service.getServiceComponent(NAMENODE).addServiceComponentHost("127.0.0.1").persist();
service.addServiceComponent(DATANODE).persist();
service.getServiceComponent(DATANODE).addServiceComponentHost("127.0.0.1").persist();
service = serviceFactory.createNew(cluster, "HBASE");
cluster.addService(service);
service.persist();
service = cluster.getService("HBASE");
service.addServiceComponent(HBASE_MASTER).persist();
service.persist();
for (String hostname : hostnames) {
service.getServiceComponent(HBASE_MASTER).addServiceComponentHost(hostname).persist();