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From "Arun C Murthy (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-4366) mapred metrics shows negative count of waiting maps and reduces
Date Fri, 17 May 2013 08:31:22 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4366?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13660472#comment-13660472
] 

Arun C Murthy commented on MAPREDUCE-4366:
------------------------------------------

{quote}
JIP.jobtracker metrics are borked - a bigger bug, sigh. These aren't updated ala JIP.queueMetrics
for task launch & fail/completion.
Another thing to fix?
{quote}

Arguably, that's an equally nasty bug if not worse. No? Sigh!
                
> mapred metrics shows negative count of waiting maps and reduces
> ---------------------------------------------------------------
>
>                 Key: MAPREDUCE-4366
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4366
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: jobtracker
>    Affects Versions: 1.0.2
>            Reporter: Thomas Graves
>            Assignee: Sandy Ryza
>         Attachments: MAPREDUCE-4366-branch-1-1.patch, MAPREDUCE-4366-branch-1.patch
>
>
> Negative waiting_maps and waiting_reduces count is observed in the mapred metrics.  MAPREDUCE-1238
partially fixed this but it appears there is still issues as we are seeing it, but not as
bad.

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