code: public static void disableSerialization(Configuration conf) {
  		String ser = conf.get("io.serializations").trim();
  		String stToSearch = Pattern.quote("," + TupleSerialization.class.getName());
  		ser = ser.replaceAll(stToSearch, "");
  		conf.set("io.serializations", ser);
  	}
docs: Use this method to disable this serialization in Hadoop