #waitMetaLoaded(Procedure)<a name="line.476"></a>
+<span class="sourceLineNo">477</span> */<a name="line.477"></a>
+<span class="sourceLineNo">478</span> public boolean isMetaLoaded() {<a name="line.478"></a>
+<span class="sourceLineNo">479</span> return metaLoadEvent.isReady();<a name="line.479"></a>
+<span class="sourceLineNo">480</span> }<a name="line.480"></a>
+<span class="sourceLineNo">481</span><a name="line.481"></a>
+<span class="sourceLineNo">482</span> /**<a name="line.482"></a>
+<span class="sourceLineNo">483</span> * Start a new thread to check if there are region servers whose versions are higher than others.<a name="line.483"></a>
+<span class="sourceLineNo">484</span> * If so, move all system table regions to RS with the highest version to keep compatibility.<a name="line.484"></a>
+<span class="sourceLineNo">485</span> * The reason is, RS in new version may not be able to access RS in old version when there are<a name="line.485"></a>
+<span class="sourceLineNo">486</span> * some incompatible changes.<a name="line.486"></a>
+<span class="sourceLineNo">487</span> * <p>This method is called when a new RegionServer is added to cluster only.</p><a name="line.487"></a>
+<span class="sourceLineNo">488</span> */<a name="line.488"></a>
+<span class="sourceLineNo">489</span> public void checkIfShouldMoveSystemRegionAsync() {<a name="line.489"></a>
+<span class="sourceLineNo">490</span> // TODO: Fix this thread. If a server is killed and a new one started, this thread thinks that<a name="line.490"></a>
+<span class="sourceLineNo">491</span> // it should 'move' the system tables from the old server to the new server but<a name="line.491"></a>
+<span class="sourceLineNo">492</span> // ServerCrashProcedure is on it; and it will take care of the assign without dataloss.<a name="line.492"></a>
+<span class="sourceLineNo">493</span> if (this.master.getServerManager().countOfRegionServers() <= 1) {<a name="line.493"></a>
+<span class="sourceLineNo">494</span> return;<a name="line.494"></a>
+<span class="sourceLineNo">495</span> }<a name="line.495"></a>
+<span class="sourceLineNo">496</span> // This thread used to run whenever there was a change in the cluster. The ZooKeeper<a name="line.496"></a>
+<span class="sourceLineNo">497</span> // childrenChanged notification came in before the nodeDeleted message and so this method<a name="line.497"></a>
+<span class="sourceLineNo">498</span> // cold run before a ServerCrashProcedure could run. That meant that this thread could see<a name="line.498"></a>
+<span class="sourceLineNo">499</span> // a Crashed Server before ServerCrashProcedure and it could find system regions on the<a name="line.499"></a>
+<span class="sourceLineNo">500</span> // crashed server and go move them before ServerCrashProcedure had a chance; could be<a name="line.500"></a>
+<span class="sourceLineNo">501</span> // dataloss too if WALs were not recovered.<a name="line.501"></a>
+<span class="sourceLineNo">502</span> new Thread(() -> {<a name="line.502"></a>
+<span class="sourceLineNo">503</span> try {<a name="line.503"></a>
+<span class="sourceLineNo">504</span> synchronized (checkIfShouldMoveSystemRegionLock) {<a name="line.504"></a>
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+<span class="sourceLineNo">506</span> // TODO: I don't think this code does a good job if all servers in cluster have same<a name="line.506"></a>
+<span class="sourceLineNo">507</span> // version. It looks like it will schedule unnecessary moves.<a name="line.507"></a>
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+<span class="sourceLineNo">510</span> // TODO: See HBASE-18494 and HBASE-18495. Though getExcludedServersForSystemTable()<a name="line.510"></a>
+<span class="sourceLineNo">511</span> // considers only online servers, the server could be queued for dead server<a name="line.511"></a>
+<span class="sourceLineNo">512</span> // processing. As region assignments for crashed server is handled by<a name="line.512"></a>
+<span class="sourceLineNo">513</span> // ServerCrashProcedure, do NOT handle them here. The goal is to handle this through<a name="line.513"></a>
+<span class="sourceLineNo">514</span> // regular flow of LoadBalancer as a favored node and not to have this special<a name="line.514"></a>
+<span class="sourceLineNo">515</span> // handling.<a name="line.515"></a>
+<span class="sourceLineNo">516</span> continue;<a name="line.516"></a>
+<span class="sourceLineNo">517</span> }<a name="line.517"></a>
+<span class="sourceLineNo">518</span> List<RegionInfo> regionsShouldMove = getSystemTables(server);<a name="line.518"></a>
+<span class="sourceLineNo">519</span> if (!regionsShouldMove.isEmpty()) {<a name="line.519"></a>
+<span class="sourceLineNo">520</span> for (RegionInfo regionInfo : regionsShouldMove) {<a name="line.520"></a>
+<span class="sourceLineNo">521</span> // null value for dest forces destination server to be selected by balancer<a name="line.521"></a>
+<span class="sourceLineNo">522</span> RegionPlan plan = new RegionPlan(regionInfo, server, null);<a name="line.522"></a>
+<span class="sourceLineNo">523</span> if (regionInfo.isMetaRegion()) {<a name="line.523"></a>
+<span class="sourceLineNo">524</span> // Must move meta region first.<a name="line.524"></a>
+<span class="sourceLineNo">525</span> LOG.info("Async MOVE of {} to newer Server={}",<a name="line.525"></a>
+<span class="sourceLineNo">526</span> regionInfo.getEncodedName(), server);<a name="line.526"></a>
+<span class="sourceLineNo">527</span> moveAsync(plan);<a name="line.527"></a>
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+<span class="sourceLineNo">531</span> }<a name="line.531"></a>
+<span class="sourceLineNo">532</span> }<a name="line.532"></a>
+<span class="sourceLineNo">533</span> for (RegionPlan plan : plans) {<a name="line.533"></a>
+<span class="sourceLineNo">534</span> LOG.info("Async MOVE of {} to newer Server={}",<a name="line.534"></a>
+<span class="sourceLineNo">535</span> plan.getRegionInfo().getEncodedName(), server);<a name="line.535"></a>
+<span class="sourceLineNo">536</span> moveAsync(plan);<a name="line.536"></a>
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+<span class="sourceLineNo">538</span> }<a name="line.538"></a>
+<span class="sourceLineNo">539</span> }<a name="line.539"></a>
+<span class="sourceLineNo">540</span> } catch (Throwable t) {<a name="line.540"></a>
+<span class="sourceLineNo">541</span> LOG.error(t.toString(), t);<a name="line.541"></a>
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+<span class="sourceLineNo">543</span> }).start();<a name="line.543"></a>
+<span class="sourceLineNo">544</span> }<a name="line.544"></a>
+<span class="sourceLineNo">545</span><a name="line.545"></a>
+<span class="sourceLineNo">546</span> private List<RegionInfo> getSystemTables(ServerName serverName) {<a name="line.546"></a>
+<span class="sourceLineNo">547</span> ServerStateNode serverNode = regionStates.getServerNode(serverName);<a name="line.547"></a>
+<span class="sourceLineNo">548</span> if (serverNode == null) {<a name="line.548"></a>
+<span class="sourceLineNo">549</span> return Collections.emptyList();<a name="line.549"></a>
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+<span class="sourceLineNo">551</span> return serverNode.getSystemRegionInfoList();<a name="line.551"></a>
+<span class="sourceLineNo">552</span> }<a name="line.552"></a>
+<span class="sourceLineNo">553</span><a name="line.553"></a>
+<span class="sourceLineNo">554</span> private void preTransitCheck(RegionStateNode regionNode, RegionState.State[] expectedStates)<a name="line.554"></a>
+<span class="sourceLineNo">555</span> throws HBaseIOException {<a name="line.555"></a>
+<span class="sourceLineNo">556</span> if (regionNode.getProcedure() != null) {<a name="line.556"></a>
+<span class="sourceLineNo">557</span> throw new HBaseIOException(regionNode + " is currently in transition");<a name="line.557"></a>
+<span class="sourceLineNo">558</span> }<a name="line.558"></a>
+<span class="sourceLineNo">559</span> if (!regionNode.isInState(expectedStates)) {<a name="line.559"></a>
