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https://issues.apache.org/jira/browse/MAPREDUCE-2642?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arun C Murthy updated MAPREDUCE-2642:
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Status: Open (was: Patch Available)
+1
Josh, can you pls re-gen the patch. It's a little stale.
> 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
>
>
> 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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