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From "Sean Busbey (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-14968) ConcurrentModificationException in region close resulting in the region staying in closing state
Date Tue, 22 Dec 2015 07:00:53 GMT

     [ https://issues.apache.org/jira/browse/HBASE-14968?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sean Busbey updated HBASE-14968:
--------------------------------
    Component/s: regionserver
                 Region Assignment

> ConcurrentModificationException in region close resulting in the region staying in closing
state
> ------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-14968
>                 URL: https://issues.apache.org/jira/browse/HBASE-14968
>             Project: HBase
>          Issue Type: Bug
>          Components: Region Assignment, regionserver
>            Reporter: Enis Soztutar
>            Assignee: Enis Soztutar
>             Fix For: 2.0.0, 1.2.0, 1.3.0, 1.1.4, 0.98.17, 1.0.4
>
>         Attachments: hbase-14968_v1.patch
>
>
> We have seen this in our tests. The region gets closed, but the region close handler
gets an unexpected exception causing the region to stay in closing state until RS is restarted.

> The Phoenix and security coprocessors were loaded in that region. Here is the stack trace:

> {code}
> java.util.ConcurrentModificationException
> 	at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901)
> 	at java.util.ArrayList$Itr.next(ArrayList.java:851)
> 	at org.apache.hadoop.hbase.coprocessor.CoprocessorHost$Environment.shutdown(CoprocessorHost.java:442)
> 	at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost$RegionEnvironment.shutdown(RegionCoprocessorHost.java:155)
> 	at org.apache.hadoop.hbase.coprocessor.CoprocessorHost.shutdown(CoprocessorHost.java:272)
> 	at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost$5.postEnvCall(RegionCoprocessorHost.java:496)
> 	at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.execOperation(RegionCoprocessorHost.java:1761)
> 	at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.postClose(RegionCoprocessorHost.java:489)
> 	at org.apache.hadoop.hbase.regionserver.HRegion.doClose(HRegion.java:1502)
> 	at org.apache.hadoop.hbase.regionserver.HRegion.close(HRegion.java:1349)
> 	at org.apache.hadoop.hbase.regionserver.handler.CloseRegionHandler.process(CloseRegionHandler.java:138)
> 	at org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:128)
> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> 	at java.lang.Thread.run(Thread.java:745)
> {code}



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