Hi community,
I am trying to isolate my users from each other in YARN (CDH 5.15.1).
For that, I am using a queue root.users.<username>, in which each user is directed. The queues for users are not created, but will be created on submission - they are undeclared.
To guarantee resources, I would like to active FairShare Preemption on all user queues, although they are undeclared. Enabling Preemption on the root.users Queue did achieve any preemption.
I have set:
- Preemption is activated globally
- Fair Share Preemption Threshold of root.users is set to 0.5
- Fair Share Preemption Timeout of root.users is set to 5
- Preemptable of root.users is set to true
In my test, the cluster resources are fully allocated to root.users.alice. Then bob submits a job to root.users.bob but does not receive any resources.
Best,
Benjamin