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zhihai xu commented on YARN-4227: --------------------------------- Currently I didn't find other code path except YARN-3675, which can cause this issue. bq. there are multiple allocations happening in between the removal of the node and the allocation. These allocations happen on other nodes. This won't help. We need find the log which shows the node removal and allocations on the same node. To confirm this issue, we need find the logs which show what node container_1436927988321_1307950_01_000012 was allocated on and when that node used by container_1436927988321_1307950_01_000012 was removed. > FairScheduler: RM quits processing expired container from a removed node > ------------------------------------------------------------------------ > > Key: YARN-4227 > URL: https://issues.apache.org/jira/browse/YARN-4227 > Project: Hadoop YARN > Issue Type: Bug > Components: fairscheduler > Affects Versions: 2.3.0, 2.5.0, 2.7.1 > Reporter: Wilfred Spiegelenburg > Assignee: Wilfred Spiegelenburg > Priority: Critical > Attachments: YARN-4227.2.patch, YARN-4227.3.patch, YARN-4227.4.patch, > YARN-4227.patch > > > Under some circumstances the node is removed before an expired container > event is processed causing the RM to exit: > {code} > 2015-10-04 21:14:01,063 INFO > org.apache.hadoop.yarn.util.AbstractLivelinessMonitor: > Expired:container_1436927988321_1307950_01_000012 Timed out after 600 secs > 2015-10-04 21:14:01,063 INFO > org.apache.hadoop.yarn.server.resourcemanager.rmcontainer.RMContainerImpl: > container_1436927988321_1307950_01_000012 Container Transitioned from > ACQUIRED to EXPIRED > 2015-10-04 21:14:01,063 INFO > org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSSchedulerApp: > Completed container: container_1436927988321_1307950_01_000012 in state: > EXPIRED event:EXPIRE > 2015-10-04 21:14:01,063 INFO > org.apache.hadoop.yarn.server.resourcemanager.RMAuditLogger: USER=system_op > OPERATION=AM Released Container TARGET=SchedulerApp RESULT=SUCCESS > APPID=application_1436927988321_1307950 > CONTAINERID=container_1436927988321_1307950_01_000012 > 2015-10-04 21:14:01,063 FATAL > org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Error in > handling event type CONTAINER_EXPIRED to the scheduler > java.lang.NullPointerException > at > org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.completedContainer(FairScheduler.java:849) > at > org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.handle(FairScheduler.java:1273) > at > org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.handle(FairScheduler.java:122) > at > org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:585) > at java.lang.Thread.run(Thread.java:745) > 2015-10-04 21:14:01,063 INFO > org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Exiting, bbye.. > {code} > The stack trace is from 2.3.0 but the same issue has been observed in 2.5.0 > and 2.6.0 by different customers. -- This message was sent by Atlassian JIRA (v6.3.4#6332)