try {
            final SearchEngineClient esClient = ComponentUtil.getSearchEngineClient();
            final ClusterHealthResponse response =
                    esClient.admin().cluster().prepareHealth().execute().actionGet(fessConfig.getIndexHealthTimeout());
            engineObj.clusterName = response.getClusterName();
            engineObj.numberOfNodes = response.getNumberOfNodes();

        final SearchEngineClient searchEngineClient = ComponentUtil.getSearchEngineClient();
        searchEngineClient.admin()
                .cluster()
                .prepareHealth()
                .setWaitForYellowStatus()
                .execute()
                .actionGet(fessConfig.getIndexHealthTimeout());

        final SuggestSettingsBuilder settingsBuilder = SuggestSettings.builder();

            try {
                searchEngineClient.admin()
                        .cluster()
                        .prepareHealth(toIndex)
                        .setWaitForYellowStatus()
                        .execute(ActionListener.wrap(response -> {
                            try {

    /**
     * Gets the current cluster health status.
     *
     * @return the cluster health status name
     */
    public String getStatus() {
        return admin().cluster()
                .prepareHealth()
                .execute()
                .actionGet(ComponentUtil.getFessConfig().getIndexHealthTimeout())
                .getStatus()
                .name();
    }

    /**