protected void insertBulkData(final FessConfig fessConfig, final String configIndex, final String dataPath) {
        try {
            final BulkRequestBuilder builder = client.prepareBulk();
            final ObjectMapper mapper = new ObjectMapper();
            final String userIndex = fessConfig.getIndexUserIndex() + ".user";
            Arrays.stream(FileUtil.readUTF8(dataPath).split("\n"))
                    .map(line -> line//