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From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-76) Implement speculative re-execution of reduces
Date Tue, 21 Nov 2006 20:41:06 GMT
     [ http://issues.apache.org/jira/browse/HADOOP-76?page=all ]

Doug Cutting updated HADOOP-76:
-------------------------------

           Status: Resolved  (was: Patch Available)
    Fix Version/s: 0.9.0
       Resolution: Fixed

I just committed this.

I made one change, making PhasedFileSystem package-private rather than public.  It's easier
to make something public later than to make it non-public once it is public, and we should
strive to minimize our public APIs.

Thanks, Sanjay!

> Implement speculative re-execution of reduces
> ---------------------------------------------
>
>                 Key: HADOOP-76
>                 URL: http://issues.apache.org/jira/browse/HADOOP-76
>             Project: Hadoop
>          Issue Type: Improvement
>          Components: mapred
>    Affects Versions: 0.1.0
>            Reporter: Doug Cutting
>         Assigned To: Sanjay Dahiya
>            Priority: Minor
>             Fix For: 0.9.0
>
>         Attachments: Hadoop-76.patch, Hadoop-76_1.patch, Hadoop-76_2.patch, Hadoop-76_3.patch,
Hadoop-76_4.patch, Hadoop-76_5.patch, Hadoop-76_6.patch, spec_reducev.patch
>
>
> As a first step, reduce task outputs should go to temporary files which are renamed when
the task completes.

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