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https://issues.apache.org/jira/browse/MAPREDUCE-1680?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dick King updated MAPREDUCE-1680:
---------------------------------

    Attachment: mapreduce-1680--2010-04-29.patch

OK, this adds a clause to one of the test cases in 
{{TestJobTrackerInstrumentation}}, for heartbeats.


> Add a metrics to track the number of heartbeats processed
> ---------------------------------------------------------
>
>                 Key: MAPREDUCE-1680
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1680
>             Project: Hadoop Map/Reduce
>          Issue Type: New Feature
>            Reporter: Hong Tang
>            Assignee: Dick King
>             Fix For: 0.22.0
>
>         Attachments: mapreduce-1680--2010-04-07.patch, 
> mapreduce-1680--2010-04-08-for-trunk.patch, mapreduce-1680--2010-04-08.patch, 
> mapreduce-1680--2010-04-29.patch
>
>
> It would be nice to add a metrics that tracks the number of heartbeats 
> processed by JT.

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