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From "Arun C Murthy (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (MAPREDUCE-2642) Fix two bugs in v2.app.speculate.DataStatistics
Date Sat, 13 Aug 2011 07:26:27 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-2642?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Arun C Murthy resolved MAPREDUCE-2642.
--------------------------------------

    Resolution: Fixed

I just committed this. Thanks Josh!

> Fix two bugs in v2.app.speculate.DataStatistics
> -----------------------------------------------
>
>                 Key: MAPREDUCE-2642
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2642
>             Project: Hadoop Map/Reduce
>          Issue Type: Sub-task
>          Components: mrv2
>            Reporter: Josh Wills
>            Assignee: Josh Wills
>            Priority: Minor
>         Attachments: MAPREDUCE-2642.patch, MR-2642-1.patch
>
>
> Fixes two bugs in DataStatistics: a divide by zero in the variance calculation when count
== 0, and a synchronization issue in how the updateStatistics method was implemented.

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