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https://issues.apache.org/jira/browse/HADOOP-10017?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13787506#comment-13787506
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Jing Zhao commented on HADOOP-10017:
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+1. I will commit it shortly.
> Fix NPE in DFSClient#getDelegationToken when doing Distcp from a secured
> cluster to an insecured cluster
> --------------------------------------------------------------------------------------------------------
>
> Key: HADOOP-10017
> URL: https://issues.apache.org/jira/browse/HADOOP-10017
> Project: Hadoop Common
> Issue Type: Sub-task
> Affects Versions: 3.0.0, 2.1.1-beta
> Reporter: Jing Zhao
> Assignee: Haohui Mai
> Attachments: HADOOP-10017.000.patch
>
>
> Currently if we run Distcp from a secured cluster and copy data to an
> insecured cluster, DFSClient#getDelegationToken will throw NPE when
> processing the NULL token returned by the NN in the insecured cluster. We
> should be able to handle the NULL token here.
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