Phil Zampino created KNOX-1244:

             Summary: YARNUIV2 support requires a custom dispatch to handle 
redirects from passive to active endpoint
                 Key: KNOX-1244
             Project: Apache Knox
          Issue Type: Bug
          Components: Server
    Affects Versions: 1.1.0
            Reporter: Phil Zampino
            Assignee: Phil Zampino
             Fix For: 1.1.0

If discovery queries the YARN config to identify the endpoint for the new 
YARNUIV2 service, it may find that the configured value is actually the standby 
endpoint. interactions with this endpoint yield a redirect notice, which needs 
to be handled in exactly the same way as is done for the RESOURCEMANAGER 
(RMHaDispatch) and YARNUI (RMUIHaDispatch) services.

The RMUIHaDispatch may be able to be leveraged directly or extended.

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