+<span class="sourceLineNo">560</span> throw new DoNotRetryRegionException("Unexpected state for " + regionNode);<a name="line.560"></a>
+<span class="sourceLineNo">561</span> }<a name="line.561"></a>
+<span class="sourceLineNo">562</span> if (getTableStateManager().isTableState(regionNode.getTable(), TableState.State.DISABLING,<a name="line.562"></a>
+<span class="sourceLineNo">563</span> TableState.State.DISABLED)) {<a name="line.563"></a>
+<span class="sourceLineNo">564</span> throw new DoNotRetryIOException(regionNode.getTable() + " is disabled for " + regionNode);<a name="line.564"></a>
+<span class="sourceLineNo">565</span> }<a name="line.565"></a>
+<span class="sourceLineNo">566</span> }<a name="line.566"></a>
+<span class="sourceLineNo">567</span><a name="line.567"></a>
+<span class="sourceLineNo">568</span> // TODO: Need an async version of this for hbck2.<a name="line.568"></a>
+<span class="sourceLineNo">569</span> public long assign(RegionInfo regionInfo, ServerName sn) throws IOException {<a name="line.569"></a>
+<span class="sourceLineNo">570</span> // TODO: should we use getRegionStateNode?<a name="line.570"></a>
+<span class="sourceLineNo">571</span> RegionStateNode regionNode = regionStates.getOrCreateRegionStateNode(regionInfo);<a name="line.571"></a>
+<span class="sourceLineNo">572</span> TransitRegionStateProcedure proc;<a name="line.572"></a>
+<span class="sourceLineNo">573</span> regionNode.lock();<a name="line.573"></a>
+<span class="sourceLineNo">574</span> try {<a name="line.574"></a>
+<span class="sourceLineNo">575</span> preTransitCheck(regionNode, STATES_EXPECTED_ON_ASSIGN);<a name="line.575"></a>
+<span class="sourceLineNo">576</span> proc = TransitRegionStateProcedure.assign(getProcedureEnvironment(), regionInfo, sn);<a name="line.576"></a>
+<span class="sourceLineNo">577</span> regionNode.setProcedure(proc);<a name="line.577"></a>
+<span class="sourceLineNo">578</span> } finally {<a name="line.578"></a>
+<span class="sourceLineNo">579</span> regionNode.unlock();<a name="line.579"></a>
+<span class="sourceLineNo">580</span> }<a name="line.580"></a>
+<span class="sourceLineNo">581</span> ProcedureSyncWait.submitAndWaitProcedure(master.getMasterProcedureExecutor(), proc);<a name="line.581"></a>
+<span class="sourceLineNo">582</span> return proc.getProcId();<a name="line.582"></a>
+<span class="sourceLineNo">583</span> }<a name="line.583"></a>
+<span class="sourceLineNo">584</span><a name="line.584"></a>
+<span class="sourceLineNo">585</span> public long assign(RegionInfo regionInfo) throws IOException {<a name="line.585"></a>
+<span class="sourceLineNo">586</span> return assign(regionInfo, null);<a name="line.586"></a>
+<span class="sourceLineNo">587</span> }<a name="line.587"></a>
+<span class="sourceLineNo">588</span><a name="line.588"></a>
+<span class="sourceLineNo">589</span> public long unassign(RegionInfo regionInfo) throws IOException {<a name="line.589"></a>
+<span class="sourceLineNo">590</span> RegionStateNode regionNode = regionStates.getRegionStateNode(regionInfo);<a name="line.590"></a>
+<span class="sourceLineNo">591</span> if (regionNode == null) {<a name="line.591"></a>
+<span class="sourceLineNo">592</span> throw new UnknownRegionException("No RegionState found for " + regionInfo.getEncodedName());<a name="line.592"></a>
+<span class="sourceLineNo">593</span> }<a name="line.593"></a>
+<span class="sourceLineNo">594</span> TransitRegionStateProcedure proc;<a name="line.594"></a>
+<span class="sourceLineNo">595</span> regionNode.lock();<a name="line.595"></a>
+<span class="sourceLineNo">596</span> try {<a name="line.596"></a>
+<span class="sourceLineNo">597</span> preTransitCheck(regionNode, STATES_EXPECTED_ON_UNASSIGN_OR_MOVE);<a name="line.597"></a>
+<span class="sourceLineNo">598</span> proc = TransitRegionStateProcedure.unassign(getProcedureEnvironment(), regionInfo);<a name="line.598"></a>
+<span class="sourceLineNo">599</span> regionNode.setProcedure(proc);<a name="line.599"></a>
+<span class="sourceLineNo">600</span> } finally {<a name="line.600"></a>
+<span class="sourceLineNo">601</span> regionNode.unlock();<a name="line.601"></a>
+<span class="sourceLineNo">602</span> }<a name="line.602"></a>
+<span class="sourceLineNo">603</span> ProcedureSyncWait.submitAndWaitProcedure(master.getMasterProcedureExecutor(), proc);<a name="line.603"></a>
+<span class="sourceLineNo">604</span> return proc.getProcId();<a name="line.604"></a>
+<span class="sourceLineNo">605</span> }<a name="line.605"></a>
+<span class="sourceLineNo">606</span><a name="line.606"></a>
+<span class="sourceLineNo">607</span> public TransitRegionStateProcedure createMoveRegionProcedure(RegionInfo regionInfo,<a name="line.607"></a>
+<span class="sourceLineNo">608</span> ServerName targetServer) throws HBaseIOException {<a name="line.608"></a>
+<span class="sourceLineNo">609</span> RegionStateNode regionNode = this.regionStates.getRegionStateNode(regionInfo);<a name="line.609"></a>
+<span class="sourceLineNo">610</span> if (regionNode == null) {<a name="line.610"></a>
+<span class="sourceLineNo">611</span> throw new UnknownRegionException("No RegionState found for " + regionInfo.getEncodedName());<a name="line.611"></a>
+<span class="sourceLineNo">612</span> }<a name="line.612"></a>
+<span class="sourceLineNo">613</span> TransitRegionStateProcedure proc;<a name="line.613"></a>
+<span class="sourceLineNo">614</span> regionNode.lock();<a name="line.614"></a>
+<span class="sourceLineNo">615</span> try {<a name="line.615"></a>
+<span class="sourceLineNo">616</span> preTransitCheck(regionNode, STATES_EXPECTED_ON_UNASSIGN_OR_MOVE);<a name="line.616"></a>
+<span class="sourceLineNo">617</span> regionNode.checkOnline();<a name="line.617"></a>
+<span class="sourceLineNo">618</span> proc = TransitRegionStateProcedure.move(getProcedureEnvironment(), regionInfo, targetServer);<a name="line.618"></a>
+<span class="sourceLineNo">619</span> regionNode.setProcedure(proc);<a name="line.619"></a>
+<span class="sourceLineNo">620</span> } finally {<a name="line.620"></a>
+<span class="sourceLineNo">621</span> regionNode.unlock();<a name="line.621"></a>
+<span class="sourceLineNo">622</span> }<a name="line.622"></a>
+<span class="sourceLineNo">623</span> return proc;<a name="line.623"></a>
+<span class="sourceLineNo">624</span> }<a name="line.624"></a>
+<span class="sourceLineNo">625</span><a name="line.625"></a>
+<span class="sourceLineNo">626</span> public void move(RegionInfo regionInfo) throws IOException {<a name="line.626"></a>
+<span class="sourceLineNo">627</span> TransitRegionStateProcedure proc = createMoveRegionProcedure(regionInfo, null);<a name="line.627"></a>
+<span class="sourceLineNo">628</span> ProcedureSyncWait.submitAndWaitProcedure(master.getMasterProcedureExecutor(), proc);<a name="line.628"></a>
+<span class="sourceLineNo">629</span> }<a name="line.629"></a>
+<span class="sourceLineNo">630</span><a name="line.630"></a>
+<span class="sourceLineNo">631</span> public Future<byte[]> moveAsync(RegionPlan regionPlan) throws HBaseIOException {<a name="line.631"></a>
+<span class="sourceLineNo">632</span> TransitRegionStateProcedure proc =<a name="line.632"></a>
+<span class="sourceLineNo">633</span> createMoveRegionProcedure(regionPlan.getRegionInfo(), regionPlan.getDestination());<a name="line.633"></a>
+<span class="sourceLineNo">634</span> return ProcedureSyncWait.submitProcedure(master.getMasterProcedureExecutor(), proc);<a name="line.634"></a>
+<span class="sourceLineNo">635</span> }<a name="line.635"></a>
+<span class="sourceLineNo">636</span><a name="line.636"></a>
+<span class="sourceLineNo">637</span> // ============================================================================================<a name="line.637"></a>
+<span class="sourceLineNo">638</span> // RegionTransition procedures helpers<a name="line.638"></a>
+<span class="sourceLineNo">639</span> // ============================================================================================<a name="line.639"></a>
