}

    protected void createMapping(final String mappingName) {
        boolean exists = false;
        try {
            final IndicesExistsResponse response = fesenClient.get(c -> c.admin().indices().prepareExists(index).execute());
            exists = response.isExists();
        } catch (final IndexNotFoundException e) {
            // ignore
        }
        if (!exists) {

        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        boolean exists = false;
        try {
            final IndicesExistsResponse response =
                    client.admin().indices().prepareExists(indexName).execute().actionGet(fessConfig.getIndexSearchTimeout());
            exists = response.isExists();
        } catch (final Exception e) {
            logger.debug("Failed to check {} index status.", indexName, e);