Merge pull request #3305 from oliviassss/fix-ep

fix the race condition in pod cache and endpoint resolver

Author: k8s-ci-robot

controllers/ingress/eventhandlers/ingress_events.go

@@ -44,7 +44,7 @@ func (h *enqueueRequestsForIngressEvent) Update(e event.UpdateEvent, queue workq
 	//	1. Ingress annotation updates
 	//	2. Ingress spec updates
 	//	3. Ingress deletion
-	if ! equality.Semantic.DeepEqual(ingOld.ResourceVersion, ingNew.ResourceVersion) {
+	if !equality.Semantic.DeepEqual(ingOld.ResourceVersion, ingNew.ResourceVersion) {
 		if equality.Semantic.DeepEqual(ingOld.Annotations, ingNew.Annotations) &&
 			equality.Semantic.DeepEqual(ingOld.Spec, ingNew.Spec) &&
 			equality.Semantic.DeepEqual(ingOld.DeletionTimestamp.IsZero(), ingNew.DeletionTimestamp.IsZero()) {

controllers/service/eventhandlers/service_events.go

@@ -39,7 +39,7 @@ func (h *enqueueRequestsForServiceEvent) Update(e event.UpdateEvent, queue workq
 	oldSvc := e.ObjectOld.(*corev1.Service)
 	newSvc := e.ObjectNew.(*corev1.Service)
 
-	if ! equality.Semantic.DeepEqual(oldSvc.ResourceVersion, newSvc.ResourceVersion) {
+	if !equality.Semantic.DeepEqual(oldSvc.ResourceVersion, newSvc.ResourceVersion) {
 		if equality.Semantic.DeepEqual(oldSvc.Annotations, newSvc.Annotations) &&
 			equality.Semantic.DeepEqual(oldSvc.Spec, newSvc.Spec) &&
 			equality.Semantic.DeepEqual(oldSvc.DeletionTimestamp.IsZero(), newSvc.DeletionTimestamp.IsZero()) {

pkg/backend/endpoint_resolver.go

@@ -166,7 +166,8 @@ func (r *defaultEndpointResolver) resolvePodEndpointsWithEndpointsData(ctx conte
 					return nil, false, err
 				}
 				if !exists {
-					r.logger.Info("ignore pod Endpoint with non-existent podInfo", "podKey", podKey.String())
+					r.logger.Info("the pod in endpoint is not found in pod cache yet, will keep retrying", "podKey", podKey.String())
+					containsPotentialReadyEndpoints = true
 					continue
 				}
 				podEndpoint := buildPodEndpoint(pod, epAddr, epPort)

pkg/backend/endpoint_resolver_test.go

@@ -1240,7 +1240,7 @@ func Test_defaultEndpointResolver_ResolvePodEndpoints(t *testing.T) {
 					Pod:  pod4,
 				},
 			},
-			wantContainsPotentialReadyEndpoints: false,
+			wantContainsPotentialReadyEndpoints: true,
 		},
 		{
 			name: "service not found",