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https://issues.apache.org/jira/browse/HDFS-2528?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13143596#comment-13143596
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Arpit Gupta commented on HDFS-2528:
-----------------------------------
1. Noticed that on a secure cluster when the user sends a wrong delegation
value we throw a 500. We should throw a 401 stating invalid auth token is sent.
2. On a secure cluster when no auth or delegation token are sent 401 is
returned but no error response is sent. Also the content type is set to
text/html. We should return an error response and the application/json content
type.
> webhdfs rest call to a secure dn fails when a token is sent
> -----------------------------------------------------------
>
> Key: HDFS-2528
> URL: https://issues.apache.org/jira/browse/HDFS-2528
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Affects Versions: 0.20.205.0
> Reporter: Arpit Gupta
> Assignee: Tsz Wo (Nicholas), SZE
> Attachments: h2528_20111101.patch, h2528_20111101_0.20s.patch,
> h2528_20111101b.patch, h2528_20111101b_0.20s.patch, h2528_20111102.patch,
> h2528_20111102_0.20s.patch
>
>
> curl -L -u : --negotiate -i
> "http://NN:50070/webhdfs/v1/tmp/webhdfs_data/file_small_data.txt?op=OPEN";
> the following exception is thrown by the datanode when the redirect happens.
> {"RemoteException":{"exception":"IOException","javaClassName":"java.io.IOException","message":"Call
> to failed on local exception: java.io.IOException:
> javax.security.sasl.SaslException: GSS initiate failed [Caused by
> GSSException: No valid credentials provided (Mechanism level: Failed to find
> any Kerberos tgt)]"}}
> Interestingly when using ./bin/hadoop with a webhdfs path we are able to cat
> or tail a file successfully.
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