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Hudson commented on YARN-2171: ------------------------------ FAILURE: Integrated in Hadoop-Yarn-trunk #595 (See [https://builds.apache.org/job/Hadoop-Yarn-trunk/595/]) YARN-2171. Improved CapacityScheduling to not lock on nodemanager-count when AMs heartbeat in. Contributed by Jason Lowe. (vinodkv: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1605616) * /hadoop/common/trunk/hadoop-yarn-project/CHANGES.txt * /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/CapacityScheduler.java * /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestCapacityScheduler.java > AMs block on the CapacityScheduler lock during allocate() > --------------------------------------------------------- > > Key: YARN-2171 > URL: https://issues.apache.org/jira/browse/YARN-2171 > Project: Hadoop YARN > Issue Type: Bug > Components: capacityscheduler > Affects Versions: 0.23.10, 2.4.0 > Reporter: Jason Lowe > Assignee: Jason Lowe > Priority: Critical > Fix For: 2.5.0 > > Attachments: YARN-2171.patch, YARN-2171v2.patch > > > When AMs heartbeat into the RM via the allocate() call they are blocking on > the CapacityScheduler lock when trying to get the number of nodes in the > cluster via getNumClusterNodes. -- This message was sent by Atlassian JIRA (v6.2#6252)