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From "Daryn Sharp (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-2328) hftp throws NPE if security is not enabled on remote cluster
Date Tue, 13 Sep 2011 15:20:09 GMT
hftp throws NPE if security is not enabled on remote cluster
------------------------------------------------------------

                 Key: HDFS-2328
                 URL: https://issues.apache.org/jira/browse/HDFS-2328
             Project: Hadoop HDFS
          Issue Type: Bug
    Affects Versions: 0.20.205.0
            Reporter: Daryn Sharp
            Priority: Critical
             Fix For: 0.20.205.0


If hftp cannot locate either a hdfs or hftp token in the ugi, it will call {{getDelegationToken}}
to acquire one from the remote nn.  This method may return a null {{Token}} if security is
disabled(*)  on the remote nn.  Hftp will internally call its {{setDelegationToken}} which
will throw a NPE when the token is {{null}}.

(*) Actually, if any problem happens while acquiring the token it assumes security is disabled!
 However, it's a pre-existing issue beyond the scope of the token renewal changes.

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