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https://issues.apache.org/jira/browse/MAPREDUCE-5891?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14140549#comment-14140549
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Hudson commented on MAPREDUCE-5891:
-----------------------------------

FAILURE: Integrated in Hadoop-Hdfs-trunk #1876 (See 
[https://builds.apache.org/job/Hadoop-Hdfs-trunk/1876/])
MAPREDUCE-5891. Improved shuffle error handling across NM restarts. Contributed 
by Junping Du (jlowe: rev 2c3da25fd718b3a9c1ed67f05b577975ae613f4e)
* 
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/resources/mapred-default.xml
* 
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/MRJobConfig.java
* 
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapreduce/task/reduce/TestFetcher.java
* 
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/ShuffleSchedulerImpl.java
* 
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/Fetcher.java
* hadoop-mapreduce-project/CHANGES.txt


> 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
>             Fix For: 2.6.0
>
>         Attachments: MAPREDUCE-5891-demo.patch, MAPREDUCE-5891-v2.patch, 
> MAPREDUCE-5891-v3.patch, MAPREDUCE-5891-v4.patch, MAPREDUCE-5891-v5.patch, 
> MAPREDUCE-5891-v6.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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