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https://issues.apache.org/jira/browse/YARN-3589?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14533206#comment-14533206
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Jian He commented on YARN-3589:
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lgtm, thanks Rohith !
> RM and AH web UI display DOCTYPE
> --------------------------------
>
> Key: YARN-3589
> URL: https://issues.apache.org/jira/browse/YARN-3589
> Project: Hadoop YARN
> Issue Type: Bug
> Components: webapp
> Affects Versions: 2.8.0
> Reporter: Rohith
> Assignee: Rohith
> Labels: BB2015-05-TBR
> Attachments: 0001-YARN-3589.patch, YARN-3589.PNG
>
>
> RM web app UI display {{<!DOCTYPE html PUBLIC "-\/\/W3C\/\/DTD HTML
> 4.01\/\/EN" "http:\/\/www.w3.org\/TR\/html4\/strict.dtd">}} which is not
> necessary.
> This is because, content of html page is escaped which result browser cant
> not parse it. Any content which is escaped should be with the HTML block ,
> but doc type is above html which browser can't parse it.
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