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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3759) Provide ability to run memory intensive jobs without affecting other running tasks on the nodes
Date Wed, 20 Aug 2008 06:10:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3759?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12623913#action_12623913
] 

Owen O'Malley commented on HADOOP-3759:
---------------------------------------

I agree with Eric that keeping the ulimit capability is a good thing. It is better to prevent
the problem than react to the problem, given a choice...

> Provide ability to run memory intensive jobs without affecting other running tasks on
the nodes
> -----------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-3759
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3759
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: mapred
>            Reporter: Hemanth Yamijala
>            Assignee: Hemanth Yamijala
>             Fix For: 0.19.0
>
>         Attachments: HADOOP-3759.patch, HADOOP-3759.patch, HADOOP-3759.patch, HADOOP-3759.patch,
HADOOP-3759.patch, HADOOP-3759.patch, HADOOP-3759.patch
>
>
> In HADOOP-3581, we are discussing how to prevent memory intensive tasks from affecting
Hadoop daemons and other tasks running on a node. A related requirement is that users be provided
an ability to run jobs which are memory intensive. The system must provide enough knobs to
allow such jobs to be run while still maintaining the requirements of HADOOP-3581.

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