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https://issues.apache.org/jira/browse/HBASE-12368?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14187715#comment-14187715
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Ted Yu commented on HBASE-12368:
--------------------------------

AtomicUtils would be used by classes such as HRegion.java (in HBASE-10201)

Probably it shouldn't be moved.

> Use FastLongHistogram to accellerate histogram based metric stats
> -----------------------------------------------------------------
>
>                 Key: HBASE-12368
>                 URL: https://issues.apache.org/jira/browse/HBASE-12368
>             Project: HBase
>          Issue Type: Improvement
>          Components: metrics
>    Affects Versions: 1.0.0, 2.0.0
>            Reporter: Yi Deng
>            Assignee: Yi Deng
>            Priority: Minor
>              Labels: metrics
>         Attachments: 
> 0001-Add-Percentiles-who-uses-FatLongHistogram-to-replace.patch
>
>
> Use FastLongHistogram to accellerate histogram based metric stats.



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