+<span class="sourceLineNo">640</span><a name="line.640"></a>
+<span class="sourceLineNo">641</span> /**<a name="line.641"></a>
+<span class="sourceLineNo">642</span> * Create round-robin assigns. Use on table creation to distribute out regions across cluster.<a name="line.642"></a>
+<span class="sourceLineNo">643</span> * @return AssignProcedures made out of the passed in <code>hris</code> and a call to the balancer<a name="line.643"></a>
+<span class="sourceLineNo">644</span> * to populate the assigns with targets chosen using round-robin (default balancer<a name="line.644"></a>
+<span class="sourceLineNo">645</span> * scheme). If at assign-time, the target chosen is no longer up, thats fine, the<a name="line.645"></a>
+<span class="sourceLineNo">646</span> * AssignProcedure will ask the balancer for a new target, and so on.<a name="line.646"></a>
+<span class="sourceLineNo">647</span> */<a name="line.647"></a>
+<span class="sourceLineNo">648</span> public TransitRegionStateProcedure[] createRoundRobinAssignProcedures(List<RegionInfo> hris,<a name="line.648"></a>
+<span class="sourceLineNo">649</span> List<ServerName> serversToExclude) {<a name="line.649"></a>
+<span class="sourceLineNo">650</span> if (hris.isEmpty()) {<a name="line.650"></a>
+<span class="sourceLineNo">651</span> return new TransitRegionStateProcedure[0];<a name="line.651"></a>
+<span class="sourceLineNo">652</span> }<a name="line.652"></a>
+<span class="sourceLineNo">653</span><a name="line.653"></a>
+<span class="sourceLineNo">654</span> if (serversToExclude != null<a name="line.654"></a>
+<span class="sourceLineNo">655</span> && this.master.getServerManager().getOnlineServersList().size() == 1) {<a name="line.655"></a>
+<span class="sourceLineNo">656</span> LOG.debug("Only one region server found and hence going ahead with the assignment");<a name="line.656"></a>
+<span class="sourceLineNo">657</span> serversToExclude = null;<a name="line.657"></a>
+<span class="sourceLineNo">658</span> }<a name="line.658"></a>
+<span class="sourceLineNo">659</span> try {<a name="line.659"></a>
+<span class="sourceLineNo">660</span> // Ask the balancer to assign our regions. Pass the regions en masse. The balancer can do<a name="line.660"></a>
+<span class="sourceLineNo">661</span> // a better job if it has all the assignments in the one lump.<a name="line.661"></a>
+<span class="sourceLineNo">662</span> Map<ServerName, List<RegionInfo>> assignments = getBalancer().roundRobinAssignment(hris,<a name="line.662"></a>
+<span class="sourceLineNo">663</span> this.master.getServerManager().createDestinationServersList(serversToExclude));<a name="line.663"></a>
+<span class="sourceLineNo">664</span> // Return mid-method!<a name="line.664"></a>
+<span class="sourceLineNo">665</span> return createAssignProcedures(assignments);<a name="line.665"></a>
+<span class="sourceLineNo">666</span> } catch (HBaseIOException hioe) {<a name="line.666"></a>
+<span class="sourceLineNo">667</span> LOG.warn("Failed roundRobinAssignment", hioe);<a name="line.667"></a>
+<span class="sourceLineNo">668</span> }<a name="line.668"></a>
+<span class="sourceLineNo">669</span> // If an error above, fall-through to this simpler assign. Last resort.<a name="line.669"></a>
+<span class="sourceLineNo">670</span> return createAssignProcedures(hris);<a name="line.670"></a>
+<span class="sourceLineNo">671</span> }<a name="line.671"></a>
+<span class="sourceLineNo">672</span><a name="line.672"></a>
+<span class="sourceLineNo">673</span> /**<a name="line.673"></a>
+<span class="sourceLineNo">674</span> * Create round-robin assigns. Use on table creation to distribute out regions across cluster.<a name="line.674"></a>
+<span class="sourceLineNo">675</span> * @return AssignProcedures made out of the passed in <code>hris</code> and a call to the balancer<a name="line.675"></a>
+<span class="sourceLineNo">676</span> * to populate the assigns with targets chosen using round-robin (default balancer<a name="line.676"></a>
+<span class="sourceLineNo">677</span> * scheme). If at assign-time, the target chosen is no longer up, thats fine, the<a name="line.677"></a>
+<span class="sourceLineNo">678</span> * AssignProcedure will ask the balancer for a new target, and so on.<a name="line.678"></a>
+<span class="sourceLineNo">679</span> */<a name="line.679"></a>
+<span class="sourceLineNo">680</span> public TransitRegionStateProcedure[] createRoundRobinAssignProcedures(List<RegionInfo> hris) {<a name="line.680"></a>
+<span class="sourceLineNo">681</span> return createRoundRobinAssignProcedures(hris, null);<a name="line.681"></a>
+<span class="sourceLineNo">682</span> }<a name="line.682"></a>
+<span class="sourceLineNo">683</span><a name="line.683"></a>
+<span class="sourceLineNo">684</span> @VisibleForTesting<a name="line.684"></a>
+<span class="sourceLineNo">685</span> static int compare(TransitRegionStateProcedure left, TransitRegionStateProcedure right) {<a name="line.685"></a>
+<span class="sourceLineNo">686</span> if (left.getRegion().isMetaRegion()) {<a name="line.686"></a>
+<span class="sourceLineNo">687</span> if (right.getRegion().isMetaRegion()) {<a name="line.687"></a>
+<span class="sourceLineNo">688</span> return RegionInfo.COMPARATOR.compare(left.getRegion(), right.getRegion());<a name="line.688"></a>
+<span class="sourceLineNo">689</span> }<a name="line.689"></a>
+<span class="sourceLineNo">690</span> return -1;<a name="line.690"></a>
+<span class="sourceLineNo">691</span> } else if (right.getRegion().isMetaRegion()) {<a name="line.691"></a>
+<span class="sourceLineNo">692</span> return +1;<a name="line.692"></a>
+<span class="sourceLineNo">693</span> }<a name="line.693"></a>
+<span class="sourceLineNo">694</span> if (left.getRegion().getTable().isSystemTable()) {<a name="line.694"></a>
+<span class="sourceLineNo">695</span> if (right.getRegion().getTable().isSystemTable()) {<a name="line.695"></a>
+<span class="sourceLineNo">696</span> return RegionInfo.COMPARATOR.compare(left.getRegion(), right.getRegion());<a name="line.696"></a>
+<span class="sourceLineNo">697</span> }<a name="line.697"></a>
+<span class="sourceLineNo">698</span> return -1;<a name="line.698"></a>
+<span class="sourceLineNo">699</span> } else if (right.getRegion().getTable().isSystemTable()) {<a name="line.699"></a>
+<span class="sourceLineNo">700</span> return +1;<a name="line.700"></a>
+<span class="sourceLineNo">701</span> }<a name="line.701"></a>
+<span class="sourceLineNo">702</span> return RegionInfo.COMPARATOR.compare(left.getRegion(), right.getRegion());<a name="line.702"></a>
+<span class="sourceLineNo">703</span> }<a name="line.703"></a>
+<span class="sourceLineNo">704</span><a name="line.704"></a>
+<span class="sourceLineNo">705</span> private TransitRegionStateProcedure createAssignProcedure(RegionStateNode regionNode,<a name="line.705"></a>
+<span class="sourceLineNo">706</span> ServerName targetServer, boolean override) {<a name="line.706"></a>
+<span class="sourceLineNo">707</span> TransitRegionStateProcedure proc;<a name="line.707"></a>
+<span class="sourceLineNo">708</span> regionNode.lock();<a name="line.708"></a>
+<span class="sourceLineNo">709</span> try {<a name="line.709"></a>
+<span class="sourceLineNo">710</span> if(override && regionNode.getProcedure() != null) {<a name="line.710"></a>
+<span class="sourceLineNo">711</span> regionNode.unsetProcedure(regionNode.getProcedure());<a name="line.711"></a>
+<span class="sourceLineNo">712</span> }<a name="line.712"></a>
+<span class="sourceLineNo">713</span> assert regionNode.getProcedure() == null;<a name="line.713"></a>
+<span class="sourceLineNo">714</span> proc = TransitRegionStateProcedure.assign(getProcedureEnvironment(),<a name="line.714"></a>
+<span class="sourceLineNo">715</span> regionNode.getRegionInfo(), targetServer);<a name="line.715"></a>
+<span class="sourceLineNo">716</span> regionNode.setProcedure(proc);<a name="line.716"></a>
+<span class="sourceLineNo">717</span> } finally {<a name="line.717"></a>
+<span class="sourceLineNo">718</span> regionNode.unlock();<a name="line.718"></a>
