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https://issues.apache.org/jira/browse/HDFS-4587?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13968382#comment-13968382
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Mit Desai commented on HDFS-4587:
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As 0.23 is going into the maintenance state and this bug will not be fixed in
it, I am removing the target version for 0.23.11
> Webhdfs secure clients are incompatible with non-secure NN
> ----------------------------------------------------------
>
> Key: HDFS-4587
> URL: https://issues.apache.org/jira/browse/HDFS-4587
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode, webhdfs
> Affects Versions: 3.0.0, 0.23.7, 2.0.4-alpha
> Reporter: Daryn Sharp
>
> A secure webhdfs client will receive an exception from a non-secure NN. For
> a NN in non-secure mode, {{FSNamesystem#getDelegationToken}} will return
> "null" to indicate no token is required. Hdfs will send back the null to the
> client, but webhdfs uses {{DelegationTokenSecretManager.createCredentials}}
> which instead throws an exception.
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