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https://issues.apache.org/jira/browse/MAPREDUCE-2454?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13026358#comment-13026358
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Mariappan Asokan commented on MAPREDUCE-2454:
---------------------------------------------

Hi Steve,
  Thanks for your comments.  I will definitely take a look at the MAPREDUCE-279 
branch.  I will be providing a public implementation of the interface.  It will 
use GNU sort command as the external sorter.  Sure, I will extend my interfaces 
from Closeable.

-- 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
>            Reporter: Mariappan Asokan
>            Priority: Minor
>         Attachments: MapOutputSorter.java, 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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