+<span class="sourceLineNo">719</span> }<a name="line.719"></a>
+<span class="sourceLineNo">720</span> return proc;<a name="line.720"></a>
+<span class="sourceLineNo">721</span> }<a name="line.721"></a>
+<span class="sourceLineNo">722</span><a name="line.722"></a>
+<span class="sourceLineNo">723</span> private TransitRegionStateProcedure createUnassignProcedure(RegionStateNode regionNode,<a name="line.723"></a>
+<span class="sourceLineNo">724</span> boolean override) {<a name="line.724"></a>
+<span class="sourceLineNo">725</span> TransitRegionStateProcedure proc;<a name="line.725"></a>
+<span class="sourceLineNo">726</span> regionNode.lock();<a name="line.726"></a>
+<span class="sourceLineNo">727</span> try {<a name="line.727"></a>
+<span class="sourceLineNo">728</span> if(override && regionNode.getProcedure() != null) {<a name="line.728"></a>
+<span class="sourceLineNo">729</span> regionNode.unsetProcedure(regionNode.getProcedure());<a name="line.729"></a>
+<span class="sourceLineNo">730</span> }<a name="line.730"></a>
+<span class="sourceLineNo">731</span> assert regionNode.getProcedure() == null;<a name="line.731"></a>
+<span class="sourceLineNo">732</span> proc = TransitRegionStateProcedure.unassign(getProcedureEnvironment(),<a name="line.732"></a>
+<span class="sourceLineNo">733</span> regionNode.getRegionInfo());<a name="line.733"></a>
+<span class="sourceLineNo">734</span> regionNode.setProcedure(proc);<a name="line.734"></a>
+<span class="sourceLineNo">735</span> } finally {<a name="line.735"></a>
+<span class="sourceLineNo">736</span> regionNode.unlock();<a name="line.736"></a>
+<span class="sourceLineNo">737</span> }<a name="line.737"></a>
+<span class="sourceLineNo">738</span> return proc;<a name="line.738"></a>
+<span class="sourceLineNo">739</span> }<a name="line.739"></a>
+<span class="sourceLineNo">740</span><a name="line.740"></a>
+<span class="sourceLineNo">741</span> /**<a name="line.741"></a>
+<span class="sourceLineNo">742</span> * Create one TransitRegionStateProcedure to assign a region w/o specifying a target server.<a name="line.742"></a>
+<span class="sourceLineNo">743</span> * This method is specified for HBCK2<a name="line.743"></a>
+<span class="sourceLineNo">744</span> */<a name="line.744"></a>
+<span class="sourceLineNo">745</span> public TransitRegionStateProcedure createOneAssignProcedure(RegionInfo hri, boolean override) {<a name="line.745"></a>
+<span class="sourceLineNo">746</span> RegionStateNode regionNode = regionStates.getOrCreateRegionStateNode(hri);<a name="line.746"></a>
+<span class="sourceLineNo">747</span> return createAssignProcedure(regionNode, null, override);<a name="line.747"></a>
+<span class="sourceLineNo">748</span> }<a name="line.748"></a>
+<span class="sourceLineNo">749</span><a name="line.749"></a>
+<span class="sourceLineNo">750</span> /**<a name="line.750"></a>
+<span class="sourceLineNo">751</span> * Create one TransitRegionStateProcedure to unassign a region.<a name="line.751"></a>
+<span class="sourceLineNo">752</span> * This method is specified for HBCK2<a name="line.752"></a>
+<span class="sourceLineNo">753</span> */<a name="line.753"></a>
+<span class="sourceLineNo">754</span> public TransitRegionStateProcedure createOneUnassignProcedure(RegionInfo hri, boolean override) {<a name="line.754"></a>
+<span class="sourceLineNo">755</span> RegionStateNode regionNode = regionStates.getOrCreateRegionStateNode(hri);<a name="line.755"></a>
+<span class="sourceLineNo">756</span> return createUnassignProcedure(regionNode, override);<a name="line.756"></a>
+<span class="sourceLineNo">757</span> }<a name="line.757"></a>
+<span class="sourceLineNo">758</span><a name="line.758"></a>
+<span class="sourceLineNo">759</span> /**<a name="line.759"></a>
+<span class="sourceLineNo">760</span> * Create an array of TransitRegionStateProcedure w/o specifying a target server.<a name="line.760"></a>
+<span class="sourceLineNo">761</span> * <p/><a name="line.761"></a>
+<span class="sourceLineNo">762</span> * If no target server, at assign time, we will try to use the former location of the region if<a name="line.762"></a>
+<span class="sourceLineNo">763</span> * one exists. This is how we 'retain' the old location across a server restart.<a name="line.763"></a>
+<span class="sourceLineNo">764</span> * <p/><a name="line.764"></a>
+<span class="sourceLineNo">765</span> * Should only be called when you can make sure that no one can touch these regions other than<a name="line.765"></a>
+<span class="sourceLineNo">766</span> * you. For example, when you are creating table.<a name="line.766"></a>
+<span class="sourceLineNo">767</span> */<a name="line.767"></a>
+<span class="sourceLineNo">768</span> public TransitRegionStateProcedure[] createAssignProcedures(List<RegionInfo> hris) {<a name="line.768"></a>
+<span class="sourceLineNo">769</span> return hris.stream().map(hri -> regionStates.getOrCreateRegionStateNode(hri))<a name="line.769"></a>
+<span class="sourceLineNo">770</span> .map(regionNode -> createAssignProcedure(regionNode, null, false))<a name="line.770"></a>
+<span class="sourceLineNo">771</span> .sorted(AssignmentManager::compare).toArray(TransitRegionStateProcedure[]::new);<a name="line.771"></a>
+<span class="sourceLineNo">772</span> }<a name="line.772"></a>
+<span class="sourceLineNo">773</span><a name="line.773"></a>
+<span class="sourceLineNo">774</span> /**<a name="line.774"></a>
+<span class="sourceLineNo">775</span> * @param assignments Map of assignments from which we produce an array of AssignProcedures.<a name="line.775"></a>
+<span class="sourceLineNo">776</span> * @return Assignments made from the passed in <code>assignments</code><a name="line.776"></a>
+<span class="sourceLineNo">777</span> */<a name="line.777"></a>
+<span class="sourceLineNo">778</span> private TransitRegionStateProcedure[] createAssignProcedures(<a name="line.778"></a>
+<span class="sourceLineNo">779</span> Map<ServerName, List<RegionInfo>> assignments) {<a name="line.779"></a>
+<span class="sourceLineNo">780</span> return assignments.entrySet().stream()<a name="line.780"></a>
+<span class="sourceLineNo">781</span> .flatMap(e -> e.getValue().stream().map(hri -> regionStates.getOrCreateRegionStateNode(hri))<a name="line.781"></a>
+<span class="sourceLineNo">782</span> .map(regionNode -> createAssignProcedure(regionNode, e.getKey(), false)))<a name="line.782"></a>
+<span class="sourceLineNo">783</span> .sorted(AssignmentManager::compare).toArray(TransitRegionStateProcedure[]::new);<a name="line.783"></a>
+<span class="sourceLineNo">784</span> }<a name="line.784"></a>
+<span class="sourceLineNo">785</span><a name="line.785"></a>
+<span class="sourceLineNo">786</span> /**<a name="line.786"></a>
+<span class="sourceLineNo">787</span> * Called by DisableTableProcedure to unassign all the regions for a table.<a name="line.787"></a>
+<span class="sourceLineNo">788</span> */<a name="line.788"></a>
+<span class="sourceLineNo">789</span> public TransitRegionStateProcedure[] createUnassignProceduresForDisabling(TableName tableName) {<a name="line.789"></a>
+<span class="sourceLineNo">790</span> return regionStates.getTableRegionStateNodes(tableName).stream().map(regionNode -> {<a name="line.790"></a>
+<span class="sourceLineNo">791</span> regionNode.lock();<a name="line.791"></a>
+<span class="sourceLineNo">792</span> try {<a name="line.792"></a>
+<span class="sourceLineNo">793</span> if (!regionStates.include(regionNode, false) ||<a name="line.793"></a>
+<span class="sourceLineNo">794</span> regionStates.isRegionOffline(regionNode.getRegionInfo())) {<a name="line.794"></a>
+<span class="sourceLineNo">795</span> return null;<a name="line.795"></a>
+<span class="sourceLineNo">796</span> }<a name="line.796"></a>
+<span class="sourceLineNo">797</span> // As in DisableTableProcedure, we will hold the xlock for table, so we can make sure that<a name="line.797"></a>
+<span class="sourceLineNo">798</span> // this procedure has not been executed yet, as TRSP will hold the shared lock for table all<a name="line.798"></a>
