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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:
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[~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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