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Hudson commented on MAPREDUCE-3126: ----------------------------------- Integrated in Hadoop-Hdfs-trunk #828 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk/828/]) MAPREDUCE-3126. Fixed a corner case in CapacityScheduler where headroom wasn't updated on changes to cluster size. acmurthy : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1182000 Files : * /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt * /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/CapacitySchedulerConfiguration.java * /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/LeafQueue.java * /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestApplicationLimits.java * /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestLeafQueue.java > mr job stuck because reducers using all slots and mapper isn't scheduled > ------------------------------------------------------------------------ > > Key: MAPREDUCE-3126 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-3126 > Project: Hadoop Map/Reduce > Issue Type: Bug > Components: mrv2 > Affects Versions: 0.23.0 > Reporter: Thomas Graves > Assignee: Arun C Murthy > Priority: Blocker > Fix For: 0.23.0 > > Attachments: MAPREDUCE-3126.patch > > > The command in MAPREDUCE-3124 run and this job got hung with 1 Map task > waiting for resources and 7 Reducers running (2 waiting). The mapper got > scheduler, then AM scheduled the reducers, the map task failed and tried to > start a new attempt but reducers were using all the slots. > I will try to add some more info from the logs. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira