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From "Varun Saxena (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5739) Provide timeline reader API to list available timeline entity types for one application
Date Tue, 22 Nov 2016 21:54:58 GMT

    [ https://issues.apache.org/jira/browse/YARN-5739?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15688023#comment-15688023
] 

Varun Saxena commented on YARN-5739:
------------------------------------

Yeah I was referring to node label REST endpoints only when I said that we do use hyphens
in REST endpoints in YARN. I am fine with a hyphen and this was my suggestion too but there
was some comments above suggesting it without hyphens. So just wanted to bring it to notice.

> 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
>
>
> 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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