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From "Andrew Wang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-3650) Use MutableQuantiles to provide latency histograms for various operations
Date Thu, 12 Jul 2012 22:40:33 GMT
Andrew Wang created HDFS-3650:
---------------------------------

             Summary: 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
             Fix For: 2.0.1-alpha


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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