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https://issues.apache.org/jira/browse/HADOOP-5751?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12703433#action_12703433
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Hong Tang commented on HADOOP-5751:
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Such information may be useful in several ways:
- Visualizing the resource usage of a user job over time.
- Identifying user application hotspots.
- Identifying scheduling anomaly in MapReduce framework.
> Collecting cpu and memory usage for MapReduce tasks
> ---------------------------------------------------
>
> Key: HADOOP-5751
> URL: https://issues.apache.org/jira/browse/HADOOP-5751
> Project: Hadoop Core
> Issue Type: New Feature
> Components: mapred
> Reporter: Hong Tang
>
> It would be nice for TaskTracker to collect cpu and memory usage for
> individual Map or Reduce tasks over time.
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