tests for statefulset PersistentVolumeClaimDeletePolicy api change

api/openapi-spec/swagger.json

@@ -1318,6 +1318,20 @@
         }
       ]
     },
+    "io.k8s.api.apps.v1.StatefulSetPersistentVolumeClaimRetentionPolicy": {
+      "description": "StatefulSetPersistentVolumeClaimRetentionPolicy describes the policy used for PVCs created from the StatefulSet VolumeClaimTemplates.",
+      "properties": {
+        "whenDeleted": {
+          "description": "WhenDeleted specifies what happens to PVCs created from StatefulSet VolumeClaimTemplates when the StatefulSet is deleted. The default policy of `Retain` causes PVCs to not be affected by StatefulSet deletion. The `Delete` policy causes those PVCs to be deleted.",
+          "type": "string"
+        },
+        "whenScaled": {
+          "description": "WhenScaled specifies what happens to PVCs created from StatefulSet VolumeClaimTemplates when the StatefulSet is scaled down. The default policy of `Retain` causes PVCs to not be affected by a scaledown. The `Delete` policy causes the associated PVCs for any excess pods above the replica count to be deleted.",
+          "type": "string"
+        }
+      },
+      "type": "object"
+    },
     "io.k8s.api.apps.v1.StatefulSetSpec": {
       "description": "A StatefulSetSpec is the specification of a StatefulSet.",
       "properties": {
@@ -1326,6 +1340,10 @@
           "format": "int32",
           "type": "integer"
         },
+        "persistentVolumeClaimRetentionPolicy": {
+          "$ref": "#/definitions/io.k8s.api.apps.v1.StatefulSetPersistentVolumeClaimRetentionPolicy",
+          "description": "persistentVolumeClaimRetentionPolicy describes the lifecycle of persistent volume claims created from volumeClaimTemplates. By default, all persistent volume claims are created as needed and retained until manually deleted. This policy allows the lifecycle to be altered, for example by deleting persistent volume claims when their stateful set is deleted, or when their pod is scaled down. This requires the StatefulSetAutoDeletePVC feature gate to be enabled, which is alpha.  +optional"
+        },
         "podManagementPolicy": {
           "description": "podManagementPolicy controls how pods are created during initial scale up, when replacing pods on nodes, or when scaling down. The default policy is `OrderedReady`, where pods are created in increasing order (pod-0, then pod-1, etc) and the controller will wait until each pod is ready before continuing. When scaling down, the pods are removed in the opposite order. The alternative policy is `Parallel` which will create pods in parallel to match the desired scale without waiting, and on scale down will delete all pods at once.\n\nPossible enum values:\n - `\"OrderedReady\"` will create pods in strictly increasing order on scale up and strictly decreasing order on scale down, progressing only when the previous pod is ready or terminated. At most one pod will be changed at any time.\n - `\"Parallel\"` will create and delete pods as soon as the stateful set replica count is changed, and will not wait for pods to be ready or complete termination.",
           "enum": [

pkg/apis/apps/v1/defaults_test.go

@@ -27,10 +27,13 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/util/intstr"
+	utilfeature "k8s.io/apiserver/pkg/util/feature"
+	featuregatetesting "k8s.io/component-base/featuregate/testing"
 	"k8s.io/kubernetes/pkg/api/legacyscheme"
 	_ "k8s.io/kubernetes/pkg/apis/apps/install"
 	. "k8s.io/kubernetes/pkg/apis/apps/v1"
 	_ "k8s.io/kubernetes/pkg/apis/core/install"
+	"k8s.io/kubernetes/pkg/features"
 	utilpointer "k8s.io/utils/pointer"
 )
 
@@ -193,10 +196,13 @@ func TestSetDefaultStatefulSet(t *testing.T) {
 	}
 
 	tests := []struct {
+		name                    string
 		original                *appsv1.StatefulSet
 		expected                *appsv1.StatefulSet
+		enablePVCDeletionPolicy bool
 	}{
-		{ // labels and default update strategy
+		{
+			name: "labels and default update strategy",
 			original: &appsv1.StatefulSet{
 				Spec: appsv1.StatefulSetSpec{
 					Template: defaultTemplate,
@@ -221,7 +227,8 @@ func TestSetDefaultStatefulSet(t *testing.T) {
 				},
 			},
 		},
-		{ // Alternate update strategy
+		{
+			name: "Alternate update strategy",
 			original: &appsv1.StatefulSet{
 				Spec: appsv1.StatefulSetSpec{
 					Template: defaultTemplate,
@@ -246,7 +253,8 @@ func TestSetDefaultStatefulSet(t *testing.T) {
 				},
 			},
 		},
-		{ // Parallel pod management policy.
+		{
+			name: "Parallel pod management policy",
 			original: &appsv1.StatefulSet{
 				Spec: appsv1.StatefulSetSpec{
 					Template:            defaultTemplate,
@@ -272,7 +280,8 @@ func TestSetDefaultStatefulSet(t *testing.T) {
 				},
 			},
 		},
-		{ // UpdateStrategy.RollingUpdate.Partition is not lost when UpdateStrategy.Type is not set
+		{
+			name: "UpdateStrategy.RollingUpdate.Partition is not lost when UpdateStrategy.Type is not set",
 			original: &appsv1.StatefulSet{
 				Spec: appsv1.StatefulSetSpec{
 					Template: defaultTemplate,
@@ -302,20 +311,151 @@ func TestSetDefaultStatefulSet(t *testing.T) {
 				},
 			},
 		},
+		{
+			name: "PVC delete policy enabled, no policy specified",
+			original: &appsv1.StatefulSet{
+				Spec: appsv1.StatefulSetSpec{
+					Template: defaultTemplate,
+				},
+			},
+			expected: &appsv1.StatefulSet{
+				ObjectMeta: metav1.ObjectMeta{
+					Labels: defaultLabels,
+				},
+				Spec: appsv1.StatefulSetSpec{
+					Replicas:            &defaultReplicas,
+					Template:            defaultTemplate,
+					PodManagementPolicy: appsv1.OrderedReadyPodManagement,
+					UpdateStrategy: appsv1.StatefulSetUpdateStrategy{
+						Type: appsv1.RollingUpdateStatefulSetStrategyType,
+						RollingUpdate: &appsv1.RollingUpdateStatefulSetStrategy{
+							Partition: &defaultPartition,
+						},
+					},
+					PersistentVolumeClaimRetentionPolicy: &appsv1.StatefulSetPersistentVolumeClaimRetentionPolicy{
+						WhenDeleted: appsv1.RetainPersistentVolumeClaimRetentionPolicyType,
+						WhenScaled:  appsv1.RetainPersistentVolumeClaimRetentionPolicyType,
+					},
+					RevisionHistoryLimit: utilpointer.Int32Ptr(10),
+				},
+			},
+			enablePVCDeletionPolicy: true,
+		},
+		{
+			name: "PVC delete policy enabled, with scaledown policy specified",
+			original: &appsv1.StatefulSet{
+				Spec: appsv1.StatefulSetSpec{
+					Template: defaultTemplate,
+					PersistentVolumeClaimRetentionPolicy: &appsv1.StatefulSetPersistentVolumeClaimRetentionPolicy{
+						WhenScaled: appsv1.DeletePersistentVolumeClaimRetentionPolicyType,
+					},
+				},
+			},
+			expected: &appsv1.StatefulSet{
+				ObjectMeta: metav1.ObjectMeta{
+					Labels: defaultLabels,
+				},
+				Spec: appsv1.StatefulSetSpec{
+					Replicas:            &defaultReplicas,
+					Template:            defaultTemplate,
+					PodManagementPolicy: appsv1.OrderedReadyPodManagement,
+					UpdateStrategy: appsv1.StatefulSetUpdateStrategy{
+						Type: appsv1.RollingUpdateStatefulSetStrategyType,
+						RollingUpdate: &appsv1.RollingUpdateStatefulSetStrategy{
+							Partition: &defaultPartition,
+						},
+					},
+					PersistentVolumeClaimRetentionPolicy: &appsv1.StatefulSetPersistentVolumeClaimRetentionPolicy{
+						WhenDeleted: appsv1.RetainPersistentVolumeClaimRetentionPolicyType,
+						WhenScaled:  appsv1.DeletePersistentVolumeClaimRetentionPolicyType,
+					},
+					RevisionHistoryLimit: utilpointer.Int32Ptr(10),
+				},
+			},
+			enablePVCDeletionPolicy: true,
+		},
+		{
+			name: "PVC delete policy disabled, with set deletion policy specified",
+			original: &appsv1.StatefulSet{
+				Spec: appsv1.StatefulSetSpec{
+					Template: defaultTemplate,
+					PersistentVolumeClaimRetentionPolicy: &appsv1.StatefulSetPersistentVolumeClaimRetentionPolicy{
+						WhenDeleted: appsv1.DeletePersistentVolumeClaimRetentionPolicyType,
+					},
+				},
+			},
+			expected: &appsv1.StatefulSet{
+				ObjectMeta: metav1.ObjectMeta{
+					Labels: defaultLabels,
+				},
+				Spec: appsv1.StatefulSetSpec{
+					Replicas:            &defaultReplicas,
+					Template:            defaultTemplate,
+					PodManagementPolicy: appsv1.OrderedReadyPodManagement,
+					UpdateStrategy: appsv1.StatefulSetUpdateStrategy{
+						Type: appsv1.RollingUpdateStatefulSetStrategyType,
+						RollingUpdate: &appsv1.RollingUpdateStatefulSetStrategy{
+							Partition: &defaultPartition,
+						},
+					},
+					PersistentVolumeClaimRetentionPolicy: &appsv1.StatefulSetPersistentVolumeClaimRetentionPolicy{
+						WhenDeleted: appsv1.DeletePersistentVolumeClaimRetentionPolicyType,
+						WhenScaled:  appsv1.RetainPersistentVolumeClaimRetentionPolicyType,
+					},
+					RevisionHistoryLimit: utilpointer.Int32Ptr(10),
+				},
+			},
+			enablePVCDeletionPolicy: true,
+		},
+		{
+			name: "PVC delete policy disabled, with policy specified",
+			original: &appsv1.StatefulSet{
+				Spec: appsv1.StatefulSetSpec{
+					Template: defaultTemplate,
+					PersistentVolumeClaimRetentionPolicy: &appsv1.StatefulSetPersistentVolumeClaimRetentionPolicy{
+						WhenScaled: appsv1.DeletePersistentVolumeClaimRetentionPolicyType,
+					},
+				},
+			},
+			expected: &appsv1.StatefulSet{
+				ObjectMeta: metav1.ObjectMeta{
+					Labels: defaultLabels,
+				},
+				Spec: appsv1.StatefulSetSpec{
+					Replicas:            &defaultReplicas,
+					Template:            defaultTemplate,
+					PodManagementPolicy: appsv1.OrderedReadyPodManagement,
+					UpdateStrategy: appsv1.StatefulSetUpdateStrategy{
+						Type: appsv1.RollingUpdateStatefulSetStrategyType,
+						RollingUpdate: &appsv1.RollingUpdateStatefulSetStrategy{
+							Partition: &defaultPartition,
+						},
+					},
+					PersistentVolumeClaimRetentionPolicy: &appsv1.StatefulSetPersistentVolumeClaimRetentionPolicy{
+						WhenScaled: appsv1.DeletePersistentVolumeClaimRetentionPolicyType,
+					},
+					RevisionHistoryLimit: utilpointer.Int32Ptr(10),
+				},
+			},
+			enablePVCDeletionPolicy: false,
+		},
 	}
 
-	for i, test := range tests {
+	for _, test := range tests {
-		original := test.original
+		test := test
-		expected := test.expected
+		t.Run(test.name, func(t *testing.T) {
-		obj2 := roundTrip(t, runtime.Object(original))
+			defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.StatefulSetAutoDeletePVC, test.enablePVCDeletionPolicy)()
+
+			obj2 := roundTrip(t, runtime.Object(test.original))
 			got, ok := obj2.(*appsv1.StatefulSet)
 			if !ok {
-			t.Errorf("(%d) unexpected object: %v", i, got)
+				t.Errorf("unexpected object: %v", got)
 				t.FailNow()
 			}
-		if !apiequality.Semantic.DeepEqual(got.Spec, expected.Spec) {
+			if !apiequality.Semantic.DeepEqual(got.Spec, test.expected.Spec) {
-			t.Errorf("(%d) got different than expected\ngot:\n\t%+v\nexpected:\n\t%+v", i, got.Spec, expected.Spec)
+				t.Errorf("got different than expected\ngot:\n\t%+v\nexpected:\n\t%+v", got.Spec, test.expected.Spec)
 			}
+		})
 	}
 }
 

pkg/apis/apps/v1/zz_generated.conversion.go

@@ -261,6 +261,16 @@ func RegisterConversions(s *runtime.Scheme) error {
 	}); err != nil {
 		return err
 	}
+	if err := s.AddGeneratedConversionFunc((*v1.StatefulSetPersistentVolumeClaimRetentionPolicy)(nil), (*apps.StatefulSetPersistentVolumeClaimRetentionPolicy)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_v1_StatefulSetPersistentVolumeClaimRetentionPolicy_To_apps_StatefulSetPersistentVolumeClaimRetentionPolicy(a.(*v1.StatefulSetPersistentVolumeClaimRetentionPolicy), b.(*apps.StatefulSetPersistentVolumeClaimRetentionPolicy), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*apps.StatefulSetPersistentVolumeClaimRetentionPolicy)(nil), (*v1.StatefulSetPersistentVolumeClaimRetentionPolicy)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_apps_StatefulSetPersistentVolumeClaimRetentionPolicy_To_v1_StatefulSetPersistentVolumeClaimRetentionPolicy(a.(*apps.StatefulSetPersistentVolumeClaimRetentionPolicy), b.(*v1.StatefulSetPersistentVolumeClaimRetentionPolicy), scope)
+	}); err != nil {
+		return err
+	}
 	if err := s.AddGeneratedConversionFunc((*v1.StatefulSetStatus)(nil), (*apps.StatefulSetStatus)(nil), func(a, b interface{}, scope conversion.Scope) error {
 		return Convert_v1_StatefulSetStatus_To_apps_StatefulSetStatus(a.(*v1.StatefulSetStatus), b.(*apps.StatefulSetStatus), scope)
 	}); err != nil {
@@ -1154,6 +1164,28 @@ func Convert_apps_StatefulSetList_To_v1_StatefulSetList(in *apps.StatefulSetList
 	return autoConvert_apps_StatefulSetList_To_v1_StatefulSetList(in, out, s)
 }
 
+func autoConvert_v1_StatefulSetPersistentVolumeClaimRetentionPolicy_To_apps_StatefulSetPersistentVolumeClaimRetentionPolicy(in *v1.StatefulSetPersistentVolumeClaimRetentionPolicy, out *apps.StatefulSetPersistentVolumeClaimRetentionPolicy, s conversion.Scope) error {
+	out.WhenDeleted = apps.PersistentVolumeClaimRetentionPolicyType(in.WhenDeleted)
+	out.WhenScaled = apps.PersistentVolumeClaimRetentionPolicyType(in.WhenScaled)
+	return nil
+}
+
+// Convert_v1_StatefulSetPersistentVolumeClaimRetentionPolicy_To_apps_StatefulSetPersistentVolumeClaimRetentionPolicy is an autogenerated conversion function.
+func Convert_v1_StatefulSetPersistentVolumeClaimRetentionPolicy_To_apps_StatefulSetPersistentVolumeClaimRetentionPolicy(in *v1.StatefulSetPersistentVolumeClaimRetentionPolicy, out *apps.StatefulSetPersistentVolumeClaimRetentionPolicy, s conversion.Scope) error {
+	return autoConvert_v1_StatefulSetPersistentVolumeClaimRetentionPolicy_To_apps_StatefulSetPersistentVolumeClaimRetentionPolicy(in, out, s)
+}
+
+func autoConvert_apps_StatefulSetPersistentVolumeClaimRetentionPolicy_To_v1_StatefulSetPersistentVolumeClaimRetentionPolicy(in *apps.StatefulSetPersistentVolumeClaimRetentionPolicy, out *v1.StatefulSetPersistentVolumeClaimRetentionPolicy, s conversion.Scope) error {
+	out.WhenDeleted = v1.PersistentVolumeClaimRetentionPolicyType(in.WhenDeleted)
+	out.WhenScaled = v1.PersistentVolumeClaimRetentionPolicyType(in.WhenScaled)
+	return nil
+}
+
+// Convert_apps_StatefulSetPersistentVolumeClaimRetentionPolicy_To_v1_StatefulSetPersistentVolumeClaimRetentionPolicy is an autogenerated conversion function.
+func Convert_apps_StatefulSetPersistentVolumeClaimRetentionPolicy_To_v1_StatefulSetPersistentVolumeClaimRetentionPolicy(in *apps.StatefulSetPersistentVolumeClaimRetentionPolicy, out *v1.StatefulSetPersistentVolumeClaimRetentionPolicy, s conversion.Scope) error {
+	return autoConvert_apps_StatefulSetPersistentVolumeClaimRetentionPolicy_To_v1_StatefulSetPersistentVolumeClaimRetentionPolicy(in, out, s)
+}
+
 func autoConvert_v1_StatefulSetSpec_To_apps_StatefulSetSpec(in *v1.StatefulSetSpec, out *apps.StatefulSetSpec, s conversion.Scope) error {
 	if err := metav1.Convert_Pointer_int32_To_int32(&in.Replicas, &out.Replicas, s); err != nil {
 		return err
@@ -1170,6 +1202,7 @@ func autoConvert_v1_StatefulSetSpec_To_apps_StatefulSetSpec(in *v1.StatefulSetSp
 	}
 	out.RevisionHistoryLimit = (*int32)(unsafe.Pointer(in.RevisionHistoryLimit))
 	out.MinReadySeconds = in.MinReadySeconds
+	out.PersistentVolumeClaimRetentionPolicy = (*apps.StatefulSetPersistentVolumeClaimRetentionPolicy)(unsafe.Pointer(in.PersistentVolumeClaimRetentionPolicy))
 	return nil
 }
 
