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https://issues.apache.org/jira/browse/YARN-5739?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Li Lu updated YARN-5739:
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    Attachment: YARN-5739-YARN-5355.006.patch

New patch to address review comments. 

> Provide timeline reader API to list available timeline entity types for one 
> application
> ---------------------------------------------------------------------------------------
>
>                 Key: YARN-5739
>                 URL: https://issues.apache.org/jira/browse/YARN-5739
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelinereader
>            Reporter: Li Lu
>            Assignee: Li Lu
>         Attachments: YARN-5739-YARN-5355.001.patch, 
> YARN-5739-YARN-5355.002.patch, YARN-5739-YARN-5355.003.patch, 
> YARN-5739-YARN-5355.004.patch, YARN-5739-YARN-5355.005.patch, 
> YARN-5739-YARN-5355.006.patch
>
>
> Right now we only show a part of available timeline entity data in the new 
> YARN UI. However, some data (especially library specific data) are not 
> possible to be queried out by the web UI. It will be appealing for the UI to 
> provide an "entity browser" for each YARN application. Actually, simply 
> dumping out available timeline entities (with proper pagination, of course) 
> would be pretty helpful for UI users. 
> On timeline side, we're not far away from this goal. Right now I believe the 
> only thing missing is to list all available entity types within one 
> application. The challenge here is that we're not storing this data for each 
> application, but given this kind of call is relatively rare (compare to 
> writes and updates) we can perform some scanning during the read time. 



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