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https://issues.apache.org/jira/browse/YARN-8303?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16686556#comment-16686556
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Rohith Sharma K S commented on YARN-8303:
-----------------------------------------

[~abmodi] along with above comments, 2 of checkstyle warnings could be fixed 
also

> YarnClient should contact TimelineReader for application/attempt/container 
> report
> ---------------------------------------------------------------------------------
>
>                 Key: YARN-8303
>                 URL: https://issues.apache.org/jira/browse/YARN-8303
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Rohith Sharma K S
>            Assignee: Abhishek Modi
>            Priority: Critical
>         Attachments: YARN-8303.001.patch, YARN-8303.002.patch, 
> YARN-8303.003.patch, YARN-8303.poc.patch
>
>
> YarnClient get app/attempt/container information from RM. If RM doesn't have 
> then queried to ahsClient. When ATSv2 is only enabled, yarnClient will result 
> empty. 
> YarnClient is used by many users which result in empty information for 
> app/attempt/container report. 
> Proposal is to have adapter from yarn client so that app/attempt/container 
> reports can be generated from AHSv2Client which does REST API to 
> TimelineReader and get the entity and convert it into app/attempt/container 
> report.



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