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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-8410) SPNEGO filter should have better error messages when not fully configured
Date Fri, 18 May 2012 21:51:08 GMT
Todd Lipcon created HADOOP-8410:
-----------------------------------

             Summary: SPNEGO filter should have better error messages when not fully configured
                 Key: HADOOP-8410
                 URL: https://issues.apache.org/jira/browse/HADOOP-8410
             Project: Hadoop Common
          Issue Type: Bug
          Components: security
    Affects Versions: 2.0.0
            Reporter: Todd Lipcon
            Priority: Minor


I upgraded to a build which includes SPNEGO, but neglected to configure  dfs.web.authentication.kerberos.principal.
This resulted in the following error:

12/05/18 14:46:20 INFO server.KerberosAuthenticationHandler: Login using keytab //home/todd/confs/conf.pseudo.security//hdfs.keytab,
for principal ${dfs.web.authentication.kerberos.principal}
12/05/18 14:46:20 WARN mortbay.log: failed SpnegoFilter: javax.servlet.ServletException: javax.security.auth.login.LoginException:
Unable to obtain password from user

Instead, it should give an error that the principal needs to be configured. Even better would
be if we could default to HTTP/_HOST@<default realm>

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