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From "Jimmy Xiang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8797) Prevent merging regions from moving during online merge
Date Wed, 03 Jul 2013 14:54:21 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8797?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13699039#comment-13699039
] 

Jimmy Xiang commented on HBASE-8797:
------------------------------------

Currently, we never set a region to split state any more.  That's why it's removed. So far,
I just made sure the unit tests are ok.  For testing on live cluster, I will do it with the
hbase-it issue.  Thanks a lot for the review.
                
> Prevent merging regions from moving during online merge
> -------------------------------------------------------
>
>                 Key: HBASE-8797
>                 URL: https://issues.apache.org/jira/browse/HBASE-8797
>             Project: HBase
>          Issue Type: Bug
>          Components: regionserver
>            Reporter: Jimmy Xiang
>            Assignee: Jimmy Xiang
>             Fix For: 0.98.0, 0.95.2
>
>         Attachments: trunk-8797.patch, trunk-8797_v2.1.patch, trunk-8797_v2.patch
>
>
> When two regions are merged online, they are closed but master doesn't know they should
stay closed during the merge.  If master moves them by mistake, for example, load balancer
kicks in, the merge could be messed up.

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