controller: set minReadySeconds in deployment's replica sets

* Estimate available pods for a deployment by using minReadySeconds on
the replica set.
* Stop requeueing deployments on pod events, superseded by following the
replica set status.
* Cleanup redundant deployment utilities

pkg/controller/deployment/deployment_controller.go

@@ -113,11 +113,6 @@ func NewDeploymentController(dInformer informers.DeploymentInformer, rsInformer
 		UpdateFunc: dc.updateReplicaSet,
 		DeleteFunc: dc.deleteReplicaSet,
 	})
-	podInformer.Informer().AddEventHandler(cache.ResourceEventHandlerFuncs{
-		AddFunc:    dc.addPod,
-		UpdateFunc: dc.updatePod,
-		DeleteFunc: dc.deletePod,
-	})
 
 	dc.syncHandler = dc.syncDeployment
 	dc.dLister = dInformer.Lister()
@@ -260,83 +255,6 @@ func (dc *DeploymentController) deleteReplicaSet(obj interface{}) {
 	}
 }
 
-// getDeploymentForPod returns the deployment that manages the given Pod.
-// If there are multiple deployments for a given Pod, only return the oldest one.
-func (dc *DeploymentController) getDeploymentForPod(pod *api.Pod) *extensions.Deployment {
-	deployments, err := dc.dLister.GetDeploymentsForPod(pod)
-	if err != nil || len(deployments) == 0 {
-		glog.V(4).Infof("Error: %v. No deployment found for Pod %v, deployment controller will avoid syncing.", err, pod.Name)
-		return nil
-	}
-
-	if len(deployments) > 1 {
-		sort.Sort(util.BySelectorLastUpdateTime(deployments))
-		glog.Errorf("user error! more than one deployment is selecting pod %s/%s with labels: %#v, returning %s/%s", pod.Namespace, pod.Name, pod.Labels, deployments[0].Namespace, deployments[0].Name)
-	}
-	return deployments[0]
-}
-
-// When a pod is created, ensure its controller syncs
-func (dc *DeploymentController) addPod(obj interface{}) {
-	pod, ok := obj.(*api.Pod)
-	if !ok {
-		return
-	}
-	glog.V(4).Infof("Pod %s created: %#v.", pod.Name, pod)
-	if d := dc.getDeploymentForPod(pod); d != nil {
-		dc.enqueueDeployment(d)
-	}
-}
-
-// updatePod figures out what deployment(s) manage the ReplicaSet that manages the Pod when the Pod
-// is updated and wake them up. If anything of the Pods have changed, we need to awaken both
-// the old and new deployments. old and cur must be *api.Pod types.
-func (dc *DeploymentController) updatePod(old, cur interface{}) {
-	curPod := cur.(*api.Pod)
-	oldPod := old.(*api.Pod)
-	if curPod.ResourceVersion == oldPod.ResourceVersion {
-		// Periodic resync will send update events for all known pods.
-		// Two different versions of the same pod will always have different RVs.
-		return
-	}
-	glog.V(4).Infof("Pod %s updated %#v -> %#v.", curPod.Name, oldPod, curPod)
-	if d := dc.getDeploymentForPod(curPod); d != nil {
-		dc.enqueueDeployment(d)
-	}
-	if !api.Semantic.DeepEqual(oldPod, curPod) {
-		if oldD := dc.getDeploymentForPod(oldPod); oldD != nil {
-			dc.enqueueDeployment(oldD)
-		}
-	}
-}
-
-// When a pod is deleted, ensure its controller syncs.
-// obj could be an *api.Pod, or a DeletionFinalStateUnknown marker item.
-func (dc *DeploymentController) deletePod(obj interface{}) {
-	pod, ok := obj.(*api.Pod)
-	// When a delete is dropped, the relist will notice a pod in the store not
-	// in the list, leading to the insertion of a tombstone object which contains
-	// the deleted key/value. Note that this value might be stale. If the pod
-	// changed labels the new ReplicaSet will not be woken up till the periodic
-	// resync.
-	if !ok {
-		tombstone, ok := obj.(cache.DeletedFinalStateUnknown)
-		if !ok {
-			glog.Errorf("Couldn't get object from tombstone %#v", obj)
-			return
-		}
-		pod, ok = tombstone.Obj.(*api.Pod)
-		if !ok {
-			glog.Errorf("Tombstone contained object that is not a pod %#v", obj)
-			return
-		}
-	}
-	glog.V(4).Infof("Pod %s deleted: %#v.", pod.Name, pod)
-	if d := dc.getDeploymentForPod(pod); d != nil {
-		dc.enqueueDeployment(d)
-	}
-}
-
 func (dc *DeploymentController) enqueueDeployment(deployment *extensions.Deployment) {
 	key, err := controller.KeyFunc(deployment)
 	if err != nil {

pkg/controller/deployment/recreate.go

@@ -42,7 +42,7 @@ func (dc *DeploymentController) rolloutRecreate(deployment *extensions.Deploymen
 	}
 	if scaledDown {
 		// Update DeploymentStatus
-		return dc.updateDeploymentStatus(allRSs, newRS, deployment)
+		return dc.syncDeploymentStatus(allRSs, newRS, deployment)
 	}
 
