NetUtils:normalizeHostName does not process hostnames starting with [a-f]
correctly
-----------------------------------------------------------------------------------
Key: HADOOP-6682
URL: https://issues.apache.org/jira/browse/HADOOP-6682
Project: Hadoop Common
Issue Type: Bug
Components: io
Reporter: Jakob Homan
public static String normalizeHostName(String name) {
if (Character.digit(name.charAt(0), 16) != -1) {
return name;
This code is attempting to short-circuit the hostname->ip resolution on the
assumption that if name starts with a digit, it's already an ip address. This
is of questionable value, but because it checks for a hex digit, it will fail
on names starting with [a-f]. Such names will not be converted to an ip
address, but be returned unchanged.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
