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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-5891) Improved shuffle error handling across NM restarts
Date Tue, 26 Aug 2014 17:40:01 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5891?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14111009#comment-14111009
] 

Hadoop QA commented on MAPREDUCE-5891:
--------------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12664422/MAPREDUCE-5891.patch
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 1 new or modified
test files.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 javadoc{color}.  There were no new javadoc warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
2.0.3) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:green}+1 core tests{color}.  The patch passed unit tests in hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core.

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/4825//testReport/
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/4825//console

This message is automatically generated.

> Improved shuffle error handling across NM restarts
> --------------------------------------------------
>
>                 Key: MAPREDUCE-5891
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5891
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>    Affects Versions: 2.5.0
>            Reporter: Jason Lowe
>            Assignee: Junping Du
>         Attachments: MAPREDUCE-5891-demo.patch, MAPREDUCE-5891.patch
>
>
> To minimize the number of map fetch failures reported by reducers across an NM restart
it would be nice if reducers only reported a fetch failure after trying for at specified period
of time to retrieve the data.



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