J.Andreina created YARN-1184: -------------------------------- Summary: ClassCastException is thrown during preemption When a huge job is submitted to a queue B whose resources is used by a job in queueA Key: YARN-1184 URL: https://issues.apache.org/jira/browse/YARN-1184 Project: Hadoop YARN Issue Type: Bug Components: resourcemanager Affects Versions: 2.1.0-beta Reporter: J.Andreina
preemption is enabled. Queue = a,b a capacity = 30% b capacity = 70% Step 1: Assign a big job to queue a ( so that job_a will utilize some resources from queue b) Step 2: Assigne a big job to queue b. Following exception is thrown at Resource Manager {noformat} 2013-09-12 10:42:32,535 ERROR [SchedulingMonitor (ProportionalCapacityPreemptionPolicy)] yarn.YarnUncaughtExceptionHandler (YarnUncaughtExceptionHandler.java:uncaughtException(68)) - Thread Thread[SchedulingMonitor (ProportionalCapacityPreemptionPolicy),5,main] threw an Exception. java.lang.ClassCastException: java.util.Collections$UnmodifiableSet cannot be cast to java.util.NavigableSet at org.apache.hadoop.yarn.server.resourcemanager.monitor.capacity.ProportionalCapacityPreemptionPolicy.getContainersToPreempt(ProportionalCapacityPreemptionPolicy.java:403) at org.apache.hadoop.yarn.server.resourcemanager.monitor.capacity.ProportionalCapacityPreemptionPolicy.containerBasedPreemptOrKill(ProportionalCapacityPreemptionPolicy.java:202) at org.apache.hadoop.yarn.server.resourcemanager.monitor.capacity.ProportionalCapacityPreemptionPolicy.editSchedule(ProportionalCapacityPreemptionPolicy.java:173) at org.apache.hadoop.yarn.server.resourcemanager.monitor.SchedulingMonitor.invokePolicy(SchedulingMonitor.java:72) at org.apache.hadoop.yarn.server.resourcemanager.monitor.SchedulingMonitor$PreemptionChecker.run(SchedulingMonitor.java:82) at java.lang.Thread.run(Thread.java:662) {noformat} -- 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