[jira] Created: (HADOOP-6648) Credentials should ignore null tokens

[Owen O'Malley (JIRA)]

Credentials should ignore null tokens
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                 Key: HADOOP-6648
                 URL: https://issues.apache.org/jira/browse/HADOOP-6648
             Project: Hadoop Common
          Issue Type: Bug
          Components: security
            Reporter: Owen O'Malley
            Assignee: Owen O'Malley
             Fix For: 0.22.0


When hftp goes to a non-secure cluster, getDelegationToken returns null. 
Credentials.addToken needs to ignore null tokens to avoid a NPE in 
serialization.

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