[jira] [Commented] (HBASE-5344) [89-fb] Scan unassigned region directory on master failover

["Ian Varley (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-5344?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13444107#comment-13444107 ] 

Ian Varley commented on HBASE-5344:
-----------------------------------

Hey Mikhail, I see that the original phabricator review was abandoned, and that there's a new one (D2085) that shows to be committed on 8/5 (presumably to the FB-89 branch). Should this JIRA be closed? Is there another JIRA to include porting the work in review D2085 to trunk? (I searched and couldn't find one, but maybe it's under another name.)
                
> [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: ASF.LICENSE.NOT.GRANTED--D1605.1.patch, ASF.LICENSE.NOT.GRANTED--D1605.2.patch, ASF.LICENSE.NOT.GRANTED--D1605.3.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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