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Date: Fri, 20 Sep 2013 15:55:54 +0000 (UTC)
From: "Jimmy Xiang (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
Message-ID: <JIRA.12668174.1378940973573.168610.1379692554426@arcas>
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Subject: [jira] [Updated] (HBASE-9514) Prevent region from assigning before
 log splitting is done
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     [ https://issues.apache.org/jira/browse/HBASE-9514?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jimmy Xiang updated HBASE-9514:
-------------------------------

    Status: Open  (was: Patch Available)
    
> Prevent region from assigning before log splitting is done
> ----------------------------------------------------------
>
>                 Key: HBASE-9514
>                 URL: https://issues.apache.org/jira/browse/HBASE-9514
>             Project: HBase
>          Issue Type: Bug
>          Components: Region Assignment
>            Reporter: Jimmy Xiang
>            Assignee: Jimmy Xiang
>            Priority: Blocker
>         Attachments: trunk-9514_v1.patch, trunk-9514_v2.patch, trunk-9514_v3.patch
>
>
> If a region is assigned before log splitting is done by the server shutdown handler, the edits belonging to this region in the hlogs of the dead server will be lost.
> Generally this is not an issue if users don't assign/unassign a region from hbase shell or via hbase admin. These commands are marked for experts only in the hbase shell help too.  However, chaos monkey doesn't care.
> If we can prevent from assigning such regions in a bad time, it would make things a little safer.

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