code: @SuppressWarnings("unchecked")
  	public static Map<String,Object> deserializeMapFromFile(String filesystem, String filename) {
  		Map<String,Object> map;
  		if (filesystem.equals(HDFS)) {
  			map = (Map<String,Object>) HDFSUtils.deserializeObjectFromFile(filename);
  		}
  		else {
  			map = (Map<String,Object>) LocalFileSystemUtils.deserializeObjectFromLocalFile(filename);
  		}
  		return map;
  	}
docs: /*
  Deserialize object