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