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From "David Ciemiewicz (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-1545) Add 'first-task-launched' to job-summary
Date Tue, 18 May 2010 23:56:55 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1545?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12868917#action_12868917
] 

David Ciemiewicz commented on MAPREDUCE-1545:
---------------------------------------------

Is this only for "first task" or are we measuring wait times in pending state for ALL tasks?

Last week, we ran out of reduce slots.  I had one job where 150 of my reduce tasks had completed
but other 150 were in a pending state (not running) for over 1 hour.

Are we measuring pending time for all tasks or only for first task?

> Add 'first-task-launched' to job-summary
> ----------------------------------------
>
>                 Key: MAPREDUCE-1545
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1545
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: jobtracker
>            Reporter: Arun C Murthy
>            Assignee: Luke Lu
>             Fix For: 0.22.0
>
>         Attachments: mr-1545-trunk-v1.patch, mr-1545-trunk-v2.patch, mr-1545-y20s-v1.patch,
mr-1545-y20s-v2.patch, mr-1545-y20s-v3.patch
>
>
> It would be useful to track 'first-task-launched' time to job-summary for better reporting.

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