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From "Jeff Hammerbacher (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-279) Map-Reduce 2.0
Date Thu, 17 Feb 2011 11:47:24 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-279?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12995768#comment-12995768
] 

Jeff Hammerbacher commented on MAPREDUCE-279:
---------------------------------------------

Hey Arun,

Wow, thanks for reviving one of my favorite old issues! One question: how much code does the
prototype share with Hadoop MapReduce? My understanding is that it's mostly new code. If that's
the case, have you considered creating a separate Apache Incubator project for the new two-level
scheduler? Mesos, for example, has similar aims and is going the Apache Incubator route. I
am aware of at least one other effort on this front, and having the projects gestate in the
Incubator rather than as a branch of Hadoop would allow them to release more regularly while
young and would be more in line with the dreams of the project split (having HDFS and MapReduce
developed as separate projects). This seems like a great opportunity to continue the trend
of keeping individual ASF projects small and focused so that releases require less work and
can happen more regularly. What do you think?

Later,
Jeff

> 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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