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From "Jean-Marc Spaggiari (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8912) [0.94] AssignmentManager throws IllegalStateException from PENDING_OPEN to OFFLINE
Date Fri, 03 Jan 2014 22:53:52 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8912?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13861982#comment-13861982
] 

Jean-Marc Spaggiari commented on HBASE-8912:
--------------------------------------------

Yep, all 36 regions belonged to a server whith Snappy issues. It will have been nice to see
them re-assigned successfuly somewhere else. I can reproduce that easily, I just need to remove
the snappy so file...

Also, regarding the warning, if I clear what, that gives that:
2014-01-03 16:32:21,278 WARN AssignmentManager: Received OPENED for region 0...a from server
node1  but region was in  the state  state=OPEN,  and not in expected OFFLINE, PENDING_OPEN
or OPENING states

If we get OPENED and region is OPEN, can we not simply discard the warning? That mean region
is fine, we got a request to open it and it's already done. So why should we worry? ;)

> [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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