code: func (dc *DeploymentController) scaleUpNewReplicaSetForRecreate(newRS *apps.ReplicaSet, deployment *apps.Deployment) (bool, error) {
  	scaled, _, err := dc.scaleReplicaSetAndRecordEvent(newRS, *(deployment.Spec.Replicas), deployment)
  	return scaled, err
  }
docs: // scaleUpNewReplicaSetForRecreate scales up new replica set when deployment strategy is "Recreate".