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https://issues.apache.org/jira/browse/HBASE-6404?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13417298#comment-13417298
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Elliott Clark commented on HBASE-6404:
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Only kind of. HBASE-6261 is talking about replacing our histogram
implementation to make it more accurate. HBase already has a histogram
implementation that works. HBASE-6261 is just about accuracy for the 99.95%
and 99.995% percentile numbers on extremely skewed distributions.
This seems to be about using a histogram in more places, where we currently use
PersistantTimeVaryingRate.
> Collect p50, p75 and p95 stats
> ------------------------------
>
> Key: HBASE-6404
> URL: https://issues.apache.org/jira/browse/HBASE-6404
> Project: HBase
> Issue Type: Improvement
> Components: monitoring
> Reporter: Arjen Roodselaar
> Assignee: Liyin Tang
>
> Stats in current versions of HBase are currently exposed as avg, min and max.
> This gives a skewed view of performance as the outliers are usually the
> indicators of problems. Please revise the stats collection framework to use
> true buckets and expose the p50, p75 and p95 values of these buckets through
> JMX.
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