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From "Sangjin Lee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3044) [Event producers] Implement RM writing app lifecycle events to ATS
Date Thu, 26 Mar 2015 18:09:55 GMT

    [ https://issues.apache.org/jira/browse/YARN-3044?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14382361#comment-14382361
] 

Sangjin Lee commented on YARN-3044:
-----------------------------------

That's a fair point. As a rule, we need to prevent users of the TimelineEntity API from setting
arbitrary types. The only way of creating a YARN app timeline entity for example should be
through instantiating ApplicationEntity.

We may need to make some of the methods that make this possible non-public, etc., although
it remains to be seen how much of that is doable, given json needs to be able to handle them.

If we have that, IMO the type-based casting should be acceptable (it should reject the entity
if the type says one thing and it is not the right class). Thoughts?

> [Event producers] Implement RM writing app lifecycle events to ATS
> ------------------------------------------------------------------
>
>                 Key: YARN-3044
>                 URL: https://issues.apache.org/jira/browse/YARN-3044
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>            Reporter: Sangjin Lee
>            Assignee: Naganarasimha G R
>         Attachments: YARN-3044.20150325-1.patch
>
>
> Per design in YARN-2928, implement RM writing app lifecycle events to ATS.



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