 	// Wait for all old replica set to scale down to zero.
@@ -67,7 +67,7 @@ func (dc *DeploymentController) rolloutRecreate(deployment *extensions.Deploymen
 	}
 	if scaledUp {
 		// Update DeploymentStatus
-		return dc.updateDeploymentStatus(allRSs, newRS, deployment)
+		return dc.syncDeploymentStatus(allRSs, newRS, deployment)
 	}
 
 	dc.cleanupDeployment(oldRSs, deployment)

pkg/controller/deployment/rolling.go

@@ -42,7 +42,7 @@ func (dc *DeploymentController) rolloutRolling(deployment *extensions.Deployment
 	}
 	if scaledUp {
 		// Update DeploymentStatus
-		return dc.updateDeploymentStatus(allRSs, newRS, deployment)
+		return dc.syncDeploymentStatus(allRSs, newRS, deployment)
 	}
 
 	// Scale down, if we can.
@@ -52,7 +52,7 @@ func (dc *DeploymentController) rolloutRolling(deployment *extensions.Deployment
 	}
 	if scaledDown {
 		// Update DeploymentStatus
-		return dc.updateDeploymentStatus(allRSs, newRS, deployment)
+		return dc.syncDeploymentStatus(allRSs, newRS, deployment)
 	}
 
 	dc.cleanupDeployment(oldRSs, deployment)
@@ -86,14 +86,8 @@ func (dc *DeploymentController) reconcileOldReplicaSets(allRSs []*extensions.Rep
 		return false, nil
 	}
 
-	minReadySeconds := deployment.Spec.MinReadySeconds
 	allPodsCount := deploymentutil.GetReplicaCountForReplicaSets(allRSs)
-	// TODO: use dc.getAvailablePodsForReplicaSets instead
+	glog.V(4).Infof("New replica set %s/%s has %d available pods.", newRS.Namespace, newRS.Name, newRS.Status.AvailableReplicas)
-	newRSAvailablePodCount, err := deploymentutil.GetAvailablePodsForReplicaSets(dc.client, deployment, []*extensions.ReplicaSet{newRS}, minReadySeconds)
-	if err != nil {
-		return false, fmt.Errorf("could not find available pods: %v", err)
-	}
-	glog.V(4).Infof("New RS %s/%s has %d available pods.", newRS.Namespace, newRS.Name, newRSAvailablePodCount)
 	maxUnavailable := deploymentutil.MaxUnavailable(*deployment)
 
 	// Check if we can scale down. We can scale down in the following 2 cases:
@@ -127,7 +121,7 @@ func (dc *DeploymentController) reconcileOldReplicaSets(allRSs []*extensions.Rep
 	// * However, newRSPodsUnavailable would also be 0, so the 2 old replica sets could be scaled down by 5 (13 - 8 - 0), which would then
 	// allow the new replica set to be scaled up by 5.
 	minAvailable := deployment.Spec.Replicas - maxUnavailable
-	newRSUnavailablePodCount := newRS.Spec.Replicas - newRSAvailablePodCount
+	newRSUnavailablePodCount := newRS.Spec.Replicas - newRS.Status.AvailableReplicas
 	maxScaledDown := allPodsCount - minAvailable - newRSUnavailablePodCount
 	if maxScaledDown <= 0 {
 		return false, nil
@@ -135,7 +129,7 @@ func (dc *DeploymentController) reconcileOldReplicaSets(allRSs []*extensions.Rep
 
 	// Clean up unhealthy replicas first, otherwise unhealthy replicas will block deployment
 	// and cause timeout. See https://github.com/kubernetes/kubernetes/issues/16737
-	oldRSs, cleanupCount, err := dc.cleanupUnhealthyReplicas(oldRSs, deployment, deployment.Spec.MinReadySeconds, maxScaledDown)
+	oldRSs, cleanupCount, err := dc.cleanupUnhealthyReplicas(oldRSs, deployment, maxScaledDown)
 	if err != nil {
 		return false, nil
 	}
@@ -154,7 +148,7 @@ func (dc *DeploymentController) reconcileOldReplicaSets(allRSs []*extensions.Rep
 }
 
