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From "Thomas Graves (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-1238) mapred metrics shows negative count of waiting maps and reduces
Date Tue, 10 Apr 2012 13:49:20 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-1238?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Thomas Graves updated MAPREDUCE-1238:
-------------------------------------

    Attachment: MAPREDUCE-1238-branch-1.patch

There is no unit test along with this, I don't see any easy way to add one since its a race
condition as to when the kill happens.  I've manually tested it and made sure the kill comes
in before init, during init, and after init and verified the waiting_* metrics correct after
each.
                
> mapred metrics shows negative count of waiting maps and reduces 
> ----------------------------------------------------------------
>
>                 Key: MAPREDUCE-1238
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1238
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: jobtracker
>            Reporter: Ramya Sunil
>            Assignee: Thomas Graves
>         Attachments: MAPREDUCE-1238-branch-1.patch, MAPREDUCE-1238-v0.20-1.patch
>
>
> Negative waiting_maps and waiting_reduces count is observed in the mapred metrics

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