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https://issues.apache.org/jira/browse/YARN-9925?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Prabhu Joseph updated YARN-9925:
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Release Note: Currently, CapacityScheduler does not allow two queues with
same name irrespective of hierarchy or position. For example, root.a.a1 and
root.b.a1 are not allowed. root.a.b.c and root.a.d.b.e are not allowed.
> CapacitySchedulerQueueManager allows unsupported Queue hierarchy
> ----------------------------------------------------------------
>
> Key: YARN-9925
> URL: https://issues.apache.org/jira/browse/YARN-9925
> Project: Hadoop YARN
> Issue Type: Bug
> Components: capacityscheduler
> Affects Versions: 3.3.0
> Reporter: Prabhu Joseph
> Assignee: Prabhu Joseph
> Priority: Major
> Attachments: YARN-9925-001.patch, YARN-9925-002.patch,
> YARN-9925-003.patch, YARN-9925-004.patch, YARN-9925-005.patch
>
>
> CapacitySchedulerQueueManager allows unsupported Queue hierarchy. When
> creating a queue with same name as an existing parent queue name - it has to
> fail with below.
> {code:java}
> Caused by: java.io.IOException: A is moved from:root.A to:root.B.A after
> refresh, which is not allowed.Caused by: java.io.IOException: A is moved
> from:root.A to:root.B.A after refresh, which is not allowed. at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacitySchedulerQueueManager.validateQueueHierarchy(CapacitySchedulerQueueManager.java:335)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacitySchedulerQueueManager.reinitializeQueues(CapacitySchedulerQueueManager.java:180)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.reinitializeQueues(CapacityScheduler.java:762)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacityScheduler.reinitialize(CapacityScheduler.java:473)
> ... 70 more
> {code}
> In Some cases, the error is not thrown while creating the queue but thrown at
> submission of job "Failed to submit application_1571677375269_0002 to YARN :
> Application application_1571677375269_0002 submitted by user : systest to
> non-leaf queue : B"
> Below scenarios are allowed but it should not
> {code:java}
> It allows root.A.A1.B when root.B.B1 already exists.
>
> 1. Add root.A
> 2. Add root.A.A1
> 3. Add root.B
> 4. Add root.B.B1
> 5. Allows Add of root.A.A1.B
> It allows two root queues:
>
> 1. Add root.A
> 2. Add root.B
> 3. Add root.A.A1
> 4. Allows Add of root.A.A1.root
>
> {code}
> Below scenario is handled properly:
> {code:java}
> It does not allow root.B.A when root.A.A1 already exists.
>
> 1. Add root.A
> 2. Add root.B
> 3. Add root.A.A1
> 4. Does not Allow Add of root.B.A
> {code}
> This error handling has to be consistent in all scenarios.
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