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From "Mahadev konar (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-1207) Allow admins to set java options for map/reduce tasks
Date Wed, 28 Sep 2011 02:33:45 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-1207?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Mahadev konar updated MAPREDUCE-1207:
-------------------------------------

    Fix Version/s: 0.23.0
    
> Allow admins to set java options for map/reduce tasks
> -----------------------------------------------------
>
>                 Key: MAPREDUCE-1207
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1207
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: client, mrv2
>            Reporter: Arun C Murthy
>            Assignee: Arun C Murthy
>            Priority: Blocker
>             Fix For: 0.23.0
>
>         Attachments: mapred-1207.patch
>
>
> It will be useful for allow cluster-admins to set some java options for child map/reduce
tasks. 
> E.g. We've had to ask users to set -Djava.net.preferIPv4Stack=true in their jobs, it
would be nice to do it for all users in such scenarios even when people override mapred.child.{map|reduce}.java.opts
but forget to add this.

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