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https://issues.apache.org/jira/browse/HADOOP-1038?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12475515
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Doug Cutting commented on HADOOP-1038:
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I was just thinking overall, i.e., for tasks the amount of time since start (if
it's incomplete) or its total time (if it's complete), for phases, the total
time in the phase, and for jobs, the total time in the job. Instantaneous
rates could be nice as a later feature.
> counters: want rates and averages, and phase-level sums
> -------------------------------------------------------
>
> Key: HADOOP-1038
> URL: https://issues.apache.org/jira/browse/HADOOP-1038
> Project: Hadoop
> Issue Type: New Feature
> Components: mapred
> Reporter: Doug Cutting
>
> It would be nice if the web ui displayed, for each counter, not just its
> total, but also its rate (counts/second). Also, for job-level counts,
> per-task averages should be displayed, of both total and rate. Ideally we
> could also include phase-level counts (map versus reduce). Thus we could
> display, e.g., average map task input bytes/second for a job.
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