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From "Arpit Gupta (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-8878) uppercase hostname causes hadoop dfs calls with webhdfs filesystem to fail
Date Thu, 04 Oct 2012 00:47:08 GMT
Arpit Gupta created HADOOP-8878:
-----------------------------------

             Summary: uppercase hostname causes hadoop dfs calls with webhdfs filesystem to
fail
                 Key: HADOOP-8878
                 URL: https://issues.apache.org/jira/browse/HADOOP-8878
             Project: Hadoop Common
          Issue Type: Bug
    Affects Versions: 1.0.3, 1.1.0, 1.2.0
            Reporter: Arpit Gupta
            Assignee: Arpit Gupta


This was noticed on a secure cluster where the namenode had an upper case hostname and the
following command was issued

hadoop dfs -ls webhdfs://NN:PORT/PATH

the above command failed because delegation token retrieval failed.

Upon looking at the kerberos logs it was determined that we tried to get the ticket for kerberos
principal with upper case hostnames and that host did not exit in kerberos. We should convert
the hostnames to lower case. Take a look at HADOOP-7988 where the same fix was applied on
a different class.

I have noticed this issue exists on branch-1. Will investigate trunk and branch-2 and update
accordingly.

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