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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-14968) ConcurrentModificationException in region close resulting in the region staying in closing state
Date Sat, 19 Dec 2015 17:18:46 GMT

    [ https://issues.apache.org/jira/browse/HBASE-14968?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15065436#comment-15065436
] 

Hudson commented on HBASE-14968:
--------------------------------

FAILURE: Integrated in HBase-0.98-matrix #275 (See [https://builds.apache.org/job/HBase-0.98-matrix/275/])
HBASE-14968 ConcurrentModificationException in region close resulting in (apurtell: rev 07afd40024b453cd9965cf2af4bf3dceb6739106)
* hbase-server/src/main/java/org/apache/hadoop/hbase/executor/EventHandler.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/CoprocessorHost.java
* hbase-server/src/test/java/org/apache/hadoop/hbase/executor/TestExecutorService.java


> 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
>            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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