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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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Vinay updated HDFS-2956:
------------------------
Attachment: HDFS-2956.patch
Attaching the patch, Please review
Made the renewer optional as per above comments.
> 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: 0.24.0
> Reporter: Todd Lipcon
> Attachments: 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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