// should register an empty PodUpdate operation
		podUpdate := CreatePodUpdate(kubetypes.SET, TestSource)
		channel <- podUpdate
		expectPodUpdate(t, ch, CreatePodUpdate(test.op, TestSource))

		// should ignore following empty sets
		podUpdate = CreatePodUpdate(kubetypes.SET, TestSource)
		channel <- podUpdate
		podUpdate = CreatePodUpdate(kubetypes.ADD, TestSource, CreateValidPod("foo", "new"))

}

func (tc *Controller) handlePodUpdate(ctx context.Context, podUpdate podUpdateItem) {
	pod, err := tc.podLister.Pods(podUpdate.podNamespace).Get(podUpdate.podName)
	logger := klog.FromContext(ctx)
	if err != nil {
		if apierrors.IsNotFound(err) {
			// Delete
			podNamespacedName := types.NamespacedName{Namespace: podUpdate.podNamespace, Name: podUpdate.podName}
			logger.V(4).Info("Noticed pod deletion", "pod", podNamespacedName)

	}

	s.pods[source] = pods

	adds = &kubetypes.PodUpdate{Op: kubetypes.ADD, Pods: copyPods(addPods), Source: source}
	updates = &kubetypes.PodUpdate{Op: kubetypes.UPDATE, Pods: copyPods(updatePods), Source: source}
	deletes = &kubetypes.PodUpdate{Op: kubetypes.DELETE, Pods: copyPods(deletePods), Source: source}
	removes = &kubetypes.PodUpdate{Op: kubetypes.REMOVE, Pods: copyPods(removePods), Source: source}

	podInformer.Informer().AddEventHandler(kcache.ResourceEventHandlerFuncs{
		AddFunc: func(obj interface{}) {
			adc.podAdd(logger, obj)
		},
		UpdateFunc: func(oldObj, newObj interface{}) {
			adc.podUpdate(logger, oldObj, newObj)
		},
		DeleteFunc: func(obj interface{}) {
			adc.podDelete(logger, obj)
		},
	})

	// This custom indexer will index pods by its PVC keys. Then we don't need

func (f *Fit) EventsToRegister() []framework.ClusterEventWithHint {
	podActionType := framework.Delete
	if f.enableInPlacePodVerticalScaling {
		// If InPlacePodVerticalScaling (KEP 1287) is enabled, then PodUpdate event should be registered
		// for this plugin since a Pod update may free up resources that make other Pods schedulable.
		podActionType |= framework.Update
	}
	return []framework.ClusterEventWithHint{