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https://issues.apache.org/jira/browse/HBASE-1419?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12725866#action_12725866
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Jonathan Gray commented on HBASE-1419:
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Maybe we can clean this behavior up as part of HBASE-1583
> Assignment and balance need to coordinate; assigner gives out up to 10
> regions at a time unbalancing a balanced cluster making for churn, etc.
> ----------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HBASE-1419
> URL: https://issues.apache.org/jira/browse/HBASE-1419
> Project: Hadoop HBase
> Issue Type: Bug
> Reporter: stack
>
> Assigner needs to take into account current region balance. I'm seeing on
> recovery from a crash on a big cluster that we'll give near ten regions to
> first regionserver that reports in. If that regionserver successfully opens
> the assigned ten, then that'll put it over the balancer slop differential and
> it'll then be asked to close its regions by the balancer. This adds to the
> regionserver crash churn. Dumb.
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