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https://issues.apache.org/jira/browse/HADOOP-1900?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12547138
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Devaraj Das commented on HADOOP-1900:
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In the patch, I see that TaskTracker.initialize is no longer synchronized. Any
reason why we should remove the synchronization for the method as part of this
patch? Also, should we use int for doing the serialization/deserialization of
the heartbeatInterval as opposed to long. Also, the sleep in getMapEvents
should be elsewhere since we don't want to put a RPC handler to sleep (the
handler will invoke this method eventually). (Sorry for the late comment)
> the heartbeat and task event queries interval should be set dynamically by
> the JobTracker
> -----------------------------------------------------------------------------------------
>
> Key: HADOOP-1900
> URL: https://issues.apache.org/jira/browse/HADOOP-1900
> Project: Hadoop
> Issue Type: Improvement
> Components: mapred
> Reporter: Owen O'Malley
> Assignee: Amareshwari Sri Ramadasu
> Fix For: 0.16.0
>
> Attachments: patch-1900.txt, patch-1900.txt, patch-1900.txt,
> patch-1900.txt, patch-1900.txt
>
>
> The JobTracker should scale the intervals that the TaskTrackers use to
> contact it dynamically, based on how the busy it is and the size of the
> cluster.
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