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https://issues.apache.org/jira/browse/HDFS-3650?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13421081#comment-13421081
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Aaron T. Myers commented on HDFS-3650:
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Hey Andrew, the patch seems to no longer apply to trunk. Would you mind
rebasing it and uploading again? Sorry for the delay.
> Use MutableQuantiles to provide latency histograms for various operations
> -------------------------------------------------------------------------
>
> Key: HDFS-3650
> URL: https://issues.apache.org/jira/browse/HDFS-3650
> Project: Hadoop HDFS
> Issue Type: Improvement
> Affects Versions: 2.0.0-alpha
> Reporter: Andrew Wang
> Assignee: Andrew Wang
> Attachments: hdfs-3650-1.patch
>
>
> MutableQuantiles provide accurate estimation of various percentiles for a
> stream of data. Many existing metrics reported by a MutableRate would also
> benefit from having these percentiles; lets add MutableQuantiles where we
> think it'd be useful.
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