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Hudson commented on MAPREDUCE-5027: ----------------------------------- Integrated in Hadoop-trunk-Commit #3421 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/3421/]) MAPREDUCE-5027. Shuffle does not limit number of outstanding connections (Robert Parker via jeagles) (Revision 1453098) Result = SUCCESS jeagles : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1453098 Files : * /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt * /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/resources/mapred-default.xml * /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-shuffle/src/main/java/org/apache/hadoop/mapred/ShuffleHandler.java * /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-shuffle/src/test/java/org/apache/hadoop/mapred/TestShuffleHandler.java > Shuffle does not limit number of outstanding connections > -------------------------------------------------------- > > Key: MAPREDUCE-5027 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-5027 > Project: Hadoop Map/Reduce > Issue Type: Bug > Affects Versions: 2.0.3-alpha, 0.23.5 > Reporter: Jason Lowe > Assignee: Robert Parker > Fix For: 3.0.0, 0.23.7, 2.0.4-beta > > Attachments: MAPREDUCE-5027-2.patch, MAPREDUCE-5027-3.patch, > MAPREDUCE-5027-4.patch, MAPREDUCE-5027-b023-2.patch, > MAPREDUCE-5027-b023.patch, MAPREDUCE-5027.patch, MAPREDUCE-5027.patch > > > The ShuffleHandler does not have any configurable limits to the number of > outstanding connections allowed. Therefore a node with many map outputs and > many reducers in the cluster trying to fetch those outputs can exhaust a > nodemanager out of file descriptors. -- 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