try {
            client.admin().indices().prepareRefresh(indexName).execute().actionGet(fessConfig.getIndexIndicesTimeout());
            try (CurlResponse response = ComponentUtil.getCurlHelper().get("/" + indexName + "/_count").execute()) {
                if (response.getHttpStatusCode() == 200) {
                    final Map<String, Object> contentMap = response.getContent(OpenSearchCurl.jsonParser());