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From "Arun C Murthy (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-1680) Add a metrics to track the number of heartbeats processed
Date Thu, 08 Apr 2010 01:39:36 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1680?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12854761#action_12854761
] 

Arun C Murthy commented on MAPREDUCE-1680:
------------------------------------------

Some feedback:

# We do not need both JobTrackerInstrumentation.heartbeat and JobTrackerInstrumentation.heartbeats(int),
just one of the apis should suffice - say JobTrackerInstrumentation.heartbeat(long increment).
# You'll need to get JobTrackerMetricsInst.doUpdates to send them out by incrementing a metric,
say "heartbeat"

> 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
>         Attachments: mapreduce-1680--2010-04-07.patch
>
>
> It would be nice to add a metrics that tracks the number of heartbeats processed by JT.

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