 // cleanupUnhealthyReplicas will scale down old replica sets with unhealthy replicas, so that all unhealthy replicas will be deleted.
-func (dc *DeploymentController) cleanupUnhealthyReplicas(oldRSs []*extensions.ReplicaSet, deployment *extensions.Deployment, minReadySeconds, maxCleanupCount int32) ([]*extensions.ReplicaSet, int32, error) {
+func (dc *DeploymentController) cleanupUnhealthyReplicas(oldRSs []*extensions.ReplicaSet, deployment *extensions.Deployment, maxCleanupCount int32) ([]*extensions.ReplicaSet, int32, error) {
 	sort.Sort(controller.ReplicaSetsByCreationTimestamp(oldRSs))
 	// Safely scale down all old replica sets with unhealthy replicas. Replica set will sort the pods in the order
 	// such that not-ready < ready, unscheduled < scheduled, and pending < running. This ensures that unhealthy replicas will
@@ -168,18 +162,13 @@ func (dc *DeploymentController) cleanupUnhealthyReplicas(oldRSs []*extensions.Re
 			// cannot scale down this replica set.
 			continue
 		}
-		// TODO: use dc.getAvailablePodsForReplicaSets instead
+		glog.V(4).Infof("Found %d available pods in old RS %s/%s", targetRS.Status.AvailableReplicas, targetRS.Namespace, targetRS.Name)
-		availablePodCount, err := deploymentutil.GetAvailablePodsForReplicaSets(dc.client, deployment, []*extensions.ReplicaSet{targetRS}, minReadySeconds)
+		if targetRS.Spec.Replicas == targetRS.Status.AvailableReplicas {
-		if err != nil {
-			return nil, totalScaledDown, fmt.Errorf("could not find available pods: %v", err)
-		}
-		glog.V(4).Infof("Found %d available pods in old RS %s/%s", availablePodCount, targetRS.Namespace, targetRS.Name)
-		if targetRS.Spec.Replicas == availablePodCount {
 			// no unhealthy replicas found, no scaling required.
 			continue
 		}
 
-		scaledDownCount := int32(integer.IntMin(int(maxCleanupCount-totalScaledDown), int(targetRS.Spec.Replicas-availablePodCount)))
+		scaledDownCount := int32(integer.IntMin(int(maxCleanupCount-totalScaledDown), int(targetRS.Spec.Replicas-targetRS.Status.AvailableReplicas)))
 		newReplicasCount := targetRS.Spec.Replicas - scaledDownCount
 		if newReplicasCount > targetRS.Spec.Replicas {
 			return nil, 0, fmt.Errorf("when cleaning up unhealthy replicas, got invalid request to scale down %s/%s %d -> %d", targetRS.Namespace, targetRS.Name, targetRS.Spec.Replicas, newReplicasCount)
@@ -201,13 +190,8 @@ func (dc *DeploymentController) scaleDownOldReplicaSetsForRollingUpdate(allRSs [
 
 	// Check if we can scale down.
 	minAvailable := deployment.Spec.Replicas - maxUnavailable
-	minReadySeconds := deployment.Spec.MinReadySeconds
+	// Find the number of available pods.
-	// Find the number of ready pods.
+	availablePodCount := deploymentutil.GetAvailableReplicaCountForReplicaSets(allRSs)
-	// TODO: use dc.getAvailablePodsForReplicaSets instead
-	availablePodCount, err := deploymentutil.GetAvailablePodsForReplicaSets(dc.client, deployment, allRSs, minReadySeconds)
-	if err != nil {
-		return 0, fmt.Errorf("could not find available pods: %v", err)
-	}
 	if availablePodCount <= minAvailable {
 		// Cannot scale down.
 		return 0, nil
@@ -233,7 +217,7 @@ func (dc *DeploymentController) scaleDownOldReplicaSetsForRollingUpdate(allRSs [
 		if newReplicasCount > targetRS.Spec.Replicas {
 			return 0, fmt.Errorf("when scaling down old RS, got invalid request to scale down %s/%s %d -> %d", targetRS.Namespace, targetRS.Name, targetRS.Spec.Replicas, newReplicasCount)
 		}
-		_, _, err = dc.scaleReplicaSetAndRecordEvent(targetRS, newReplicasCount, deployment)
+		_, _, err := dc.scaleReplicaSetAndRecordEvent(targetRS, newReplicasCount, deployment)
 		if err != nil {
 			return totalScaledDown, err
 		}

pkg/controller/deployment/rolling_test.go

@@ -17,15 +17,12 @@ limitations under the License.
 package deployment
 
 import (
-	"fmt"
 	"testing"
 
