[jira] [Created] (YUNIKORN-1650) Add toggle for adding default queue in admission controller

["Mit Desai (Jira)" <ji...@apache.org>]

Mit Desai created YUNIKORN-1650:
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             Summary: Add toggle for adding default queue in admission controller
                 Key: YUNIKORN-1650
                 URL: https://issues.apache.org/jira/browse/YUNIKORN-1650
             Project: Apache YuniKorn
          Issue Type: Bug
    Affects Versions: 1.2.0
            Reporter: Mit Desai
            Assignee: Mit Desai


If the queue name is not defined during the job submission, YuniKorn admission controller will add a default queue to the pod labels.

When _provided_ placement rule is defined, along with other placement rules, it is possible that only provided placement rule is executed and no other rule is exercised.

In the following scenario, when there are 3 placement rules defined,
placementrules:
        - name: provided
        - name: tag
        - name: fixed

The applications will be placed in the right queue, following the _provided_ rule if the queue is defined during job submission. If the queue is not defined during job submission, admission controller will add a default queue name. This will again trigger the provided rule as the queue name will be found in the pod labels during placement rules execution. As a result, _tag_ and _fixed_ rules will never be executed and all the apps that do not have a queue defined will end up getting placed in the default queue.

To solve this, we should have a toggle in the admission controller configs whether to add the default queue to or not. Whenever such placement rules are setup, admission controller should be configured to skip adding the default queue name.



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