StatefulSet: Remove `pod.alpha.kubernetes.io/initialized` annotation.

pkg/controller/statefulset/stateful_set_control_test.go

@@ -85,7 +85,6 @@ func TestStatefulSetControl(t *testing.T) {
 		{ScalesDown, simpleSetFn},
 		{ReplacesPods, largeSetFn},
 		{RecreatesFailedPod, simpleSetFn},
-		{SetsInitAnnotation, simpleSetFn},
 		{CreatePodFailure, simpleSetFn},
 		{UpdatePodFailure, simpleSetFn},
 		{UpdateSetStatusFailure, simpleSetFn},
@@ -279,59 +278,6 @@ func RecreatesFailedPod(t *testing.T, set *apps.StatefulSet, invariants invarian
 	}
 }
 
-func SetsInitAnnotation(t *testing.T, set *apps.StatefulSet, invariants invariantFunc) {
-	client := fake.NewSimpleClientset(set)
-	spc, _, ssc, stop := setupController(client)
-	defer close(stop)
-
-	selector, err := metav1.LabelSelectorAsSelector(set.Spec.Selector)
-	if err != nil {
-		t.Error(err)
-	}
-	pods, err := spc.podsLister.Pods(set.Namespace).List(selector)
-	if err != nil {
-		t.Error(err)
-	}
-	if err = ssc.UpdateStatefulSet(set, pods); err != nil {
-		t.Errorf("Error updating StatefulSet %s", err)
-	}
-	if err = invariants(set, spc); err != nil {
-		t.Error(err)
-	}
-	if pods, err = spc.setPodRunning(set, 0); err != nil {
-		t.Error(err)
-	}
-	if pods, err = spc.setPodReady(set, 0); err != nil {
-		t.Error(err)
-	}
-	if pods, err = spc.setPodInitStatus(set, 0, false); err != nil {
-		t.Error(err)
-	}
-	replicas := int(set.Status.Replicas)
-	if err := ssc.UpdateStatefulSet(set, pods); err != nil {
-		t.Errorf("Error updating StatefulSet %s", err)
-	}
-	if err := invariants(set, spc); err != nil {
-		t.Error(err)
-	}
-	if replicas != int(set.Status.Replicas) {
-		t.Errorf("StatefulSetControl does not block on %s=false", apps.StatefulSetInitAnnotation)
-	}
-	if pods, err = spc.setPodInitStatus(set, 0, true); err != nil {
-		t.Error(err)
-	}
-	if err := scaleUpStatefulSetControl(set, ssc, spc, invariants); err != nil {
-		t.Errorf("Failed to turn up StatefulSet : %s", err)
-	}
-	set, err = spc.setsLister.StatefulSets(set.Namespace).Get(set.Name)
-	if err != nil {
-		t.Fatalf("Error getting updated StatefulSet: %v", err)
-	}
-	if int(set.Status.Replicas) != 3 {
-		t.Errorf("StatefulSetControl does not unblock on %s=true", apps.StatefulSetInitAnnotation)
-	}
-}
-
 func CreatePodFailure(t *testing.T, set *apps.StatefulSet, invariants invariantFunc) {
 	client := fake.NewSimpleClientset(set)
 	spc, _, ssc, stop := setupController(client)
@@ -1673,30 +1619,6 @@ func (spc *fakeStatefulPodControl) setPodReady(set *apps.StatefulSet, ordinal in
 	return spc.podsLister.Pods(set.Namespace).List(selector)
 }
 