+<span class="sourceLineNo">799</span> // the time. So here we will unset it and when it is actually executed, it will find that<a name="line.799"></a>
+<span class="sourceLineNo">800</span> // the attach procedure is not itself and quit immediately.<a name="line.800"></a>
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+<span class="sourceLineNo">802</span> regionNode.unsetProcedure(regionNode.getProcedure());<a name="line.802"></a>
+<span class="sourceLineNo">803</span> }<a name="line.803"></a>
+<span class="sourceLineNo">804</span> TransitRegionStateProcedure proc = TransitRegionStateProcedure<a name="line.804"></a>
+<span class="sourceLineNo">805</span> .unassign(getProcedureEnvironment(), regionNode.getRegionInfo());<a name="line.805"></a>
+<span class="sourceLineNo">806</span> regionNode.setProcedure(proc);<a name="line.806"></a>
+<span class="sourceLineNo">807</span> return proc;<a name="line.807"></a>
+<span class="sourceLineNo">808</span> } finally {<a name="line.808"></a>
+<span class="sourceLineNo">809</span> regionNode.unlock();<a name="line.809"></a>
+<span class="sourceLineNo">810</span> }<a name="line.810"></a>
+<span class="sourceLineNo">811</span> }).filter(p -> p != null).toArray(TransitRegionStateProcedure[]::new);<a name="line.811"></a>
+<span class="sourceLineNo">812</span> }<a name="line.812"></a>
+<span class="sourceLineNo">813</span><a name="line.813"></a>
+<span class="sourceLineNo">814</span> public SplitTableRegionProcedure createSplitProcedure(final RegionInfo regionToSplit,<a name="line.814"></a>
+<span class="sourceLineNo">815</span> final byte[] splitKey) throws IOException {<a name="line.815"></a>
+<span class="sourceLineNo">816</span> return new SplitTableRegionProcedure(getProcedureEnvironment(), regionToSplit, splitKey);<a name="line.816"></a>
+<span class="sourceLineNo">817</span> }<a name="line.817"></a>
+<span class="sourceLineNo">818</span><a name="line.818"></a>
+<span class="sourceLineNo">819</span> public MergeTableRegionsProcedure createMergeProcedure(final RegionInfo regionToMergeA,<a name="line.819"></a>
+<span class="sourceLineNo">820</span> final RegionInfo regionToMergeB) throws IOException {<a name="line.820"></a>
+<span class="sourceLineNo">821</span> return new MergeTableRegionsProcedure(getProcedureEnvironment(), regionToMergeA,regionToMergeB);<a name="line.821"></a>
+<span class="sourceLineNo">822</span> }<a name="line.822"></a>
+<span class="sourceLineNo">823</span><a name="line.823"></a>
+<span class="sourceLineNo">824</span> /**<a name="line.824"></a>
+<span class="sourceLineNo">825</span> * Delete the region states. This is called by "DeleteTable"<a name="line.825"></a>
+<span class="sourceLineNo">826</span> */<a name="line.826"></a>
+<span class="sourceLineNo">827</span> public void deleteTable(final TableName tableName) throws IOException {<a name="line.827"></a>
+<span class="sourceLineNo">828</span> final ArrayList<RegionInfo> regions = regionStates.getTableRegionsInfo(tableName);<a name="line.828"></a>
+<span class="sourceLineNo">829</span> regionStateStore.deleteRegions(regions);<a name="line.829"></a>
+<span class="sourceLineNo">830</span> for (int i = 0; i < regions.size(); ++i) {<a name="line.830"></a>
+<span class="sourceLineNo">831</span> final RegionInfo regionInfo = regions.get(i);<a name="line.831"></a>
+<span class="sourceLineNo">832</span> // we expect the region to be offline<a name="line.832"></a>
+<span class="sourceLineNo">833</span> regionStates.removeFromOfflineRegions(regionInfo);<a name="line.833"></a>
+<span class="sourceLineNo">834</span> regionStates.deleteRegion(regionInfo);<a name="line.834"></a>
+<span class="sourceLineNo">835</span> }<a name="line.835"></a>
+<span class="sourceLineNo">836</span> }<a name="line.836"></a>
+<span class="sourceLineNo">837</span><a name="line.837"></a>
+<span class="sourceLineNo">838</span> // ============================================================================================<a name="line.838"></a>
+<span class="sourceLineNo">839</span> // RS Region Transition Report helpers<a name="line.839"></a>
+<span class="sourceLineNo">840</span> // ============================================================================================<a name="line.840"></a>
+<span class="sourceLineNo">841</span> private void reportRegionStateTransition(ReportRegionStateTransitionResponse.Builder builder,<a name="line.841"></a>
+<span class="sourceLineNo">842</span> ServerName serverName, List<RegionStateTransition> transitionList) throws IOException {<a name="line.842"></a>
+<span class="sourceLineNo">843</span> for (RegionStateTransition transition : transitionList) {<a name="line.843"></a>
+<span class="sourceLineNo">844</span> switch (transition.getTransitionCode()) {<a name="line.844"></a>
+<span class="sourceLineNo">845</span> case OPENED:<a name="line.845"></a>
+<span class="sourceLineNo">846</span> case FAILED_OPEN:<a name="line.846"></a>
+<span class="sourceLineNo">847</span> case CLOSED:<a name="line.847"></a>
+<span class="sourceLineNo">848</span> assert transition.getRegionInfoCount() == 1 : transition;<a name="line.848"></a>
+<span class="sourceLineNo">849</span> final RegionInfo hri = ProtobufUtil.toRegionInfo(transition.getRegionInfo(0));<a name="line.849"></a>
+<span class="sourceLineNo">850</span> long procId =<a name="line.850"></a>
+<span class="sourceLineNo">851</span> transition.getProcIdCount() > 0 ? transition.getProcId(0) : Procedure.NO_PROC_ID;<a name="line.851"></a>
+<span class="sourceLineNo">852</span> updateRegionTransition(serverName, transition.getTransitionCode(), hri,<a name="line.852"></a>
+<span class="sourceLineNo">853</span> transition.hasOpenSeqNum() ? transition.getOpenSeqNum() : HConstants.NO_SEQNUM, procId);<a name="line.853"></a>
+<span class="sourceLineNo">854</span> break;<a name="line.854"></a>
+<span class="sourceLineNo">855</span> case READY_TO_SPLIT:<a name="line.855"></a>
+<span class="sourceLineNo">856</span> case SPLIT:<a name="line.856"></a>
+<span class="sourceLineNo">857</span> case SPLIT_REVERTED:<a name="line.857"></a>
+<span class="sourceLineNo">858</span> assert transition.getRegionInfoCount() == 3 : transition;<a name="line.858"></a>
+<span class="sourceLineNo">859</span> final RegionInfo parent = ProtobufUtil.toRegionInfo(transition.getRegionInfo(0));<a name="line.859"></a>
+<span class="sourceLineNo">860</span> final RegionInfo splitA = ProtobufUtil.toRegionInfo(transition.getRegionInfo(1));<a name="line.860"></a>
+<span class="sourceLineNo">861</span> final RegionInfo splitB = ProtobufUtil.toRegionInfo(transition.getRegionInfo(2));<a name="line.861"></a>
+<span class="sourceLineNo">862</span> updateRegionSplitTransition(serverName, transition.getTransitionCode(), parent, splitA,<a name="line.862"></a>
+<span class="sourceLineNo">863</span> splitB);<a name="line.863"></a>
+<span class="sourceLineNo">864</span> break;<a name="line.864"></a>
+<span class="sourceLineNo">865</span> case READY_TO_MERGE:<a name="line.865"></a>
+<span class="sourceLineNo">866</span> case MERGED:<a name="line.866"></a>
+<span class="sourceLineNo">867</span> case MERGE_REVERTED:<a name="line.867"></a>
+<span class="sourceLineNo">868</span> assert transition.getRegionInfoCount() == 3 : transition;<a name="line.868"></a>
+<span class="sourceLineNo">869</span> final RegionInfo merged = ProtobufUtil.toRegionInfo(transition.getRegionInfo(0));<a name="line.869"></a>
+<span class="sourceLineNo">870</span> final RegionInfo mergeA = ProtobufUtil.toRegionInfo(transition.getRegionInfo(1));<a name="line.870"></a>
+<span class="sourceLineNo">871</span> final RegionInfo mergeB = ProtobufUtil.toRegionInfo(transition.getRegionInfo(2));<a name="line.871"></a>
+<span class="sourceLineNo">872</span> updateRegionMergeTransition(serverName, transition.getTransitionCode(), merged, mergeA,<a name="line.872"></a>
+<span class="sourceLineNo">873</span> mergeB);<a name="line.873"></a>
+<span class="sourceLineNo">874</span> break;<a name="line.874"></a>
+<span class="sourceLineNo">875</span> }<a name="line.875"></a>
