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https://issues.apache.org/jira/browse/MAPREDUCE-220?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12779292#action_12779292
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Vinod K V commented on MAPREDUCE-220:
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bq. B2. cumulative used cpu time (for all cores) since the machine is up (in
millisecond)
bq. I'd also propose A4. Total number of child processes in the process tree
rooted from the main task process.
What can these two stats possibly be used for?
> 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
> Reporter: Hong Tang
> Assignee: Scott Chen
>
> It would be nice for TaskTracker to collect cpu and memory usage for
> individual Map or Reduce tasks over time.
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