[jira] [Commented] (MAPREDUCE-279) Map-Reduce 2.0

["Arun C Murthy (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MAPREDUCE-279?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13047866#comment-13047866 ] 

Arun C Murthy commented on MAPREDUCE-279:
-----------------------------------------

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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