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Date: Tue, 14 Feb 2012 21:40:00 +0000 (UTC)
From: "Phabricator (Commented) (JIRA)" <jira@apache.org>
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Subject: [jira] [Commented] (HBASE-5344) [89-fb] Scan unassigned region
 directory on master failover
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    [ https://issues.apache.org/jira/browse/HBASE-5344?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13208036#comment-13208036 ] 

Phabricator commented on HBASE-5344:
------------------------------------

stack has commented on the revision "[jira] [HBASE-5344] [89-fb] Scan unassigned region directory on master failover".

  Looking forward to it.

  Why the change in direction?  Why not ask the regionservers?  (Out of interest?)  Good stuff.

REVISION DETAIL
  https://reviews.facebook.net/D1605

                
> [89-fb] Scan unassigned region directory on master failover
> -----------------------------------------------------------
>
>                 Key: HBASE-5344
>                 URL: https://issues.apache.org/jira/browse/HBASE-5344
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Mikhail Bautin
>            Assignee: Mikhail Bautin
>         Attachments: D1605.1.patch
>
>
> In case the master dies after a regionserver writes region state as OPENED or CLOSED in ZK but before the update is received by master and written to meta, the new master that comes up has to pick up the region state from ZK and write it to meta. Otherwise we can get multiply-assigned regions.

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