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From "ramkrishna.s.vasudevan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8912) [0.94] AssignmentManager throws IllegalStateException from PENDING_OPEN to OFFLINE
Date Thu, 09 Jan 2014 10:30:04 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8912?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13866519#comment-13866519
] 

ramkrishna.s.vasudevan commented on HBASE-8912:
-----------------------------------------------

the abort statement me and my old colleagues we thought of removing but did not do that just
because it was leading to other issues. 
The fix here could lead to double assignments and as Jimmy said considering it as a lesser
occurence ( i may not use 'rare' here), it is ok to go with this.

> [0.94] AssignmentManager throws IllegalStateException from PENDING_OPEN to OFFLINE
> ----------------------------------------------------------------------------------
>
>                 Key: HBASE-8912
>                 URL: https://issues.apache.org/jira/browse/HBASE-8912
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Enis Soztutar
>            Assignee: Lars Hofhansl
>            Priority: Critical
>             Fix For: 0.94.16
>
>         Attachments: 8912-0.94-alt2.txt, 8912-0.94.txt, 8912-fix-race.txt, HBASE-8912.patch,
HBase-0.94 #1036 test - testRetrying [Jenkins].html, log.txt, org.apache.hadoop.hbase.catalog.TestMetaReaderEditor-output.txt
>
>
> AM throws this exception which subsequently causes the master to abort: 
> {code}
> java.lang.IllegalStateException: Unexpected state : testRetrying,jjj,1372891751115.9b828792311001062a5ff4b1038fe33b.
state=PENDING_OPEN, ts=1372891751912, server=hemera.apache.org,39064,1372891746132 .. Cannot
transit it to OFFLINE.
> 	at org.apache.hadoop.hbase.master.AssignmentManager.setOfflineInZooKeeper(AssignmentManager.java:1879)
> 	at org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:1688)
> 	at org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:1424)
> 	at org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:1399)
> 	at org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:1394)
> 	at org.apache.hadoop.hbase.master.handler.ClosedRegionHandler.process(ClosedRegionHandler.java:105)
> 	at org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:175)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
> 	at java.lang.Thread.run(Thread.java:662)
> {code}
> This exception trace is from the failing test TestMetaReaderEditor which is failing pretty
frequently, but looking at the test code, I think this is not a test-only issue, but affects
the main code path. 
> https://builds.apache.org/job/HBase-0.94/1036/testReport/junit/org.apache.hadoop.hbase.catalog/TestMetaReaderEditor/testRetrying/



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