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https://issues.apache.org/jira/browse/MAPREDUCE-4730?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13483822#comment-13483822
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Hudson commented on MAPREDUCE-4730:
-----------------------------------
Integrated in Hadoop-trunk-Commit #2925 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/2925/])
MAPREDUCE-4730. Fix Reducer's EventFetcher to scale the map-completion
requests slowly to avoid HADOOP-8942. Contributed by Jason Lowe. (Revision
1401941)
Result = SUCCESS
vinodkv :
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1401941
Files :
* /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
*
/hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/EventFetcher.java
*
/hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/Shuffle.java
*
/hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapreduce/task/reduce/TestEventFetcher.java
> AM crashes due to OOM while serving up map task completion events
> -----------------------------------------------------------------
>
> Key: MAPREDUCE-4730
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4730
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: applicationmaster, mrv2
> Affects Versions: 0.23.3
> Reporter: Jason Lowe
> Assignee: Jason Lowe
> Priority: Blocker
> Fix For: 2.0.3-alpha, 0.23.5
>
> Attachments: MAPREDUCE-4730.patch, MAPREDUCE-4730.patch,
> MAPREDUCE-4730.patch
>
>
> We're seeing a repeatable OOM crash in the AM for a task with around 30000
> maps and 3000 reducers. Details to follow.
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