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Posted to issues@hbase.apache.org by "Vladimir Rodionov (JIRA)" <ji...@apache.org> on 2014/08/28 20:58:09 UTC
[jira] [Commented] (HBASE-11854) MetricsRegion.updateScanNext takes
20% of overall RegionScannerImpl.nextRaw call
[ https://issues.apache.org/jira/browse/HBASE-11854?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14114161#comment-14114161 ]
Vladimir Rodionov commented on HBASE-11854:
-------------------------------------------
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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