Assignment and balance need to coordinate; assigner gives out up to 10 regions
at a time unbalancing a balanced cluster making for churn, etc.
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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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