@@ -1189,6 +1222,7 @@ func autoConvert_apps_StatefulSetSpec_To_v1_StatefulSetSpec(in *apps.StatefulSet
 	}
 	out.RevisionHistoryLimit = (*int32)(unsafe.Pointer(in.RevisionHistoryLimit))
 	out.MinReadySeconds = in.MinReadySeconds
+	out.PersistentVolumeClaimRetentionPolicy = (*v1.StatefulSetPersistentVolumeClaimRetentionPolicy)(unsafe.Pointer(in.PersistentVolumeClaimRetentionPolicy))
 	return nil
 }
 

pkg/apis/apps/v1beta1/zz_generated.conversion.go

@@ -212,6 +212,16 @@ func RegisterConversions(s *runtime.Scheme) error {
 	}); err != nil {
 		return err
 	}
+	if err := s.AddGeneratedConversionFunc((*v1beta1.StatefulSetPersistentVolumeClaimRetentionPolicy)(nil), (*apps.StatefulSetPersistentVolumeClaimRetentionPolicy)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_v1beta1_StatefulSetPersistentVolumeClaimRetentionPolicy_To_apps_StatefulSetPersistentVolumeClaimRetentionPolicy(a.(*v1beta1.StatefulSetPersistentVolumeClaimRetentionPolicy), b.(*apps.StatefulSetPersistentVolumeClaimRetentionPolicy), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*apps.StatefulSetPersistentVolumeClaimRetentionPolicy)(nil), (*v1beta1.StatefulSetPersistentVolumeClaimRetentionPolicy)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_apps_StatefulSetPersistentVolumeClaimRetentionPolicy_To_v1beta1_StatefulSetPersistentVolumeClaimRetentionPolicy(a.(*apps.StatefulSetPersistentVolumeClaimRetentionPolicy), b.(*v1beta1.StatefulSetPersistentVolumeClaimRetentionPolicy), scope)
+	}); err != nil {
+		return err
+	}
 	if err := s.AddGeneratedConversionFunc((*v1beta1.StatefulSetStatus)(nil), (*apps.StatefulSetStatus)(nil), func(a, b interface{}, scope conversion.Scope) error {
 		return Convert_v1beta1_StatefulSetStatus_To_apps_StatefulSetStatus(a.(*v1beta1.StatefulSetStatus), b.(*apps.StatefulSetStatus), scope)
 	}); err != nil {
@@ -818,6 +828,28 @@ func Convert_apps_StatefulSetList_To_v1beta1_StatefulSetList(in *apps.StatefulSe
 	return autoConvert_apps_StatefulSetList_To_v1beta1_StatefulSetList(in, out, s)
 }
 
+func autoConvert_v1beta1_StatefulSetPersistentVolumeClaimRetentionPolicy_To_apps_StatefulSetPersistentVolumeClaimRetentionPolicy(in *v1beta1.StatefulSetPersistentVolumeClaimRetentionPolicy, out *apps.StatefulSetPersistentVolumeClaimRetentionPolicy, s conversion.Scope) error {
+	out.WhenDeleted = apps.PersistentVolumeClaimRetentionPolicyType(in.WhenDeleted)
+	out.WhenScaled = apps.PersistentVolumeClaimRetentionPolicyType(in.WhenScaled)
+	return nil
+}
+
+// Convert_v1beta1_StatefulSetPersistentVolumeClaimRetentionPolicy_To_apps_StatefulSetPersistentVolumeClaimRetentionPolicy is an autogenerated conversion function.
+func Convert_v1beta1_StatefulSetPersistentVolumeClaimRetentionPolicy_To_apps_StatefulSetPersistentVolumeClaimRetentionPolicy(in *v1beta1.StatefulSetPersistentVolumeClaimRetentionPolicy, out *apps.StatefulSetPersistentVolumeClaimRetentionPolicy, s conversion.Scope) error {
+	return autoConvert_v1beta1_StatefulSetPersistentVolumeClaimRetentionPolicy_To_apps_StatefulSetPersistentVolumeClaimRetentionPolicy(in, out, s)
+}
+
+func autoConvert_apps_StatefulSetPersistentVolumeClaimRetentionPolicy_To_v1beta1_StatefulSetPersistentVolumeClaimRetentionPolicy(in *apps.StatefulSetPersistentVolumeClaimRetentionPolicy, out *v1beta1.StatefulSetPersistentVolumeClaimRetentionPolicy, s conversion.Scope) error {
+	out.WhenDeleted = v1beta1.PersistentVolumeClaimRetentionPolicyType(in.WhenDeleted)
+	out.WhenScaled = v1beta1.PersistentVolumeClaimRetentionPolicyType(in.WhenScaled)
+	return nil
+}
+
+// Convert_apps_StatefulSetPersistentVolumeClaimRetentionPolicy_To_v1beta1_StatefulSetPersistentVolumeClaimRetentionPolicy is an autogenerated conversion function.
+func Convert_apps_StatefulSetPersistentVolumeClaimRetentionPolicy_To_v1beta1_StatefulSetPersistentVolumeClaimRetentionPolicy(in *apps.StatefulSetPersistentVolumeClaimRetentionPolicy, out *v1beta1.StatefulSetPersistentVolumeClaimRetentionPolicy, s conversion.Scope) error {
+	return autoConvert_apps_StatefulSetPersistentVolumeClaimRetentionPolicy_To_v1beta1_StatefulSetPersistentVolumeClaimRetentionPolicy(in, out, s)
+}
+
 func autoConvert_v1beta1_StatefulSetSpec_To_apps_StatefulSetSpec(in *v1beta1.StatefulSetSpec, out *apps.StatefulSetSpec, s conversion.Scope) error {
 	if err := metav1.Convert_Pointer_int32_To_int32(&in.Replicas, &out.Replicas, s); err != nil {
 		return err
@@ -834,6 +866,7 @@ func autoConvert_v1beta1_StatefulSetSpec_To_apps_StatefulSetSpec(in *v1beta1.Sta
 	}
 	out.RevisionHistoryLimit = (*int32)(unsafe.Pointer(in.RevisionHistoryLimit))
 	out.MinReadySeconds = in.MinReadySeconds
+	out.PersistentVolumeClaimRetentionPolicy = (*apps.StatefulSetPersistentVolumeClaimRetentionPolicy)(unsafe.Pointer(in.PersistentVolumeClaimRetentionPolicy))
 	return nil
 }
 
@@ -853,6 +886,7 @@ func autoConvert_apps_StatefulSetSpec_To_v1beta1_StatefulSetSpec(in *apps.Statef
 	}
 	out.RevisionHistoryLimit = (*int32)(unsafe.Pointer(in.RevisionHistoryLimit))
 	out.MinReadySeconds = in.MinReadySeconds
+	out.PersistentVolumeClaimRetentionPolicy = (*v1beta1.StatefulSetPersistentVolumeClaimRetentionPolicy)(unsafe.Pointer(in.PersistentVolumeClaimRetentionPolicy))
 	return nil
 }
 

pkg/apis/apps/v1beta2/zz_generated.conversion.go

@@ -282,6 +282,16 @@ func RegisterConversions(s *runtime.Scheme) error {
 	}); err != nil {
 		return err
 	}
+	if err := s.AddGeneratedConversionFunc((*v1beta2.StatefulSetPersistentVolumeClaimRetentionPolicy)(nil), (*apps.StatefulSetPersistentVolumeClaimRetentionPolicy)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_v1beta2_StatefulSetPersistentVolumeClaimRetentionPolicy_To_apps_StatefulSetPersistentVolumeClaimRetentionPolicy(a.(*v1beta2.StatefulSetPersistentVolumeClaimRetentionPolicy), b.(*apps.StatefulSetPersistentVolumeClaimRetentionPolicy), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*apps.StatefulSetPersistentVolumeClaimRetentionPolicy)(nil), (*v1beta2.StatefulSetPersistentVolumeClaimRetentionPolicy)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_apps_StatefulSetPersistentVolumeClaimRetentionPolicy_To_v1beta2_StatefulSetPersistentVolumeClaimRetentionPolicy(a.(*apps.StatefulSetPersistentVolumeClaimRetentionPolicy), b.(*v1beta2.StatefulSetPersistentVolumeClaimRetentionPolicy), scope)
+	}); err != nil {
+		return err
+	}
 	if err := s.AddGeneratedConversionFunc((*v1beta2.StatefulSetStatus)(nil), (*apps.StatefulSetStatus)(nil), func(a, b interface{}, scope conversion.Scope) error {
 		return Convert_v1beta2_StatefulSetStatus_To_apps_StatefulSetStatus(a.(*v1beta2.StatefulSetStatus), b.(*apps.StatefulSetStatus), scope)
 	}); err != nil {
@@ -1250,6 +1260,28 @@ func Convert_apps_StatefulSetList_To_v1beta2_StatefulSetList(in *apps.StatefulSe
 	return autoConvert_apps_StatefulSetList_To_v1beta2_StatefulSetList(in, out, s)
 }
 
+func autoConvert_v1beta2_StatefulSetPersistentVolumeClaimRetentionPolicy_To_apps_StatefulSetPersistentVolumeClaimRetentionPolicy(in *v1beta2.StatefulSetPersistentVolumeClaimRetentionPolicy, out *apps.StatefulSetPersistentVolumeClaimRetentionPolicy, s conversion.Scope) error {
+	out.WhenDeleted = apps.PersistentVolumeClaimRetentionPolicyType(in.WhenDeleted)
+	out.WhenScaled = apps.PersistentVolumeClaimRetentionPolicyType(in.WhenScaled)
+	return nil
+}
+
+// Convert_v1beta2_StatefulSetPersistentVolumeClaimRetentionPolicy_To_apps_StatefulSetPersistentVolumeClaimRetentionPolicy is an autogenerated conversion function.
+func Convert_v1beta2_StatefulSetPersistentVolumeClaimRetentionPolicy_To_apps_StatefulSetPersistentVolumeClaimRetentionPolicy(in *v1beta2.StatefulSetPersistentVolumeClaimRetentionPolicy, out *apps.StatefulSetPersistentVolumeClaimRetentionPolicy, s conversion.Scope) error {
+	return autoConvert_v1beta2_StatefulSetPersistentVolumeClaimRetentionPolicy_To_apps_StatefulSetPersistentVolumeClaimRetentionPolicy(in, out, s)
+}
+
+func autoConvert_apps_StatefulSetPersistentVolumeClaimRetentionPolicy_To_v1beta2_StatefulSetPersistentVolumeClaimRetentionPolicy(in *apps.StatefulSetPersistentVolumeClaimRetentionPolicy, out *v1beta2.StatefulSetPersistentVolumeClaimRetentionPolicy, s conversion.Scope) error {
+	out.WhenDeleted = v1beta2.PersistentVolumeClaimRetentionPolicyType(in.WhenDeleted)
+	out.WhenScaled = v1beta2.PersistentVolumeClaimRetentionPolicyType(in.WhenScaled)
+	return nil
+}
+
+// Convert_apps_StatefulSetPersistentVolumeClaimRetentionPolicy_To_v1beta2_StatefulSetPersistentVolumeClaimRetentionPolicy is an autogenerated conversion function.
+func Convert_apps_StatefulSetPersistentVolumeClaimRetentionPolicy_To_v1beta2_StatefulSetPersistentVolumeClaimRetentionPolicy(in *apps.StatefulSetPersistentVolumeClaimRetentionPolicy, out *v1beta2.StatefulSetPersistentVolumeClaimRetentionPolicy, s conversion.Scope) error {
+	return autoConvert_apps_StatefulSetPersistentVolumeClaimRetentionPolicy_To_v1beta2_StatefulSetPersistentVolumeClaimRetentionPolicy(in, out, s)
+}
+
 func autoConvert_v1beta2_StatefulSetSpec_To_apps_StatefulSetSpec(in *v1beta2.StatefulSetSpec, out *apps.StatefulSetSpec, s conversion.Scope) error {
 	if err := metav1.Convert_Pointer_int32_To_int32(&in.Replicas, &out.Replicas, s); err != nil {
 		return err
@@ -1266,6 +1298,7 @@ func autoConvert_v1beta2_StatefulSetSpec_To_apps_StatefulSetSpec(in *v1beta2.Sta
 	}
 	out.RevisionHistoryLimit = (*int32)(unsafe.Pointer(in.RevisionHistoryLimit))
 	out.MinReadySeconds = in.MinReadySeconds
+	out.PersistentVolumeClaimRetentionPolicy = (*apps.StatefulSetPersistentVolumeClaimRetentionPolicy)(unsafe.Pointer(in.PersistentVolumeClaimRetentionPolicy))
 	return nil
 }
 
@@ -1285,6 +1318,7 @@ func autoConvert_apps_StatefulSetSpec_To_v1beta2_StatefulSetSpec(in *apps.Statef
 	}
 	out.RevisionHistoryLimit = (*int32)(unsafe.Pointer(in.RevisionHistoryLimit))
 	out.MinReadySeconds = in.MinReadySeconds
+	out.PersistentVolumeClaimRetentionPolicy = (*v1beta2.StatefulSetPersistentVolumeClaimRetentionPolicy)(unsafe.Pointer(in.PersistentVolumeClaimRetentionPolicy))
 	return nil
 }
 

pkg/apis/apps/validation/validation_test.go

@@ -76,8 +76,10 @@ func TestValidateStatefulSet(t *testing.T) {
 		},
 	}
 
-	successCases := []apps.StatefulSet{
+	const enableStatefulSetAutoDeletePVC = "[enable StatefulSetAutoDeletePVC]"
-		{
+
+	successCases := map[string]apps.StatefulSet{
+		"alpha name": {
 			ObjectMeta: metav1.ObjectMeta{Name: "abc", Namespace: metav1.NamespaceDefault},
 			Spec: apps.StatefulSetSpec{
 				PodManagementPolicy: apps.OrderedReadyPodManagement,
@@ -86,7 +88,7 @@ func TestValidateStatefulSet(t *testing.T) {
 				UpdateStrategy:      apps.StatefulSetUpdateStrategy{Type: apps.RollingUpdateStatefulSetStrategyType},
 			},
 		},
-		{
+		"alphanumeric name": {
 			ObjectMeta: metav1.ObjectMeta{Name: "abc-123", Namespace: metav1.NamespaceDefault},
 			Spec: apps.StatefulSetSpec{
 				PodManagementPolicy: apps.OrderedReadyPodManagement,
@@ -95,7 +97,7 @@ func TestValidateStatefulSet(t *testing.T) {
 				UpdateStrategy:      apps.StatefulSetUpdateStrategy{Type: apps.RollingUpdateStatefulSetStrategyType},
 			},
 		},
-		{
+		"parallel pod management": {
 			ObjectMeta: metav1.ObjectMeta{Name: "abc-123", Namespace: metav1.NamespaceDefault},
 			Spec: apps.StatefulSetSpec{
 				PodManagementPolicy: apps.ParallelPodManagement,
@@ -104,7 +106,7 @@ func TestValidateStatefulSet(t *testing.T) {
 				UpdateStrategy:      apps.StatefulSetUpdateStrategy{Type: apps.RollingUpdateStatefulSetStrategyType},
 			},
 		},
-		{
+		"ordered ready pod management": {
 			ObjectMeta: metav1.ObjectMeta{Name: "abc-123", Namespace: metav1.NamespaceDefault},
 			Spec: apps.StatefulSetSpec{
 				PodManagementPolicy: apps.OrderedReadyPodManagement,
@@ -113,7 +115,7 @@ func TestValidateStatefulSet(t *testing.T) {
 				UpdateStrategy:      apps.StatefulSetUpdateStrategy{Type: apps.OnDeleteStatefulSetStrategyType},
 			},
 		},
-		{
+		"update strategy": {
 			ObjectMeta: metav1.ObjectMeta{Name: "abc-123", Namespace: metav1.NamespaceDefault},
 			Spec: apps.StatefulSetSpec{
 				PodManagementPolicy: apps.OrderedReadyPodManagement,
@@ -127,11 +129,29 @@ func TestValidateStatefulSet(t *testing.T) {
 					}()},
 			},
 		},
+		"PVC policy " + enableStatefulSetAutoDeletePVC: {
+			ObjectMeta: metav1.ObjectMeta{Name: "abc-123", Namespace: metav1.NamespaceDefault},
+			Spec: apps.StatefulSetSpec{
+				PodManagementPolicy: apps.OrderedReadyPodManagement,
+				Selector:            &metav1.LabelSelector{MatchLabels: validLabels},
+				Template:            validPodTemplate.Template,
+				UpdateStrategy:      apps.StatefulSetUpdateStrategy{Type: apps.RollingUpdateStatefulSetStrategyType},
+				PersistentVolumeClaimRetentionPolicy: &apps.StatefulSetPersistentVolumeClaimRetentionPolicy{
+					WhenDeleted: apps.DeletePersistentVolumeClaimRetentionPolicyType,
+					WhenScaled:  apps.RetainPersistentVolumeClaimRetentionPolicyType,
+				},
+			},
+		},
 	}
 
