final Token<? extends TokenIdentifier> t = generateDelegationToken(
namenode, ugi, request.getUserPrincipal().getName());
delegationQuery = "&" + new DelegationParam(t.encodeToUrlString());
}
final String query = op.toQueryString() + delegationQuery
+ "&" + new NamenodeAddressParam(namenode)
+ Param.toSortedString("&", parameters);
final String uripath = WebHdfsFileSystem.PATH_PREFIX + path;
final String scheme = request.getScheme();
int port = "http".equals(scheme) ? dn.getInfoPort() : dn