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From "Mariappan Asokan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-2454) Allow external sorter plugin for MR
Date Wed, 05 Sep 2012 21:01:11 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2454?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13449130#comment-13449130
] 

Mariappan Asokan commented on MAPREDUCE-2454:
---------------------------------------------

Hi Arun,
  The failing test TestBlocksWithNotEnoughRacks seems to be unrelated to this patch.  MiniDFSCluster
is failing during shutdown.  Can you please review the patch while I look at the cause of
failure?

Thanks.

-- Asokan

                
> Allow external sorter plugin for MR
> -----------------------------------
>
>                 Key: MAPREDUCE-2454
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2454
>             Project: Hadoop Map/Reduce
>          Issue Type: New Feature
>    Affects Versions: 2.0.0-alpha, 3.0.0, 2.2.0-alpha
>            Reporter: Mariappan Asokan
>            Assignee: Mariappan Asokan
>            Priority: Minor
>              Labels: features, performance, plugin, sort
>         Attachments: HadoopSortPlugin.pdf, HadoopSortPlugin.pdf, KeyValueIterator.java,
MapOutputSorterAbstract.java, MapOutputSorter.java, mapreduce-2454.patch, mapreduce-2454.patch,
mapreduce-2454.patch, mapreduce-2454.patch, mapreduce-2454.patch, mapreduce-2454.patch, mapreduce-2454.patch,
mapreduce-2454.patch, mapreduce-2454.patch, mapreduce-2454.patch, mr-2454-on-mr-279-build82.patch.gz,
MR-2454-trunkPatchPreview.gz, ReduceInputSorter.java
>
>
> Define interfaces and some abstract classes in the Hadoop framework to facilitate external
sorter plugins both on the Map and Reduce sides.

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