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https://issues.apache.org/jira/browse/MAPREDUCE-4720?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13491721#comment-13491721
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Luke Lu commented on MAPREDUCE-4720:
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There is no need to combine the js files, as these requests should be a 
fraction of the that 8 seconds and mostly cached. Can you post the entire 
profile of the request? I recall that you said on YARN-151, 20k rows only takes 
1 second to render with deferred rendering.

BTW, git apply <patch> would work.
                
> Browser thinks History Server main page JS is taking too long
> -------------------------------------------------------------
>
>                 Key: MAPREDUCE-4720
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4720
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 0.23.3
>            Reporter: Robert Joseph Evans
>            Assignee: Ravi Prakash
>         Attachments: MAPREDUCE-4720.patch, MAPREDUCE-4720.patch
>
>
> The main History Server page with the default settings of 20,000 jobs can 
> cause browsers to think that the JS on the page is stuck and ask you if you 
> want to kill it. This is a big usability problem.

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