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https://issues.apache.org/jira/browse/YARN-1599?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13914329#comment-13914329
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Gera Shegalov commented on YARN-1599:
-------------------------------------

[~vinodkv], with v03 we are no longer forcing the redirect. I agree with this 
point, raised by [~jlowe] as well. You can still access the RM app via the 
corresponding link, as you can see from the screenshot. I simply moved the 
tracking UI link that our users really want to see to the 1st column. And now 
users tend to click it first. 

bq. Why don't we fix this issue if that is the driving force. I don't expect a 
404 if users go through the proxy (which they should!). Can you throw more 
light on when this can happen?

However, you are correct that 404 on the link from RM app to AM logs should be 
fixed as well. 404 is caused by the log aggregation after the local logs are 
deleted.

> webUI rm.webapp.AppBlock should redirect to a history App page if and when 
> available
> ------------------------------------------------------------------------------------
>
>                 Key: YARN-1599
>                 URL: https://issues.apache.org/jira/browse/YARN-1599
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>    Affects Versions: 2.0.5-alpha, 2.2.0
>            Reporter: Gera Shegalov
>            Assignee: Gera Shegalov
>         Attachments: Screen Shot 2014-01-16 at 6.52.17 PM.png, Screen Shot 
> 2014-01-16 at 7.30.32 PM.png, YARN-1599.v01.patch, YARN-1599.v02.patch, 
> YARN-1599.v03.patch
>
>
> When the log aggregation is enabled, and the application finishes, our users 
> think that the AppMaster logs were lost because the link to the AM attempt 
> logs are not updated and result in HTTP 404. Only tracking URL is updated. In 
> order to have a smoother user experience, we propose to simply redirect to 
> the new tracking URL when the page with invalid log links is accessed.



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