if *(targetRS.Spec.Replicas) == targetRS.Status.AvailableReplicas {
			// no unhealthy replicas found, no scaling required.
			continue
		}

		scaledDownCount := min(maxCleanupCount-totalScaledDown, *(targetRS.Spec.Replicas)-targetRS.Status.AvailableReplicas)
		newReplicasCount := *(targetRS.Spec.Replicas) - scaledDownCount

	}
	d.Status.Conditions = conditions
	return d
}

// helper to create RS with given availableReplicas
func newRSWithAvailable(name string, specReplicas, statusReplicas, availableReplicas int32) *apps.ReplicaSet {
	rs := rs(name, specReplicas, nil, metav1.Time{})
	rs.Status = apps.ReplicaSetStatus{
		Replicas:          statusReplicas,
		AvailableReplicas: availableReplicas,
	}
	return rs
}

	}
	if status.AvailableReplicas > status.Replicas {
		allErrs = append(allErrs, field.Invalid(fieldPath.Child("availableReplicas"), status.AvailableReplicas, msg))
	}
	if status.AvailableReplicas > status.ReadyReplicas {
		allErrs = append(allErrs, field.Invalid(fieldPath.Child("availableReplicas"), status.AvailableReplicas, "cannot be greater than status.readyReplicas"))
	}
	return allErrs

		oldSelector := map[string]string{"foo": "old"}
		newRS := rs("foo-new", test.newReplicas, newSelector, noTimestamp)
		newRS.Status.AvailableReplicas = int32(test.readyPodsFromNewRS)
		oldRS := rs("foo-old", test.oldReplicas, oldSelector, noTimestamp)
		oldRS.Status.AvailableReplicas = int32(test.readyPodsFromOldRS)
		oldRSs := []*apps.ReplicaSet{oldRS}
		allRSs := []*apps.ReplicaSet{oldRS, newRS}
		maxSurge := intstr.FromInt32(0)

	out.Replicas = in.Replicas
	out.FullyLabeledReplicas = in.FullyLabeledReplicas
	out.ReadyReplicas = in.ReadyReplicas
	out.AvailableReplicas = in.AvailableReplicas
	out.ObservedGeneration = in.ObservedGeneration
	for _, cond := range in.Conditions {
		out.Conditions = append(out.Conditions, apps.ReplicaSetCondition{

	// availableReplicas is the total number of available pods (ready for at least minReadySeconds) targeted by this StatefulSet.
	// +optional
	AvailableReplicas int32 `json:"availableReplicas" protobuf:"varint,11,opt,name=availableReplicas"`
}

type StatefulSetConditionType string

func calculateStatus(allRSs []*apps.ReplicaSet, newRS *apps.ReplicaSet, deployment *apps.Deployment) apps.DeploymentStatus {
	availableReplicas := deploymentutil.GetAvailableReplicaCountForReplicaSets(allRSs)
	totalReplicas := deploymentutil.GetReplicaCountForReplicaSets(allRSs)
	unavailableReplicas := totalReplicas - availableReplicas
	// If unavailableReplicas is negative, then that means the Deployment has more available replicas running than

			expected: false,
		},
		{
			name: "not complete: still running old pods",

			// old replica set: spec.replicas=1, status.replicas=1, status.availableReplicas=1
			// new replica set: spec.replicas=1, status.replicas=1, status.availableReplicas=0
			d:        deployment(1, 2, 1, 1, 0, 1),
			expected: false,
		},
		{
			name: "not complete: one replica deployment never comes up",

	status.Replicas = 0
	status.ReadyReplicas = 0
	status.AvailableReplicas = 0
	status.CurrentReplicas = 0
	status.UpdatedReplicas = 0
	for _, list := range podLists {
		replicaStatus := computeReplicaStatus(list, minReadySeconds, currentRevision, updateRevision)
		status.Replicas += replicaStatus.replicas
		status.ReadyReplicas += replicaStatus.readyReplicas
		status.AvailableReplicas += replicaStatus.availableReplicas

  // +optional
  // +patchMergeKey=type
  // +patchStrategy=merge
  repeated StatefulSetCondition conditions = 10;

  // availableReplicas is the total number of available pods (ready for at least minReadySeconds) targeted by this StatefulSet.
  // +optional
  optional int32 availableReplicas = 11;
}

// StatefulSetUpdateStrategy indicates the strategy that the StatefulSet