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https://issues.apache.org/jira/browse/HBASE-11854?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14114161#comment-14114161
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Vladimir Rodionov commented on HBASE-11854:
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MutableHistogram.add takes most of the time. One of the ideas is not to call
this update on every nextRaw (J. Leach).
> MetricsRegion.updateScanNext takes 20% of overall RegionScannerImpl.nextRaw
> call
> --------------------------------------------------------------------------------
>
> Key: HBASE-11854
> URL: https://issues.apache.org/jira/browse/HBASE-11854
> Project: HBase
> Issue Type: Bug
> Components: metrics, Performance, Scanners
> Affects Versions: 0.98.6
> Reporter: Vladimir Rodionov
> Assignee: Vladimir Rodionov
>
> From our internal profiling we were surprised by amount of time spent in this
> call. Further investigation is needed.
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