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https://issues.apache.org/jira/browse/HBASE-18829?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16168469#comment-16168469
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Ted Yu commented on HBASE-18829:
--------------------------------

If Phoenix has solution in place dealing with the NotServingRegionException, it 
would be safer to revert.

> Consider reverting HBASE-14893 Race between mutation on region and region 
> closing operation
> -------------------------------------------------------------------------------------------
>
>                 Key: HBASE-18829
>                 URL: https://issues.apache.org/jira/browse/HBASE-18829
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Ted Yu
>            Assignee: Ted Yu
>         Attachments: 18829.v1.txt
>
>
> HBASE-14893 was brought to attention by [~rajeshbabu] over PHOENIX-3111.
> This issue is to consider reverting the fix from HBASE-14893 based on the 
> following observations:
> * The closing boolean was intended to be acquired before taking the lock 
> ([~enis])
> * Phoenix local index has evolved over the years, the situation leading to 
> NotServingRegionException may not exist from Phoenix side
> * Even if the situation still exists, downstream project (Phoenix) should 
> properly handle NotServingRegionException without change in locking scheme in 
> hbase



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