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From "Aaron T. Myers (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-3650) Use MutableQuantiles to provide latency histograms for various operations
Date Thu, 12 Jul 2012 22:49:36 GMT

     [ https://issues.apache.org/jira/browse/HDFS-3650?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Aaron T. Myers updated HDFS-3650:

    Target Version/s: 2.0.1-alpha
       Fix Version/s:     (was: 2.0.1-alpha)

Setting the target version instead of the "fix version." Please only set the fix version once
it's been committed.
> 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
> 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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