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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-3337) Restore HBCK fix of unassignment and dupe assignment for new master
Date Mon, 13 Dec 2010 23:26:01 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3337?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12971077#action_12971077
] 

Todd Lipcon commented on HBASE-3337:
------------------------------------

I just ran this on a cluster which had a large disabled table, and it kind of freaked out
- made unassigned ZK nodes for every region, even though the region should be offline. Not
certain if it's new due to this patch or if it already existed

> Restore HBCK fix of unassignment and dupe assignment for new master
> -------------------------------------------------------------------
>
>                 Key: HBASE-3337
>                 URL: https://issues.apache.org/jira/browse/HBASE-3337
>             Project: HBase
>          Issue Type: Bug
>          Components: master, util
>            Reporter: Jonathan Gray
>            Assignee: Jonathan Gray
>            Priority: Critical
>             Fix For: 0.90.0, 0.92.0
>
>
> HBCK fixing of region unassignment and duplicate assignment was broken with the move
to the new master.
> We've seen it happen doing testing of 0.90 RCs like that over in HBASE-3332.
> Rather than the old "clear everything out approach" which relied on the BaseScanner,
in the new master we should just manipulate unassigned ZK nodes and let the master handle
the transition.

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