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https://issues.apache.org/jira/browse/YARN-8125?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sunil G resolved YARN-8125.
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Resolution: Not A Problem
Pls reopen if there is still issue.
> YARNUIV2 does not failover from standby to active endpoint like previous YARN
> UI
> --------------------------------------------------------------------------------
>
> Key: YARN-8125
> URL: https://issues.apache.org/jira/browse/YARN-8125
> Project: Hadoop YARN
> Issue Type: Bug
> Components: yarn-ui-v2
> Reporter: Phil Zampino
> Assignee: Sunil G
> Priority: Major
>
> If the YARN UI is accessed via the standby resource manager endpoint, it
> automatically redirects the requests to the active resource manager endpoint.
> YARNUIV2 should behave the same way.
> Apache Knox 1.0.0 introduced the ability to dynamically determine proxied
> RESOURCEMANAGER and YARNUI service endpoints based on YARN configuration from
> Ambari. This functionality works for RM and YARNUI because even though the
> YARN config may reference the standby RM endpoint, requests are automatically
> redirected to the active endpoint.
> RM and YARNUI requests to the standby endpoint result in a HTTP 307 response.
> YARNUIV2 should respond similarly.
> If YARNUIV2 behaves differently, then Knox will not be able to support its
> own dynamic configuration behavior when proxying YARNUIV2.
> KNOX-1212 adds the integration with Knox, but KNOX-1236 is blocked by this
> issue.
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