-	for i, successCase := range successCases {
+	for name, successCase := range successCases {
-		t.Run("success case "+strconv.Itoa(i), func(t *testing.T) {
+		name := name
-			if errs := ValidateStatefulSet(&successCase, corevalidation.PodValidationOptions{}); len(errs) != 0 {
+		set := successCase
+		t.Run("success case "+name, func(t *testing.T) {
+			if strings.Contains(name, enableStatefulSetAutoDeletePVC) {
+				defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.StatefulSetAutoDeletePVC, true)()
+			}
+			if errs := ValidateStatefulSet(&set, corevalidation.PodValidationOptions{}); len(errs) != 0 {
 				t.Errorf("expected success: %v", errs)
 			}
 		})
@@ -352,10 +372,35 @@ func TestValidateStatefulSet(t *testing.T) {
 				UpdateStrategy:      apps.StatefulSetUpdateStrategy{Type: apps.RollingUpdateStatefulSetStrategyType},
 			},
 		},
+		"empty PersistentVolumeClaimRetentionPolicy " + enableStatefulSetAutoDeletePVC: {
+			ObjectMeta: metav1.ObjectMeta{Name: "abc-123", Namespace: metav1.NamespaceDefault},
+			Spec: apps.StatefulSetSpec{
+				PersistentVolumeClaimRetentionPolicy: &apps.StatefulSetPersistentVolumeClaimRetentionPolicy{},
+				PodManagementPolicy:                  apps.OrderedReadyPodManagement,
+				Selector:                             &metav1.LabelSelector{MatchLabels: validLabels},
+				Template:                             validPodTemplate.Template,
+				UpdateStrategy:                       apps.StatefulSetUpdateStrategy{Type: apps.RollingUpdateStatefulSetStrategyType},
+			},
+		},
+		"invalid PersistentVolumeClaimRetentionPolicy " + enableStatefulSetAutoDeletePVC: {
+			ObjectMeta: metav1.ObjectMeta{Name: "abc-123", Namespace: metav1.NamespaceDefault},
+			Spec: apps.StatefulSetSpec{
+				PersistentVolumeClaimRetentionPolicy: &apps.StatefulSetPersistentVolumeClaimRetentionPolicy{
+					WhenScaled: apps.PersistentVolumeClaimRetentionPolicyType("invalid-delete-policy"),
+				},
+				PodManagementPolicy: apps.OrderedReadyPodManagement,
+				Selector:            &metav1.LabelSelector{MatchLabels: validLabels},
+				Template:            validPodTemplate.Template,
+				UpdateStrategy:      apps.StatefulSetUpdateStrategy{Type: apps.RollingUpdateStatefulSetStrategyType},
+			},
+		},
 	}
 
 	for k, v := range errorCases {
 		t.Run(k, func(t *testing.T) {
+			if strings.Contains(k, enableStatefulSetAutoDeletePVC) {
+				defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.StatefulSetAutoDeletePVC, true)()
+			}
 			errs := ValidateStatefulSet(&v, corevalidation.PodValidationOptions{})
 			if len(errs) == 0 {
 				t.Errorf("expected failure for %s", k)
@@ -378,6 +423,9 @@ func TestValidateStatefulSet(t *testing.T) {
 					field != "spec.updateStrategy.rollingUpdate" &&
 					field != "spec.updateStrategy.rollingUpdate.partition" &&
 					field != "spec.podManagementPolicy" &&
+					field != "spec.persistentVolumeClaimRetentionPolicy" &&
+					field != "spec.persistentVolumeClaimRetentionPolicy.whenDeleted" &&
+					field != "spec.persistentVolumeClaimRetentionPolicy.whenScaled" &&
 					field != "spec.template.spec.activeDeadlineSeconds" {
 					t.Errorf("%s: missing prefix for: %v", k, errs[i])
 				}
@@ -748,6 +796,53 @@ func TestValidateStatefulSetUpdate(t *testing.T) {
 				},
 			},
 		},
+		{
+			old: apps.StatefulSet{
+				ObjectMeta: metav1.ObjectMeta{Name: "abc", Namespace: metav1.NamespaceDefault},
+				Spec: apps.StatefulSetSpec{
+					PodManagementPolicy: apps.OrderedReadyPodManagement,
+					Selector:            &metav1.LabelSelector{MatchLabels: validLabels},
+					Template:            addContainersValidTemplate.Template,
+					UpdateStrategy:      apps.StatefulSetUpdateStrategy{Type: apps.RollingUpdateStatefulSetStrategyType},
+				},
+			},
+			update: apps.StatefulSet{
+				ObjectMeta: metav1.ObjectMeta{Name: "abc", Namespace: metav1.NamespaceDefault},
+				Spec: apps.StatefulSetSpec{
+					PodManagementPolicy: apps.OrderedReadyPodManagement,
+					Selector:            &metav1.LabelSelector{MatchLabels: validLabels},
+					Template:            validPodTemplate.Template,
+					UpdateStrategy:      apps.StatefulSetUpdateStrategy{Type: apps.RollingUpdateStatefulSetStrategyType},
+					PersistentVolumeClaimRetentionPolicy: &apps.StatefulSetPersistentVolumeClaimRetentionPolicy{
+						WhenDeleted: apps.RetainPersistentVolumeClaimRetentionPolicyType,
+						WhenScaled:  apps.RetainPersistentVolumeClaimRetentionPolicyType,
+					},
+				},
+			},
+		},
+		{
+			old: apps.StatefulSet{
+				ObjectMeta: metav1.ObjectMeta{Name: "abc", Namespace: metav1.NamespaceDefault},
+				Spec: apps.StatefulSetSpec{
+					PodManagementPolicy: apps.OrderedReadyPodManagement,
+					Selector:            &metav1.LabelSelector{MatchLabels: validLabels},
+					Template:            addContainersValidTemplate.Template,
+					UpdateStrategy:      apps.StatefulSetUpdateStrategy{Type: apps.RollingUpdateStatefulSetStrategyType},
+					PersistentVolumeClaimRetentionPolicy: &apps.StatefulSetPersistentVolumeClaimRetentionPolicy{
+						WhenScaled: apps.RetainPersistentVolumeClaimRetentionPolicyType,
+					},
+				},
+			},
+			update: apps.StatefulSet{
+				ObjectMeta: metav1.ObjectMeta{Name: "abc", Namespace: metav1.NamespaceDefault},
+				Spec: apps.StatefulSetSpec{
+					PodManagementPolicy: apps.OrderedReadyPodManagement,
+					Selector:            &metav1.LabelSelector{MatchLabels: validLabels},
+					Template:            validPodTemplate.Template,
+					UpdateStrategy:      apps.StatefulSetUpdateStrategy{Type: apps.RollingUpdateStatefulSetStrategyType},
+				},
+			},
+		},
 	}
 
 	for i, successCase := range successCases {

pkg/apis/apps/zz_generated.deepcopy.go

@@ -712,6 +712,22 @@ func (in *StatefulSetList) DeepCopyObject() runtime.Object {
 	return nil
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *StatefulSetPersistentVolumeClaimRetentionPolicy) DeepCopyInto(out *StatefulSetPersistentVolumeClaimRetentionPolicy) {
+	*out = *in
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new StatefulSetPersistentVolumeClaimRetentionPolicy.
+func (in *StatefulSetPersistentVolumeClaimRetentionPolicy) DeepCopy() *StatefulSetPersistentVolumeClaimRetentionPolicy {
+	if in == nil {
+		return nil
+	}
+	out := new(StatefulSetPersistentVolumeClaimRetentionPolicy)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *StatefulSetSpec) DeepCopyInto(out *StatefulSetSpec) {
 	*out = *in
@@ -734,6 +750,11 @@ func (in *StatefulSetSpec) DeepCopyInto(out *StatefulSetSpec) {
 		*out = new(int32)
 		**out = **in
 	}
+	if in.PersistentVolumeClaimRetentionPolicy != nil {
+		in, out := &in.PersistentVolumeClaimRetentionPolicy, &out.PersistentVolumeClaimRetentionPolicy
+		*out = new(StatefulSetPersistentVolumeClaimRetentionPolicy)
+		**out = **in
+	}
 	return
 }
 

pkg/registry/apps/statefulset/strategy.go

@@ -18,8 +18,6 @@ package statefulset
 
 import (
 	"context"
-	utilfeature "k8s.io/apiserver/pkg/util/feature"
-	"k8s.io/kubernetes/pkg/features"
 
 	apiequality "k8s.io/apimachinery/pkg/api/equality"
 	"k8s.io/apimachinery/pkg/runtime"
@@ -113,8 +111,8 @@ func dropStatefulSetDisabledFields(newSS *apps.StatefulSet, oldSS *apps.Stateful
 	}
 
 	if !utilfeature.DefaultFeatureGate.Enabled(features.StatefulSetAutoDeletePVC) {
-		if oldStatefulSet == nil || oldStatefulSet.Spec.PersistentVolumeClaimRetentionPolicy == nil {
+		if oldSS == nil || oldSS.Spec.PersistentVolumeClaimRetentionPolicy == nil {
-			newStatefulSet.Spec.PersistentVolumeClaimRetentionPolicy = nil
+			newSS.Spec.PersistentVolumeClaimRetentionPolicy = nil
 		}
 	}
 }

pkg/registry/apps/statefulset/strategy_test.go

@@ -178,13 +178,106 @@ func TestStatefulSetStrategy(t *testing.T) {
 			if len(errs) == 0 {
 				t.Errorf("updating only spec.Replicas is allowed on a statefulset: %v", errs)
 			}
-			expectedUpdateErrorString := "spec: Forbidden: updates to statefulset spec for fields other than 'replicas'," +
+			expectedUpdateErrorString := "spec: Forbidden: updates to statefulset spec for fields other than" +
-				" 'template', 'updateStrategy' and 'minReadySeconds' are forbidden"
+				" 'replicas', 'template', 'updateStrategy' and 'persistentVolumeClaimRetentionPolicy' are forbidden"
 			if errs[0].Error() != expectedUpdateErrorString {
 				t.Errorf("expected error string %v", errs[0].Error())
 			}
 		})
 
+	validPs = &apps.StatefulSet{
+		ObjectMeta: metav1.ObjectMeta{Name: ps.Name, Namespace: ps.Namespace, ResourceVersion: "1", Generation: 1},
+		Spec: apps.StatefulSetSpec{
+			PodManagementPolicy: apps.OrderedReadyPodManagement,
+			Selector:            ps.Spec.Selector,
+			Template:            validPodTemplate.Template,
+			UpdateStrategy:      apps.StatefulSetUpdateStrategy{Type: apps.RollingUpdateStatefulSetStrategyType},
+			PersistentVolumeClaimRetentionPolicy: &apps.StatefulSetPersistentVolumeClaimRetentionPolicy{
+				WhenDeleted: apps.RetainPersistentVolumeClaimRetentionPolicyType,
+				WhenScaled:  apps.DeletePersistentVolumeClaimRetentionPolicyType,
+			},
+		},
+		Status: apps.StatefulSetStatus{Replicas: 4},
+	}
+
+	t.Run("when StatefulSetAutoDeletePVC feature gate is enabled, PersistentVolumeClaimRetentionPolicy should be updated", func(t *testing.T) {
+		defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.StatefulSetAutoDeletePVC, true)()
+		// Test creation
+		ps := &apps.StatefulSet{
+			ObjectMeta: metav1.ObjectMeta{Name: "abc", Namespace: metav1.NamespaceDefault},
+			Spec: apps.StatefulSetSpec{
+				PodManagementPolicy: apps.OrderedReadyPodManagement,
+				Selector:            ps.Spec.Selector,
+				Template:            validPodTemplate.Template,
+				UpdateStrategy:      apps.StatefulSetUpdateStrategy{Type: apps.RollingUpdateStatefulSetStrategyType},
+				PersistentVolumeClaimRetentionPolicy: &apps.StatefulSetPersistentVolumeClaimRetentionPolicy{
+					WhenDeleted: apps.PersistentVolumeClaimRetentionPolicyType("invalid policy"),
+				},
+			},
+		}
+		Strategy.PrepareForCreate(ctx, ps)
+		errs := Strategy.Validate(ctx, ps)
+		if len(errs) == 0 {
+			t.Errorf("expected failure when PersistentVolumeClaimRetentionPolicy is invalid")
+		}
+		expectedCreateErrorString := "spec.persistentVolumeClaimRetentionPolicy.whenDeleted: Unsupported value: \"invalid policy\": supported values: \"Retain\", \"Delete\""
+		if errs[0].Error() != expectedCreateErrorString {
+			t.Errorf("mismatched error string %v (expected %v)", errs[0].Error(), expectedCreateErrorString)
+		}
+		Strategy.PrepareForUpdate(ctx, validPs, ps)
+		errs = Strategy.ValidateUpdate(ctx, validPs, ps)
+		if len(errs) != 0 {
+			t.Errorf("updates to PersistentVolumeClaimRetentionPolicy should be allowed: %v", errs)
+		}
+		invalidPs := ps
+		invalidPs.Spec.PersistentVolumeClaimRetentionPolicy.WhenDeleted = apps.PersistentVolumeClaimRetentionPolicyType("invalid type")
+		Strategy.PrepareForUpdate(ctx, validPs, invalidPs)
+		errs = Strategy.ValidateUpdate(ctx, validPs, ps)
+		if len(errs) != 0 {
+			t.Errorf("invalid updates to PersistentVolumeClaimRetentionPolicyType should be allowed: %v", errs)
+		}
+		if validPs.Spec.PersistentVolumeClaimRetentionPolicy.WhenDeleted != apps.RetainPersistentVolumeClaimRetentionPolicyType || validPs.Spec.PersistentVolumeClaimRetentionPolicy.WhenScaled != apps.DeletePersistentVolumeClaimRetentionPolicyType {
+			t.Errorf("expected PersistentVolumeClaimRetentionPolicy to be updated: %v", errs)
+		}
+	})
+	t.Run("when StatefulSetAutoDeletePVC feature gate is disabled, PersistentVolumeClaimRetentionPolicy should not be updated", func(t *testing.T) {
+		defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.StatefulSetAutoDeletePVC, true)()
+		// Test creation
+		ps := &apps.StatefulSet{
+			ObjectMeta: metav1.ObjectMeta{Name: "abc", Namespace: metav1.NamespaceDefault},
+			Spec: apps.StatefulSetSpec{
+				PodManagementPolicy: apps.OrderedReadyPodManagement,
+				Selector:            ps.Spec.Selector,
+				Template:            validPodTemplate.Template,
+				UpdateStrategy:      apps.StatefulSetUpdateStrategy{Type: apps.RollingUpdateStatefulSetStrategyType},
+				PersistentVolumeClaimRetentionPolicy: &apps.StatefulSetPersistentVolumeClaimRetentionPolicy{
+					WhenDeleted: apps.RetainPersistentVolumeClaimRetentionPolicyType,
+					WhenScaled:  apps.DeletePersistentVolumeClaimRetentionPolicyType,
+				},
+			},
+		}
+		Strategy.PrepareForCreate(ctx, ps)
+		errs := Strategy.Validate(ctx, ps)
+		if len(errs) != 0 {
+			t.Errorf("unexpected failure with PersistentVolumeClaimRetentionPolicy: %v", errs)
+		}
+		if ps.Spec.PersistentVolumeClaimRetentionPolicy.WhenDeleted != apps.RetainPersistentVolumeClaimRetentionPolicyType || ps.Spec.PersistentVolumeClaimRetentionPolicy.WhenScaled != apps.DeletePersistentVolumeClaimRetentionPolicyType {
+			t.Errorf("expected invalid PersistentVolumeClaimRetentionPolicy to be defaulted to Retain, but got %v", ps.Spec.PersistentVolumeClaimRetentionPolicy)
+		}
+		Strategy.PrepareForUpdate(ctx, validPs, ps)
+		errs = Strategy.ValidateUpdate(ctx, validPs, ps)
+		if len(errs) != 0 {
+			t.Errorf("updates to PersistentVolumeClaimRetentionPolicy should be allowed: %v", errs)
+		}
+		invalidPs := ps
+		invalidPs.Spec.PersistentVolumeClaimRetentionPolicy.WhenDeleted = apps.PersistentVolumeClaimRetentionPolicyType("invalid type")
+		Strategy.PrepareForUpdate(ctx, validPs, invalidPs)
+		errs = Strategy.ValidateUpdate(ctx, validPs, ps)
+		if len(errs) != 0 {
+			t.Errorf("should ignore updates to PersistentVolumeClaimRetentionPolicyType")
+		}
+	})
+
 	validPs.Spec.Selector = &metav1.LabelSelector{MatchLabels: map[string]string{"a": "bar"}}
 	Strategy.PrepareForUpdate(ctx, validPs, ps)
 	errs = Strategy.ValidateUpdate(ctx, validPs, ps)

