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From "Chris Douglas (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-1413) Improve logging of progress/errors in the job and task trackers
Date Tue, 16 Feb 2010 07:10:27 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1413?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12834105#action_12834105
] 

Chris Douglas commented on MAPREDUCE-1413:
------------------------------------------

That seems tautological to me: if one's logger is configured to not print the exception, then
it is unavailable in the logs. But as a practical accommodation, I see your point. OK.

Instead of defining {{toString()}} for the TaskTracker, could this just print the relevant
information in offerService? Or are you using that in the service lifecycle branch somehow?

> Improve logging of progress/errors in the job and task trackers
> ---------------------------------------------------------------
>
>                 Key: MAPREDUCE-1413
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1413
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: tasktracker
>    Affects Versions: 0.22.0
>            Reporter: Steve Loughran
>            Assignee: Steve Loughran
>            Priority: Minor
>             Fix For: 0.22.0
>
>         Attachments: MAPREDUCE-1413.patch
>
>
> I have code that improves the logging of the trackers as they start stop and fail, through
> # More logging of events
> # including exception strings and stacks when things go wrong
> People's whose JTs and TTs aren't behaving may appreciate this

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