code: private boolean checkCommonPropExistance(Path rootPath, String noExtFileName)
        throws IOException {
      Configuration conf = new Configuration();
      FileStatus[] children = rootPath.getFileSystem(conf).listStatus(rootPath);
  
      for (FileStatus aChild : children) {
        if (aChild.getPath().getName().contains(noExtFileName)) {
          return false;
        }
      }
      return true;
    }
docs: Given the target rootPath, check if there's common properties existed. Return false if so.
  @param rootPath
  @return