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https://issues.apache.org/jira/browse/HBASE-22361?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16836498#comment-16836498
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Bahram Chehrazy commented on HBASE-22361:
-----------------------------------------

[~sershe], I've updated the patch based on your comment.

[~Apache9], this is another case were we saw regions stuck in OPENING and/or 
CLOSING state during shutdown of a region server. Could you please take a look.

> RegionServer could get stuck during shutdown process
> ----------------------------------------------------
>
>                 Key: HBASE-22361
>                 URL: https://issues.apache.org/jira/browse/HBASE-22361
>             Project: HBase
>          Issue Type: Bug
>          Components: regionserver
>    Affects Versions: 3.0.0, 2.2.0
>            Reporter: Bahram Chehrazy
>            Assignee: Bahram Chehrazy
>            Priority: Major
>         Attachments: 
> Assign-and-close-event-handlers-should-remove-region-2.patch
>
>
> When the server is being aborted or stopped, the server waits for all online 
> regions to flush and close. And if a region is at the end of opening process, 
> the openEventHandler throws an exception. However, it fails to remove that 
> region from the on-line regions and fails to notify the master. This would 
> prevent the server shutdown loop to exit.
> Similarly, if regions that are being closed fail for any reason, the 
> closeEventHandler throws, but again, it fails to remove that region from the 
> on-line list.
>  
>  



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