[jira] [Created] (YARN-11584) [CS] Attempting to create Leaf Queue with empty shortname should fail without crashing RM

["Brian Goerlitz (Jira)" <ji...@apache.org>]

Brian Goerlitz created YARN-11584:
-------------------------------------

             Summary: [CS] Attempting to create Leaf Queue with empty shortname should fail without crashing RM
                 Key: YARN-11584
                 URL: https://issues.apache.org/jira/browse/YARN-11584
             Project: Hadoop YARN
          Issue Type: Bug
          Components: capacity scheduler
            Reporter: Brian Goerlitz
            Assignee: Brian Goerlitz


If an app submission results in attempting to auto-create a leaf queue with an empty short name, the app submission should be rejected without the RM crashing. Currently, the queue will be created, but the RM encounters a FATAL exception due to metrics collision.

For example, if an app is placed to 'root.' the RM will fail with the below.
{noformat}
2023-09-12 20:23:43,294 FATAL org.apache.hadoop.yarn.event.EventDispatcher: Error in handling event type APP_ADDED to the Event Dispatcher
org.apache.hadoop.metrics2.MetricsException: Metrics source QueueMetrics,q0=root already exists!
        at org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.newSourceName(DefaultMetricsSystem.java:152)
        at org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.sourceName(DefaultMetricsSystem.java:125)
        at org.apache.hadoop.metrics2.impl.MetricsSystemImpl.register(MetricsSystemImpl.java:229)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CSQueueMetrics.forQueue(CSQueueMetrics.java:309)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.AbstractCSQueue.<init>(AbstractCSQueue.java:147)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.AbstractLeafQueue.<init>(AbstractLeafQueue.java:148)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.LeafQueue.<init>(LeafQueue.java:42)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.ParentQueue.createNewQueue(ParentQueue.java:495)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.ParentQueue.addDynamicChildQueue(ParentQueue.java:563)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.ParentQueue.addDynamicLeafQueue(ParentQueue.java:517)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacitySchedulerQueueManager.createAutoQueue(CapacitySchedulerQueueManager.java:678)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacitySchedulerQueueManager.createQueue(CapacitySchedulerQueueManager.java:511)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.getOrCreateQueueFromPlacementContext(CapacityScheduler.java:898)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.addApplication(CapacityScheduler.java:962)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:1920)
        at org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.handle(CapacityScheduler.java:170)
        at org.apache.hadoop.yarn.event.EventDispatcher$EventProcessor.run(EventDispatcher.java:66)
        at java.base/java.lang.Thread.run(Thread.java:834)
{noformat}



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