private void writeToHdfs(String uuid, String json) {
    String fileName = getFileNameForRequestData(uuid);
    try {
      HdfsUtil.putStringToFile(getApi(), fileName, json);
    } catch (HdfsApiException e) {
      LOG.error("Failed to write request data to HDFS", e);
      throw new ServiceFormattedException("Failed to write request data to HDFS", e);
    }
  }
Generate link for concat
@param request download request
@return response wth request id
@see #concatByRequestId(String)
contrib/views/files/src/main/java/org/apache/ambari/view/filebrowser/DownloadService.java