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From "Arun A K (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-4709) Counters that track max values
Date Fri, 25 Jan 2013 10:01:14 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4709?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13562567#comment-13562567
] 

Arun A K commented on MAPREDUCE-4709:
-------------------------------------

@Jeremy Lewi, 
Could you please elaborate on the problem with an example? 
                
> Counters that track max values
> ------------------------------
>
>                 Key: MAPREDUCE-4709
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4709
>             Project: Hadoop Map/Reduce
>          Issue Type: New Feature
>            Reporter: Jeremy Lewi
>            Priority: Minor
>
> A nice feature to help monitor MR jobs would be mapreduce counters that track the maximum
of some metric across all workers. These trackers would work just like regular counters except
it would track the max value of all arguments passed to the "increment" function as opposed
to summing them.

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