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From "eric baldeschwieler (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-279) Map-Reduce 2.0
Date Tue, 22 Feb 2011 00:56:40 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-279?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12997614#comment-12997614
] 

eric baldeschwieler commented on MAPREDUCE-279:
-----------------------------------------------

Hi Jeff,

A couple of thoughts:

1) Discussions on how to reorganize the hadoop universe probably should be moved from this
bug to their own thread.  Can we restrict this thread to discussions about the design and
implementation of this work?  Feel free to start this discussion on general or in JIRA.

2) I agree with you that it is important that we structure hadoop so that it is easy to plugin
and use other technologies and I would welcome your contribution of code to help make that
a reality in this case.

3) My experience with the project split has been very negative.  It is becoming much harder,
not easier to evolve the hadoop code base.  Hence nigel's suggestions (which I support) to
actually move the projects closer together.  Since map-reduce is the core of Hadoop, I think
it is import that Hadoop remain able to deliver the worlds best MR solution within the project.

4) We consider this work a natural evolution of the MR project.  Please don't refer to it
as Yahoo! cluster manager.  That will just confuse the discussion.  The intent is to complete
this work in apache and others are more then welcome to help us with it.

Thanks,

E14


> 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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