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https://issues.apache.org/jira/browse/HBASE-25517?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiaolin Ha resolved HBASE-25517.
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Resolution: Won't Fix
Since few are interested in this issue, close it now.
> Support parallel balance RSGroups
> ---------------------------------
>
> Key: HBASE-25517
> URL: https://issues.apache.org/jira/browse/HBASE-25517
> Project: HBase
> Issue Type: Improvement
> Components: Balancer
> Reporter: Xiaolin Ha
> Assignee: Xiaolin Ha
> Priority: Major
>
> When we call balanceRSGroup(), it waits for the lock of balancer, which may
> be occupied by the overall cluster balance(). Sometimes the balance of
> cluster will take a long time because it need to compute the costs or act the
> balance region plans.
> In RSGroup, we don't need to block a balance of one group due to other group
> balances.
> All group are mini clusters, and the balance of their regions should support
> concurrently execution and reduce the race conditions between them.
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