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Posted to mapreduce-issues@hadoop.apache.org by "Nigel Daley (JIRA)" <ji...@apache.org> on 2011/01/10 22:07:51 UTC

[jira] Updated: (MAPREDUCE-1938) Ability for having user's classes take precedence over the system classes for tasks' classpath

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

Nigel Daley updated MAPREDUCE-1938:
-----------------------------------

    Fix Version/s:     (was: 0.22.0)
                   0.23.0

Too late for 0.22.  Moving Fix Version from 0.22 to 0.23.

> 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
>            Priority: Blocker
>             Fix For: 0.23.0
>
>         Attachments: mapred-1938-1, mapred-1938-2.patch, mapred-1938-3.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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