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https://issues.apache.org/jira/browse/HBASE-2240?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12905129#action_12905129
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Jonathan Gray commented on HBASE-2240:
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Or even longer. We could always add something to trigger a prematurely
balance, either user-triggered or when the cluster gets especially out of
balance.
> Balancer should not reassign (because of overloading) a region that was just
> opened
> -----------------------------------------------------------------------------------
>
> Key: HBASE-2240
> URL: https://issues.apache.org/jira/browse/HBASE-2240
> Project: HBase
> Issue Type: Bug
> Components: documentation
> Reporter: stack
> Priority: Minor
>
> I'm running a mapreduce job. I see a region split and its daughters come on
> line and then 8 seconds later, master judges the regionserver overloaded and
> so closes the just-opened region. This messes up clients. They may have
> just picked up the new location for their row query and now its moved again
> and client has to go hunting anew.
> We need to assign the vintage regions first.
> I'm going to change balancer slop. Its not sloppy enough and balancing cuts
> in too early.
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