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https://issues.apache.org/jira/browse/HBASE-4539?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13123657#comment-13123657
]
Hudson commented on HBASE-4539:
-------------------------------
Integrated in HBase-0.92 #54 (See
[https://builds.apache.org/job/HBase-0.92/54/])
HBASE-4540 OpenedRegionHandler is not enforcing atomicity of the operation
it is performing. Also addresses HBASE-4539. (Ram)
ramkrishna :
Files :
* /hbase/branches/0.92/CHANGES.txt
*
/hbase/branches/0.92/src/main/java/org/apache/hadoop/hbase/master/AssignmentManager.java
*
/hbase/branches/0.92/src/main/java/org/apache/hadoop/hbase/master/handler/OpenedRegionHandler.java
*
/hbase/branches/0.92/src/main/java/org/apache/hadoop/hbase/zookeeper/ZKAssign.java
*
/hbase/branches/0.92/src/main/java/org/apache/hadoop/hbase/zookeeper/ZKUtil.java
*
/hbase/branches/0.92/src/test/java/org/apache/hadoop/hbase/master/TestOpenedRegionHandler.java
> OpenedRegionHandler racing with itself in ServerShutDownhandler flow leading
> to HMaster abort
> ---------------------------------------------------------------------------------------------
>
> Key: HBASE-4539
> URL: https://issues.apache.org/jira/browse/HBASE-4539
> Project: HBase
> Issue Type: Bug
> Reporter: ramkrishna.s.vasudevan
> Assignee: ramkrishna.s.vasudevan
>
> Steps to reproduce
> ==================
> -> Region R1 is being opened in RS1.
> ->After processing the znode to OPENED RS1 goes down.
> ->Now before the OpenedRegionHandler executor deletes the znode if
> ServerShutDownHandler tries to assign the region to RS2, RS2 transits the
> node to OPENED and this OpenedRegionHandler executor deletes the znode.
> ->Now if the first OpenedRegionHandler tries deleting the znode it throws
> NoNode Exception and causes the HMaster to abort.
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