staging/src/k8s.io/api/apps/v1/generated.pb.go

@@ -748,10 +748,40 @@ func (m *StatefulSetList) XXX_DiscardUnknown() {
 
 var xxx_messageInfo_StatefulSetList proto.InternalMessageInfo
 
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) Reset() {
+	*m = StatefulSetPersistentVolumeClaimRetentionPolicy{}
+}
+func (*StatefulSetPersistentVolumeClaimRetentionPolicy) ProtoMessage() {}
+func (*StatefulSetPersistentVolumeClaimRetentionPolicy) Descriptor() ([]byte, []int) {
+	return fileDescriptor_e1014cab6f31e43b, []int{25}
+}
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	b = b[:cap(b)]
+	n, err := m.MarshalToSizedBuffer(b)
+	if err != nil {
+		return nil, err
+	}
+	return b[:n], nil
+}
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_StatefulSetPersistentVolumeClaimRetentionPolicy.Merge(m, src)
+}
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) XXX_Size() int {
+	return m.Size()
+}
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) XXX_DiscardUnknown() {
+	xxx_messageInfo_StatefulSetPersistentVolumeClaimRetentionPolicy.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_StatefulSetPersistentVolumeClaimRetentionPolicy proto.InternalMessageInfo
+
 func (m *StatefulSetSpec) Reset()      { *m = StatefulSetSpec{} }
 func (*StatefulSetSpec) ProtoMessage() {}
 func (*StatefulSetSpec) Descriptor() ([]byte, []int) {
-	return fileDescriptor_e1014cab6f31e43b, []int{25}
+	return fileDescriptor_e1014cab6f31e43b, []int{26}
 }
 func (m *StatefulSetSpec) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -779,7 +809,7 @@ var xxx_messageInfo_StatefulSetSpec proto.InternalMessageInfo
 func (m *StatefulSetStatus) Reset()      { *m = StatefulSetStatus{} }
 func (*StatefulSetStatus) ProtoMessage() {}
 func (*StatefulSetStatus) Descriptor() ([]byte, []int) {
-	return fileDescriptor_e1014cab6f31e43b, []int{26}
+	return fileDescriptor_e1014cab6f31e43b, []int{27}
 }
 func (m *StatefulSetStatus) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -807,7 +837,7 @@ var xxx_messageInfo_StatefulSetStatus proto.InternalMessageInfo
 func (m *StatefulSetUpdateStrategy) Reset()      { *m = StatefulSetUpdateStrategy{} }
 func (*StatefulSetUpdateStrategy) ProtoMessage() {}
 func (*StatefulSetUpdateStrategy) Descriptor() ([]byte, []int) {
-	return fileDescriptor_e1014cab6f31e43b, []int{27}
+	return fileDescriptor_e1014cab6f31e43b, []int{28}
 }
 func (m *StatefulSetUpdateStrategy) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -858,6 +888,7 @@ func init() {
 	proto.RegisterType((*StatefulSet)(nil), "k8s.io.api.apps.v1.StatefulSet")
 	proto.RegisterType((*StatefulSetCondition)(nil), "k8s.io.api.apps.v1.StatefulSetCondition")
 	proto.RegisterType((*StatefulSetList)(nil), "k8s.io.api.apps.v1.StatefulSetList")
+	proto.RegisterType((*StatefulSetPersistentVolumeClaimRetentionPolicy)(nil), "k8s.io.api.apps.v1.StatefulSetPersistentVolumeClaimRetentionPolicy")
 	proto.RegisterType((*StatefulSetSpec)(nil), "k8s.io.api.apps.v1.StatefulSetSpec")
 	proto.RegisterType((*StatefulSetStatus)(nil), "k8s.io.api.apps.v1.StatefulSetStatus")
 	proto.RegisterType((*StatefulSetUpdateStrategy)(nil), "k8s.io.api.apps.v1.StatefulSetUpdateStrategy")
@@ -868,135 +899,142 @@ func init() {
 }
 
 var fileDescriptor_e1014cab6f31e43b = []byte{
-	// 2047 bytes of a gzipped FileDescriptorProto
+	// 2149 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xec, 0x5a, 0xcd, 0x6f, 0x24, 0x47,
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xec, 0x5a, 0xcb, 0x6f, 0x1b, 0xc7,
-	0x15, 0x77, 0xcf, 0x87, 0x3d, 0x2e, 0xaf, 0xed, 0xdd, 0xb2, 0xb1, 0x27, 0xbb, 0x64, 0x66, 0x19,
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+	0x67, 0x12, 0xdb, 0xf5, 0xb5, 0x7f, 0xb0, 0xf9, 0x05, 0x58, 0xee, 0x47, 0xab, 0x13, 0x00, 0x98,
-	0x3e, 0x95, 0xcd, 0xe5, 0xfe, 0x5f, 0x20, 0x4b, 0xae, 0x73, 0x7e, 0x2c, 0x2b, 0xba, 0xad, 0xa9,
+	0xd0, 0x60, 0xb1, 0xf3, 0xbc, 0x94, 0x5e, 0xb6, 0xae, 0x91, 0xbc, 0xb9, 0x2b, 0xa1, 0x43, 0xd2,
-	0x9d, 0xeb, 0xb6, 0x46, 0xa2, 0x67, 0xe7, 0xcf, 0xa6, 0x67, 0x5b, 0xef, 0x55, 0xc1, 0x95, 0xdc,
+	0x41, 0xe0, 0xcb, 0x60, 0x8e, 0x09, 0x04, 0x4d, 0x25, 0xdb, 0xd8, 0x08, 0x52, 0x29, 0xfc, 0xe4,
-	0x19, 0xfb, 0x19, 0x5e, 0xb9, 0xe4, 0x84, 0x61, 0xf9, 0x0c, 0xc2, 0x70, 0x13, 0x2c, 0x8b, 0xef,
+	0xb2, 0x17, 0x75, 0xa1, 0x38, 0x0e, 0x1e, 0x82, 0x25, 0xdb, 0xea, 0x6e, 0x61, 0x13, 0xf7, 0x08,
-	0x74, 0x19, 0x5d, 0x19, 0xcd, 0x47, 0x37, 0xdd, 0x8d, 0xb2, 0x78, 0xd9, 0x95, 0x4f, 0xf5, 0x8c,
+	0x2b, 0x7b, 0xfe, 0x56, 0xf2, 0xa7, 0x9c, 0xd9, 0xf6, 0x2b, 0xc1, 0x35, 0x7d, 0x37, 0x0b, 0x61,
-	0x57, 0x3e, 0x49, 0x2f, 0xc4, 0xdf, 0x4b, 0x82, 0xc4, 0xcd, 0x7b, 0x21, 0xfe, 0x65, 0x92, 0xc5,
+	0xd7, 0x20, 0x49, 0x33, 0x0f, 0x02, 0x19, 0x25, 0x34, 0x32, 0x5f, 0x08, 0x67, 0x32, 0xff, 0x56,
-	0xc3, 0xef, 0x86, 0x59, 0x19, 0x31, 0xcc, 0x71, 0x86, 0x4c, 0x9a, 0x45, 0x04, 0x19, 0xf4, 0x33,
+	0x21, 0xcb, 0xa9, 0x53, 0x7e, 0x23, 0xcc, 0x7b, 0xa4, 0xaa, 0x9c, 0xea, 0x91, 0x4a, 0x22, 0xe3,
-	0x7d, 0x8b, 0x7a, 0x47, 0xf2, 0x2d, 0x6a, 0x63, 0xc2, 0x6e, 0x98, 0xfe, 0x76, 0x47, 0xaa, 0xdd,
+	0x67, 0x4f, 0x28, 0xe3, 0x3f, 0x52, 0xc0, 0x15, 0x7b, 0x82, 0x34, 0xaa, 0x02, 0xbe, 0x2c, 0x9d,
-	0x17, 0xce, 0xae, 0xdd, 0x5b, 0x7f, 0x55, 0xc0, 0x73, 0x85, 0xfb, 0x11, 0x6e, 0xa6, 0x6a, 0xfe,
+	0x31, 0xcb, 0x32, 0x49, 0x46, 0xb6, 0xd7, 0x46, 0xc3, 0xfa, 0x95, 0x49, 0x90, 0x68, 0x22, 0xd7,
-	0xad, 0x4c, 0xcd, 0x7f, 0xbe, 0xd0, 0x30, 0x51, 0xf8, 0x4d, 0xf9, 0xc5, 0xcf, 0xdd, 0x89, 0x17,
+	0x1a, 0x1f, 0x94, 0xc1, 0x85, 0x4c, 0x79, 0xfc, 0x02, 0x5f, 0xcb, 0x32, 0x9a, 0xbe, 0x78, 0x02,
-	0x3f, 0x12, 0x45, 0x37, 0xf9, 0x06, 0xa8, 0xb3, 0xf1, 0xe4, 0x69, 0x63, 0xe6, 0x83, 0xa7, 0x8d,
+	0x4d, 0xbf, 0x0e, 0x16, 0xc5, 0x27, 0xd6, 0xd4, 0x95, 0x20, 0xdc, 0xd3, 0x4e, 0xb2, 0x1b, 0xa5,
-	0x99, 0x0f, 0x9f, 0x36, 0x66, 0x7e, 0x31, 0x6e, 0x28, 0x4f, 0xc6, 0x0d, 0xe5, 0x83, 0x71, 0x43,
+	0xf1, 0xb2, 0xd7, 0xba, 0xf2, 0x09, 0x5f, 0xeb, 0xe2, 0x5e, 0x88, 0xff, 0x0c, 0xf2, 0x93, 0x2f,
-	0xf9, 0x70, 0xdc, 0x50, 0xfe, 0x31, 0x6e, 0x28, 0xbf, 0xfd, 0xa8, 0x31, 0xf3, 0xb0, 0x34, 0xbc,
+	0xeb, 0x85, 0xf8, 0x07, 0xa1, 0x34, 0x1e, 0xbe, 0x16, 0x64, 0x56, 0xc8, 0x30, 0xc3, 0x19, 0x52,
-	0xfd, 0xbf, 0x00, 0x00, 0x00, 0xff, 0xff, 0x8a, 0x69, 0x8a, 0x39, 0xfa, 0x26, 0x00, 0x00,
+	0xa9, 0x12, 0x12, 0xa4, 0xd0, 0x4f, 0xf4, 0x19, 0xf1, 0x5d, 0xc9, 0x67, 0xc4, 0xb5, 0x31, 0xa1,
+	0x3b, 0xf9, 0xc3, 0x9c, 0xf4, 0xda, 0x35, 0x77, 0xf2, 0x6b, 0x57, 0xe3, 0x2f, 0x0a, 0x78, 0x26,
+	0xf7, 0x4c, 0x81, 0xeb, 0x09, 0xb9, 0x76, 0x3d, 0x25, 0xd7, 0x9e, 0xcd, 0x35, 0x8c, 0x69, 0x36,
+	0x43, 0xfe, 0x66, 0x77, 0x6b, 0xec, 0x9b, 0x9d, 0x44, 0x8c, 0x8f, 0x7f, 0xbc, 0x6b, 0xaf, 0x3d,
+	0x7c, 0x54, 0x9b, 0xfa, 0xf8, 0x51, 0x6d, 0xea, 0x93, 0x47, 0xb5, 0xa9, 0x5f, 0x8e, 0x6a, 0xca,
+	0xc3, 0x51, 0x4d, 0xf9, 0x78, 0x54, 0x53, 0x3e, 0x19, 0xd5, 0x94, 0x7f, 0x8c, 0x6a, 0xca, 0x6f,
+	0x3f, 0xad, 0x4d, 0xdd, 0x2b, 0xf4, 0x6f, 0xfc, 0x3f, 0x00, 0x00, 0xff, 0xff, 0xc5, 0x7f, 0x6b,
+	0xc0, 0xb5, 0x28, 0x00, 0x00,
 }
 
 func (m *ControllerRevision) Marshal() (dAtA []byte, err error) {
@@ -2291,6 +2329,39 @@ func (m *StatefulSetList) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	return len(dAtA) - i, nil
 }
 
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	i -= len(m.WhenScaled)
+	copy(dAtA[i:], m.WhenScaled)
+	i = encodeVarintGenerated(dAtA, i, uint64(len(m.WhenScaled)))
+	i--
+	dAtA[i] = 0x12
+	i -= len(m.WhenDeleted)
+	copy(dAtA[i:], m.WhenDeleted)
+	i = encodeVarintGenerated(dAtA, i, uint64(len(m.WhenDeleted)))
+	i--
+	dAtA[i] = 0xa
+	return len(dAtA) - i, nil
+}
+
 func (m *StatefulSetSpec) Marshal() (dAtA []byte, err error) {
 	size := m.Size()
 	dAtA = make([]byte, size)
@@ -2311,6 +2382,18 @@ func (m *StatefulSetSpec) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	_ = i
 	var l int
 	_ = l
+	if m.PersistentVolumeClaimRetentionPolicy != nil {
+		{
+			size, err := m.PersistentVolumeClaimRetentionPolicy.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintGenerated(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x52
+	}
 	i = encodeVarintGenerated(dAtA, i, uint64(m.MinReadySeconds))
 	i--
 	dAtA[i] = 0x48
@@ -2955,6 +3038,19 @@ func (m *StatefulSetList) Size() (n int) {
 	return n
 }
 
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	l = len(m.WhenDeleted)
+	n += 1 + l + sovGenerated(uint64(l))
+	l = len(m.WhenScaled)
+	n += 1 + l + sovGenerated(uint64(l))
+	return n
+}
+
 func (m *StatefulSetSpec) Size() (n int) {
 	if m == nil {
 		return 0
@@ -2986,6 +3082,10 @@ func (m *StatefulSetSpec) Size() (n int) {
 		n += 1 + sovGenerated(uint64(*m.RevisionHistoryLimit))
 	}
 	n += 1 + sovGenerated(uint64(m.MinReadySeconds))
+	if m.PersistentVolumeClaimRetentionPolicy != nil {
+		l = m.PersistentVolumeClaimRetentionPolicy.Size()
+		n += 1 + l + sovGenerated(uint64(l))
+	}
 	return n
 }
 
@@ -3399,6 +3499,17 @@ func (this *StatefulSetList) String() string {
 	}, "")
 	return s
 }
+func (this *StatefulSetPersistentVolumeClaimRetentionPolicy) String() string {
+	if this == nil {
+		return "nil"
+	}
+	s := strings.Join([]string{`&StatefulSetPersistentVolumeClaimRetentionPolicy{`,
+		`WhenDeleted:` + fmt.Sprintf("%v", this.WhenDeleted) + `,`,
+		`WhenScaled:` + fmt.Sprintf("%v", this.WhenScaled) + `,`,
+		`}`,
+	}, "")
+	return s
+}
 func (this *StatefulSetSpec) String() string {
 	if this == nil {
 		return "nil"
@@ -3418,6 +3529,7 @@ func (this *StatefulSetSpec) String() string {
 		`UpdateStrategy:` + strings.Replace(strings.Replace(this.UpdateStrategy.String(), "StatefulSetUpdateStrategy", "StatefulSetUpdateStrategy", 1), `&`, ``, 1) + `,`,
 		`RevisionHistoryLimit:` + valueToStringGenerated(this.RevisionHistoryLimit) + `,`,
 		`MinReadySeconds:` + fmt.Sprintf("%v", this.MinReadySeconds) + `,`,
+		`PersistentVolumeClaimRetentionPolicy:` + strings.Replace(this.PersistentVolumeClaimRetentionPolicy.String(), "StatefulSetPersistentVolumeClaimRetentionPolicy", "StatefulSetPersistentVolumeClaimRetentionPolicy", 1) + `,`,
 		`}`,
 	}, "")
 	return s
@@ -7461,6 +7573,120 @@ func (m *StatefulSetList) Unmarshal(dAtA []byte) error {
 	}
 	return nil
 }
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowGenerated
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= uint64(b&0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: StatefulSetPersistentVolumeClaimRetentionPolicy: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: StatefulSetPersistentVolumeClaimRetentionPolicy: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field WhenDeleted", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowGenerated
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.WhenDeleted = PersistentVolumeClaimRetentionPolicyType(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		case 2:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field WhenScaled", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowGenerated
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.WhenScaled = PersistentVolumeClaimRetentionPolicyType(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipGenerated(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
 func (m *StatefulSetSpec) Unmarshal(dAtA []byte) error {
 	l := len(dAtA)
 	iNdEx := 0
@@ -7749,6 +7975,42 @@ func (m *StatefulSetSpec) Unmarshal(dAtA []byte) error {
 					break
 				}
 			}
+		case 10:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field PersistentVolumeClaimRetentionPolicy", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowGenerated
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if m.PersistentVolumeClaimRetentionPolicy == nil {
+				m.PersistentVolumeClaimRetentionPolicy = &StatefulSetPersistentVolumeClaimRetentionPolicy{}
+			}
+			if err := m.PersistentVolumeClaimRetentionPolicy.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipGenerated(dAtA[iNdEx:])

staging/src/k8s.io/api/apps/v1/generated.proto

@@ -611,6 +611,23 @@ message StatefulSetList {
   repeated StatefulSet items = 2;
 }
 
+// StatefulSetPersistentVolumeClaimRetentionPolicy describes the policy used for PVCs
+// created from the StatefulSet VolumeClaimTemplates.
+message StatefulSetPersistentVolumeClaimRetentionPolicy {
+  // WhenDeleted specifies what happens to PVCs created from StatefulSet
+  // VolumeClaimTemplates when the StatefulSet is deleted. The default policy
+  // of `Retain` causes PVCs to not be affected by StatefulSet deletion. The
+  // `Delete` policy causes those PVCs to be deleted.
+  optional string whenDeleted = 1;
+
+  // WhenScaled specifies what happens to PVCs created from StatefulSet
+  // VolumeClaimTemplates when the StatefulSet is scaled down. The default
+  // policy of `Retain` causes PVCs to not be affected by a scaledown. The
+  // `Delete` policy causes the associated PVCs for any excess pods above
+  // the replica count to be deleted.
+  optional string whenScaled = 2;
+}
+
 // A StatefulSetSpec is the specification of a StatefulSet.
 message StatefulSetSpec {
   // replicas is the desired number of replicas of the given Template.
@@ -677,6 +694,15 @@ message StatefulSetSpec {
   // This is an alpha field and requires enabling StatefulSetMinReadySeconds feature gate.
   // +optional
   optional int32 minReadySeconds = 9;
+
+  // persistentVolumeClaimRetentionPolicy describes the lifecycle of persistent
+  // volume claims created from volumeClaimTemplates. By default, all persistent
+  // volume claims are created as needed and retained until manually deleted. This
+  // policy allows the lifecycle to be altered, for example by deleting persistent
+  // volume claims when their stateful set is deleted, or when their pod is scaled
+  // down. This requires the StatefulSetAutoDeletePVC feature gate to be enabled,
+  // which is alpha.  +optional
+  optional StatefulSetPersistentVolumeClaimRetentionPolicy persistentVolumeClaimRetentionPolicy = 10;
 }
 
