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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-284) Improvements to RPC between Child and TaskTracker
Date Thu, 06 Aug 2009 21:57:14 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-284?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12740270#action_12740270
] 

Hadoop QA commented on MAPREDUCE-284:
-------------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12415328/MR-284.patch
  against trunk revision 801517.

    +1 @author.  The patch does not contain any @author tags.

    -1 tests included.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 findbugs.  The patch does not introduce any new Findbugs warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit
warnings.

    +1 core tests.  The patch passed core unit tests.

    -1 contrib tests.  The patch failed contrib unit tests.

Test results: http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-vesta.apache.org/446/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-vesta.apache.org/446/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-vesta.apache.org/446/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-vesta.apache.org/446/console

This message is automatically generated.

> 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
>         Attachments: MR-284.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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