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From "Amareshwari Sriramadasu (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (MAPREDUCE-1938) Ability for having user's classes take precedence over the system classes for tasks' classpath
Date Thu, 02 Sep 2010 08:34:57 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-1938?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Amareshwari Sriramadasu reassigned MAPREDUCE-1938:
--------------------------------------------------

    Assignee: Krishna Ramachandran

> Ability for having user's classes take precedence over the system classes for tasks'
classpath
> ----------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-1938
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1938
>             Project: Hadoop Map/Reduce
>          Issue Type: New Feature
>          Components: job submission, task, tasktracker
>            Reporter: Devaraj Das
>            Assignee: Krishna Ramachandran
>             Fix For: 0.22.0
>
>         Attachments: mapred-1938-1, mapred-1938-2.patch, mr-1938-bp20.1.patch, mr-1938-bp20.patch
>
>
> It would be nice to have the ability in MapReduce to allow users to specify for their
jobs alternate implementations of classes that are already defined in the MapReduce libraries.
For example, an alternate implementation for CombineFileInputFormat. 

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