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Hudson commented on MAPREDUCE-4730: ----------------------------------- Integrated in Hadoop-Yarn-trunk #16 (See [https://builds.apache.org/job/Hadoop-Yarn-trunk/16/]) 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. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira