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https://issues.apache.org/jira/browse/KNOX-1644?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16703625#comment-16703625
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Bharat Viswanadham commented on KNOX-1644:
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HDFS UI 3.0.0 is added for to support redirect URLs in a hdfs federated 
cluster. 

Example http://<<knox>>:<<port>>/gateway/sandbox/hdfsui/?host=\{nnurl} should 
redirect to specific NN.

If HDFS UI 2.7.0 is working for both a federated cluster scenario and 
non-federated cluster we can remove this.

 

> Remove HDFSUI 3.0.0 version
> ---------------------------
>
>                 Key: KNOX-1644
>                 URL: https://issues.apache.org/jira/browse/KNOX-1644
>             Project: Apache Knox
>          Issue Type: Bug
>    Affects Versions: 1.1.0
>            Reporter: Kevin Risden
>            Assignee: Kevin Risden
>            Priority: Blocker
>             Fix For: 1.2.0
>
>         Attachments: KNOX-1644.patch
>
>
> Currently the HDFSUI service is broken with version 3.0.0. Version 2.7.0 
> works. It looks like there were a bunch of changes to the 2.7.0 version but 
> not the 3.0.0 version. Version 2.7.0 seems to fix the issue that 3.0.0 was 
> introduced for. We should remove it since currently version 3.0.0 is broken.
> Version 3.0.0 was introduced in KNOX-1340



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