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https://issues.apache.org/jira/browse/HADOOP-6648?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12888291#action_12888291
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Hudson commented on HADOOP-6648:
--------------------------------
Integrated in Hadoop-Common-trunk #392 (See
[http://hudson.zones.apache.org/hudson/job/Hadoop-Common-trunk/392/])
HADOOP-6648. Adds a check for null tokens in Credentials.addToken api.
Contributed by Owen O'Malley and Devaraj Das.
> Credentials should ignore null tokens
> -------------------------------------
>
> 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: Devaraj Das
> Fix For: 0.22.0
>
> Attachments: c-6648-y20.patch, h-6648-trunk.patch
>
>
> 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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