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  1. Hadoop Common
  2. HADOOP-6682

NetUtils:normalizeHostName does not process hostnames starting with [a-f] correctly

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.22.0
    • Component/s: io
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      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.

        Attachments

        1. HADOOP-6682.patch
          0.6 kB
          Jakob Homan
        2. HADOOP-6682-Y20.patch
          0.6 kB
          Jakob Homan

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              • Assignee:
                jghoman Jakob Homan
                Reporter:
                jghoman Jakob Homan
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                Dates

                • Created:
                  Updated:
                  Resolved: