@Override
public void setUp() throws Exception {
super.setUp();
authenticator = new ZooKeeperAuthenticator(conf);
ZooKeeper zk = authenticator.wrapper.getZooKeeper();
JSONJAXBContext context =
new JSONJAXBContext(JSONConfiguration.natural().build(),
UserModel.class);
JSONMarshaller marshaller = context.createJSONMarshaller();
if (zk.exists(ZooKeeperAuthenticator.USERS_ZNODE_ROOT + "/" +
ADMIN_TOKEN, null) == null) {
UserModel model = new UserModel();
model.name = ADMIN_USERNAME;
model.admin = true;