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https://issues.apache.org/jira/browse/HBASE-20006?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16426431#comment-16426431
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Toshihiro Suzuki commented on HBASE-20006:
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I just reattached the v3 patch to rerun a build.
> TestRestoreSnapshotFromClientWithRegionReplicas is flakey
> ---------------------------------------------------------
>
> Key: HBASE-20006
> URL: https://issues.apache.org/jira/browse/HBASE-20006
> Project: HBase
> Issue Type: Bug
> Components: read replicas
> Reporter: stack
> Assignee: Toshihiro Suzuki
> Priority: Critical
> Attachments: HBASE-20006.branch-2.001.patch,
> HBASE-20006.master.001.patch, HBASE-20006.master.002.patch,
> HBASE-20006.master.003.patch, HBASE-20006.master.003.patch
>
>
> Failing 10% of the time. Interestingly, it is below that causes fail. We go
> to split but it is already split. We will then fail the split with an
> internal assert which messes up procedures; at a minimum we should just not
> split (this is in the prepare stage).
> {code}
> 2018-02-15 23:21:42,162 INFO [PEWorker-12]
> procedure.MasterProcedureScheduler(571): pid=105,
> state=RUNNABLE:SPLIT_TABLE_REGION_PREPARE; SplitTableRegionProcedure
> table=testOnlineSnapshotAfterSplittingRegions-1518736887838,
> parent=3f850cea7d71a7ebd019f2f009efca4d,
> daughterA=06b5e6366efbef155d70e56cfdf58dc9,
> daughterB=8c175de1b33765a5683ac1e502edb0bd,
> table=testOnlineSnapshotAfterSplittingRegions-1518736887838,
> testOnlineSnapshotAfterSplittingRegions-1518736887838,,1518736887882.3f850cea7d71a7ebd019f2f009efca4d.
> 2018-02-15 23:21:42,162 INFO [PEWorker-12]
> assignment.SplitTableRegionProcedure(440): Split of {ENCODED =>
> 3f850cea7d71a7ebd019f2f009efca4d, NAME =>
> 'testOnlineSnapshotAfterSplittingRegions-1518736887838,,1518736887882.3f850cea7d71a7ebd019f2f009efca4d.',
> STARTKEY => '', ENDKEY => '1'} skipped; state is already SPLIT
> 2018-02-15 23:21:42,163 ERROR [PEWorker-12]
> procedure2.ProcedureExecutor(1480): CODE-BUG: Uncaught runtime exception:
> pid=105, state=RUNNABLE:SPLIT_TABLE_REGION_PREPARE; SplitTableRegionProcedure
> table=testOnlineSnapshotAfterSplittingRegions-1518736887838,
> parent=3f850cea7d71a7ebd019f2f009efca4d,
> daughterA=06b5e6366efbef155d70e56cfdf58dc9,
> daughterB=8c175de1b33765a5683ac1e502edb0bd
> java.lang.AssertionError: split region should have an exception here
> at
> org.apache.hadoop.hbase.master.assignment.SplitTableRegionProcedure.executeFromState(SplitTableRegionProcedure.java:228)
> at
> org.apache.hadoop.hbase.master.assignment.SplitTableRegionProcedure.executeFromState(SplitTableRegionProcedure.java:89)
> at
> org.apache.hadoop.hbase.procedure2.StateMachineProcedure.execute(StateMachineProcedure.java:180)
> at
> org.apache.hadoop.hbase.procedure2.Procedure.doExecute(Procedure.java:845)
> at
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor.execProcedure(ProcedureExecutor.java:1455)
> at
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor.executeProcedure(ProcedureExecutor.java:1224)
> at
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor.access$800(ProcedureExecutor.java:78)
> at
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor$WorkerThread.run(ProcedureExecutor.java:1734)
> {code}
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