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https://issues.apache.org/jira/browse/HDFS-2956?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vinayakumar B updated HDFS-2956:
--------------------------------
    Labels:   (was: BB2015-05-TBR)

> calling fetchdt without a --renewer argument throws NPE
> -------------------------------------------------------
>
>                 Key: HDFS-2956
>                 URL: https://issues.apache.org/jira/browse/HDFS-2956
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: security
>    Affects Versions: 2.0.0-alpha, 3.0.0
>            Reporter: Todd Lipcon
>            Assignee: Vinayakumar B
>             Fix For: 2.8.0
>
>         Attachments: HDFS-2956-01.patch, HDFS-2956-02.patch, 
> HDFS-2956-04.patch, HDFS-2956.03.patch, HDFS-2956.branch-2.03.patch, 
> HDFS-2956.patch
>
>
> If I call "bin/hdfs fetchdt /tmp/mytoken" without a "--renewer foo" argument, 
> then it will throw a NullPointerException:
> Exception in thread "main" java.lang.NullPointerException
>         at 
> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getDelegationToken(ClientNamenodeProtocolTranslatorPB.java:830)
> this is because getDelegationToken is being called with a null renewer



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