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https://issues.apache.org/jira/browse/MAPREDUCE-284?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12755566#action_12755566
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Hudson commented on MAPREDUCE-284:
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Integrated in Hadoop-Mapreduce-trunk-Commit #39 (See
[http://hudson.zones.apache.org/hudson/job/Hadoop-Mapreduce-trunk-Commit/39/])
> Improvements to RPC between Child and TaskTracker
> -------------------------------------------------
>
> Key: MAPREDUCE-284
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-284
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Reporter: Arun C Murthy
> Assignee: Ravi Gummadi
> Fix For: 0.21.0
>
> Attachments: MR-284.patch, MR-284.v1.patch, MR-284.v2.patch
>
>
> We could improve the RPC between the Child and TaskTracker:
> * Set ping interval lower by default to 5s
> * Disable nagle's algorithm (tcp no-delay)
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