 // StatefulSetStatus represents the current state of a StatefulSet.

staging/src/k8s.io/api/apps/v1/types.go

@@ -226,7 +226,7 @@ type StatefulSetSpec struct {
 	// volume claims when their stateful set is deleted, or when their pod is scaled
 	// down. This requires the StatefulSetAutoDeletePVC feature gate to be enabled,
 	// which is alpha.  +optional
-	PersistentVolumeClaimRetentionPolicy *StatefulSetPersistentVolumeClaimRetentionPolicy `json:"persistentVolumeClaimRetentionPolicy,omitempty" protobuf:"bytes,9,opt,name=persistentVolumeClaimRetentionPolicy"`
+	PersistentVolumeClaimRetentionPolicy *StatefulSetPersistentVolumeClaimRetentionPolicy `json:"persistentVolumeClaimRetentionPolicy,omitempty" protobuf:"bytes,10,opt,name=persistentVolumeClaimRetentionPolicy"`
 }
 
 // StatefulSetStatus represents the current state of a StatefulSet.

staging/src/k8s.io/api/apps/v1/types_swagger_doc_generated.go

@@ -323,6 +323,16 @@ func (StatefulSetList) SwaggerDoc() map[string]string {
 	return map_StatefulSetList
 }
 
+var map_StatefulSetPersistentVolumeClaimRetentionPolicy = map[string]string{
+	"":            "StatefulSetPersistentVolumeClaimRetentionPolicy describes the policy used for PVCs created from the StatefulSet VolumeClaimTemplates.",
+	"whenDeleted": "WhenDeleted specifies what happens to PVCs created from StatefulSet VolumeClaimTemplates when the StatefulSet is deleted. The default policy of `Retain` causes PVCs to not be affected by StatefulSet deletion. The `Delete` policy causes those PVCs to be deleted.",
+	"whenScaled":  "WhenScaled specifies what happens to PVCs created from StatefulSet VolumeClaimTemplates when the StatefulSet is scaled down. The default policy of `Retain` causes PVCs to not be affected by a scaledown. The `Delete` policy causes the associated PVCs for any excess pods above the replica count to be deleted.",
+}
+
+func (StatefulSetPersistentVolumeClaimRetentionPolicy) SwaggerDoc() map[string]string {
+	return map_StatefulSetPersistentVolumeClaimRetentionPolicy
+}
+
 var map_StatefulSetSpec = map[string]string{
 	"":                                     "A StatefulSetSpec is the specification of a StatefulSet.",
 	"replicas":                             "replicas is the desired number of replicas of the given Template. These are replicas in the sense that they are instantiations of the same Template, but individual replicas also have a consistent identity. If unspecified, defaults to 1.",
@@ -334,6 +344,7 @@ var map_StatefulSetSpec = map[string]string{
 	"updateStrategy":                       "updateStrategy indicates the StatefulSetUpdateStrategy that will be employed to update Pods in the StatefulSet when a revision is made to Template.",
 	"revisionHistoryLimit":                 "revisionHistoryLimit is the maximum number of revisions that will be maintained in the StatefulSet's revision history. The revision history consists of all revisions not represented by a currently applied StatefulSetSpec version. The default value is 10.",
 	"minReadySeconds":                      "Minimum number of seconds for which a newly created pod should be ready without any of its container crashing for it to be considered available. Defaults to 0 (pod will be considered available as soon as it is ready) This is an alpha field and requires enabling StatefulSetMinReadySeconds feature gate.",
+	"persistentVolumeClaimRetentionPolicy": "persistentVolumeClaimRetentionPolicy describes the lifecycle of persistent volume claims created from volumeClaimTemplates. By default, all persistent volume claims are created as needed and retained until manually deleted. This policy allows the lifecycle to be altered, for example by deleting persistent volume claims when their stateful set is deleted, or when their pod is scaled down. This requires the StatefulSetAutoDeletePVC feature gate to be enabled, which is alpha.  +optional",
 }
 
 func (StatefulSetSpec) SwaggerDoc() map[string]string {

staging/src/k8s.io/api/apps/v1/zz_generated.deepcopy.go

@@ -688,6 +688,22 @@ func (in *StatefulSetList) DeepCopyObject() runtime.Object {
 	return nil
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *StatefulSetPersistentVolumeClaimRetentionPolicy) DeepCopyInto(out *StatefulSetPersistentVolumeClaimRetentionPolicy) {
+	*out = *in
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new StatefulSetPersistentVolumeClaimRetentionPolicy.
+func (in *StatefulSetPersistentVolumeClaimRetentionPolicy) DeepCopy() *StatefulSetPersistentVolumeClaimRetentionPolicy {
+	if in == nil {
+		return nil
+	}
+	out := new(StatefulSetPersistentVolumeClaimRetentionPolicy)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *StatefulSetSpec) DeepCopyInto(out *StatefulSetSpec) {
 	*out = *in
@@ -715,6 +731,11 @@ func (in *StatefulSetSpec) DeepCopyInto(out *StatefulSetSpec) {
 		*out = new(int32)
 		**out = **in
 	}
+	if in.PersistentVolumeClaimRetentionPolicy != nil {
+		in, out := &in.PersistentVolumeClaimRetentionPolicy, &out.PersistentVolumeClaimRetentionPolicy
+		*out = new(StatefulSetPersistentVolumeClaimRetentionPolicy)
+		**out = **in
+	}
 	return
 }
 

staging/src/k8s.io/api/apps/v1beta1/generated.pb.go

@@ -553,10 +553,40 @@ func (m *StatefulSetList) XXX_DiscardUnknown() {
 
 var xxx_messageInfo_StatefulSetList proto.InternalMessageInfo
 
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) Reset() {
+	*m = StatefulSetPersistentVolumeClaimRetentionPolicy{}
+}
+func (*StatefulSetPersistentVolumeClaimRetentionPolicy) ProtoMessage() {}
+func (*StatefulSetPersistentVolumeClaimRetentionPolicy) Descriptor() ([]byte, []int) {
+	return fileDescriptor_2a07313e8f66e805, []int{18}
+}
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	b = b[:cap(b)]
+	n, err := m.MarshalToSizedBuffer(b)
+	if err != nil {
+		return nil, err
+	}
+	return b[:n], nil
+}
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_StatefulSetPersistentVolumeClaimRetentionPolicy.Merge(m, src)
+}
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) XXX_Size() int {
+	return m.Size()
+}
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) XXX_DiscardUnknown() {
+	xxx_messageInfo_StatefulSetPersistentVolumeClaimRetentionPolicy.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_StatefulSetPersistentVolumeClaimRetentionPolicy proto.InternalMessageInfo
+
 func (m *StatefulSetSpec) Reset()      { *m = StatefulSetSpec{} }
 func (*StatefulSetSpec) ProtoMessage() {}
 func (*StatefulSetSpec) Descriptor() ([]byte, []int) {
-	return fileDescriptor_2a07313e8f66e805, []int{18}
+	return fileDescriptor_2a07313e8f66e805, []int{19}
 }
 func (m *StatefulSetSpec) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -584,7 +614,7 @@ var xxx_messageInfo_StatefulSetSpec proto.InternalMessageInfo
 func (m *StatefulSetStatus) Reset()      { *m = StatefulSetStatus{} }
 func (*StatefulSetStatus) ProtoMessage() {}
 func (*StatefulSetStatus) Descriptor() ([]byte, []int) {
-	return fileDescriptor_2a07313e8f66e805, []int{19}
+	return fileDescriptor_2a07313e8f66e805, []int{20}
 }
 func (m *StatefulSetStatus) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -612,7 +642,7 @@ var xxx_messageInfo_StatefulSetStatus proto.InternalMessageInfo
 func (m *StatefulSetUpdateStrategy) Reset()      { *m = StatefulSetUpdateStrategy{} }
 func (*StatefulSetUpdateStrategy) ProtoMessage() {}
 func (*StatefulSetUpdateStrategy) Descriptor() ([]byte, []int) {
-	return fileDescriptor_2a07313e8f66e805, []int{20}
+	return fileDescriptor_2a07313e8f66e805, []int{21}
 }
 func (m *StatefulSetUpdateStrategy) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -658,6 +688,7 @@ func init() {
 	proto.RegisterType((*StatefulSet)(nil), "k8s.io.api.apps.v1beta1.StatefulSet")
 	proto.RegisterType((*StatefulSetCondition)(nil), "k8s.io.api.apps.v1beta1.StatefulSetCondition")
 	proto.RegisterType((*StatefulSetList)(nil), "k8s.io.api.apps.v1beta1.StatefulSetList")
+	proto.RegisterType((*StatefulSetPersistentVolumeClaimRetentionPolicy)(nil), "k8s.io.api.apps.v1beta1.StatefulSetPersistentVolumeClaimRetentionPolicy")
 	proto.RegisterType((*StatefulSetSpec)(nil), "k8s.io.api.apps.v1beta1.StatefulSetSpec")
 	proto.RegisterType((*StatefulSetStatus)(nil), "k8s.io.api.apps.v1beta1.StatefulSetStatus")
 	proto.RegisterType((*StatefulSetUpdateStrategy)(nil), "k8s.io.api.apps.v1beta1.StatefulSetUpdateStrategy")
@@ -668,124 +699,130 @@ func init() {
 }
 
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+	0x31, 0xfc, 0x7a, 0x5a, 0xf1, 0xf3, 0xe5, 0x38, 0x14, 0xe1, 0xa8, 0x1e, 0x3a, 0x83, 0x15, 0xdb,
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+	0xea, 0x1e, 0x10, 0x93, 0xf4, 0x28, 0x9f, 0xae, 0xbc, 0x50, 0x0a, 0x42, 0xb7, 0xd0, 0x7a, 0xc7,
-	0x76, 0x33, 0x7b, 0x05, 0x76, 0xb3, 0x0b, 0xcb, 0x9a, 0xef, 0xba, 0xd4, 0x62, 0x19, 0x6e, 0x13,
+	0x9f, 0xa9, 0x8f, 0xd2, 0x2a, 0xcf, 0x38, 0x33, 0x4a, 0x2f, 0x8b, 0x24, 0xc8, 0x82, 0x44, 0x0e,
-	0x9d, 0xc5, 0x5e, 0x5a, 0x8c, 0xb3, 0xfa, 0x45, 0x04, 0xad, 0x7e, 0x45, 0x82, 0x96, 0x8c, 0x42,
+	0x54, 0xfa, 0x72, 0xca, 0x91, 0xfc, 0xd6, 0xfb, 0xe7, 0x6a, 0xbb, 0x48, 0x61, 0x9d, 0xc6, 0x2c,
-	0x0e, 0xd9, 0x41, 0xe6, 0xe6, 0xa3, 0x90, 0xb3, 0x76, 0x56, 0x9f, 0x0f, 0x18, 0x01, 0x6a, 0x84,
+	0xc3, 0x47, 0x2f, 0xbe, 0x8e, 0x13, 0x1e, 0x72, 0xf9, 0x6a, 0xf9, 0x7f, 0xe2, 0xab, 0x19, 0x04,
-	0xb0, 0x90, 0x1e, 0x30, 0x4e, 0x53, 0x52, 0x9c, 0xd1, 0x2e, 0x20, 0x3b, 0xcd, 0xaa, 0x64, 0x07,
+	0x7a, 0x61, 0x42, 0x02, 0xfd, 0x67, 0x05, 0x6e, 0xda, 0x05, 0x6a, 0xa9, 0x0a, 0xe2, 0x6e, 0xee,
-	0x91, 0x14, 0x15, 0x03, 0xd1, 0x26, 0xb6, 0xab, 0x94, 0x43, 0x75, 0x2e, 0x56, 0xc8, 0x42, 0x17,
+	0x17, 0xb9, 0x9b, 0x22, 0xb5, 0xd9, 0xda, 0x1c, 0x8f, 0xea, 0x37, 0x8b, 0x68, 0xe2, 0x42, 0xfb,
-	0xaf, 0xce, 0x42, 0xbb, 0x7f, 0x55, 0xe0, 0xc5, 0xd2, 0x82, 0x44, 0xbb, 0xa9, 0xe7, 0x7f, 0x3b,
+	0x6b, 0xfc, 0xae, 0x04, 0xd7, 0x53, 0xaf, 0x25, 0xfa, 0xd1, 0x05, 0x24, 0xf7, 0xc6, 0x73, 0x23,
-	0xf3, 0xfc, 0x7f, 0xaf, 0xd4, 0x30, 0x31, 0x03, 0xb8, 0xc5, 0x34, 0xed, 0xfd, 0x6a, 0x34, 0xad,
+	0xb8, 0x29, 0x76, 0x3a, 0x33, 0x01, 0x3b, 0xdd, 0x81, 0xe5, 0x4e, 0xdf, 0x71, 0xa8, 0xc9, 0x12,
-	0x80, 0x43, 0x5c, 0xce, 0xd7, 0xfa, 0xdb, 0x4f, 0x9e, 0x76, 0x66, 0xbe, 0x7e, 0xda, 0x99, 0xf9,
+	0xdc, 0x34, 0x08, 0xea, 0x6e, 0x5c, 0x8c, 0x93, 0xfa, 0x59, 0x04, 0xbb, 0x34, 0x21, 0xc1, 0x8e,
-	0xe6, 0x69, 0x67, 0xe6, 0x37, 0xd3, 0x8e, 0xf2, 0x64, 0xda, 0x51, 0xbe, 0x9e, 0x76, 0x94, 0x6f,
+	0xee, 0x42, 0x92, 0x24, 0xaf, 0x04, 0xd3, 0xbb, 0x90, 0x5c, 0x29, 0xa9, 0xcf, 0x07, 0x44, 0x0f,
-	0xa6, 0x1d, 0xe5, 0xef, 0xd3, 0x8e, 0xf2, 0xd5, 0xb7, 0x9d, 0x99, 0xcf, 0x16, 0xa4, 0xc7, 0xff,
+	0x35, 0x40, 0x98, 0x8f, 0x0f, 0x88, 0xa7, 0x31, 0x29, 0x4e, 0x68, 0x67, 0x90, 0xd5, 0x85, 0xa2,
-	0x04, 0x00, 0x00, 0xff, 0xff, 0xbd, 0x02, 0xfa, 0x27, 0xed, 0x1b, 0x00, 0x00,
+	0x64, 0x15, 0x91, 0x18, 0x95, 0x06, 0xd1, 0xef, 0xb6, 0x8a, 0xe4, 0x6e, 0x71, 0x2e, 0x9d, 0xf9,
+	0x2f, 0xc2, 0xe2, 0xe4, 0xff, 0x22, 0x34, 0xfe, 0xa2, 0xc0, 0x8b, 0xb9, 0x9d, 0x05, 0xed, 0xc4,
+	0xc6, 0xb7, 0xad, 0xc4, 0xf8, 0xf6, 0x9d, 0x5c, 0xc3, 0xc8, 0x0c, 0xe7, 0x64, 0xd3, 0xec, 0xf7,
+	0x8a, 0xd1, 0xec, 0x0c, 0x0e, 0x78, 0x39, 0xdf, 0x6e, 0x6d, 0x3d, 0x79, 0x5a, 0x9b, 0xfa, 0xf2,
+	0x69, 0x6d, 0xea, 0xab, 0xa7, 0xb5, 0xa9, 0x5f, 0x8e, 0x6b, 0xca, 0x93, 0x71, 0x4d, 0xf9, 0x72,
+	0x5c, 0x53, 0xbe, 0x1a, 0xd7, 0x94, 0xbf, 0x8f, 0x6b, 0xca, 0xaf, 0xbf, 0xae, 0x4d, 0x7d, 0x32,
+	0x2f, 0x3d, 0xfe, 0x37, 0x00, 0x00, 0xff, 0xff, 0x3d, 0xfc, 0xe0, 0xc3, 0xad, 0x1d, 0x00, 0x00,
 }
 
 func (m *ControllerRevision) Marshal() (dAtA []byte, err error) {
@@ -1687,6 +1724,39 @@ func (m *StatefulSetList) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	return len(dAtA) - i, nil
 }
 
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	i -= len(m.WhenScaled)
+	copy(dAtA[i:], m.WhenScaled)
+	i = encodeVarintGenerated(dAtA, i, uint64(len(m.WhenScaled)))
+	i--
+	dAtA[i] = 0x12
+	i -= len(m.WhenDeleted)
+	copy(dAtA[i:], m.WhenDeleted)
+	i = encodeVarintGenerated(dAtA, i, uint64(len(m.WhenDeleted)))
+	i--
+	dAtA[i] = 0xa
+	return len(dAtA) - i, nil
+}
+
 func (m *StatefulSetSpec) Marshal() (dAtA []byte, err error) {
 	size := m.Size()
 	dAtA = make([]byte, size)
@@ -1707,6 +1777,18 @@ func (m *StatefulSetSpec) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	_ = i
 	var l int
 	_ = l
+	if m.PersistentVolumeClaimRetentionPolicy != nil {
+		{
+			size, err := m.PersistentVolumeClaimRetentionPolicy.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintGenerated(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x52
+	}
 	i = encodeVarintGenerated(dAtA, i, uint64(m.MinReadySeconds))
 	i--
 	dAtA[i] = 0x48
@@ -2213,6 +2295,19 @@ func (m *StatefulSetList) Size() (n int) {
 	return n
 }
 
