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https://issues.apache.org/jira/browse/HBASE-4539?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ramkrishna.s.vasudevan resolved HBASE-4539.
-------------------------------------------
Resolution: Fixed
Fixed as part of HBASE-4540
> 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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