new ClusterControllerManager(ZK_ADDR, CLUSTER_NAME, controllerName);
_controller.syncStart();
boolean result =
ClusterStateVerifier
.verifyByZkCallback(new MasterNbInExtViewVerifier(ZK_ADDR, CLUSTER_NAME));
Assert.assertTrue(result);
HelixDataAccessor accessor = _participants[0].getHelixDataAccessor();
Builder kb = accessor.keyBuilder();
ExternalView ev = accessor.getProperty(kb.externalView(TEST_DB));