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	l = len(m.WhenDeleted)
+	n += 1 + l + sovGenerated(uint64(l))
+	l = len(m.WhenScaled)
+	n += 1 + l + sovGenerated(uint64(l))
+	return n
+}
+
 func (m *StatefulSetSpec) Size() (n int) {
 	if m == nil {
 		return 0
@@ -2244,6 +2339,10 @@ func (m *StatefulSetSpec) Size() (n int) {
 		n += 1 + sovGenerated(uint64(*m.RevisionHistoryLimit))
 	}
 	n += 1 + sovGenerated(uint64(m.MinReadySeconds))
+	if m.PersistentVolumeClaimRetentionPolicy != nil {
+		l = m.PersistentVolumeClaimRetentionPolicy.Size()
+		n += 1 + l + sovGenerated(uint64(l))
+	}
 	return n
 }
 
@@ -2559,6 +2658,17 @@ func (this *StatefulSetList) String() string {
 	}, "")
 	return s
 }
+func (this *StatefulSetPersistentVolumeClaimRetentionPolicy) String() string {
+	if this == nil {
+		return "nil"
+	}
+	s := strings.Join([]string{`&StatefulSetPersistentVolumeClaimRetentionPolicy{`,
+		`WhenDeleted:` + fmt.Sprintf("%v", this.WhenDeleted) + `,`,
+		`WhenScaled:` + fmt.Sprintf("%v", this.WhenScaled) + `,`,
+		`}`,
+	}, "")
+	return s
+}
 func (this *StatefulSetSpec) String() string {
 	if this == nil {
 		return "nil"
@@ -2578,6 +2688,7 @@ func (this *StatefulSetSpec) String() string {
 		`UpdateStrategy:` + strings.Replace(strings.Replace(this.UpdateStrategy.String(), "StatefulSetUpdateStrategy", "StatefulSetUpdateStrategy", 1), `&`, ``, 1) + `,`,
 		`RevisionHistoryLimit:` + valueToStringGenerated(this.RevisionHistoryLimit) + `,`,
 		`MinReadySeconds:` + fmt.Sprintf("%v", this.MinReadySeconds) + `,`,
+		`PersistentVolumeClaimRetentionPolicy:` + strings.Replace(this.PersistentVolumeClaimRetentionPolicy.String(), "StatefulSetPersistentVolumeClaimRetentionPolicy", "StatefulSetPersistentVolumeClaimRetentionPolicy", 1) + `,`,
 		`}`,
 	}, "")
 	return s
@@ -5436,6 +5547,120 @@ func (m *StatefulSetList) Unmarshal(dAtA []byte) error {
 	}
 	return nil
 }
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowGenerated
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= uint64(b&0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: StatefulSetPersistentVolumeClaimRetentionPolicy: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: StatefulSetPersistentVolumeClaimRetentionPolicy: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field WhenDeleted", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowGenerated
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.WhenDeleted = PersistentVolumeClaimRetentionPolicyType(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		case 2:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field WhenScaled", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowGenerated
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.WhenScaled = PersistentVolumeClaimRetentionPolicyType(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipGenerated(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
 func (m *StatefulSetSpec) Unmarshal(dAtA []byte) error {
 	l := len(dAtA)
 	iNdEx := 0
@@ -5724,6 +5949,42 @@ func (m *StatefulSetSpec) Unmarshal(dAtA []byte) error {
 					break
 				}
 			}
+		case 10:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field PersistentVolumeClaimRetentionPolicy", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowGenerated
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if m.PersistentVolumeClaimRetentionPolicy == nil {
+				m.PersistentVolumeClaimRetentionPolicy = &StatefulSetPersistentVolumeClaimRetentionPolicy{}
+			}
+			if err := m.PersistentVolumeClaimRetentionPolicy.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipGenerated(dAtA[iNdEx:])

staging/src/k8s.io/api/apps/v1beta1/generated.proto

@@ -367,6 +367,23 @@ message StatefulSetList {
   repeated StatefulSet items = 2;
 }
 
+// StatefulSetPersistentVolumeClaimRetentionPolicy describes the policy used for PVCs
+// created from the StatefulSet VolumeClaimTemplates.
+message StatefulSetPersistentVolumeClaimRetentionPolicy {
+  // WhenDeleted specifies what happens to PVCs created from StatefulSet
+  // VolumeClaimTemplates when the StatefulSet is deleted. The default policy
+  // of `Retain` causes PVCs to not be affected by StatefulSet deletion. The
+  // `Delete` policy causes those PVCs to be deleted.
+  optional string whenDeleted = 1;
+
+  // WhenScaled specifies what happens to PVCs created from StatefulSet
+  // VolumeClaimTemplates when the StatefulSet is scaled down. The default
+  // policy of `Retain` causes PVCs to not be affected by a scaledown. The
+  // `Delete` policy causes the associated PVCs for any excess pods above
+  // the replica count to be deleted.
+  optional string whenScaled = 2;
+}
+
 // A StatefulSetSpec is the specification of a StatefulSet.
 message StatefulSetSpec {
   // replicas is the desired number of replicas of the given Template.
@@ -434,6 +451,12 @@ message StatefulSetSpec {
   // This is an alpha field and requires enabling StatefulSetMinReadySeconds feature gate.
   // +optional
   optional int32 minReadySeconds = 9;
+
+  // PersistentVolumeClaimRetentionPolicy describes the policy used for PVCs created from
+  // the StatefulSet VolumeClaimTemplates. This requires the
+  // StatefulSetAutoDeletePVC feature gate to be enabled, which is alpha.
+  // +optional
+  optional StatefulSetPersistentVolumeClaimRetentionPolicy persistentVolumeClaimRetentionPolicy = 10;
 }
 
 // StatefulSetStatus represents the current state of a StatefulSet.

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

@@ -227,6 +227,16 @@ func (StatefulSetList) SwaggerDoc() map[string]string {
 	return map_StatefulSetList
 }
 
+var map_StatefulSetPersistentVolumeClaimRetentionPolicy = map[string]string{
+	"":            "StatefulSetPersistentVolumeClaimRetentionPolicy describes the policy used for PVCs created from the StatefulSet VolumeClaimTemplates.",
+	"whenDeleted": "WhenDeleted specifies what happens to PVCs created from StatefulSet VolumeClaimTemplates when the StatefulSet is deleted. The default policy of `Retain` causes PVCs to not be affected by StatefulSet deletion. The `Delete` policy causes those PVCs to be deleted.",
+	"whenScaled":  "WhenScaled specifies what happens to PVCs created from StatefulSet VolumeClaimTemplates when the StatefulSet is scaled down. The default policy of `Retain` causes PVCs to not be affected by a scaledown. The `Delete` policy causes the associated PVCs for any excess pods above the replica count to be deleted.",
+}
+
+func (StatefulSetPersistentVolumeClaimRetentionPolicy) SwaggerDoc() map[string]string {
+	return map_StatefulSetPersistentVolumeClaimRetentionPolicy
+}
+
 var map_StatefulSetSpec = map[string]string{
 	"":                                     "A StatefulSetSpec is the specification of a StatefulSet.",
 	"replicas":                             "replicas is the desired number of replicas of the given Template. These are replicas in the sense that they are instantiations of the same Template, but individual replicas also have a consistent identity. If unspecified, defaults to 1.",
@@ -238,6 +248,7 @@ var map_StatefulSetSpec = map[string]string{
 	"updateStrategy":                       "updateStrategy indicates the StatefulSetUpdateStrategy that will be employed to update Pods in the StatefulSet when a revision is made to Template.",
 	"revisionHistoryLimit":                 "revisionHistoryLimit is the maximum number of revisions that will be maintained in the StatefulSet's revision history. The revision history consists of all revisions not represented by a currently applied StatefulSetSpec version. The default value is 10.",
 	"minReadySeconds":                      "Minimum number of seconds for which a newly created pod should be ready without any of its container crashing for it to be considered available. Defaults to 0 (pod will be considered available as soon as it is ready) This is an alpha field and requires enabling StatefulSetMinReadySeconds feature gate.",
+	"persistentVolumeClaimRetentionPolicy": "PersistentVolumeClaimRetentionPolicy describes the policy used for PVCs created from the StatefulSet VolumeClaimTemplates. This requires the StatefulSetAutoDeletePVC feature gate to be enabled, which is alpha.",
 }
 
 func (StatefulSetSpec) SwaggerDoc() map[string]string {

staging/src/k8s.io/api/apps/v1beta1/zz_generated.deepcopy.go

@@ -500,6 +500,22 @@ func (in *StatefulSetList) DeepCopyObject() runtime.Object {
 	return nil
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *StatefulSetPersistentVolumeClaimRetentionPolicy) DeepCopyInto(out *StatefulSetPersistentVolumeClaimRetentionPolicy) {
+	*out = *in
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new StatefulSetPersistentVolumeClaimRetentionPolicy.
+func (in *StatefulSetPersistentVolumeClaimRetentionPolicy) DeepCopy() *StatefulSetPersistentVolumeClaimRetentionPolicy {
+	if in == nil {
+		return nil
+	}
+	out := new(StatefulSetPersistentVolumeClaimRetentionPolicy)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *StatefulSetSpec) DeepCopyInto(out *StatefulSetSpec) {
 	*out = *in
@@ -527,6 +543,11 @@ func (in *StatefulSetSpec) DeepCopyInto(out *StatefulSetSpec) {
 		*out = new(int32)
 		**out = **in
 	}
+	if in.PersistentVolumeClaimRetentionPolicy != nil {
+		in, out := &in.PersistentVolumeClaimRetentionPolicy, &out.PersistentVolumeClaimRetentionPolicy
+		*out = new(StatefulSetPersistentVolumeClaimRetentionPolicy)
+		**out = **in
+	}
 	return
 }
 

staging/src/k8s.io/api/apps/v1beta2/generated.pb.go

@@ -833,10 +833,40 @@ func (m *StatefulSetList) XXX_DiscardUnknown() {
 
 var xxx_messageInfo_StatefulSetList proto.InternalMessageInfo
 
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) Reset() {
+	*m = StatefulSetPersistentVolumeClaimRetentionPolicy{}
+}
+func (*StatefulSetPersistentVolumeClaimRetentionPolicy) ProtoMessage() {}
+func (*StatefulSetPersistentVolumeClaimRetentionPolicy) Descriptor() ([]byte, []int) {
+	return fileDescriptor_42fe616264472f7e, []int{28}
+}
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) XXX_Unmarshal(b []byte) error {
+	return m.Unmarshal(b)
+}
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	b = b[:cap(b)]
+	n, err := m.MarshalToSizedBuffer(b)
+	if err != nil {
+		return nil, err
+	}
+	return b[:n], nil
+}
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_StatefulSetPersistentVolumeClaimRetentionPolicy.Merge(m, src)
+}
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) XXX_Size() int {
+	return m.Size()
+}
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) XXX_DiscardUnknown() {
+	xxx_messageInfo_StatefulSetPersistentVolumeClaimRetentionPolicy.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_StatefulSetPersistentVolumeClaimRetentionPolicy proto.InternalMessageInfo
+
 func (m *StatefulSetSpec) Reset()      { *m = StatefulSetSpec{} }
 func (*StatefulSetSpec) ProtoMessage() {}
 func (*StatefulSetSpec) Descriptor() ([]byte, []int) {
-	return fileDescriptor_42fe616264472f7e, []int{28}
+	return fileDescriptor_42fe616264472f7e, []int{29}
 }
 func (m *StatefulSetSpec) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -864,7 +894,7 @@ var xxx_messageInfo_StatefulSetSpec proto.InternalMessageInfo
 func (m *StatefulSetStatus) Reset()      { *m = StatefulSetStatus{} }
 func (*StatefulSetStatus) ProtoMessage() {}
 func (*StatefulSetStatus) Descriptor() ([]byte, []int) {
-	return fileDescriptor_42fe616264472f7e, []int{29}
+	return fileDescriptor_42fe616264472f7e, []int{30}
 }
 func (m *StatefulSetStatus) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -892,7 +922,7 @@ var xxx_messageInfo_StatefulSetStatus proto.InternalMessageInfo
 func (m *StatefulSetUpdateStrategy) Reset()      { *m = StatefulSetUpdateStrategy{} }
 func (*StatefulSetUpdateStrategy) ProtoMessage() {}
 func (*StatefulSetUpdateStrategy) Descriptor() ([]byte, []int) {
-	return fileDescriptor_42fe616264472f7e, []int{30}
+	return fileDescriptor_42fe616264472f7e, []int{31}
 }
 func (m *StatefulSetUpdateStrategy) XXX_Unmarshal(b []byte) error {
 	return m.Unmarshal(b)
@@ -947,6 +977,7 @@ func init() {
 	proto.RegisterType((*StatefulSet)(nil), "k8s.io.api.apps.v1beta2.StatefulSet")
 	proto.RegisterType((*StatefulSetCondition)(nil), "k8s.io.api.apps.v1beta2.StatefulSetCondition")
 	proto.RegisterType((*StatefulSetList)(nil), "k8s.io.api.apps.v1beta2.StatefulSetList")
+	proto.RegisterType((*StatefulSetPersistentVolumeClaimRetentionPolicy)(nil), "k8s.io.api.apps.v1beta2.StatefulSetPersistentVolumeClaimRetentionPolicy")
 	proto.RegisterType((*StatefulSetSpec)(nil), "k8s.io.api.apps.v1beta2.StatefulSetSpec")
 	proto.RegisterType((*StatefulSetStatus)(nil), "k8s.io.api.apps.v1beta2.StatefulSetStatus")
 	proto.RegisterType((*StatefulSetUpdateStrategy)(nil), "k8s.io.api.apps.v1beta2.StatefulSetUpdateStrategy")
@@ -957,144 +988,150 @@ func init() {
 }
 
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+	0xad, 0xa8, 0x15, 0x57, 0x61, 0xf7, 0xee, 0x84, 0x61, 0x9e, 0x04, 0x49, 0x90, 0xd0, 0x8c, 0x7d,
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+	0x63, 0x37, 0xc9, 0xfc, 0x04, 0x37, 0xc9, 0x0d, 0x30, 0x2f, 0xfe, 0x1f, 0x20, 0x72, 0x11, 0xf5,
-	0xe4, 0x69, 0xf3, 0xdc, 0x27, 0x4f, 0x9b, 0xe7, 0x3e, 0x7b, 0xda, 0x3c, 0xf7, 0xab, 0x51, 0x53,
+	0x36, 0x76, 0x33, 0x2c, 0x46, 0x51, 0xfd, 0xa4, 0xc7, 0xe3, 0xe2, 0x84, 0x8f, 0xc7, 0x41, 0x2f,
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+	0xc4, 0xff, 0xb7, 0x39, 0x65, 0x18, 0xf7, 0x42, 0xfc, 0x9b, 0x5b, 0x54, 0x9f, 0x91, 0x44, 0x07,
-	0xf0, 0xf3, 0xe6, 0xb9, 0xf7, 0x27, 0xc5, 0x88, 0xff, 0x0d, 0x00, 0x00, 0xff, 0xff, 0xda, 0x5d,
+	0xd5, 0x43, 0x98, 0x0e, 0x93, 0xc4, 0x83, 0x90, 0x14, 0x45, 0xb4, 0xbf, 0xd4, 0x37, 0x6f, 0x9c,
-	0xee, 0xc9, 0xd4, 0x29, 0x00, 0x00,
+	0xf0, 0xcd, 0x7b, 0x2d, 0x4b, 0xfe, 0x66, 0x7f, 0x27, 0x4e, 0xbc, 0xf1, 0xcf, 0x4c, 0x7e, 0xe3,
+	0x97, 0xff, 0x22, 0x81, 0xe7, 0x52, 0x4f, 0x17, 0xb8, 0x11, 0xa2, 0x70, 0x6b, 0x11, 0x0a, 0xf7,
+	0xbd, 0x54, 0xc3, 0x00, 0x8f, 0x33, 0x93, 0x9f, 0x90, 0xdf, 0xc8, 0xf6, 0x84, 0x9c, 0x70, 0x0f,
+	0x1c, 0xff, 0x96, 0xdc, 0x5c, 0x7b, 0xf4, 0xb8, 0x7a, 0xe6, 0xd3, 0xc7, 0xd5, 0x33, 0x9f, 0x3f,
+	0xae, 0x9e, 0xf9, 0xc5, 0xa8, 0x2a, 0x3d, 0x1a, 0x55, 0xa5, 0x4f, 0x47, 0x55, 0xe9, 0xf3, 0x51,
+	0x55, 0xfa, 0xdb, 0xa8, 0x2a, 0xfd, 0xe6, 0x8b, 0xea, 0x99, 0xf7, 0xa7, 0xc5, 0x8c, 0xff, 0x0d,
+	0x00, 0x00, 0xff, 0xff, 0x3e, 0x13, 0x3b, 0xc7, 0x94, 0x2b, 0x00, 0x00,
 }
 
 func (m *ControllerRevision) Marshal() (dAtA []byte, err error) {
@@ -2523,6 +2560,39 @@ func (m *StatefulSetList) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	return len(dAtA) - i, nil
 }
 
