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Date: Thu, 2 Jun 2011 03:38:47 +0000 (UTC)
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Subject: [jira] [Commented] (MAPREDUCE-2469) Task counters should also
 report the total heap usage of the task
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    [ https://issues.apache.org/jira/browse/MAPREDUCE-2469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13042592#comment-13042592 ] 

Hudson commented on MAPREDUCE-2469:
-----------------------------------

Integrated in Hadoop-Mapreduce-trunk-Commit #708 (See [https://builds.apache.org/hudson/job/Hadoop-Mapreduce-trunk-Commit/708/])
    MAPREDUCE-2469. Task counters should also report the total heap usage of the task. (Ravi Gummadi and Amar Ramesh Kamat via amarrk)

amarrk : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1130393
Files : 
* /hadoop/mapreduce/trunk/CHANGES.txt
* /hadoop/mapreduce/trunk/src/java/org/apache/hadoop/mapred/Task.java
* /hadoop/mapreduce/trunk/src/java/org/apache/hadoop/mapreduce/TaskCounter.java
* /hadoop/mapreduce/trunk/src/test/mapred/org/apache/hadoop/mapred/TestJobCounters.java
* /hadoop/mapreduce/trunk/src/java/org/apache/hadoop/mapreduce/TaskCounter.properties


> 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
>             Fix For: 0.23.0
>
>         Attachments: 2469.v0.1.patch, mapreduce-2469-v1.1.patch, mapreduce-2469-v1.2.patch, mapreduce-2469-v1.3.patch, mapreduce-2469-v1.4.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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