[YARN-8025] UsersManangers#getComputedResourceLimitForActiveUsers throws NPE due to preComputedActiveUserLimit is empty

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.2.0
• Fix Version/s: 2.10.0, 3.2.0, 3.1.1, 3.0.3
• Component/s: yarn
• Hadoop Flags: Reviewed
• Assignee: Tao Yang
• Reporter: Jiandan Yang
• Created: 12/Mar/18 10:17
• Updated: 23/Aug/19 17:04
• Resolved: 07/May/18 03:44

Description

UsersManangers#getComputedResourceLimitForActiveUsers throws NPE when I run SLS.
preComputedActiveUserLimit is not put any element in the code.

java.lang.NullPointerException
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.UsersManager.getComputedResourceLimitForActiveUsers(UsersManager.java:511)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.getResourceLimitForActiveUsers(LeafQueue.java:1576)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.computeUserLimitAndSetHeadroom(LeafQueue.java:1517)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.assignContainers(LeafQueue.java:1190)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.ParentQueue.assignContainersToChildQueues(ParentQueue.java:824)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.ParentQueue.assignContainers(ParentQueue.java:630)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.allocateOrReserveNewContainers(CapacityScheduler.java:1834)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.allocateOrReserveNewContainers(CapacityScheduler.java:1802)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.allocateContainersOnMultiNodes(CapacityScheduler.java:1925)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.allocateContainersToNode(CapacityScheduler.java:1946)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.scheduleBasedOnNodeLabels(CapacityScheduler.java:732)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler$AsyncScheduleThread.run(CapacityScheduler.java:774)