-func (spc *fakeStatefulPodControl) setPodInitStatus(set *apps.StatefulSet, ordinal int, init bool) ([]*v1.Pod, error) {
-	selector, err := metav1.LabelSelectorAsSelector(set.Spec.Selector)
-	if err != nil {
-		return nil, err
-	}
-	pods, err := spc.podsLister.Pods(set.Namespace).List(selector)
-	if err != nil {
-		return nil, err
-	}
-	if 0 > ordinal || ordinal >= len(pods) {
-		return nil, fmt.Errorf("ordinal %d out of range [0,%d)", ordinal, len(pods))
-	}
-	sort.Sort(ascendingOrdinal(pods))
-	pod := copyPod(pods[ordinal])
-	if init {
-		pod.Annotations[apps.StatefulSetInitAnnotation] = "true"
-	} else {
-		pod.Annotations[apps.StatefulSetInitAnnotation] = "false"
-	}
-	fakeResourceVersion(pod)
-	spc.podsIndexer.Update(pod)
-	return spc.podsLister.Pods(set.Namespace).List(selector)
-}
-
 func (spc *fakeStatefulPodControl) addTerminatingPod(set *apps.StatefulSet, ordinal int) ([]*v1.Pod, error) {
 	pod := newStatefulSetPod(set, ordinal)
 	pod.Status.Phase = v1.PodRunning

pkg/controller/statefulset/stateful_set_utils.go

@@ -31,8 +31,6 @@ import (
 	podutil "k8s.io/kubernetes/pkg/api/v1/pod"
 	"k8s.io/kubernetes/pkg/controller"
 	"k8s.io/kubernetes/pkg/controller/history"
-
-	"github.com/golang/glog"
 )
 
 // maxUpdateRetries is the maximum number of retries used for update conflict resolution prior to failure
@@ -191,26 +189,9 @@ func updateIdentity(set *apps.StatefulSet, pod *v1.Pod) {
 	pod.Spec.Subdomain = set.Spec.ServiceName
 }
 
-// isRunningAndReady returns true if pod is in the PodRunning Phase, if it has a condition of PodReady, and if the init
-// annotation has not explicitly disabled the Pod from being ready.
+// isRunningAndReady returns true if pod is in the PodRunning Phase, if it has a condition of PodReady.
 func isRunningAndReady(pod *v1.Pod) bool {
-	if pod.Status.Phase != v1.PodRunning {
-		return false
-	}
-	podReady := podutil.IsPodReady(pod)
-	// User may have specified a pod readiness override through a debug annotation.
-	initialized, ok := pod.Annotations[apps.StatefulSetInitAnnotation]
-	if ok {
-		if initAnnotation, err := strconv.ParseBool(initialized); err != nil {
-			glog.V(4).Infof("Failed to parse %v annotation on pod %v: %v",
-				apps.StatefulSetInitAnnotation, pod.Name, err)
-		} else if !initAnnotation {
-			glog.V(4).Infof("StatefulSet pod %v waiting on annotation %v", pod.Name,
-				apps.StatefulSetInitAnnotation)
-			podReady = initAnnotation
-		}
-	}
-	return podReady
+	return pod.Status.Phase == v1.PodRunning && podutil.IsPodReady(pod)
 }
 
 // isCreated returns true if pod has been created and is maintained by the API server

pkg/controller/statefulset/stateful_set_utils_test.go

@@ -213,18 +213,6 @@ func TestIsRunningAndReady(t *testing.T) {
 	if !isRunningAndReady(pod) {
 		t.Error("Pod should be running and ready")
 	}
-	pod.Annotations[apps.StatefulSetInitAnnotation] = "true"
-	if !isRunningAndReady(pod) {
-		t.Error("isRunningAndReady does not respected init annotation set to true")
-	}
-	pod.Annotations[apps.StatefulSetInitAnnotation] = "false"
-	if isRunningAndReady(pod) {
-		t.Error("isRunningAndReady does not respected init annotation set to false")
-	}
-	pod.Annotations[apps.StatefulSetInitAnnotation] = "blah"
-	if !isRunningAndReady(pod) {
-		t.Error("isRunningAndReady does not erroneous init annotation")
-	}
 }
 
 func TestAscendingOrdinal(t *testing.T) {

staging/src/k8s.io/api/apps/v1beta1/types.go

@@ -24,8 +24,6 @@ import (
 )
 
 const (
-	// StatefulSetInitAnnotation if present, and set to false, indicates that a Pod's readiness should be ignored.
-	StatefulSetInitAnnotation      = "pod.alpha.kubernetes.io/initialized"
 	ControllerRevisionHashLabelKey = "controller-revision-hash"
 	StatefulSetRevisionLabel       = ControllerRevisionHashLabelKey
 )