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https://issues.apache.org/jira/browse/HADOOP-2208?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12542778
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Owen O'Malley commented on HADOOP-2208:
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Actually, I would also cap sending the counters to once every 10 seconds and
when the task changes state. That way, if you send an extra heartbeat to get a
new task, you won't send the counters.
> Reduce frequency of Counter updates in the task tracker status
> --------------------------------------------------------------
>
> Key: HADOOP-2208
> URL: https://issues.apache.org/jira/browse/HADOOP-2208
> Project: Hadoop
> Issue Type: Improvement
> Reporter: Amareshwari Sri Ramadasu
> Assignee: Amareshwari Sri Ramadasu
>
> Currently, We have counter updates from task tracker to job tracker on every
> heartbeat. Both counter name and the values are updated for every heartbeat.
> This can be improved by sending names and values for the first time and only
> the values after that.
> The frequency can be reduced by doing update only when the counters got
> changed.
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