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalToSizedBuffer(dAtA[:size])
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) MarshalTo(dAtA []byte) (int, error) {
+	size := m.Size()
+	return m.MarshalToSizedBuffer(dAtA[:size])
+}
+
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) MarshalToSizedBuffer(dAtA []byte) (int, error) {
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	i -= len(m.WhenScaled)
+	copy(dAtA[i:], m.WhenScaled)
+	i = encodeVarintGenerated(dAtA, i, uint64(len(m.WhenScaled)))
+	i--
+	dAtA[i] = 0x12
+	i -= len(m.WhenDeleted)
+	copy(dAtA[i:], m.WhenDeleted)
+	i = encodeVarintGenerated(dAtA, i, uint64(len(m.WhenDeleted)))
+	i--
+	dAtA[i] = 0xa
+	return len(dAtA) - i, nil
+}
+
 func (m *StatefulSetSpec) Marshal() (dAtA []byte, err error) {
 	size := m.Size()
 	dAtA = make([]byte, size)
@@ -2543,6 +2613,18 @@ func (m *StatefulSetSpec) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	_ = i
 	var l int
 	_ = l
+	if m.PersistentVolumeClaimRetentionPolicy != nil {
+		{
+			size, err := m.PersistentVolumeClaimRetentionPolicy.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintGenerated(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x52
+	}
 	i = encodeVarintGenerated(dAtA, i, uint64(m.MinReadySeconds))
 	i--
 	dAtA[i] = 0x48
@@ -3232,6 +3314,19 @@ func (m *StatefulSetList) Size() (n int) {
 	return n
 }
 
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) Size() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	l = len(m.WhenDeleted)
+	n += 1 + l + sovGenerated(uint64(l))
+	l = len(m.WhenScaled)
+	n += 1 + l + sovGenerated(uint64(l))
+	return n
+}
+
 func (m *StatefulSetSpec) Size() (n int) {
 	if m == nil {
 		return 0
@@ -3263,6 +3358,10 @@ func (m *StatefulSetSpec) Size() (n int) {
 		n += 1 + sovGenerated(uint64(*m.RevisionHistoryLimit))
 	}
 	n += 1 + sovGenerated(uint64(m.MinReadySeconds))
+	if m.PersistentVolumeClaimRetentionPolicy != nil {
+		l = m.PersistentVolumeClaimRetentionPolicy.Size()
+		n += 1 + l + sovGenerated(uint64(l))
+	}
 	return n
 }
 
@@ -3720,6 +3819,17 @@ func (this *StatefulSetList) String() string {
 	}, "")
 	return s
 }
+func (this *StatefulSetPersistentVolumeClaimRetentionPolicy) String() string {
+	if this == nil {
+		return "nil"
+	}
+	s := strings.Join([]string{`&StatefulSetPersistentVolumeClaimRetentionPolicy{`,
+		`WhenDeleted:` + fmt.Sprintf("%v", this.WhenDeleted) + `,`,
+		`WhenScaled:` + fmt.Sprintf("%v", this.WhenScaled) + `,`,
+		`}`,
+	}, "")
+	return s
+}
 func (this *StatefulSetSpec) String() string {
 	if this == nil {
 		return "nil"
@@ -3739,6 +3849,7 @@ func (this *StatefulSetSpec) String() string {
 		`UpdateStrategy:` + strings.Replace(strings.Replace(this.UpdateStrategy.String(), "StatefulSetUpdateStrategy", "StatefulSetUpdateStrategy", 1), `&`, ``, 1) + `,`,
 		`RevisionHistoryLimit:` + valueToStringGenerated(this.RevisionHistoryLimit) + `,`,
 		`MinReadySeconds:` + fmt.Sprintf("%v", this.MinReadySeconds) + `,`,
+		`PersistentVolumeClaimRetentionPolicy:` + strings.Replace(this.PersistentVolumeClaimRetentionPolicy.String(), "StatefulSetPersistentVolumeClaimRetentionPolicy", "StatefulSetPersistentVolumeClaimRetentionPolicy", 1) + `,`,
 		`}`,
 	}, "")
 	return s
@@ -8228,6 +8339,120 @@ func (m *StatefulSetList) Unmarshal(dAtA []byte) error {
 	}
 	return nil
 }
+func (m *StatefulSetPersistentVolumeClaimRetentionPolicy) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowGenerated
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= uint64(b&0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: StatefulSetPersistentVolumeClaimRetentionPolicy: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: StatefulSetPersistentVolumeClaimRetentionPolicy: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field WhenDeleted", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowGenerated
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.WhenDeleted = PersistentVolumeClaimRetentionPolicyType(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		case 2:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field WhenScaled", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowGenerated
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.WhenScaled = PersistentVolumeClaimRetentionPolicyType(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipGenerated(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
 func (m *StatefulSetSpec) Unmarshal(dAtA []byte) error {
 	l := len(dAtA)
 	iNdEx := 0
@@ -8516,6 +8741,42 @@ func (m *StatefulSetSpec) Unmarshal(dAtA []byte) error {
 					break
 				}
 			}
+		case 10:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field PersistentVolumeClaimRetentionPolicy", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowGenerated
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= int(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			postIndex := iNdEx + msglen
+			if postIndex < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if m.PersistentVolumeClaimRetentionPolicy == nil {
+				m.PersistentVolumeClaimRetentionPolicy = &StatefulSetPersistentVolumeClaimRetentionPolicy{}
+			}
+			if err := m.PersistentVolumeClaimRetentionPolicy.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipGenerated(dAtA[iNdEx:])

staging/src/k8s.io/api/apps/v1beta2/generated.proto

@@ -656,6 +656,23 @@ message StatefulSetList {
   repeated StatefulSet items = 2;
 }
 
+// StatefulSetPersistentVolumeClaimRetentionPolicy describes the policy used for PVCs
+// created from the StatefulSet VolumeClaimTemplates.
+message StatefulSetPersistentVolumeClaimRetentionPolicy {
+  // WhenDeleted specifies what happens to PVCs created from StatefulSet
+  // VolumeClaimTemplates when the StatefulSet is deleted. The default policy
+  // of `Retain` causes PVCs to not be affected by StatefulSet deletion. The
+  // `Delete` policy causes those PVCs to be deleted.
+  optional string whenDeleted = 1;
+
+  // WhenScaled specifies what happens to PVCs created from StatefulSet
+  // VolumeClaimTemplates when the StatefulSet is scaled down. The default
+  // policy of `Retain` causes PVCs to not be affected by a scaledown. The
+  // `Delete` policy causes the associated PVCs for any excess pods above
+  // the replica count to be deleted.
+  optional string whenScaled = 2;
+}
+
 // A StatefulSetSpec is the specification of a StatefulSet.
 message StatefulSetSpec {
   // replicas is the desired number of replicas of the given Template.
@@ -722,6 +739,12 @@ message StatefulSetSpec {
   // This is an alpha field and requires enabling StatefulSetMinReadySeconds feature gate.
   // +optional
   optional int32 minReadySeconds = 9;
+
+  // PersistentVolumeClaimRetentionPolicy describes the policy used for PVCs created from
+  // the StatefulSet VolumeClaimTemplates. This requires the
+  // StatefulSetAutoDeletePVC feature gate to be enabled, which is alpha.
+  // +optional
+  optional StatefulSetPersistentVolumeClaimRetentionPolicy persistentVolumeClaimRetentionPolicy = 10;
 }
 
 // StatefulSetStatus represents the current state of a StatefulSet.

staging/src/k8s.io/api/apps/v1beta2/types_swagger_doc_generated.go

@@ -351,6 +351,16 @@ func (StatefulSetList) SwaggerDoc() map[string]string {
 	return map_StatefulSetList
 }
 
+var map_StatefulSetPersistentVolumeClaimRetentionPolicy = map[string]string{
+	"":            "StatefulSetPersistentVolumeClaimRetentionPolicy describes the policy used for PVCs created from the StatefulSet VolumeClaimTemplates.",
+	"whenDeleted": "WhenDeleted specifies what happens to PVCs created from StatefulSet VolumeClaimTemplates when the StatefulSet is deleted. The default policy of `Retain` causes PVCs to not be affected by StatefulSet deletion. The `Delete` policy causes those PVCs to be deleted.",
+	"whenScaled":  "WhenScaled specifies what happens to PVCs created from StatefulSet VolumeClaimTemplates when the StatefulSet is scaled down. The default policy of `Retain` causes PVCs to not be affected by a scaledown. The `Delete` policy causes the associated PVCs for any excess pods above the replica count to be deleted.",
+}
+
+func (StatefulSetPersistentVolumeClaimRetentionPolicy) SwaggerDoc() map[string]string {
+	return map_StatefulSetPersistentVolumeClaimRetentionPolicy
+}
+
 var map_StatefulSetSpec = map[string]string{
 	"":                                     "A StatefulSetSpec is the specification of a StatefulSet.",
 	"replicas":                             "replicas is the desired number of replicas of the given Template. These are replicas in the sense that they are instantiations of the same Template, but individual replicas also have a consistent identity. If unspecified, defaults to 1.",
@@ -362,6 +372,7 @@ var map_StatefulSetSpec = map[string]string{
 	"updateStrategy":                       "updateStrategy indicates the StatefulSetUpdateStrategy that will be employed to update Pods in the StatefulSet when a revision is made to Template.",
 	"revisionHistoryLimit":                 "revisionHistoryLimit is the maximum number of revisions that will be maintained in the StatefulSet's revision history. The revision history consists of all revisions not represented by a currently applied StatefulSetSpec version. The default value is 10.",
 	"minReadySeconds":                      "Minimum number of seconds for which a newly created pod should be ready without any of its container crashing for it to be considered available. Defaults to 0 (pod will be considered available as soon as it is ready) This is an alpha field and requires enabling StatefulSetMinReadySeconds feature gate.",
+	"persistentVolumeClaimRetentionPolicy": "PersistentVolumeClaimRetentionPolicy describes the policy used for PVCs created from the StatefulSet VolumeClaimTemplates. This requires the StatefulSetAutoDeletePVC feature gate to be enabled, which is alpha.",
 }
 
 func (StatefulSetSpec) SwaggerDoc() map[string]string {

staging/src/k8s.io/api/apps/v1beta2/zz_generated.deepcopy.go

@@ -755,6 +755,22 @@ func (in *StatefulSetList) DeepCopyObject() runtime.Object {
 	return nil
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *StatefulSetPersistentVolumeClaimRetentionPolicy) DeepCopyInto(out *StatefulSetPersistentVolumeClaimRetentionPolicy) {
+	*out = *in
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new StatefulSetPersistentVolumeClaimRetentionPolicy.
+func (in *StatefulSetPersistentVolumeClaimRetentionPolicy) DeepCopy() *StatefulSetPersistentVolumeClaimRetentionPolicy {
+	if in == nil {
+		return nil
+	}
+	out := new(StatefulSetPersistentVolumeClaimRetentionPolicy)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *StatefulSetSpec) DeepCopyInto(out *StatefulSetSpec) {
 	*out = *in
@@ -782,6 +798,11 @@ func (in *StatefulSetSpec) DeepCopyInto(out *StatefulSetSpec) {
 		*out = new(int32)
 		**out = **in
 	}
+	if in.PersistentVolumeClaimRetentionPolicy != nil {
+		in, out := &in.PersistentVolumeClaimRetentionPolicy, &out.PersistentVolumeClaimRetentionPolicy
+		*out = new(StatefulSetPersistentVolumeClaimRetentionPolicy)
+		**out = **in
+	}
 	return
 }
 

staging/src/k8s.io/api/testdata/HEAD/apps.v1.StatefulSet.json

@@ -1693,26 +1693,30 @@
       }
     },
     "revisionHistoryLimit": -1166275743,
-    "minReadySeconds": -1056262432
+    "minReadySeconds": -1056262432,
+    "persistentVolumeClaimRetentionPolicy": {
+      "whenDeleted": "/Ş槀墺=Ĉ鳟/d",
+      "whenScaled": "á"
+    }
   },
   "status": {
-    "observedGeneration": -3770279213092072518,
+    "observedGeneration": 5897193066236579633,
-    "replicas": -1669166259,
+    "replicas": 1442750499,
-    "readyReplicas": -175399547,
+    "readyReplicas": -1190434752,
-    "currentReplicas": 223338274,
+    "currentReplicas": -1929177074,
-    "updatedReplicas": -1279136912,
+    "updatedReplicas": -690843774,
     "currentRevision": "538",
     "updateRevision": "539",
-    "collisionCount": 1222237461,
+    "collisionCount": 1329525670,
     "conditions": [
       {
-        "type": "壣V礆á¤拈tY",
+        "type": "\u0026嬜Š\u0026?鳢.ǀŭ瘢",
-        "status": "飼蒱鄆\u0026嬜Š\u0026?鳢.ǀŭ瘢颦z",
+        "status": "Z氞唬蹵ɥeȿĦ`垨Džɞ堹ǖ*Oɑ埩6",
-        "lastTransitionTime": "2368-07-30T22:05:09Z",
+        "lastTransitionTime": "2881-11-22T04:01:01Z",
         "reason": "540",
         "message": "541"
       }
     ],
-    "availableReplicas": -1174483980
+    "availableReplicas": -1889018254
   }
 }

staging/src/k8s.io/api/testdata/HEAD/apps.v1.StatefulSet.yaml

@@ -32,6 +32,9 @@ metadata:
   uid: "7"
 spec:
   minReadySeconds: -1056262432
+  persistentVolumeClaimRetentionPolicy:
+    whenDeleted: /Ş槀墺=Ĉ鳟/d
+    whenScaled: á
   podManagementPolicy: Ȍ%ÿ¼璤ňɈ
   replicas: 896585016
   revisionHistoryLimit: -1166275743
@@ -1164,18 +1167,18 @@ spec:
       phase: ñƍU烈 źfjǰɪ嘞
       resizeStatus: ʨɺC`牯
 status:
-  availableReplicas: -1174483980
+  availableReplicas: -1889018254
-  collisionCount: 1222237461
+  collisionCount: 1329525670
   conditions:
-  - lastTransitionTime: "2368-07-30T22:05:09Z"
+  - lastTransitionTime: "2881-11-22T04:01:01Z"
     message: "541"
     reason: "540"
-    status: 飼蒱鄆&嬜Š&?鳢.ǀŭ瘢颦z
+    status: Z氞唬蹵ɥeȿĦ`垨Džɞ堹ǖ*Oɑ埩6
-    type: 壣V礆á¤拈tY
+    type: '&嬜Š&?鳢.ǀŭ瘢'
-  currentReplicas: 223338274
+  currentReplicas: -1929177074
   currentRevision: "538"
-  observedGeneration: -3770279213092072518
+  observedGeneration: 5897193066236579633
-  readyReplicas: -175399547
+  readyReplicas: -1190434752
-  replicas: -1669166259
+  replicas: 1442750499
   updateRevision: "539"
-  updatedReplicas: -1279136912
+  updatedReplicas: -690843774

staging/src/k8s.io/api/testdata/HEAD/apps.v1beta1.StatefulSet.json

@@ -1693,26 +1693,30 @@
       }
     },
     "revisionHistoryLimit": -1166275743,
-    "minReadySeconds": -1056262432
+    "minReadySeconds": -1056262432,
+    "persistentVolumeClaimRetentionPolicy": {
+      "whenDeleted": "/Ş槀墺=Ĉ鳟/d",
+      "whenScaled": "á"
+    }
   },
   "status": {
-    "observedGeneration": 1124654959171263717,
+    "observedGeneration": 6696165662757041544,
-    "replicas": -1775998279,
+    "replicas": -629510776,
-    "readyReplicas": 233229473,
+    "readyReplicas": -69450448,
-    "currentReplicas": 99917513,
+    "currentReplicas": -212409426,
-    "updatedReplicas": 421164481,
+    "updatedReplicas": 17761427,
     "currentRevision": "538",
     "updateRevision": "539",
-    "collisionCount": -1137929768,
+    "collisionCount": -168103644,
     "conditions": [
       {
-        "type": "/d\u0026蒡榤Ⱦ盜ŭ飼蒱鄆",
+        "type": "",
-        "status": "",
+        "status": "嬜Š\u0026?鳢.ǀŭ瘢颦z疵",
-        "lastTransitionTime": "2358-03-12T13:17:54Z",
+        "lastTransitionTime": "2455-07-16T22:37:15Z",
         "reason": "540",
         "message": "541"
       }
     ],
-    "availableReplicas": 171558604
+    "availableReplicas": 2136031303
   }
 }

staging/src/k8s.io/api/testdata/HEAD/apps.v1beta1.StatefulSet.yaml

@@ -32,6 +32,9 @@ metadata:
   uid: "7"
 spec:
   minReadySeconds: -1056262432
+  persistentVolumeClaimRetentionPolicy:
+    whenDeleted: /Ş槀墺=Ĉ鳟/d
+    whenScaled: á
   podManagementPolicy: Ȍ%ÿ¼璤ňɈ
   replicas: 896585016
   revisionHistoryLimit: -1166275743
@@ -1164,18 +1167,18 @@ spec:
       phase: ñƍU烈 źfjǰɪ嘞
       resizeStatus: ʨɺC`牯
 status:
-  availableReplicas: 171558604
+  availableReplicas: 2136031303
-  collisionCount: -1137929768
+  collisionCount: -168103644
   conditions:
-  - lastTransitionTime: "2358-03-12T13:17:54Z"
+  - lastTransitionTime: "2455-07-16T22:37:15Z"
     message: "541"
     reason: "540"
-    status: ""
+    status: 嬜Š&?鳢.ǀŭ瘢颦z疵
-    type: /d&蒡榤Ⱦ盜ŭ飼蒱鄆
+    type: ""
-  currentReplicas: 99917513
+  currentReplicas: -212409426
   currentRevision: "538"
-  observedGeneration: 1124654959171263717
+  observedGeneration: 6696165662757041544
-  readyReplicas: 233229473
+  readyReplicas: -69450448
-  replicas: -1775998279
+  replicas: -629510776
   updateRevision: "539"
-  updatedReplicas: 421164481
+  updatedReplicas: 17761427

