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https://issues.apache.org/jira/browse/HBASE-4464?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stack resolved HBASE-4464.
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Resolution: Not A Problem
Resolving. For old balancer, not for new stochastic.
> Make region balancing parallel with balancer.balanceCluster()
> -------------------------------------------------------------
>
> Key: HBASE-4464
> URL: https://issues.apache.org/jira/browse/HBASE-4464
> Project: HBase
> Issue Type: Improvement
> Reporter: Ted Yu
>
> balancer.balanceCluster() generates RegionPlans for HMaster.balance() to
> execute.
> We don't retract any RegionPlan in balancer.balanceCluster().
> In the near future, more complex algorithm would be introduced to try
> achieving maximum block location affinity for the regions to be moved. This
> means balancer.balanceCluster() would take longer to return.
> This JIRA makes region balancing parallel with balancer.balanceCluster()
> Meaning region balancing would be performed when balancer.balanceCluster() is
> still running.
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