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https://issues.apache.org/jira/browse/HBASE-8307?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13627055#comment-13627055
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Elliott Clark commented on HBASE-8307:
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Trunk has a quantile class that mirrors what is in hadoop's trunk. It should
be a good place to start.
> Adding a Histogram utility which captures data and creates a histogram.
> -----------------------------------------------------------------------
>
> Key: HBASE-8307
> URL: https://issues.apache.org/jira/browse/HBASE-8307
> Project: HBase
> Issue Type: New Feature
> Components: metrics
> Affects Versions: 0.89-fb
> Reporter: Manukranth Kolloju
> Assignee: Manukranth Kolloju
> Priority: Minor
> Fix For: 0.89-fb
>
> Original Estimate: 168h
> Remaining Estimate: 168h
>
> This diff is to create a Histogram class which can be used to find the
> Percentile estimates of metrics in HBase. We can use this utility to
> calculate P99/P95 metrics of various metrics like latency etc.
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