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From "Phabricator (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5344) [89-fb] Scan unassigned region directory on master failover
Date Tue, 14 Feb 2012 21:40:00 GMT

    [ 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.


> [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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