-	"k8s.io/kubernetes/pkg/api"
 	exp "k8s.io/kubernetes/pkg/apis/extensions"
 	"k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset/fake"
 	"k8s.io/kubernetes/pkg/client/record"
 	"k8s.io/kubernetes/pkg/client/testing/core"
-	"k8s.io/kubernetes/pkg/runtime"
 	"k8s.io/kubernetes/pkg/util/intstr"
 )
 
@@ -187,84 +184,14 @@ func TestDeploymentController_reconcileOldReplicaSets(t *testing.T) {
 		newSelector := map[string]string{"foo": "new"}
 		oldSelector := map[string]string{"foo": "old"}
 		newRS := rs("foo-new", test.newReplicas, newSelector, noTimestamp)
+		newRS.Status.AvailableReplicas = int32(test.readyPodsFromNewRS)
 		oldRS := rs("foo-old", test.oldReplicas, oldSelector, noTimestamp)
+		oldRS.Status.AvailableReplicas = int32(test.readyPodsFromOldRS)
 		oldRSs := []*exp.ReplicaSet{oldRS}
 		allRSs := []*exp.ReplicaSet{oldRS, newRS}
 		maxSurge := intstr.FromInt(0)
 		deployment := newDeployment("foo", test.deploymentReplicas, nil, &maxSurge, &test.maxUnavailable, newSelector)
 		fakeClientset := fake.Clientset{}
-		fakeClientset.AddReactor("list", "pods", func(action core.Action) (handled bool, ret runtime.Object, err error) {
-			switch action.(type) {
-			case core.ListAction:
-				podList := &api.PodList{}
-				for podIndex := 0; podIndex < test.readyPodsFromOldRS; podIndex++ {
-					podList.Items = append(podList.Items, api.Pod{
-						ObjectMeta: api.ObjectMeta{
-							Name:   fmt.Sprintf("%s-oldReadyPod-%d", oldRS.Name, podIndex),
-							Labels: oldSelector,
-						},
-						Status: api.PodStatus{
-							Conditions: []api.PodCondition{
-								{
-									Type:   api.PodReady,
-									Status: api.ConditionTrue,
-								},
-							},
-						},
-					})
-				}
-				for podIndex := 0; podIndex < test.oldReplicas-test.readyPodsFromOldRS; podIndex++ {
-					podList.Items = append(podList.Items, api.Pod{
-						ObjectMeta: api.ObjectMeta{
-							Name:   fmt.Sprintf("%s-oldUnhealthyPod-%d", oldRS.Name, podIndex),
-							Labels: oldSelector,
-						},
-						Status: api.PodStatus{
-							Conditions: []api.PodCondition{
-								{
-									Type:   api.PodReady,
-									Status: api.ConditionFalse,
-								},
-							},
-						},
-					})
-				}
-				for podIndex := 0; podIndex < test.readyPodsFromNewRS; podIndex++ {
-					podList.Items = append(podList.Items, api.Pod{
-						ObjectMeta: api.ObjectMeta{
-							Name:   fmt.Sprintf("%s-newReadyPod-%d", oldRS.Name, podIndex),
-							Labels: newSelector,
-						},
-						Status: api.PodStatus{
-							Conditions: []api.PodCondition{
-								{
-									Type:   api.PodReady,
-									Status: api.ConditionTrue,
-								},
-							},
-						},
-					})
-				}
-				for podIndex := 0; podIndex < test.oldReplicas-test.readyPodsFromOldRS; podIndex++ {
-					podList.Items = append(podList.Items, api.Pod{
-						ObjectMeta: api.ObjectMeta{
-							Name:   fmt.Sprintf("%s-newUnhealthyPod-%d", oldRS.Name, podIndex),
-							Labels: newSelector,
-						},
-						Status: api.PodStatus{
-							Conditions: []api.PodCondition{
-								{
-									Type:   api.PodReady,
-									Status: api.ConditionFalse,
-								},
-							},
-						},
-					})
-				}
-				return true, podList, nil
-			}
-			return false, nil, nil
-		})
 		controller := &DeploymentController{
 			client:        &fakeClientset,
 			eventRecorder: &record.FakeRecorder{},
@@ -327,55 +254,18 @@ func TestDeploymentController_cleanupUnhealthyReplicas(t *testing.T) {
 	for i, test := range tests {
 		t.Logf("executing scenario %d", i)
 		oldRS := rs("foo-v2", test.oldReplicas, nil, noTimestamp)
+		oldRS.Status.AvailableReplicas = int32(test.readyPods)
 		oldRSs := []*exp.ReplicaSet{oldRS}
 		maxSurge := intstr.FromInt(2)
 		maxUnavailable := intstr.FromInt(2)
 		deployment := newDeployment("foo", 10, nil, &maxSurge, &maxUnavailable, nil)
 		fakeClientset := fake.Clientset{}
-		fakeClientset.AddReactor("list", "pods", func(action core.Action) (handled bool, ret runtime.Object, err error) {
-			switch action.(type) {
-			case core.ListAction:
-				podList := &api.PodList{}
-				for podIndex := 0; podIndex < test.readyPods; podIndex++ {
-					podList.Items = append(podList.Items, api.Pod{
-						ObjectMeta: api.ObjectMeta{
-							Name: fmt.Sprintf("%s-readyPod-%d", oldRS.Name, podIndex),
-						},
-						Status: api.PodStatus{
-							Conditions: []api.PodCondition{
-								{
-									Type:   api.PodReady,
-									Status: api.ConditionTrue,
-								},
-							},
-						},
-					})
-				}
-				for podIndex := 0; podIndex < test.unHealthyPods; podIndex++ {
-					podList.Items = append(podList.Items, api.Pod{
-						ObjectMeta: api.ObjectMeta{
-							Name: fmt.Sprintf("%s-unHealthyPod-%d", oldRS.Name, podIndex),
-						},
-						Status: api.PodStatus{
-							Conditions: []api.PodCondition{
-								{
-									Type:   api.PodReady,
-									Status: api.ConditionFalse,
-								},
-							},
-						},
-					})
-				}
-				return true, podList, nil
-			}
-			return false, nil, nil
-		})
 