+<span class="sourceLineNo">876</span> }<a name="line.876"></a>
+<span class="sourceLineNo">877</span> }<a name="line.877"></a>
+<span class="sourceLineNo">878</span><a name="line.878"></a>
+<span class="sourceLineNo">879</span> public ReportRegionStateTransitionResponse reportRegionStateTransition(<a name="line.879"></a>
+<span class="sourceLineNo">880</span> final ReportRegionStateTransitionRequest req) throws PleaseHoldException {<a name="line.880"></a>
+<span class="sourceLineNo">881</span> ReportRegionStateTransitionResponse.Builder builder =<a name="line.881"></a>
+<span class="sourceLineNo">882</span> ReportRegionStateTransitionResponse.newBuilder();<a name="line.882"></a>
+<span class="sourceLineNo">883</span> ServerName serverName = ProtobufUtil.toServerName(req.getServer());<a name="line.883"></a>
+<span class="sourceLineNo">884</span> ServerStateNode serverNode = regionStates.getOrCreateServer(serverName);<a name="line.884"></a>
+<span class="sourceLineNo">885</span> // here we have to acquire a read lock instead of a simple exclusive lock. This is because that<a name="line.885"></a>
+<span class="sourceLineNo">886</span> // we should not block other reportRegionStateTransition call from the same region server. This<a name="line.886"></a>
+<span class="sourceLineNo">887</span> // is not only about performance, but also to prevent dead lock. Think of the meta region is<a name="line.887"></a>
+<span class="sourceLineNo">888</span> // also on the same region server and you hold the lock which blocks the<a name="line.888"></a>
+<span class="sourceLineNo">889</span> // reportRegionStateTransition for meta, and since meta is not online, you will block inside the<a name="line.889"></a>
+<span class="sourceLineNo">890</span> // lock protection to wait for meta online...<a name="line.890"></a>
+<span class="sourceLineNo">891</span> serverNode.readLock().lock();<a name="line.891"></a>
+<span class="sourceLineNo">892</span> try {<a name="line.892"></a>
+<span class="sourceLineNo">893</span> // we only accept reportRegionStateTransition if the region server is online, see the comment<a name="line.893"></a>
+<span class="sourceLineNo">894</span> // above in submitServerCrash method and HBASE-21508 for more details.<a name="line.894"></a>
+<span class="sourceLineNo">895</span> if (serverNode.isInState(ServerState.ONLINE)) {<a name="line.895"></a>
+<span class="sourceLineNo">896</span> try {<a name="line.896"></a>
+<span class="sourceLineNo">897</span> reportRegionStateTransition(builder, serverName, req.getTransitionList());<a name="line.897"></a>
+<span class="sourceLineNo">898</span> } catch (PleaseHoldException e) {<a name="line.898"></a>
+<span class="sourceLineNo">899</span> LOG.trace("Failed transition ", e);<a name="line.899"></a>
+<span class="sourceLineNo">900</span> throw e;<a name="line.900"></a>
+<span class="sourceLineNo">901</span> } catch (UnsupportedOperationException | IOException e) {<a name="line.901"></a>
+<span class="sourceLineNo">902</span> // TODO: at the moment we have a single error message and the RS will abort<a name="line.902"></a>
+<span class="sourceLineNo">903</span> // if the master says that one of the region transitions failed.<a name="line.903"></a>
+<span class="sourceLineNo">904</span> LOG.warn("Failed transition", e);<a name="line.904"></a>
+<span class="sourceLineNo">905</span> builder.setErrorMessage("Failed transition " + e.getMessage());<a name="line.905"></a>
+<span class="sourceLineNo">906</span> }<a name="line.906"></a>
+<span class="sourceLineNo">907</span> } else {<a name="line.907"></a>
+<span class="sourceLineNo">908</span> LOG.warn("The region server {} is already dead, skip reportRegionStateTransition call",<a name="line.908"></a>
+<span class="sourceLineNo">909</span> serverName);<a name="line.909"></a>
+<span class="sourceLineNo">910</span> builder.setErrorMessage("You are dead");<a name="line.910"></a>
+<span class="sourceLineNo">911</span> }<a name="line.911"></a>
+<span class="sourceLineNo">912</span> } finally {<a name="line.912"></a>
+<span class="sourceLineNo">913</span> serverNode.readLock().unlock();<a name="line.913"></a>
+<span class="sourceLineNo">914</span> }<a name="line.914"></a>
+<span class="sourceLineNo">915</span><a name="line.915"></a>
+<span class="sourceLineNo">916</span> return builder.build();<a name="line.916"></a>
+<span class="sourceLineNo">917</span> }<a name="line.917"></a>
+<span class="sourceLineNo">918</span><a name="line.918"></a>
+<span class="sourceLineNo">919</span> private void updateRegionTransition(ServerName serverName, TransitionCode state,<a name="line.919"></a>
+<span class="sourceLineNo">920</span> RegionInfo regionInfo, long seqId, long procId) throws IOException {<a name="line.920"></a>
+<span class="sourceLineNo">921</span> checkMetaLoaded(regionInfo);<a name="line.921"></a>
+<span class="sourceLineNo">922</span><a name="line.922"></a>
+<span class="sourceLineNo">923</span> RegionStateNode regionNode = regionStates.getRegionStateNode(regionInfo);<a name="line.923"></a>
+<span class="sourceLineNo">924</span> if (regionNode == null) {<a name="line.924"></a>
+<span class="sourceLineNo">925</span> // the table/region is gone. maybe a delete, split, merge<a name="line.925"></a>
+<span class="sourceLineNo">926</span> throw new UnexpectedStateException(String.format(<a name="line.926"></a>
+<span class="sourceLineNo">927</span> "Server %s was trying to transition region %s to %s. but the region was removed.",<a name="line.927"></a>
+<span class="sourceLineNo">928</span> serverName, regionInfo, state));<a name="line.928"></a>
+<span class="sourceLineNo">929</span> }<a name="line.929"></a>
+<span class="sourceLineNo">930</span> LOG.trace("Update region transition serverName={} region={} regionState={}", serverName,<a name="line.930"></a>
+<span class="sourceLineNo">931</span> regionNode, state);<a name="line.931"></a>
+<span class="sourceLineNo">932</span><a name="line.932"></a>
+<span class="sourceLineNo">933</span> ServerStateNode serverNode = regionStates.getOrCreateServer(serverName);<a name="line.933"></a>
+<span class="sourceLineNo">934</span> regionNode.lock();<a name="line.934"></a>
+<span class="sourceLineNo">935</span> try {<a name="line.935"></a>
+<span class="sourceLineNo">936</span> if (!reportTransition(regionNode, serverNode, state, seqId, procId)) {<a name="line.936"></a>
+<span class="sourceLineNo">937</span> // Don't log WARN if shutting down cluster; during shutdown. Avoid the below messages:<a name="line.937"></a>
+<span class="sourceLineNo">938</span> // 2018-08-13 10:45:10,551 WARN ...AssignmentManager: No matching procedure found for<a name="line.938"></a>
+<span class="sourceLineNo">939</span> // rit=OPEN, location=ve0538.halxg.cloudera.com,16020,1533493000958,<a name="line.939"></a>
+<span class="sourceLineNo">940</span> // table=IntegrationTestBigLinkedList, region=65ab289e2fc1530df65f6c3d7cde7aa5 transition<a name="line.940"></a>
+<span class="sourceLineNo">941</span> // to CLOSED<a name="line.941"></a>
+<span class="sourceLineNo">942</span> // These happen because on cluster shutdown, we currently let the RegionServers close<a name="line.942"></a>
+<span class="sourceLineNo">943</span> // regions. This is the only time that region close is not run by the Master (so cluster<a name="line.943"></a>
+<span class="sourceLineNo">944</span> // goes down fast). Consider changing it so Master runs all shutdowns.<a name="line.944"></a>
+<span class="sourceLineNo">945</span> if (this.master.getServerManager().isClusterShutdown() &&<a name="line.945"></a>
+<span class="sourceLineNo">946</span> state.equals(TransitionCode.CLOSED)) {<a name="line.946"></a>
+<span class="sourceLineNo">947</span> LOG.info("RegionServer {} {}", state, regionNode.getRegionInfo().getEncodedName());<a name="line.947"></a>
+<span class="sourceLineNo">948</span> } else {<a name="line.948"></a>
+<span class="sourceLineNo">949</span> LOG.warn("No matching procedure found for {} transition to {}", regionNode, state);<a name="line.949"></a>
