Junping Du created HADOOP-8372:
----------------------------------

             Summary: normalizeHostName() in NetUtils is not working properly 
in resolving a hostname start with numeric character
                 Key: HADOOP-8372
                 URL: https://issues.apache.org/jira/browse/HADOOP-8372
             Project: Hadoop Common
          Issue Type: Bug
          Components: io, util
    Affects Versions: 0.23.0, 1.0.0
            Reporter: Junping Du
            Assignee: Junping Du


A valid host name can start with numeric value (You can refer RFC952, RFC1123 
or http://www.zytrax.com/books/dns/apa/names.html), so it is possible in a 
production environment, user name their hadoop nodes as: 1hosta, 2hostb, etc. 
But normalizeHostName() will recognise this hostname as IP address and return 
directly rather than resolving the real IP address. These nodes will be failed 
to get correct network topology if topology script/TableMapping only contains 
their IPs (without hostname).

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: 
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

Reply via email to