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From "Arun C Murthy (JIRA)" <j...@apache.org>
Subject [jira] Updated: (MAPREDUCE-270) TaskTracker could send an out-of-band heartbeat when the last running map/reduce completes
Date Fri, 25 Sep 2009 08:40:16 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-270?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Arun C Murthy updated MAPREDUCE-270:
------------------------------------

    Attachment: MAPREDUCE-270.patch

Completed patch alongwith testcases.

> TaskTracker could send an out-of-band heartbeat when the last running map/reduce completes
> ------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-270
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-270
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>    Affects Versions: 0.21.0
>            Reporter: Arun C Murthy
>            Assignee: Arun C Murthy
>             Fix For: 0.22.0
>
>         Attachments: MAPREDUCE-270.patch, MAPREDUCE-270.patch, MAPREDUCE-270.patch, MAPREDUCE-270_yhadoop20.patch,
MAPREDUCE-270_yhadoop20.patch, MAPREDUCE-270_yhadoop20.patch
>
>
> Currently the TaskTracker strictly respects the heartbeat interval, this causes utilization
issues when all running tasks complete. We could send an out-of-band heartbeat in that case.

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