 		controller := &DeploymentController{
 			client:        &fakeClientset,
 			eventRecorder: &record.FakeRecorder{},
 		}
-		_, cleanupCount, err := controller.cleanupUnhealthyReplicas(oldRSs, deployment, 0, int32(test.maxCleanupCount))
+		_, cleanupCount, err := controller.cleanupUnhealthyReplicas(oldRSs, deployment, int32(test.maxCleanupCount))
 		if err != nil {
 			t.Errorf("unexpected error: %v", err)
 			continue
@@ -439,35 +329,12 @@ func TestDeploymentController_scaleDownOldReplicaSetsForRollingUpdate(t *testing
 		test := tests[i]
 		t.Logf("executing scenario %d", i)
 		oldRS := rs("foo-v2", test.oldReplicas, nil, noTimestamp)
+		oldRS.Status.AvailableReplicas = int32(test.readyPods)
 		allRSs := []*exp.ReplicaSet{oldRS}
 		oldRSs := []*exp.ReplicaSet{oldRS}
 		maxSurge := intstr.FromInt(0)
 		deployment := newDeployment("foo", test.deploymentReplicas, nil, &maxSurge, &test.maxUnavailable, map[string]string{"foo": "bar"})
 		fakeClientset := fake.Clientset{}
-		fakeClientset.AddReactor("list", "pods", func(action core.Action) (handled bool, ret runtime.Object, err error) {
-			switch action.(type) {
-			case core.ListAction:
-				podList := &api.PodList{}
-				for podIndex := 0; podIndex < test.readyPods; podIndex++ {
-					podList.Items = append(podList.Items, api.Pod{
-						ObjectMeta: api.ObjectMeta{
-							Name:   fmt.Sprintf("%s-pod-%d", oldRS.Name, podIndex),
-							Labels: map[string]string{"foo": "bar"},
-						},
-						Status: api.PodStatus{
-							Conditions: []api.PodCondition{
-								{
-									Type:   api.PodReady,
-									Status: api.ConditionTrue,
-								},
-							},
-						},
-					})
-				}
-				return true, podList, nil
-			}
-			return false, nil, nil
-		})
 		controller := &DeploymentController{
 			client:        &fakeClientset,
 			eventRecorder: &record.FakeRecorder{},

pkg/controller/deployment/sync.go

@@ -259,10 +259,11 @@ func (dc *DeploymentController) getNewReplicaSet(deployment *extensions.Deployme
 		rsCopy := objCopy.(*extensions.ReplicaSet)
 
