+ "/mapOutput?job=job_12345_0001&reduce=0&map=attempt_12345_1_m_1_0");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
String encHash = SecureShuffleUtils.hashFromString(
SecureShuffleUtils.buildMsgFrom(url),
JobTokenSecretManager.createSecretKey(jt.getPassword()));
conn.addRequestProperty(
SecureShuffleUtils.HTTP_HEADER_URL_HASH, encHash);
conn.setRequestProperty(ShuffleHeader.HTTP_HEADER_NAME,
ShuffleHeader.DEFAULT_HTTP_HEADER_NAME);
conn.setRequestProperty(ShuffleHeader.HTTP_HEADER_VERSION,
ShuffleHeader.DEFAULT_HTTP_HEADER_VERSION);