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https://issues.apache.org/jira/browse/HBASE-19527?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16331032#comment-16331032
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stack commented on HBASE-19527:
-------------------------------
Got a +1 too up on RB from [~Apache9] (Need to fix an import).
Here is a case where this patch will help.
TestRegionsOnMasterOptions.testRegionsOnAllServers is one of our flakies.
Looking at a hang, a Pv2 Worker thread is stuck trying to set region status to
CLOSE but the hbase:meta is not available – we are on our way out.
Thread 2087 (ProcExecWrkr-8): State: TIMED_WAITING Blocked count: 6 Waited
count: 11937 Stack: java.lang.Object.wait(Native Method)
org.apache.hadoop.hbase.client.AsyncRequestFutureImpl.waitUntilDone(AsyncRequestFutureImpl.java:1228)
org.apache.hadoop.hbase.client.AsyncRequestFutureImpl.waitUntilDone(AsyncRequestFutureImpl.java:1197)
org.apache.hadoop.hbase.client.HTable.doBatchWithCallback(HTable.java:485)
org.apache.hadoop.hbase.util.MultiHConnection.processBatchCallback(MultiHConnection.java:122)
org.apache.hadoop.hbase.master.assignment.RegionStateStore.updateRegionLocation(RegionStateStore.java:222)
org.apache.hadoop.hbase.master.assignment.RegionStateStore.updateUserRegionLocation(RegionStateStore.java:209)
org.apache.hadoop.hbase.master.assignment.RegionStateStore.updateRegionLocation(RegionStateStore.java:149)
org.apache.hadoop.hbase.master.assignment.AssignmentManager.markRegionAsClosing(AssignmentManager.java:1536)
org.apache.hadoop.hbase.master.assignment.UnassignProcedure.updateTransition(UnassignProcedure.java:179)
org.apache.hadoop.hbase.master.assignment.RegionTransitionProcedure.execute(RegionTransitionProcedure.java:309)
org.apache.hadoop.hbase.master.assignment.RegionTransitionProcedure.execute(RegionTransitionProcedure.java:85)
org.apache.hadoop.hbase.procedure2.Procedure.doExecute(Procedure.java:845)
org.apache.hadoop.hbase.procedure2.ProcedureExecutor.execProcedure(ProcedureExecutor.java:1456)
org.apache.hadoop.hbase.procedure2.ProcedureExecutor.executeProcedure(ProcedureExecutor.java:1225)
org.apache.hadoop.hbase.procedure2.ProcedureExecutor.access$800(ProcedureExecutor.java:78)
org.apache.hadoop.hbase.procedure2.ProcedureExecutor$WorkerThread.run(ProcedureExecutor.java:1735)
> Make ExecutorService threads daemon=true.
> -----------------------------------------
>
> Key: HBASE-19527
> URL: https://issues.apache.org/jira/browse/HBASE-19527
> Project: HBase
> Issue Type: Sub-task
> Reporter: stack
> Assignee: stack
> Priority: Major
> Fix For: 2.0.0-beta-2
>
> Attachments: HBASE-19527.branch-2.001.patch,
> HBASE-19527.branch-2.002.patch, HBASE-19527.master.001.patch,
> HBASE-19527.master.001.patch, HBASE-19527.master.001.patch,
> HBASE-19527.master.002.patch
>
>
> Let me try this. ExecutorService runs OPENs, CLOSE, etc. If Server is going
> down, no point in these threads sticking around (I think). Let me try this.
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