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From "Vinod Kumar Vavilapalli (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-3692) yarn-resourcemanager out and log files can get big
Date Thu, 19 Jan 2012 23:54:40 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3692?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13189504#comment-13189504
] 

Vinod Kumar Vavilapalli commented on MAPREDUCE-3692:
----------------------------------------------------

Tom/Eli,

This patch changes the log-level for all transitions in MR AM and resource manager which to
me is a serious concern particularly in the context of debugging. Granted we do log a little
too much, but the correct fix should be to selectively downgrade so that important transitions
like node/container/task failures are not missed. After the current patch, I think debugging
on cluster becomes very painful.

What I think we should do is to remove the logging from all handle methods, and selectively
log in the individual transitions that we think are important.

Either I can reopen this ticket or you can revert this patch. Sorry for coming in late.
                
> yarn-resourcemanager out and log files can get big
> --------------------------------------------------
>
>                 Key: MAPREDUCE-3692
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3692
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: mrv2
>            Reporter: Eli Collins
>            Assignee: Eli Collins
>             Fix For: 0.23.1
>
>         Attachments: mapreduce-3692.txt
>
>
> I'm seeing 8gb resourcemanager out files and big log files, seeing lots of repeated logs
(eg every rpc call or event) looks like we're being too verbose in  a couple of places.

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