staging/src/k8s.io/api/testdata/HEAD/apps.v1beta2.StatefulSet.json

@@ -1693,26 +1693,30 @@
       }
     },
     "revisionHistoryLimit": -1166275743,
-    "minReadySeconds": -1056262432
+    "minReadySeconds": -1056262432,
+    "persistentVolumeClaimRetentionPolicy": {
+      "whenDeleted": "/Ş槀墺=Ĉ鳟/d",
+      "whenScaled": "á"
+    }
   },
   "status": {
-    "observedGeneration": -3770279213092072518,
+    "observedGeneration": 5897193066236579633,
-    "replicas": -1669166259,
+    "replicas": 1442750499,
-    "readyReplicas": -175399547,
+    "readyReplicas": -1190434752,
-    "currentReplicas": 223338274,
+    "currentReplicas": -1929177074,
-    "updatedReplicas": -1279136912,
+    "updatedReplicas": -690843774,
     "currentRevision": "538",
     "updateRevision": "539",
-    "collisionCount": 1222237461,
+    "collisionCount": 1329525670,
     "conditions": [
       {
-        "type": "壣V礆á¤拈tY",
+        "type": "\u0026嬜Š\u0026?鳢.ǀŭ瘢",
-        "status": "飼蒱鄆\u0026嬜Š\u0026?鳢.ǀŭ瘢颦z",
+        "status": "Z氞唬蹵ɥeȿĦ`垨Džɞ堹ǖ*Oɑ埩6",
-        "lastTransitionTime": "2368-07-30T22:05:09Z",
+        "lastTransitionTime": "2881-11-22T04:01:01Z",
         "reason": "540",
         "message": "541"
       }
     ],
-    "availableReplicas": -1174483980
+    "availableReplicas": -1889018254
   }
 }

staging/src/k8s.io/api/testdata/HEAD/apps.v1beta2.StatefulSet.yaml

@@ -32,6 +32,9 @@ metadata:
   uid: "7"
 spec:
   minReadySeconds: -1056262432
+  persistentVolumeClaimRetentionPolicy:
+    whenDeleted: /Ş槀墺=Ĉ鳟/d
+    whenScaled: á
   podManagementPolicy: Ȍ%ÿ¼璤ňɈ
   replicas: 896585016
   revisionHistoryLimit: -1166275743
@@ -1164,18 +1167,18 @@ spec:
       phase: ñƍU烈 źfjǰɪ嘞
       resizeStatus: ʨɺC`牯
 status:
-  availableReplicas: -1174483980
+  availableReplicas: -1889018254
-  collisionCount: 1222237461
+  collisionCount: 1329525670
   conditions:
-  - lastTransitionTime: "2368-07-30T22:05:09Z"
+  - lastTransitionTime: "2881-11-22T04:01:01Z"
     message: "541"
     reason: "540"
-    status: 飼蒱鄆&嬜Š&?鳢.ǀŭ瘢颦z
+    status: Z氞唬蹵ɥeȿĦ`垨Džɞ堹ǖ*Oɑ埩6
-    type: 壣V礆á¤拈tY
+    type: '&嬜Š&?鳢.ǀŭ瘢'
-  currentReplicas: 223338274
+  currentReplicas: -1929177074
   currentRevision: "538"
-  observedGeneration: -3770279213092072518
+  observedGeneration: 5897193066236579633
-  readyReplicas: -175399547
+  readyReplicas: -1190434752
-  replicas: -1669166259
+  replicas: 1442750499
   updateRevision: "539"
-  updatedReplicas: -1279136912
+  updatedReplicas: -690843774

staging/src/k8s.io/client-go/applyconfigurations/apps/v1/statefulsetpersistentvolumeclaimretentionpolicy.go

@@ -0,0 +1,52 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by applyconfiguration-gen. DO NOT EDIT.
+
+package v1
+
+import (
+	v1 "k8s.io/api/apps/v1"
+)
+
+// StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration represents an declarative configuration of the StatefulSetPersistentVolumeClaimRetentionPolicy type for use
+// with apply.
+type StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration struct {
+	WhenDeleted *v1.PersistentVolumeClaimRetentionPolicyType `json:"whenDeleted,omitempty"`
+	WhenScaled  *v1.PersistentVolumeClaimRetentionPolicyType `json:"whenScaled,omitempty"`
+}
+
+// StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration constructs an declarative configuration of the StatefulSetPersistentVolumeClaimRetentionPolicy type for use with
+// apply.
+func StatefulSetPersistentVolumeClaimRetentionPolicy() *StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration {
+	return &StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration{}
+}
+
+// WithWhenDeleted sets the WhenDeleted field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the WhenDeleted field is set to the value of the last call.
+func (b *StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration) WithWhenDeleted(value v1.PersistentVolumeClaimRetentionPolicyType) *StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration {
+	b.WhenDeleted = &value
+	return b
+}
+
+// WithWhenScaled sets the WhenScaled field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the WhenScaled field is set to the value of the last call.
+func (b *StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration) WithWhenScaled(value v1.PersistentVolumeClaimRetentionPolicyType) *StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration {
+	b.WhenScaled = &value
+	return b
+}

staging/src/k8s.io/client-go/applyconfigurations/apps/v1/statefulsetspec.go

@@ -36,6 +36,7 @@ type StatefulSetSpecApplyConfiguration struct {
 	UpdateStrategy                       *StatefulSetUpdateStrategyApplyConfiguration                       `json:"updateStrategy,omitempty"`
 	RevisionHistoryLimit                 *int32                                                             `json:"revisionHistoryLimit,omitempty"`
 	MinReadySeconds                      *int32                                                             `json:"minReadySeconds,omitempty"`
+	PersistentVolumeClaimRetentionPolicy *StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration `json:"persistentVolumeClaimRetentionPolicy,omitempty"`
 }
 
 // StatefulSetSpecApplyConfiguration constructs an declarative configuration of the StatefulSetSpec type for use with
@@ -120,3 +121,11 @@ func (b *StatefulSetSpecApplyConfiguration) WithMinReadySeconds(value int32) *St
 	b.MinReadySeconds = &value
 	return b
 }
+
+// WithPersistentVolumeClaimRetentionPolicy sets the PersistentVolumeClaimRetentionPolicy field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the PersistentVolumeClaimRetentionPolicy field is set to the value of the last call.
+func (b *StatefulSetSpecApplyConfiguration) WithPersistentVolumeClaimRetentionPolicy(value *StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration) *StatefulSetSpecApplyConfiguration {
+	b.PersistentVolumeClaimRetentionPolicy = value
+	return b
+}

staging/src/k8s.io/client-go/applyconfigurations/apps/v1beta1/statefulsetpersistentvolumeclaimretentionpolicy.go

@@ -0,0 +1,52 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by applyconfiguration-gen. DO NOT EDIT.
+
+package v1beta1
+
+import (
+	v1beta1 "k8s.io/api/apps/v1beta1"
+)
+
+// StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration represents an declarative configuration of the StatefulSetPersistentVolumeClaimRetentionPolicy type for use
+// with apply.
+type StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration struct {
+	WhenDeleted *v1beta1.PersistentVolumeClaimRetentionPolicyType `json:"whenDeleted,omitempty"`
+	WhenScaled  *v1beta1.PersistentVolumeClaimRetentionPolicyType `json:"whenScaled,omitempty"`
+}
+
+// StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration constructs an declarative configuration of the StatefulSetPersistentVolumeClaimRetentionPolicy type for use with
+// apply.
+func StatefulSetPersistentVolumeClaimRetentionPolicy() *StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration {
+	return &StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration{}
+}
+
+// WithWhenDeleted sets the WhenDeleted field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the WhenDeleted field is set to the value of the last call.
+func (b *StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration) WithWhenDeleted(value v1beta1.PersistentVolumeClaimRetentionPolicyType) *StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration {
+	b.WhenDeleted = &value
+	return b
+}
+
+// WithWhenScaled sets the WhenScaled field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the WhenScaled field is set to the value of the last call.
+func (b *StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration) WithWhenScaled(value v1beta1.PersistentVolumeClaimRetentionPolicyType) *StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration {
+	b.WhenScaled = &value
+	return b
+}

staging/src/k8s.io/client-go/applyconfigurations/apps/v1beta1/statefulsetspec.go

@@ -36,6 +36,7 @@ type StatefulSetSpecApplyConfiguration struct {
 	UpdateStrategy                       *StatefulSetUpdateStrategyApplyConfiguration                       `json:"updateStrategy,omitempty"`
 	RevisionHistoryLimit                 *int32                                                             `json:"revisionHistoryLimit,omitempty"`
 	MinReadySeconds                      *int32                                                             `json:"minReadySeconds,omitempty"`
+	PersistentVolumeClaimRetentionPolicy *StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration `json:"persistentVolumeClaimRetentionPolicy,omitempty"`
 }
 
 // StatefulSetSpecApplyConfiguration constructs an declarative configuration of the StatefulSetSpec type for use with
@@ -120,3 +121,11 @@ func (b *StatefulSetSpecApplyConfiguration) WithMinReadySeconds(value int32) *St
 	b.MinReadySeconds = &value
 	return b
 }
+
+// WithPersistentVolumeClaimRetentionPolicy sets the PersistentVolumeClaimRetentionPolicy field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the PersistentVolumeClaimRetentionPolicy field is set to the value of the last call.
+func (b *StatefulSetSpecApplyConfiguration) WithPersistentVolumeClaimRetentionPolicy(value *StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration) *StatefulSetSpecApplyConfiguration {
+	b.PersistentVolumeClaimRetentionPolicy = value
+	return b
+}

staging/src/k8s.io/client-go/applyconfigurations/apps/v1beta2/statefulsetpersistentvolumeclaimretentionpolicy.go

@@ -0,0 +1,52 @@
+/*
+Copyright The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Code generated by applyconfiguration-gen. DO NOT EDIT.
+
+package v1beta2
+
+import (
+	v1beta2 "k8s.io/api/apps/v1beta2"
+)
+
+// StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration represents an declarative configuration of the StatefulSetPersistentVolumeClaimRetentionPolicy type for use
+// with apply.
+type StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration struct {
+	WhenDeleted *v1beta2.PersistentVolumeClaimRetentionPolicyType `json:"whenDeleted,omitempty"`
+	WhenScaled  *v1beta2.PersistentVolumeClaimRetentionPolicyType `json:"whenScaled,omitempty"`
+}
+
+// StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration constructs an declarative configuration of the StatefulSetPersistentVolumeClaimRetentionPolicy type for use with
+// apply.
+func StatefulSetPersistentVolumeClaimRetentionPolicy() *StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration {
+	return &StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration{}
+}
+
+// WithWhenDeleted sets the WhenDeleted field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the WhenDeleted field is set to the value of the last call.
+func (b *StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration) WithWhenDeleted(value v1beta2.PersistentVolumeClaimRetentionPolicyType) *StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration {
+	b.WhenDeleted = &value
+	return b
+}
+
+// WithWhenScaled sets the WhenScaled field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the WhenScaled field is set to the value of the last call.
+func (b *StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration) WithWhenScaled(value v1beta2.PersistentVolumeClaimRetentionPolicyType) *StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration {
+	b.WhenScaled = &value
+	return b
+}

staging/src/k8s.io/client-go/applyconfigurations/apps/v1beta2/statefulsetspec.go

@@ -36,6 +36,7 @@ type StatefulSetSpecApplyConfiguration struct {
 	UpdateStrategy                       *StatefulSetUpdateStrategyApplyConfiguration                       `json:"updateStrategy,omitempty"`
 	RevisionHistoryLimit                 *int32                                                             `json:"revisionHistoryLimit,omitempty"`
 	MinReadySeconds                      *int32                                                             `json:"minReadySeconds,omitempty"`
+	PersistentVolumeClaimRetentionPolicy *StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration `json:"persistentVolumeClaimRetentionPolicy,omitempty"`
 }
 
 // StatefulSetSpecApplyConfiguration constructs an declarative configuration of the StatefulSetSpec type for use with
@@ -120,3 +121,11 @@ func (b *StatefulSetSpecApplyConfiguration) WithMinReadySeconds(value int32) *St
 	b.MinReadySeconds = &value
 	return b
 }
+
+// WithPersistentVolumeClaimRetentionPolicy sets the PersistentVolumeClaimRetentionPolicy field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the PersistentVolumeClaimRetentionPolicy field is set to the value of the last call.
+func (b *StatefulSetSpecApplyConfiguration) WithPersistentVolumeClaimRetentionPolicy(value *StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration) *StatefulSetSpecApplyConfiguration {
+	b.PersistentVolumeClaimRetentionPolicy = value
+	return b
+}

staging/src/k8s.io/client-go/applyconfigurations/internal/internal.go

@@ -907,12 +907,24 @@ var schemaYAML = typed.YAMLObject(`types:
       type:
         scalar: string
       default: ""
+- name: io.k8s.api.apps.v1.StatefulSetPersistentVolumeClaimRetentionPolicy
+  map:
+    fields:
+    - name: whenDeleted
+      type:
+        scalar: string
+    - name: whenScaled
+      type:
+        scalar: string
 - name: io.k8s.api.apps.v1.StatefulSetSpec
   map:
     fields:
     - name: minReadySeconds
       type:
         scalar: numeric
+    - name: persistentVolumeClaimRetentionPolicy
+      type:
+        namedType: io.k8s.api.apps.v1.StatefulSetPersistentVolumeClaimRetentionPolicy
     - name: podManagementPolicy
       type:
         scalar: string
@@ -1195,12 +1207,24 @@ var schemaYAML = typed.YAMLObject(`types:
       type:
         scalar: string
       default: ""
+- name: io.k8s.api.apps.v1beta1.StatefulSetPersistentVolumeClaimRetentionPolicy
+  map:
+    fields:
+    - name: whenDeleted
+      type:
+        scalar: string
+    - name: whenScaled
+      type:
+        scalar: string
 - name: io.k8s.api.apps.v1beta1.StatefulSetSpec
   map:
     fields:
     - name: minReadySeconds
       type:
         scalar: numeric
+    - name: persistentVolumeClaimRetentionPolicy
+      type:
+        namedType: io.k8s.api.apps.v1beta1.StatefulSetPersistentVolumeClaimRetentionPolicy
     - name: podManagementPolicy
       type:
         scalar: string
@@ -1681,12 +1705,24 @@ var schemaYAML = typed.YAMLObject(`types:
       type:
         scalar: string
       default: ""
+- name: io.k8s.api.apps.v1beta2.StatefulSetPersistentVolumeClaimRetentionPolicy
+  map:
+    fields:
+    - name: whenDeleted
+      type:
+        scalar: string
+    - name: whenScaled
+      type:
+        scalar: string
 - name: io.k8s.api.apps.v1beta2.StatefulSetSpec
   map:
     fields:
     - name: minReadySeconds
       type:
         scalar: numeric
+    - name: persistentVolumeClaimRetentionPolicy
+      type:
+        namedType: io.k8s.api.apps.v1beta2.StatefulSetPersistentVolumeClaimRetentionPolicy
     - name: podManagementPolicy
       type:
         scalar: string

staging/src/k8s.io/client-go/applyconfigurations/utils.go

@@ -189,6 +189,8 @@ func ForKind(kind schema.GroupVersionKind) interface{} {
 		return &applyconfigurationsappsv1.StatefulSetApplyConfiguration{}
 	case appsv1.SchemeGroupVersion.WithKind("StatefulSetCondition"):
 		return &applyconfigurationsappsv1.StatefulSetConditionApplyConfiguration{}
+	case appsv1.SchemeGroupVersion.WithKind("StatefulSetPersistentVolumeClaimRetentionPolicy"):
+		return &applyconfigurationsappsv1.StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration{}
 	case appsv1.SchemeGroupVersion.WithKind("StatefulSetSpec"):
 		return &applyconfigurationsappsv1.StatefulSetSpecApplyConfiguration{}
 	case appsv1.SchemeGroupVersion.WithKind("StatefulSetStatus"):
@@ -219,6 +221,8 @@ func ForKind(kind schema.GroupVersionKind) interface{} {
 		return &applyconfigurationsappsv1beta1.StatefulSetApplyConfiguration{}
 	case appsv1beta1.SchemeGroupVersion.WithKind("StatefulSetCondition"):
 		return &applyconfigurationsappsv1beta1.StatefulSetConditionApplyConfiguration{}
+	case appsv1beta1.SchemeGroupVersion.WithKind("StatefulSetPersistentVolumeClaimRetentionPolicy"):
+		return &applyconfigurationsappsv1beta1.StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration{}
 	case appsv1beta1.SchemeGroupVersion.WithKind("StatefulSetSpec"):
 		return &applyconfigurationsappsv1beta1.StatefulSetSpecApplyConfiguration{}
 	case appsv1beta1.SchemeGroupVersion.WithKind("StatefulSetStatus"):
@@ -269,6 +273,8 @@ func ForKind(kind schema.GroupVersionKind) interface{} {
 		return &appsv1beta2.StatefulSetApplyConfiguration{}
 	case v1beta2.SchemeGroupVersion.WithKind("StatefulSetCondition"):
 		return &appsv1beta2.StatefulSetConditionApplyConfiguration{}
+	case v1beta2.SchemeGroupVersion.WithKind("StatefulSetPersistentVolumeClaimRetentionPolicy"):
+		return &appsv1beta2.StatefulSetPersistentVolumeClaimRetentionPolicyApplyConfiguration{}
 	case v1beta2.SchemeGroupVersion.WithKind("StatefulSetSpec"):
 		return &appsv1beta2.StatefulSetSpecApplyConfiguration{}
 	case v1beta2.SchemeGroupVersion.WithKind("StatefulSetStatus"):