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From "Amar Kamat (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-2469) Task counters should also report the total heap usage of the task
Date Tue, 31 May 2011 05:09:48 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-2469?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Amar Kamat updated MAPREDUCE-2469:
----------------------------------

    Attachment: mapreduce-2469-v1.2.patch

Attaching a new patch. Changed TaskCounter.properties to provide textual description to the
newly added counter. Thanks Owen for pointing it out.

test-patch passed on my box. Changes to TaskCounter.properties should not affect the test
cases.

> Task counters should also report the total heap usage of the task
> -----------------------------------------------------------------
>
>                 Key: MAPREDUCE-2469
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2469
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: task
>    Affects Versions: 0.23.0
>            Reporter: Amar Kamat
>            Assignee: Amar Kamat
>              Labels: mapreduce
>         Attachments: 2469.v0.1.patch, mapreduce-2469-v1.1.patch, mapreduce-2469-v1.2.patch
>
>
> Currently, the task counters report VSS and RSS usage of the task. The task counter should
also report the total heap usage of the task also. The task might be configured with a max
heap size of M but the task's total heap usage might only be H, where H < M. In such a
case, knowing only M doesn't provide a complete picture of the task's memory usage.  

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