 		// Set existing new replica set's annotation
-		if deploymentutil.SetNewReplicaSetAnnotations(deployment, rsCopy, newRevision, true) {
+		annotationsUpdated := deploymentutil.SetNewReplicaSetAnnotations(deployment, rsCopy, newRevision, true)
-			if rsCopy, err = dc.client.Extensions().ReplicaSets(rsCopy.Namespace).Update(rsCopy); err != nil {
+		minReadySecondsNeedsUpdate := rsCopy.Spec.MinReadySeconds != deployment.Spec.MinReadySeconds
-				return nil, err
+		if annotationsUpdated || minReadySecondsNeedsUpdate {
-			}
+			rsCopy.Spec.MinReadySeconds = deployment.Spec.MinReadySeconds
+			return dc.client.Extensions().ReplicaSets(rsCopy.ObjectMeta.Namespace).Update(rsCopy)
 		}
 
 		updateConditions := deploymentutil.SetDeploymentRevision(deployment, newRevision)
@@ -294,9 +295,10 @@ func (dc *DeploymentController) getNewReplicaSet(deployment *extensions.Deployme
 			Namespace: namespace,
 		},
 		Spec: extensions.ReplicaSetSpec{
-			Replicas: 0,
+			Replicas:        0,
-			Selector: newRSSelector,
+			MinReadySeconds: deployment.Spec.MinReadySeconds,
-			Template: newRSTemplate,
+			Selector:        newRSSelector,
+			Template:        newRSTemplate,
 		},
 	}
 	allRSs := append(oldRSs, &newRS)
@@ -478,21 +480,20 @@ func (dc *DeploymentController) cleanupDeployment(oldRSs []*extensions.ReplicaSe
 
 // syncDeploymentStatus checks if the status is up-to-date and sync it if necessary
 func (dc *DeploymentController) syncDeploymentStatus(allRSs []*extensions.ReplicaSet, newRS *extensions.ReplicaSet, d *extensions.Deployment) error {
-	newStatus, err := dc.calculateStatus(allRSs, newRS, d)
+	newStatus := dc.calculateStatus(allRSs, newRS, d)
-	if err != nil {
+
-		return err
+	if reflect.DeepEqual(d.Status, newStatus) {
+		return nil
 	}
-	if !reflect.DeepEqual(d.Status, newStatus) {
+
-		return dc.updateDeploymentStatus(allRSs, newRS, d)
+	newDeployment := d
-	}
+	newDeployment.Status = newStatus
-	return nil
+	_, err := dc.client.Extensions().Deployments(newDeployment.Namespace).UpdateStatus(newDeployment)
+	return err
 }
 
-func (dc *DeploymentController) calculateStatus(allRSs []*extensions.ReplicaSet, newRS *extensions.ReplicaSet, deployment *extensions.Deployment) (extensions.DeploymentStatus, error) {
+func (dc *DeploymentController) calculateStatus(allRSs []*extensions.ReplicaSet, newRS *extensions.ReplicaSet, deployment *extensions.Deployment) extensions.DeploymentStatus {
-	availableReplicas, err := dc.getAvailablePodsForReplicaSets(deployment, allRSs)
+	availableReplicas := deploymentutil.GetAvailableReplicaCountForReplicaSets(allRSs)
-	if err != nil {
-		return deployment.Status, fmt.Errorf("failed to count available pods: %v", err)
-	}
 	totalReplicas := deploymentutil.GetReplicaCountForReplicaSets(allRSs)
 
 	return extensions.DeploymentStatus{
@@ -502,26 +503,7 @@ func (dc *DeploymentController) calculateStatus(allRSs []*extensions.ReplicaSet,
 		UpdatedReplicas:     deploymentutil.GetActualReplicaCountForReplicaSets([]*extensions.ReplicaSet{newRS}),
 		AvailableReplicas:   availableReplicas,
 		UnavailableReplicas: totalReplicas - availableReplicas,
-	}, nil
-}
-
-func (dc *DeploymentController) getAvailablePodsForReplicaSets(deployment *extensions.Deployment, rss []*extensions.ReplicaSet) (int32, error) {
-	podList, err := dc.listPods(deployment)
-	if err != nil {
-		return 0, err
 	}
-	return deploymentutil.CountAvailablePodsForReplicaSets(podList, rss, deployment.Spec.MinReadySeconds)
-}
-
-func (dc *DeploymentController) updateDeploymentStatus(allRSs []*extensions.ReplicaSet, newRS *extensions.ReplicaSet, deployment *extensions.Deployment) error {
-	newStatus, err := dc.calculateStatus(allRSs, newRS, deployment)
-	if err != nil {
-		return err
-	}
-	newDeployment := deployment
-	newDeployment.Status = newStatus
-	_, err = dc.client.Extensions().Deployments(deployment.Namespace).UpdateStatus(newDeployment)
-	return err
 }
 