+<span class="sourceLineNo">950</span> }<a name="line.950"></a>
+<span class="sourceLineNo">951</span> }<a name="line.951"></a>
+<span class="sourceLineNo">952</span> } finally {<a name="line.952"></a>
+<span class="sourceLineNo">953</span> regionNode.unlock();<a name="line.953"></a>
+<span class="sourceLineNo">954</span> }<a name="line.954"></a>
+<span class="sourceLineNo">955</span> }<a name="line.955"></a>
+<span class="sourceLineNo">956</span><a name="line.956"></a>
+<span class="sourceLineNo">957</span> private boolean reportTransition(RegionStateNode regionNode, ServerStateNode serverNode,<a name="line.957"></a>
+<span class="sourceLineNo">958</span> TransitionCode state, long seqId, long procId) throws IOException {<a name="line.958"></a>
+<span class="sourceLineNo">959</span> ServerName serverName = serverNode.getServerName();<a name="line.959"></a>
+<span class="sourceLineNo">960</span> TransitRegionStateProcedure proc = regionNode.getProcedure();<a name="line.960"></a>
+<span class="sourceLineNo">961</span> if (proc == null) {<a name="line.961"></a>
+<span class="sourceLineNo">962</span> return false;<a name="line.962"></a>
+<span class="sourceLineNo">963</span> }<a name="line.963"></a>
+<span class="sourceLineNo">964</span> proc.reportTransition(master.getMasterProcedureExecutor().getEnvironment(), regionNode,<a name="line.964"></a>
+<span class="sourceLineNo">965</span> serverName, state, seqId, procId);<a name="line.965"></a>
+<span class="sourceLineNo">966</span> return true;<a name="line.966"></a>
+<span class="sourceLineNo">967</span> }<a name="line.967"></a>
+<span class="sourceLineNo">968</span><a name="line.968"></a>
+<span class="sourceLineNo">969</span> private void updateRegionSplitTransition(final ServerName serverName, final TransitionCode state,<a name="line.969"></a>
+<span class="sourceLineNo">970</span> final RegionInfo parent, final RegionInfo hriA, final RegionInfo hriB)<a name="line.970"></a>
+<span class="sourceLineNo">971</span> throws IOException {<a name="line.971"></a>
+<span class="sourceLineNo">972</span> checkMetaLoaded(parent);<a name="line.972"></a>
+<span class="sourceLineNo">973</span><a name="line.973"></a>
+<span class="sourceLineNo">974</span> if (state != TransitionCode.READY_TO_SPLIT) {<a name="line.974"></a>
+<span class="sourceLineNo">975</span> throw new UnexpectedStateException("unsupported split regionState=" + state +<a name="line.975"></a>
+<span class="sourceLineNo">976</span> " for parent region " + parent +<a name="line.976"></a>
+<span class="sourceLineNo">977</span> " maybe an old RS (< 2.0) had the operation in progress");<a name="line.977"></a>
+<span class="sourceLineNo">978</span> }<a name="line.978"></a>
+<span class="sourceLineNo">979</span><a name="line.979"></a>
+<span class="sourceLineNo">980</span> // sanity check on the request<a name="line.980"></a>
+<span class="sourceLineNo">981</span> if (!Bytes.equals(hriA.getEndKey(), hriB.getStartKey())) {<a name="line.981"></a>
+<span class="sourceLineNo">982</span> throw new UnsupportedOperationException(<a name="line.982"></a>
+<span class="sourceLineNo">983</span> "unsupported split request with bad keys: parent=" + parent +<a name="line.983"></a>
+<span class="sourceLineNo">984</span> " hriA=" + hriA + " hriB=" + hriB);<a name="line.984"></a>
+<span class="sourceLineNo">985</span> }<a name="line.985"></a>
+<span class="sourceLineNo">986</span><a name="line.986"></a>
+<span class="sourceLineNo">987</span> // Submit the Split procedure<a name="line.987"></a>
+<span class="sourceLineNo">988</span> final byte[] splitKey = hriB.getStartKey();<a name="line.988"></a>
+<span class="sourceLineNo">989</span> if (LOG.isDebugEnabled()) {<a name="line.989"></a>
+<span class="sourceLineNo">990</span> LOG.debug("Split request from " + serverName +<a name="line.990"></a>
+<span class="sourceLineNo">991</span> ", parent=" + parent + " splitKey=" + Bytes.toStringBinary(splitKey));<a name="line.991"></a>
+<span class="sourceLineNo">992</span> }<a name="line.992"></a>
+<span class="sourceLineNo">993</span> master.getMasterProcedureExecutor().submitProcedure(createSplitProcedure(parent, splitKey));<a name="line.993"></a>
+<span class="sourceLineNo">994</span><a name="line.994"></a>
+<span class="sourceLineNo">995</span> // If the RS is < 2.0 throw an exception to abort the operation, we are handling the split<a name="line.995"></a>
+<span class="sourceLineNo">996</span> if (master.getServerManager().getVersionNumber(serverName) < 0x0200000) {<a name="line.996"></a>
+<span class="sourceLineNo">997</span> throw new UnsupportedOperationException(String.format(<a name="line.997"></a>
+<span class="sourceLineNo">998</span> "Split handled by the master: parent=%s hriA=%s hriB=%s", parent.getShortNameToLog(), hriA, hriB));<a name="line.998"></a>
+<span class="sourceLineNo">999</span> }<a name="line.999"></a>
+<span class="sourceLineNo">1000</span> }<a name="line.1000"></a>
+<span class="sourceLineNo">1001</span><a name="line.1001"></a>
+<span class="sourceLineNo">1002</span> private void updateRegionMergeTransition(final ServerName serverName, final TransitionCode state,<a name="line.1002"></a>
+<span class="sourceLineNo">1003</span> final RegionInfo merged, final RegionInfo hriA, final RegionInfo hriB) throws IOException {<a name="line.1003"></a>
+<span class="sourceLineNo">1004</span> checkMetaLoaded(merged);<a name="line.1004"></a>
+<span class="sourceLineNo">1005</span><a name="line.1005"></a>
+<span class="sourceLineNo">1006</span> if (state != TransitionCode.READY_TO_MERGE) {<a name="line.1006"></a>
+<span class="sourceLineNo">1007</span> throw new UnexpectedStateException("Unsupported merge regionState=" + state +<a name="line.1007"></a>
+<span class="sourceLineNo">1008</span> " for regionA=" + hriA + " regionB=" + hriB + " merged=" + merged +<a name="line.1008"></a>
+<span class="sourceLineNo">1009</span> " maybe an old RS (< 2.0) had the operation in progress");<a name="line.1009"></a>
+<span class="sourceLineNo">1010</span> }<a name="line.1010"></a>
+<span class="sourceLineNo">1011</span><a name="line.1011"></a>
+<span class="sourceLineNo">1012</span> // Submit the Merge procedure<a name="line.1012"></a>
+<span class="sourceLineNo">1013</span> if (LOG.isDebugEnabled()) {<a name="line.1013"></a>
+<span class="sourceLineNo">1014</span> LOG.debug("Handling merge request from RS=" + merged + ", merged=" + merged);<a name="line.1014"></a>
+<span class="sourceLineNo">1015</span> }<a name="line.1015"></a>
+<span class="sourceLineNo">1016</span> master.getMasterProcedureExecutor().submitProcedure(createMergeProcedure(hriA, hriB));<a name="line.1016"></a>
+<span class="sourceLineNo">1017</span><a name="line.1017"></a>
+<span class="sourceLineNo">1018</span> // If the RS is < 2.0 throw an exception to abort the operation, we are handling the merge<a name="line.1018"></a>
+<span class="sourceLineNo">1019</span> if (master.getServerManager().getVersionNumber(serverName) < 0x0200000) {<a name="line.1019"></a>
+<span class="sourceLineNo">1020</span> throw new UnsupportedOperationException(String.format(<a name="line.1020"></a>
+<span class="sourceLineNo">1021</span> "Merge not handled yet: regionState=%s merged=%s hriA=%s hriB=%s", state, merged, hriA,<a name="line.1021"></a>
+<span class="sourceLineNo">1022</span> hriB));<a name="line.1022"></a>
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+<span class="sourceLineNo">1026</span> // ============================================================================================<a name="line.1026"></a>
+<span class="sourceLineNo">1027</span> // RS Status update (report online regions) helpers<a name="line.1027"></a>
+<span class="sourceLineNo">1028</span> // ============================================================================================<a name="line.1028"></a>
+<span class="sourceLineNo">1029</span> /**<a name="line.1029"></a>
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+<span class="sourceLineNo">1036</span> * <p/><a name="line.1036"></a>
