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From "Mariappan Asokan (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-4812) Create reduce input merger plugin in ReduceTask.java and pass it to Shuffle
Date Tue, 20 Nov 2012 23:54:58 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-4812?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Mariappan Asokan updated MAPREDUCE-4812:

    Attachment: mapreduce-4812.patch

Hi Arun & Alejandro,
  I am uploading a patch that implements the bare-bones requirements for the reduce input
merger plugin.  I will create a simple mock test for the plugin and post it with some protection
changes so that the test will run.

Arun, in this patch an instance of {{ReduceInputMerger}} plugin is passed to {{Shuffle}} constructor
as you asked for.  I figured out a way to implement sort avoidance plugin.  However, I need
MAPREDUCE-4049(shuffle plugin) to be committed before that.

-- Asokan
> Create reduce input merger plugin in ReduceTask.java and pass it to Shuffle
> ---------------------------------------------------------------------------
>                 Key: MAPREDUCE-4812
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4812
>             Project: Hadoop Map/Reduce
>          Issue Type: Sub-task
>            Reporter: Mariappan Asokan
>            Assignee: Mariappan Asokan
>         Attachments: mapreduce-4812.patch
> This is part of MAPREDUCE-2454.  This further breaks down MAPREDUCE-4808

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