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Date: Fri, 2 Dec 2016 02:47:58 +0000 (UTC)
From: "Sangjin Lee (JIRA)" <jira@apache.org>
To: yarn-issues@hadoop.apache.org
Message-ID: <JIRA.13012490.1476484616000.419594.1480646878384@Atlassian.JIRA>
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References: <JIRA.13012490.1476484616000@Atlassian.JIRA> <JIRA.13012490.1476484616419@arcas>
Subject: [jira] [Commented] (YARN-5739) Provide timeline reader API to list
 available timeline entity types for one application
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archived-at: Fri, 02 Dec 2016 02:48:00 -0000


    [ https://issues.apache.org/jira/browse/YARN-5739?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15713829#comment-15713829 ] 

Sangjin Lee commented on YARN-5739:
-----------------------------------

The latest patch LGTM. Thanks [~gtCarrera9] for the update!

I'll wait until [~varun_saxena] takes a look at it, and then commit it if there are no objections.

> 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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