controller: adopt pods only when controller is not deleted

pkg/controller/replicaset/replica_set.go

@@ -577,15 +577,6 @@ func (rsc *ReplicaSetController) syncReplicaSet(key string) error {
 	}
 	rs := *obj.(*extensions.ReplicaSet)
 
-	// Check the expectations of the ReplicaSet before counting active pods, otherwise a new pod can sneak
-	// in and update the expectations after we've retrieved active pods from the store. If a new pod enters
-	// the store after we've checked the expectation, the ReplicaSet sync is just deferred till the next
-	// relist.
-	if err != nil {
-		utilruntime.HandleError(fmt.Errorf("Couldn't get key for ReplicaSet %#v: %v", rs, err))
-		// Explicitly return nil to avoid re-enqueue bad key
-		return nil
-	}
 	rsNeedsSync := rsc.expectations.SatisfiedExpectations(key)
 	selector, err := metav1.LabelSelectorAsSelector(rs.Spec.Selector)
 	if err != nil {
@@ -606,6 +597,8 @@ func (rsc *ReplicaSetController) syncReplicaSet(key string) error {
 		}
 		cm := controller.NewPodControllerRefManager(rsc.podControl, rs.ObjectMeta, selector, getRSKind())
 		matchesAndControlled, matchesNeedsController, controlledDoesNotMatch := cm.Classify(pods)
+		// Adopt pods only if this replica set is not going to be deleted.
+		if rs.DeletionTimestamp == nil {
 			for _, pod := range matchesNeedsController {
 				err := cm.AdoptPod(pod)
 				// continue to next pod if adoption fails.
@@ -618,6 +611,7 @@ func (rsc *ReplicaSetController) syncReplicaSet(key string) error {
 					matchesAndControlled = append(matchesAndControlled, pod)
 				}
 			}
+		}
 		filteredPods = matchesAndControlled
 		// remove the controllerRef for the pods that no longer have matching labels
 		var errlist []error

pkg/controller/replication/replication_controller.go

@@ -666,16 +666,8 @@ func (rm *ReplicationManager) syncReplicationController(key string) error {
 	}
 	rc := *obj.(*v1.ReplicationController)
 
-	// Check the expectations of the rc before counting active pods, otherwise a new pod can sneak in
-	// and update the expectations after we've retrieved active pods from the store. If a new pod enters
-	// the store after we've checked the expectation, the rc sync is just deferred till the next relist.
-	rcKey, err := controller.KeyFunc(&rc)
-	if err != nil {
-		glog.Errorf("Couldn't get key for replication controller %#v: %v", rc, err)
-		return err
-	}
 	trace.Step("ReplicationController restored")
-	rcNeedsSync := rm.expectations.SatisfiedExpectations(rcKey)
+	rcNeedsSync := rm.expectations.SatisfiedExpectations(key)
 	trace.Step("Expectations restored")
 
 	// NOTE: filteredPods are pointing to objects from cache - if you need to
@@ -693,6 +685,8 @@ func (rm *ReplicationManager) syncReplicationController(key string) error {
 		}
 		cm := controller.NewPodControllerRefManager(rm.podControl, rc.ObjectMeta, labels.Set(rc.Spec.Selector).AsSelectorPreValidated(), getRCKind())
 		matchesAndControlled, matchesNeedsController, controlledDoesNotMatch := cm.Classify(pods)
+		// Adopt pods only if this replication controller is not going to be deleted.
+		if rc.DeletionTimestamp == nil {
 			for _, pod := range matchesNeedsController {
 				err := cm.AdoptPod(pod)
 				// continue to next pod if adoption fails.
@@ -705,6 +699,7 @@ func (rm *ReplicationManager) syncReplicationController(key string) error {
 					matchesAndControlled = append(matchesAndControlled, pod)
 				}
 			}
+		}
 		filteredPods = matchesAndControlled
 		// remove the controllerRef for the pods that no longer have matching labels
 		var errlist []error