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From "Scott Chen (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-220) Collecting cpu and memory usage for MapReduce tasks
Date Fri, 07 May 2010 01:10:56 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-220?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12864985#action_12864985
] 

Scott Chen commented on MAPREDUCE-220:
--------------------------------------

I had some discussion with Arun. The problem with the Counter is that it can only be incremented.
So it is difficult to use to transmit CPU and memory information (this goes up and down).
We filed another JIRA MAPREDUCE-1762 to allow setValue() in Counter.
Then we may use Counters to send these information.

What do you think?

> Collecting cpu and memory usage for MapReduce tasks
> ---------------------------------------------------
>
>                 Key: MAPREDUCE-220
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-220
>             Project: Hadoop Map/Reduce
>          Issue Type: New Feature
>          Components: task, tasktracker
>            Reporter: Hong Tang
>            Assignee: Scott Chen
>             Fix For: 0.22.0
>
>         Attachments: MAPREDUCE-220-v1.txt, MAPREDUCE-220.txt
>
>
> It would be nice for TaskTracker to collect cpu and memory usage for individual Map or
Reduce tasks over time.

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