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Date: Tue, 2 Jul 2013 00:23:20 +0000 (UTC)
From: "Jimmy Xiang (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
Message-ID: <JIRA.12654561.1372098285120.195491.1372724600212@arcas>
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Subject: [jira] [Updated] (HBASE-8797) Prevent merging regions from moving
 during online merge
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     [ https://issues.apache.org/jira/browse/HBASE-8797?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jimmy Xiang updated HBASE-8797:
-------------------------------

    Status: Patch Available  (was: Open)

In the attached patch, a new state MERGING is adding.  When two regions are merging to a new one, both existing regions are moved to MERGING state so that they won't be moved by mistake.
                
> 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
>         Attachments: trunk-8797.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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