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https://issues.apache.org/jira/browse/HBASE-14473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14905067#comment-14905067
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Mikhail Antonov commented on HBASE-14473:
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So hbase.master.balancer.regionLocationCacheTime changed meaning from mins to
millisecs? And the default you use got 8 time bigger?
> Compute region locality in parallel
> -----------------------------------
>
> Key: HBASE-14473
> URL: https://issues.apache.org/jira/browse/HBASE-14473
> Project: HBase
> Issue Type: Bug
> Components: Balancer
> Affects Versions: 1.2.0
> Reporter: Elliott Clark
> Assignee: Elliott Clark
> Fix For: 2.0.0, 1.2.0, 1.3.0
>
> Attachments: HBASE-14473-v1.patch, HBASE-14473.patch
>
>
> Right now on large clusters it's necessary to turn off the locality balance
> cost as it takes too long to compute the region locality. This is because
> it's computed when need in serial.
> We should compute this in parallel before it's needed.
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