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https://issues.apache.org/jira/browse/MAPREDUCE-279?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13003086#comment-13003086
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Scott Carey commented on MAPREDUCE-279:
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Re: Shuffle.
See https://issues.apache.org/jira/browse/MAPREDUCE-318
Those changes are in 0.21+ (and perhaps Y!'s distro but not Cloudera's), I
believe. This doesn't do everything mentioned but is a significant improvement.
> Map-Reduce 2.0
> --------------
>
> Key: MAPREDUCE-279
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-279
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: jobtracker, tasktracker
> Reporter: Arun C Murthy
> Assignee: Arun C Murthy
> Fix For: 0.23.0
>
>
> Re-factor MapReduce into a generic resource scheduler and a per-job,
> user-defined component that manages the application execution.
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