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Merge pull request #100853 from yuzhiquan/scheduler-events

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Implement EnqueueExtensions interface in TopologySpreading scheduling
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Kubernetes Prow Robot 2021-04-14 13:15:10 -07:00 committed by GitHub
commit d09d1ea6cb
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1 changed files with 19 additions and 0 deletions
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19
pkg/scheduler/framework/plugins/podtopologyspread/plugin.go
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@ -65,6 +65,7 @@ var _ framework.PreFilterPlugin = &PodTopologySpread{}
var _ framework.FilterPlugin = &PodTopologySpread{}
var _ framework.PreScorePlugin = &PodTopologySpread{}
var _ framework.ScorePlugin = &PodTopologySpread{}
var _ framework.EnqueueExtensions = &PodTopologySpread{}
const (
// Name is the name of the plugin used in the plugin registry and configurations.
@ -119,3 +120,21 @@ func (pl *PodTopologySpread) setListers(factory informers.SharedInformerFactory)
pl.replicaSets = factory.Apps().V1().ReplicaSets().Lister()
pl.statefulSets = factory.Apps().V1().StatefulSets().Lister()
}
// EventsToRegister returns the possible events that may make a Pod
// failed by this plugin schedulable.
func (pl *PodTopologySpread) EventsToRegister() []framework.ClusterEvent {
return []framework.ClusterEvent{
// All ActionType includes the following events:
// - Add. An unschedulable Pod may fail due to violating topology spread constraints,
// adding an assigned Pod may make it schedulable.
// - Update. Updating on an existing Pod's labels (e.g., removal) may make
// an unschedulable Pod schedulable.
// - Delete. An unschedulable Pod may fail due to violating an existing Pod's topology spread constraints,
// deleting an existing Pod may make it schedulable.
{Resource: framework.Pod, ActionType: framework.All},
// Node add|delete|updateLabel maybe lead an topology key changed,
// and make these pod in scheduling schedulable or unschedulable.
{Resource: framework.Node, ActionType: framework.Add | framework.Delete | framework.UpdateNodeLabel},
}
}