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https://issues.apache.org/jira/browse/YARN-3273?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14364094#comment-14364094
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Jian He commented on YARN-3273:
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looks good, one minor comment:
"“ private Resource applicationHeadroom = Resource.newInstance(0, 0);” - we may
use volatile keyword for this too.
could you look at the test failures too ? thanks !
> Improve web UI to facilitate scheduling analysis and debugging
> --------------------------------------------------------------
>
> Key: YARN-3273
> URL: https://issues.apache.org/jira/browse/YARN-3273
> Project: Hadoop YARN
> Issue Type: Improvement
> Reporter: Jian He
> Assignee: Rohith
> Attachments: 0001-YARN-3273-v1.patch, 0001-YARN-3273-v2.patch,
> 0002-YARN-3273.patch, YARN-3273-am-resource-used-AND-User-limit-v2.PNG,
> YARN-3273-am-resource-used-AND-User-limit.PNG,
> YARN-3273-application-headroom-v2.PNG, YARN-3273-application-headroom.PNG
>
>
> Job may be stuck for reasons such as:
> - hitting queue capacity
> - hitting user-limit,
> - hitting AM-resource-percentage
> The first queueCapacity is already shown on the UI.
> We may surface things like:
> - what is user's current usage and user-limit;
> - what is the AM resource usage and limit;
> - what is the application's current HeadRoom;
>
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