[jira] [Updated] (HBASE-4539) OpenedRegionHandler racing with itself in ServerShutDownhandler flow leading to HMaster abort

["ramkrishna.s.vasudevan (Updated) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-4539?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ramkrishna.s.vasudevan updated HBASE-4539:
------------------------------------------

    Fix Version/s: 0.92.0
    
> 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
>             Fix For: 0.92.0
>
>
> 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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