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https://issues.apache.org/jira/browse/HBASE-10248?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13857767#comment-13857767
 ] 

Lars Hofhansl commented on HBASE-10248:
---------------------------------------

Actually this is the reason:
{code}
2013-12-26 07:55:11,646 FATAL 
[MASTER_CLOSE_REGION-janus.apache.org,36597,1388044485155-1] 
master.HMaster(1621): Master server abort: loaded coprocessors are: []
2013-12-26 07:55:11,646 FATAL 
[MASTER_CLOSE_REGION-janus.apache.org,36597,1388044485155-1] 
master.HMaster(1626): Unexpected state : 
testRetrying,ttt,1388044498231.50d8f699ee870d7af05aa4f4b6824e8c. 
state=PENDING_OPEN, ts=1388044511646, 
server=janus.apache.org,42769,1388044485732 .. Cannot transit it to OFFLINE.
java.lang.IllegalStateException: Unexpected state : 
testRetrying,ttt,1388044498231.50d8f699ee870d7af05aa4f4b6824e8c. 
state=PENDING_OPEN, ts=1388044511646, 
server=janus.apache.org,42769,1388044485732 .. Cannot transit it to OFFLINE.
        at 
org.apache.hadoop.hbase.master.AssignmentManager.setOfflineInZooKeeper(AssignmentManager.java:1890)
        at 
org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:1690)
        at 
org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:1426)
        at 
org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:1398)
        at 
org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:1393)
        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}


> [0.94] TestMetaReaderEditor fails frequently
> --------------------------------------------
>
>                 Key: HBASE-10248
>                 URL: https://issues.apache.org/jira/browse/HBASE-10248
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Lars Hofhansl
>             Fix For: 0.94.16
>
>
> Eample:
> {code}
> java.lang.AssertionError: reader: count=2, t=null
>       at org.junit.Assert.fail(Assert.java:93)
>       at org.junit.Assert.assertTrue(Assert.java:43)
>       at 
> org.apache.hadoop.hbase.catalog.TestMetaReaderEditor.testRetrying(TestMetaReaderEditor.java:152)
> {code}
> https://builds.apache.org/job/HBase-0.94/1239/



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