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https://issues.apache.org/jira/browse/HBASE-13471?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14504047#comment-14504047
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Rajesh Nishtala commented on HBASE-13471:
-----------------------------------------
In fairness I think there are two bugs here. (1) the client has a row / region
mismatch under some circumstances that are yet TBD and (2) when that occurs
there's a possible infinite loop. This addresses the later by propagating up
the wrong region information to the client. With this fix in we can hopefully
find the cause of (1) with the extra debugging information that results from
the fix for (2).
> Deadlock closing a region
> -------------------------
>
> Key: HBASE-13471
> URL: https://issues.apache.org/jira/browse/HBASE-13471
> Project: HBase
> Issue Type: Bug
> Reporter: Elliott Clark
> Assignee: Rajesh Nishtala
> Attachments: HBASE-13471.patch
>
>
> {code}
> Thread 4139
> (regionserver/hbase412.example.com/10.158.6.53:60020-splits-1429003183537):
> State: WAITING
> Blocked count: 131
> Waited count: 228
> Waiting on
> java.util.concurrent.locks.ReentrantReadWriteLock$NonfairSync@50714dc3
> Stack:
> sun.misc.Unsafe.park(Native Method)
> java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
>
> java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)
>
> java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:870)
>
> java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1199)
>
> java.util.concurrent.locks.ReentrantReadWriteLock$WriteLock.lock(ReentrantReadWriteLock.java:943)
> org.apache.hadoop.hbase.regionserver.HRegion.doClose(HRegion.java:1371)
> org.apache.hadoop.hbase.regionserver.HRegion.close(HRegion.java:1325)
>
> org.apache.hadoop.hbase.regionserver.SplitTransactionImpl.stepsBeforePONR(SplitTransactionImpl.java:352)
>
> org.apache.hadoop.hbase.regionserver.SplitTransactionImpl.createDaughters(SplitTransactionImpl.java:252)
>
> org.apache.hadoop.hbase.regionserver.SplitTransactionImpl.execute(SplitTransactionImpl.java:509)
>
> org.apache.hadoop.hbase.regionserver.SplitRequest.run(SplitRequest.java:84)
>
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> java.lang.Thread.run(Thread.java:745)
> {code}
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