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https://issues.apache.org/jira/browse/TEZ-3957?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16665699#comment-16665699
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Sergey Shelukhin commented on TEZ-3957:
---------------------------------------

I'm going to fix some but not all checkstyle warnings... some of them don't 
make any sense (e.g. DesignForExtension - 
http://checkstyle.sourceforge.net/config_design.html#DesignForExtension 
mentions that it only makes sense for library projects, as is it prevents 
normal method overrides - perhaps it should be disabled in a separate patch.), 
some diffing seems to be buggy (complaining about lack of javadoc for a field 
that was already there and without javadoc). 

> 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.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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