Do not reset managedFields in status update strategy

pkg/registry/flowcontrol/flowschema/strategy.go

@@ -94,7 +94,12 @@ var StatusStrategy = flowSchemaStatusStrategy{Strategy}
 func (flowSchemaStatusStrategy) PrepareForUpdate(ctx context.Context, obj, old runtime.Object) {
 	newFlowSchema := obj.(*flowcontrol.FlowSchema)
 	oldFlowSchema := old.(*flowcontrol.FlowSchema)
+
+	// managedFields must be preserved since it's been modified to
+	// track changed fields in the status update.
+	managedFields := newFlowSchema.ManagedFields
 	newFlowSchema.ObjectMeta = oldFlowSchema.ObjectMeta
+	newFlowSchema.ManagedFields = managedFields
 	newFlowSchema.Spec = oldFlowSchema.Spec
 }
 

pkg/registry/flowcontrol/prioritylevelconfiguration/strategy.go

@@ -94,7 +94,12 @@ var StatusStrategy = priorityLevelConfigurationStatusStrategy{Strategy}
 func (priorityLevelConfigurationStatusStrategy) PrepareForUpdate(ctx context.Context, obj, old runtime.Object) {
 	newPriorityLevelConfiguration := obj.(*flowcontrol.PriorityLevelConfiguration)
 	oldPriorityLevelConfiguration := old.(*flowcontrol.PriorityLevelConfiguration)
+
+	// managedFields must be preserved since it's been modified to
+	// track changed fields in the status update.
+	managedFields := newPriorityLevelConfiguration.ManagedFields
 	newPriorityLevelConfiguration.ObjectMeta = oldPriorityLevelConfiguration.ObjectMeta
+	newPriorityLevelConfiguration.ManagedFields = managedFields
 	newPriorityLevelConfiguration.Spec = oldPriorityLevelConfiguration.Spec
 }
 

staging/src/k8s.io/apiextensions-apiserver/pkg/registry/customresource/status_strategy.go

@@ -38,6 +38,10 @@ func (a statusStrategy) PrepareForUpdate(ctx context.Context, obj, old runtime.O
 	newCustomResource := newCustomResourceObject.UnstructuredContent()
 	status, ok := newCustomResource["status"]
 
+	// managedFields must be preserved since it's been modified to
+	// track changed fields in the status update.
+	managedFields := newCustomResourceObject.GetManagedFields()
+
 	// copy old object into new object
 	oldCustomResourceObject := old.(*unstructured.Unstructured)
 	// overridding the resourceVersion in metadata is safe here, we have already checked that
@@ -45,6 +49,7 @@ func (a statusStrategy) PrepareForUpdate(ctx context.Context, obj, old runtime.O
 	*newCustomResourceObject = *oldCustomResourceObject.DeepCopy()
 
 	// set status
+	newCustomResourceObject.SetManagedFields(managedFields)
 	newCustomResource = newCustomResourceObject.UnstructuredContent()
 	if ok {
 		newCustomResource["status"] = status

staging/src/k8s.io/apimachinery/pkg/apis/meta/v1/helpers.go

@@ -252,7 +252,9 @@ func ResetObjectMetaForStatus(meta, existingMeta Object) {
 	meta.SetAnnotations(existingMeta.GetAnnotations())
 	meta.SetFinalizers(existingMeta.GetFinalizers())
 	meta.SetOwnerReferences(existingMeta.GetOwnerReferences())
-	meta.SetManagedFields(existingMeta.GetManagedFields())
+	// managedFields must be preserved since it's been modified to
+	// track changed fields in the status update.
+	//meta.SetManagedFields(existingMeta.GetManagedFields())
 }
 
 // MarshalJSON implements json.Marshaler

staging/src/k8s.io/apimachinery/pkg/apis/meta/v1/helpers_test.go

@@ -189,6 +189,7 @@ func TestResetObjectMetaForStatus(t *testing.T) {
 	existingMeta.SetCreationTimestamp(Time{})
 	existingMeta.SetDeletionTimestamp(nil)
 	existingMeta.SetDeletionGracePeriodSeconds(nil)
+	existingMeta.SetManagedFields(nil)
 
 	if !reflect.DeepEqual(meta, existingMeta) {
 		t.Error(diff.ObjectDiff(meta, existingMeta))