[jira] [Created] (YUNIKORN-1951) The queues only set max resource shouldn't be eligible victim

["Wu hsuang zong (Jira)" <ji...@apache.org>]

Wu hsuang zong created YUNIKORN-1951:
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             Summary: The queues only set max resource shouldn't be eligible victim
                 Key: YUNIKORN-1951
                 URL: https://issues.apache.org/jira/browse/YUNIKORN-1951
             Project: Apache YuniKorn
          Issue Type: Bug
          Components: core - scheduler
            Reporter: Wu hsuang zong


The function findEligiblePreemptionVictims() is used to find preemption victims.
The code that determines the relationship between guaranteed and preemption victim is as follows:

{code:go}
guaranteed := resources.ComponentWiseMinPermissive(sq.GetActualGuaranteedResource(), sq.GetMaxResource())
if guaranteed.FitInMaxUndef(sq.GetAllocatedResource()) {
    return
}
{code}
When guaranteed is not set, the maximum configuration is used. In normal circumstances, this allows the FitInMaxUndef() condition to return true, preventing the queue from becoming a victim. However, the problem arises when the queue's maximum resources are set to {memory:200, pods:0}, and yet applications with {memory:100, pods:1} can still be allocated to the queue.
Which causing FitInMaxUndef() to always return false, thus considering the queue as a victim.



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