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https://issues.apache.org/jira/browse/YARN-6069?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15869117#comment-15869117
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Rohith Sharma K S commented on YARN-6069:
-----------------------------------------

I am not fan of adding daemon specific code snippet into yarn-server-common 
package with timeline service prefix. Since readerserver REST API are GET we 
need not to override any configurations so that directly 
HttpCrossOriginFilterInitializer can be used. 

> CORS support in timeline v2
> ---------------------------
>
>                 Key: YARN-6069
>                 URL: https://issues.apache.org/jira/browse/YARN-6069
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelinereader
>            Reporter: Sreenath Somarajapuram
>            Assignee: Rohith Sharma K S
>         Attachments: YARN-6069-YARN-5355.0001.patch
>
>
> By default the browser prevents accessing resources from multiple domains. In 
> most cases the UIs would be loaded form a domain different from that of  
> timeline server. Hence without CORS support, it would be difficult for the 
> UIs to load data from timeline v2.
> YARN-2277 must provide more info on the implementation.



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