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https://issues.apache.org/jira/browse/HBASE-3102?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stack resolved HBASE-3102.
--------------------------

      Resolution: Fixed
    Hadoop Flags: [Reviewed]

Committing after Gary review.  Thanks for the patch Nicolas and thanks for the 
review Gary.

> Enhance HBase rMetrics for Long-running Stats
> ---------------------------------------------
>
>                 Key: HBASE-3102
>                 URL: https://issues.apache.org/jira/browse/HBASE-3102
>             Project: HBase
>          Issue Type: Improvement
>          Components: regionserver
>            Reporter: Nicolas Spiegelberg
>            Assignee: Nicolas Spiegelberg
>             Fix For: 0.90.0
>
>         Attachments: HBASE-3102_90.patch
>
>
> Example: a useful metric to observe track is compaction count + duration. 
> Since compactions are long running and only happen infrequently, the 
> avg/opcount stats are should be reset longer than the default polling period 
> (5 sec). In addition to 'hbase.period', we should allow a different duration 
> after which long-running metrics should expire. This would also fix our 
> existing metrics problem where min/max stats are never reset until the 
> process is restarted/upgraded.

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