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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 03:23:03 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4721?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13475512#comment-13475512
] 

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

Allow me to recant what I said! In the AM, when the task startup time is the same as the job
startup time, the status says "Scheduled". So its indicative that it has been "Scheduled"
at (that job) startup time. However, in a JHS, the task has already either finished, or failed/killed.
In case the task attempt was never launched, I want to see N/A. If an attempt was launched
(but failed), I want to see the start time of the first attempt.

Can we please commit the patch as is? 
                
> 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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