Change:
logger.Error(err, "Scheduler cache AddPod failed", "pod", klog.KObj(pod)) } <del> sched.SchedulingQueue.AssignedPodAdded(logger, pod) </del> <ins> // SchedulingQueue.AssignedPodAdded has a problem: // It internally pre-filters Pods to move to activeQ, // while taking only in-tree plugins into consideration. // Consequently, if custom plugins that subscribes Pod/Add events reject Pods, // those Pods will never be requeued to activeQ by an assigned Pod related events, // and they may be stuck in unschedulableQ. // // Here we use MoveAllToActiveOrBackoffQueue only when QueueingHint is enabled. // (We cannot switch to MoveAllToActiveOrBackoffQueue right away because of throughput concern.) if utilfeature.DefaultFeatureGate.Enabled(features.SchedulerQueueingHints) { sched.SchedulingQueue.MoveAllToActiveOrBackoffQueue(logger, queue.AssignedPodAdd, nil, pod, nil) } else { sched.SchedulingQueue.AssignedPodAdded(logger, pod) } </ins> } func (sched *Scheduler) updatePodInCache(oldObj, newObj interface{}) {

Discussion:
/sig scheduling /kind cleanup Ref: A test helper function creates a goroutine to pop a Pod from the scheduling queue. This goroutine never stops until the scheduling queue is ed or is somehow stopped for waiting for a new Pod. Ideally, when reaching timeout, we should somehow stop from waiting for Pod to be enqueued to activeQ.
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We can replace this function with and it should be enough? I think we no longer need to maintain this function.
Not enough, the core of this problem is that we cannot cancel once we start . Even if we change function to whatever, we will hit this problem. So, we need:
Or, alternatively and much more easily, maybe we can just replace all with and remove . kills the entire test if reaching timeout and we could care less about leaked goroutine then.
I don't think we can do this. From the test case: The expected behavior of this case is that we receive a timeout to make sure no pods are to . So, reaching timeout is acutally a success. So, I think: option 1: using sth like this in : option2: do sth in the test code This part is where it confused me. The current code is fine as we closed schdulerQueue after called , and after I think there is no test case using this this function anymore(seeems that you refactored the test), so are we trying to solve a potential problem?
Oh, then we can just remove NextPod in the PR.
/assign
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/sig scheduling /kind bug AssignedPodAdded(): AssignedPodUpdated(): When assigned Pods are created/updated, cluster events (Pod/Add or Pod/Update) should be delivered for all plugins that subscribe those events. But, actually pre-filters Pods to receive those events based on Pods' affinity and . - meaning only PodAffinity/NodeResourceFit receive them actually. The problem here is similar to - in in-tree plugins, PodAffinity, PodTopologySpread and NodeResourceFit subscribe Pod add and/or update events. And, Pods rejected by PodTopologySpread will never be requeued to activeQ by Pod-related events. The same happens for custom plugins registering pod add and/or update events. All Pods will get chances to get back to activeQ by Pod-related events. Run ↓ in No response <detailsmaster </details<details</details<details</details<details</details<details</details<details</details
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/assign
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The Kubernetes project currently lacks enough contributors to adequately respond to all issues. This bot triages un-triaged issues according to the following rules: After 90d of inactivity, is applied After 30d of inactivity since was applied, is applied After 30d of inactivity since was applied, the issue is closed You can: Mark this issue as fresh with Close this issue with Offer to help out with [Issue Triage][1] Please send feedback to sig-contributor-experience at . /lifecycle stale [1]:
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