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+<span class="sourceLineNo">1038</span> */<a name="line.1038"></a>
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+<span class="sourceLineNo">1069</span><a name="line.1069"></a>
+<span class="sourceLineNo">1070</span> // just check and output possible inconsistency, without actually doing anything<a name="line.1070"></a>
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+<span class="sourceLineNo">1079</span> LOG.warn("No region state node for {}, it should already be on {}",<a name="line.1079"></a>
+<span class="sourceLineNo">1080</span> Bytes.toStringBinary(regionName), serverName);<a name="line.1080"></a>
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+<span class="sourceLineNo">1083</span> regionNode.lock();<a name="line.1083"></a>
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+<span class="sourceLineNo">1088</span> // report is generated before the closing, but arrive after the closing. Make sure there<a name="line.1088"></a>
+<span class="sourceLineNo">1089</span> // is some elapsed time so less false alarms.<a name="line.1089"></a>
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+<span class="sourceLineNo">1092</span> serverName);<a name="line.1092"></a>
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+<span class="sourceLineNo">1097</span> // elapsed time so less false alarms.<a name="line.1097"></a>
+<span class="sourceLineNo">1098</span> if (diff > 1000) {<a name="line.1098"></a>
+<span class="sourceLineNo">1099</span> LOG.warn("{} reported an unexpected OPEN on {}; time since last update={}ms",<a name="line.1099"></a>
+<span class="sourceLineNo">1100</span> regionNode, serverName, diff);<a name="line.1100"></a>
+<span class="sourceLineNo">1101</span> }<a name="line.1101"></a>
+<span class="sourceLineNo">1102</span> }<a name="line.1102"></a>
+<span class="sourceLineNo">1103</span> } finally {<a name="line.1103"></a>
+<span class="sourceLineNo">1104</span> regionNode.unlock();<a name="line.1104"></a>
+<span class="sourceLineNo">1105</span> }<a name="line.1105"></a>
+<span class="sourceLineNo">1106</span> }<a name="line.1106"></a>
+<span class="sourceLineNo">1107</span> }<a name="line.1107"></a>
+<span class="sourceLineNo">1108</span><a name="line.1108"></a>
+<span class="sourceLineNo">1109</span> // ============================================================================================<a name="line.1109"></a>
+<span class="sourceLineNo">1110</span> // RIT chore<a name="line.1110"></a>
+<span class="sourceLineNo">1111</span> // ============================================================================================<a name="line.1111"></a>
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+<span class="sourceLineNo">1116</span><a name="line.1116"></a>
+<span class="sourceLineNo">1117</span> @Override<a name="line.1117"></a>
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+<span class="sourceLineNo">1121</span> final RegionInTransitionStat ritStat = am.computeRegionInTransitionStat();<a name="line.1121"></a>
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+<span class="sourceLineNo">1126</span> }<a name="line.1126"></a>
+<span class="sourceLineNo">1127</span><a name="line.1127"></a>
+<span class="sourceLineNo">1128</span> // update metrics<a name="line.1128"></a>
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+<span class="sourceLineNo">1131</span> }<a name="line.1131"></a>
+<span class="sourceLineNo">1132</span><a name="line.1132"></a>
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+<span class="sourceLineNo">1135</span> rit.update(this);<a name="line.1135"></a>
+<span class="sourceLineNo">1136</span> return rit;<a name="line.1136"></a>
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+<span class="sourceLineNo">1138</span><a name="line.1138"></a>
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+<span class="sourceLineNo">1143</span> private long statTimestamp;<a name="line.1143"></a>
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+<span class="sourceLineNo">1146</span> private int totalRITs = 0;<a name="line.1146"></a>
+<span class="sourceLineNo">1147</span><a name="line.1147"></a>
+<span class="sourceLineNo">1148</span> @VisibleForTesting<a name="line.1148"></a>
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+<span class="sourceLineNo">1153</span><a name="line.1153"></a>
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+<span class="sourceLineNo">1193</span><a name="line.1193"></a>
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+<span class="sourceLineNo">1201</span><a name="line.1201"></a>
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+<span class="sourceLineNo">1205</span> update(regionStates.getRegionsStateInTransition(), statTimestamp);<a name="line.1205"></a>
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+<span class="sourceLineNo">1208</span><a name="line.1208"></a>
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+<span class="sourceLineNo">1215</span> LOG.warn("The RIT {} has no start time", state.getRegion());<a name="line.1215"></a>
+<span class="sourceLineNo">1216</span> continue;<a name="line.1216"></a>
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+<span class="sourceLineNo">1235</span> metrics.updateRITCount(ritStat.getTotalRITs());<a name="line.1235"></a>
+<span class="sourceLineNo">1236</span> metrics.updateRITCountOverThreshold(ritStat.getTotalRITsOverThreshold());<a name="line.1236"></a>
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+<span class="sourceLineNo">1238</span><a name="line.1238"></a>
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+<span class="sourceLineNo">1241</span> //if (regionNode.isStuck()) {<a name="line.1241"></a>
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+<span class="sourceLineNo">1247</span> // ============================================================================================<a name="line.1247"></a>
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+<span class="sourceLineNo">1361</span> // TODO: Metrics<a name="line.1361"></a>
+<span class="sourceLineNo">1362</span> // ============================================================================================<a name="line.1362"></a>
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+<span class="sourceLineNo">1394</span> LOG.info(<a name="line.1394"></a>
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+<span class="sourceLineNo">1422</span> // TODO: UTILS/HELPERS?<a name="line.1422"></a>
+<span class="sourceLineNo">1423</span> // ============================================================================================<a name="line.1423"></a>
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+<span class="sourceLineNo">1496</span> // and pre-assumptions are very tricky.<a name="line.1496"></a>
+<span class="sourceLineNo">1497</span> // ============================================================================================<a name="line.1497"></a>
+<span class="sourceLineNo">1498</span> private void transitStateAndUpdate(RegionStateNode regionNode, RegionState.State newState,<a name="line.1498"></a>
+<span class="sourceLineNo">1499</span> RegionState.State... expectedStates) throws IOException {<a name="line.1499"></a>
+<span class="sourceLineNo">1500</span> RegionState.State state = regionNode.getState();<a name="line.1500"></a>
+<span class="sourceLineNo">1501</span> regionNode.transitionState(newState, expectedStates);<a name="line.1501"></a>
+<span class="sourceLineNo">1502</span> boolean succ = false;<a name="line.1502"></a>
+<span class="sourceLineNo">1503</span> try {<a name="line.1503"></a>
+<span class="sourceLineNo">1504</span> regionStateStore.updateRegionLocation(regionNode);<a name="line.1504"></a>
+<span class="sourceLineNo">1505</span> succ = true;<a name="line.1505"></a>
+<span class="sourceLineNo">1506</span> } finally {<a name="line.1506"></a>
+<span class="sourceLineNo">1507</span> if (!succ) {<a name="line.1507"></a>
+<span class="sourceLineNo">1508</span> // revert<a name="line.1508"></a>
... 9970 lines suppressed ...