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https://issues.apache.org/jira/browse/HBASE-3679?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Kyle Purtell closed HBASE-3679.
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> Provide cost information associated with moving region(s)
> ---------------------------------------------------------
>
> Key: HBASE-3679
> URL: https://issues.apache.org/jira/browse/HBASE-3679
> Project: HBase
> Issue Type: Improvement
> Reporter: Ted Yu
> Priority: Major
>
> In order for load balancer to make better decision, we need to establish cost
> model for moving region(s).
> One factor would be the number of active scanners on a particular region.
> This count is easy to maintain at HRegion level. instantiateInternalScanner()
> can increment the counter and RegionScanner.close() would decrement the count.
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