[ https://issues.apache.org/jira/browse/YARN-1444?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13931808#comment-13931808 ]
Arun C Murthy commented on YARN-1444: ------------------------------------- Looks like YARN-1591 is tracking TestResourceTrackerService. /cc [~vinodkv] I'll go ahead and commit this. > RM crashes when node resource request sent without corresponding off-switch > request > ----------------------------------------------------------------------------------- > > Key: YARN-1444 > URL: https://issues.apache.org/jira/browse/YARN-1444 > Project: Hadoop YARN > Issue Type: Bug > Components: client, resourcemanager > Reporter: Robert Grandl > Assignee: Wangda Tan > Priority: Blocker > Attachments: yarn-1444.ver1.patch, yarn-1444.ver2.patch > > > I have tried to force reducers to execute on certain nodes. What I did is I > changed for reduce tasks, the > RMContainerRequestor#addResourceRequest(req.priority, ResourceRequest.ANY, > req.capability) to RMContainerRequestor#addResourceRequest(req.priority, > HOST_NAME, req.capability). > However, this change lead to RM crashes when reducers needs to be assigned > with the following exception: > FATAL org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Error in > handling event type NODE_UPDATE to the scheduler > java.lang.NullPointerException > at > org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainers(LeafQueue.java:841) > at > org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.ParentQueue.assignContainersToChildQueues(ParentQueue.java:640) > at > org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.ParentQueue.assignContainers(ParentQueue.java:554) > at > org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.nodeUpdate(CapacityScheduler.java:695) > at > org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:739) > at > org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:86) > at > org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:549) > at java.lang.Thread.run(Thread.java:722) -- This message was sent by Atlassian JIRA (v6.2#6252)