 // isScalingEvent checks whether the provided deployment has been updated with a scaling event

pkg/controller/deployment/util/deployment_util.go

@@ -39,7 +39,6 @@ import (
 	intstrutil "k8s.io/kubernetes/pkg/util/intstr"
 	labelsutil "k8s.io/kubernetes/pkg/util/labels"
 	podutil "k8s.io/kubernetes/pkg/util/pod"
-	rsutil "k8s.io/kubernetes/pkg/util/replicaset"
 	"k8s.io/kubernetes/pkg/util/wait"
 )
 
@@ -636,65 +635,35 @@ func SetFromReplicaSetTemplate(deployment *extensions.Deployment, template api.P
 
 // GetReplicaCountForReplicaSets returns the sum of Replicas of the given replica sets.
 func GetReplicaCountForReplicaSets(replicaSets []*extensions.ReplicaSet) int32 {
-	totalReplicaCount := int32(0)
+	totalReplicas := int32(0)
 	for _, rs := range replicaSets {
 		if rs != nil {
-			totalReplicaCount += rs.Spec.Replicas
+			totalReplicas += rs.Spec.Replicas
 		}
 	}
-	return totalReplicaCount
+	return totalReplicas
 }
 
 // GetActualReplicaCountForReplicaSets returns the sum of actual replicas of the given replica sets.
 func GetActualReplicaCountForReplicaSets(replicaSets []*extensions.ReplicaSet) int32 {
-	totalReplicaCount := int32(0)
+	totalActualReplicas := int32(0)
 	for _, rs := range replicaSets {
 		if rs != nil {
-			totalReplicaCount += rs.Status.Replicas
+			totalActualReplicas += rs.Status.Replicas
 		}
 	}
-	return totalReplicaCount
+	return totalActualReplicas
 }
 
-// GetAvailablePodsForReplicaSets returns the number of available pods (listed from clientset) corresponding to the given replica sets.
+// GetAvailableReplicaCountForReplicaSets returns the number of available pods corresponding to the given replica sets.
-func GetAvailablePodsForReplicaSets(c clientset.Interface, deployment *extensions.Deployment, rss []*extensions.ReplicaSet, minReadySeconds int32) (int32, error) {
+func GetAvailableReplicaCountForReplicaSets(replicaSets []*extensions.ReplicaSet) int32 {
-	podList, err := listPods(deployment, c)
+	totalAvailableReplicas := int32(0)
-	if err != nil {
+	for _, rs := range replicaSets {
-		return 0, err
+		if rs != nil {
-	}
+			totalAvailableReplicas += rs.Status.AvailableReplicas
-	return CountAvailablePodsForReplicaSets(podList, rss, minReadySeconds)
-}
-
-// CountAvailablePodsForReplicaSets returns the number of available pods corresponding to the given pod list and replica sets.
-// Note that the input pod list should be the pods targeted by the deployment of input replica sets.
-func CountAvailablePodsForReplicaSets(podList *api.PodList, rss []*extensions.ReplicaSet, minReadySeconds int32) (int32, error) {
-	rsPods, err := filterPodsMatchingReplicaSets(rss, podList)
-	if err != nil {
-		return 0, err
-	}
-	return countAvailablePods(rsPods, minReadySeconds), nil
-}
-
-// GetAvailablePodsForDeployment returns the number of available pods (listed from clientset) corresponding to the given deployment.
-func GetAvailablePodsForDeployment(c clientset.Interface, deployment *extensions.Deployment) (int32, error) {
-	podList, err := listPods(deployment, c)
-	if err != nil {
-		return 0, err
-	}
-	return countAvailablePods(podList.Items, deployment.Spec.MinReadySeconds), nil
-}
-
-func countAvailablePods(pods []api.Pod, minReadySeconds int32) int32 {
-	availablePodCount := int32(0)
-	for _, pod := range pods {
-		// TODO: Make the time.Now() as argument to allow unit test this.
-		// FIXME: avoid using time.Now
-		if IsPodAvailable(&pod, minReadySeconds, time.Now()) {
-			glog.V(4).Infof("Pod %s/%s is available.", pod.Namespace, pod.Name)
-			availablePodCount++
 		}
 	}
-	return availablePodCount
+	return totalAvailableReplicas
 }
 
 // IsPodAvailable return true if the pod is available.
@@ -722,22 +691,6 @@ func IsPodAvailable(pod *api.Pod, minReadySeconds int32, now time.Time) bool {
 	return false
 }
 
