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https://issues.apache.org/jira/browse/MAPREDUCE-5533?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13787212#comment-13787212
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Hudson commented on MAPREDUCE-5533:
-----------------------------------
SUCCESS: Integrated in Hadoop-Hdfs-trunk #1543 (See
[https://builds.apache.org/job/Hadoop-Hdfs-trunk/1543/])
MAPREDUCE-5533. Fixed MR speculation code to track any TaskAttempts that aren't
heart-beating for a while, so that we can aggressively speculate instead of
waiting for task-timeout. Contributed by Xuan Gong. (vinodkv:
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1529229)
* /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
*
/hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/speculate/DefaultSpeculator.java
*
/hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/MRApp.java
*
/hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/v2/TestSpeculativeExecutionWithMRApp.java
> Speculative execution does not function for reduce
> --------------------------------------------------
>
> Key: MAPREDUCE-5533
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5533
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: applicationmaster
> Reporter: Tassapol Athiapinya
> Assignee: Xuan Gong
> Fix For: 2.1.2-beta
>
> Attachments: MAPREDUCE-5533.1.patch, MAPREDUCE-5533.2.patch,
> MAPREDUCE-5533.3.patch, MAPREDUCE-5533.4.patch, MAPREDUCE-5533.5.patch,
> MAPREDUCE-5533.6.patch
>
>
> We have sort job where reduce attempt does not send heartbeat in timely
> manner to application master. The AM should kick off another attempt to let
> job succeeds. What we find is the job fails and there is no speculation
> happening.
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