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https://issues.apache.org/jira/browse/HADOOP-1900?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12542232
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Owen O'Malley commented on HADOOP-1900:
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I really really don't think the complexity is justified. If we have too many
levels of back offs and retries it will be very hard to control the
performance. I'd propose
{code}
heartbeatPeriodSeconds = min(2, slaveNodes / 10);
{code}
> 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
> Attachments: 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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