-// filterPodsMatchingReplicaSets filters the given pod list and only return the ones targeted by the input replicasets
-func filterPodsMatchingReplicaSets(replicaSets []*extensions.ReplicaSet, podList *api.PodList) ([]api.Pod, error) {
-	rsPods := []api.Pod{}
-	for _, rs := range replicaSets {
-		matchingFunc, err := rsutil.MatchingPodsFunc(rs)
-		if err != nil {
-			return nil, err
-		}
-		if matchingFunc == nil {
-			continue
-		}
-		rsPods = append(rsPods, podutil.Filter(podList, matchingFunc)...)
-	}
-	return rsPods, nil
-}
-
 // IsRollingUpdate returns true if the strategy type is a rolling update.
 func IsRollingUpdate(deployment *extensions.Deployment) bool {
 	return deployment.Spec.Strategy.Type == extensions.RollingUpdateDeploymentStrategyType

pkg/controller/deployment/util/deployment_util_test.go

@@ -99,40 +99,6 @@ func newPod(now time.Time, ready bool, beforeSec int) api.Pod {
 	}
 }
 
-func TestCountAvailablePods(t *testing.T) {
-	now := time.Now()
-	tests := []struct {
-		pods            []api.Pod
-		minReadySeconds int
-		expected        int
-	}{
-		{
-			[]api.Pod{
-				newPod(now, true, 0),
-				newPod(now, true, 2),
-				newPod(now, false, 1),
-			},
-			1,
-			1,
-		},
-		{
-			[]api.Pod{
-				newPod(now, true, 2),
-				newPod(now, true, 11),
-				newPod(now, true, 5),
-			},
-			10,
-			1,
-		},
-	}
-
-	for _, test := range tests {
-		if count := countAvailablePods(test.pods, int32(test.minReadySeconds)); int(count) != test.expected {
-			t.Errorf("Pods = %#v, minReadySeconds = %d, expected %d, got %d", test.pods, test.minReadySeconds, test.expected, count)
-		}
-	}
-}
-
 // generatePodFromRS creates a pod, with the input ReplicaSet's selector and its template
 func generatePodFromRS(rs extensions.ReplicaSet) api.Pod {
 	return api.Pod{

test/e2e/framework/util.go

@@ -3507,10 +3507,6 @@ func WaitForDeploymentStatusValid(c clientset.Interface, d *extensions.Deploymen
 			}
 		}
 		totalCreated := deploymentutil.GetReplicaCountForReplicaSets(allRSs)
-		totalAvailable, err := deploymentutil.GetAvailablePodsForDeployment(c, deployment)
-		if err != nil {
-			return false, err
-		}
 		maxCreated := deployment.Spec.Replicas + deploymentutil.MaxSurge(*deployment)
 		if totalCreated > maxCreated {
 			reason = fmt.Sprintf("total pods created: %d, more than the max allowed: %d", totalCreated, maxCreated)
@@ -3518,8 +3514,8 @@ func WaitForDeploymentStatusValid(c clientset.Interface, d *extensions.Deploymen
 			return false, nil
 		}
 		minAvailable := deploymentutil.MinAvailable(deployment)
-		if totalAvailable < minAvailable {
+		if deployment.Status.AvailableReplicas < minAvailable {
-			reason = fmt.Sprintf("total pods available: %d, less than the min required: %d", totalAvailable, minAvailable)
+			reason = fmt.Sprintf("total pods available: %d, less than the min required: %d", deployment.Status.AvailableReplicas, minAvailable)
 			Logf(reason)
 			return false, nil
 		}
@@ -3568,10 +3564,6 @@ func WaitForDeploymentStatus(c clientset.Interface, d *extensions.Deployment) er
 			}
 		}
 		totalCreated := deploymentutil.GetReplicaCountForReplicaSets(allRSs)
-		totalAvailable, err := deploymentutil.GetAvailablePodsForDeployment(c, deployment)
-		if err != nil {
-			return false, err
-		}
 		maxCreated := deployment.Spec.Replicas + deploymentutil.MaxSurge(*deployment)
 		if totalCreated > maxCreated {
 			logReplicaSetsOfDeployment(deployment, allOldRSs, newRS)
@@ -3579,10 +3571,10 @@ func WaitForDeploymentStatus(c clientset.Interface, d *extensions.Deployment) er
 			return false, fmt.Errorf("total pods created: %d, more than the max allowed: %d", totalCreated, maxCreated)
 		}
 		minAvailable := deploymentutil.MinAvailable(deployment)
-		if totalAvailable < minAvailable {
+		if deployment.Status.AvailableReplicas < minAvailable {
 			logReplicaSetsOfDeployment(deployment, allOldRSs, newRS)
 			logPodsOfDeployment(c, deployment)
-			return false, fmt.Errorf("total pods available: %d, less than the min required: %d", totalAvailable, minAvailable)
+			return false, fmt.Errorf("total pods available: %d, less than the min required: %d", deployment.Status.AvailableReplicas, minAvailable)
 		}
 
 		// When the deployment status and its underlying resources reach the desired state, we're done