@Override
  public void addService(Service service) {
    if (LOG.isDebugEnabled()) {
      LOG.debug("Adding a new Service, clusterName={}, clusterId={}, serviceName={}", getClusterName(), getClusterId(), service.getName());
    }
    services.put(service.getName(), service);
  }
Make sure we load all the service host components.
We need this for live status checks.
ambari-server/src/main/java/org/apache/ambari/server/state/cluster/ClusterImpl.java