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From "Ravi Prakash (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-4721) Task startup time in JHS is same as job startup time.
Date Sat, 13 Oct 2012 02:13:03 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4721?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13475501#comment-13475501
] 

Ravi Prakash commented on MAPREDUCE-4721:
-----------------------------------------

I would disagree with you there Bobby! If I'm on the task page, as a user, I don't want to
have to figure out that a task attempt was never launched by matching with the job start time.
I want to see unequivocally in readily apparent letters "N/A" like the great Ravi meant for
me to see, so that I know that task attempts were never launched.

I suggest changing the AM to do the same. I'll upload a patch for that.
                
> Task startup time in JHS is same as job startup time.
> -----------------------------------------------------
>
>                 Key: MAPREDUCE-4721
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4721
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: jobhistoryserver
>    Affects Versions: 0.23.3, 3.0.0, 2.0.2-alpha
>            Reporter: Ravi Prakash
>            Assignee: Ravi Prakash
>         Attachments: MAPREDUCE-4721.patch
>
>
> As Bobby pointed out in https://issues.apache.org/jira/browse/MAPREDUCE-4711?focusedCommentId=13471696&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13471696
> In the Map and Reduce tasks page, it should print the earliest task attempt launch time
as TaskImpl:getLaunchTime() does.

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