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https://issues.apache.org/jira/browse/TEZ-3957?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16677425#comment-16677425
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Gopal V commented on TEZ-3957:
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[~sershe]: can you fix the NS_TO_MS with the java time conversions?
MapReduce would not need a similar counter, the container lifetimes can be used
as a proxy for this in wall-clock seconds, but with Tez we're moved down from
the second to the millisecond time-frame where the ntpd slew would be visible.
> Report TASK_DURATION_MILLIS as a Counter for completed tasks
> ------------------------------------------------------------
>
> Key: TEZ-3957
> URL: https://issues.apache.org/jira/browse/TEZ-3957
> Project: Apache Tez
> Issue Type: Improvement
> Reporter: Eric Wohlstadter
> Assignee: Sergey Shelukhin
> Priority: Major
> Attachments: TEZ-3957.01.patch, TEZ-3957.patch
>
>
> timeTaken is already being reported by {{TaskAttemptFinishedEvent}}, but not
> as a Counter.
> Combined with TEZ-3911, this provides min(timeTaken), max(timeTaken),
> avg(timeTaken).
> The value will be: {{finishTime - launchTime}}
>
>
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