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From "Elliott Clark (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6404) Collect p50, p75 and p95 stats
Date Tue, 17 Jul 2012 21:43:34 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6404?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13416635#comment-13416635

Elliott Clark commented on HBASE-6404:

Moving things to MetricsHistogram (or whatever the new metrics2 class name will be) will do
this.  However it comes with a cost so we should be judicious about it's usage.
> 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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