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Introduce a defaultpreemption PostFilter plugin

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- Add a defaultpreemption PostFilter plugin
- Make g.Preempt() stateless
    - make g.Preempt() stateless
    - make g.getLowerPriorityNominatedPods() stateless
    - make g.processPreemptionWithExtenders() stateless
This commit is contained in:
Wei Huang
2020-06-17 14:15:14 -07:00
parent 1faf097f3f
commit 196056d7fe
12 changed files with 134 additions and 80 deletions
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2
pkg/scheduler/scheduler.go
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@@ -486,7 +486,7 @@ func (sched *Scheduler) scheduleOne(ctx context.Context) {
} else {
preemptionStartTime := time.Now()
// TODO(Huang-Wei): implement the preemption logic as a PostFilter plugin.
nominatedNode, _ = sched.Algorithm.Preempt(schedulingCycleCtx, prof, state, pod, fitError.FilteredNodesStatuses)
nominatedNode, _ = core.Preempt(schedulingCycleCtx, prof, state, pod, fitError.FilteredNodesStatuses)
metrics.PreemptionAttempts.Inc()
metrics.SchedulingAlgorithmPreemptionEvaluationDuration.Observe(metrics.SinceInSeconds(preemptionStartTime))
metrics.DeprecatedSchedulingDuration.WithLabelValues(metrics.PreemptionEvaluation).Observe(metrics.SinceInSeconds(preemptionStartTime))