Merge pull request #53647 from wenlxie/githubupstream.master.fixinterpodantiaffinity

Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

fix inter-pod anti-affinity issue

This is used to fix:
https://github.com/kubernetes/kubernetes/issues/50813

plugin/pkg/scheduler/algorithm/predicates/predicates.go

@@ -120,7 +120,7 @@ func (c *CachedNodeInfo) GetNodeInfo(id string) (*v1.Node, error) {
 	node, err := c.Get(id)
 
 	if apierrors.IsNotFound(err) {
-		return nil, fmt.Errorf("node '%v' not found", id)
+		return nil, err
 	}
 
 	if err != nil {
@@ -1214,6 +1214,10 @@ func (c *PodAffinityChecker) getMatchingAntiAffinityTerms(pod *v1.Pod, allPods [
 		if affinity != nil && affinity.PodAntiAffinity != nil {
 			existingPodNode, err := c.info.GetNodeInfo(existingPod.Spec.NodeName)
 			if err != nil {
+				if apierrors.IsNotFound(err) {
+					glog.Errorf("Node not found, %v", existingPod.Spec.NodeName)
+					continue
+				}
 				return nil, err
 			}
 			existingPodMatchingTerms, err := getMatchingAntiAffinityTermsOfExistingPod(pod, existingPod, existingPodNode)