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https://issues.apache.org/jira/browse/MAPREDUCE-279?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13047866#comment-13047866
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Arun C Murthy commented on MAPREDUCE-279:
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Tom, I don't understand the distinction between classic-impl and nextgen-impl...
Both 'classic' and 'nextgen' MR use the same 'runtime' i.e. MapTask,ReduceTask,
shuffle etc. which is what is currently under 'mr-client'. I'm happy to
brainstorm on a better name for it... how about 'mr-runtime'?
> 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
>
> Attachments: MR-279.patch, MR-279.patch, MR-279.sh,
> MR-279_MR_files_to_move.txt, capacity-scheduler-dark-theme.png,
> multi-column-stable-sort-default-theme.png, yarn-state-machine.job.dot,
> yarn-state-machine.job.png, yarn-state-machine.task-attempt.dot,
> yarn-state-machine.task-attempt.png, yarn-state-machine.task.dot,
> yarn-state-machine.task.png
>
>
> Re-factor MapReduce into a generic resource scheduler and a per-job,
> user-defined component that manages the application execution.
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