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From "Robert Chansler (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-2751) Increase map/reduce child tasks' heapsize from current default of 200M to 512M
Date Tue, 25 Mar 2008 03:03:25 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-2751?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Robert Chansler updated HADOOP-2751:
------------------------------------

    Fix Version/s:     (was: 0.17.0)

> Increase map/reduce child tasks' heapsize from current default of 200M to 512M
> ------------------------------------------------------------------------------
>
>                 Key: HADOOP-2751
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2751
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.16.0
>            Reporter: Arun C Murthy
>            Assignee: Arun C Murthy
>
> I guess we should look to check why we get OOMs with 200M, I'd suspect io.sort.mb hogs
a lot of the default 200M. However, HADOOP-1867 should be the right way to solve it. 
> For now, I propose we bump up the child-vm default heapsize to 512M; too many people
are getting burnt by 200M.

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