Sangjin Lee commented on YARN-3616:

Yes, I agree that we should emit some events from RM that NM cannot handle. I 
think we just need to enumerate clearly what events will be emitted by RM so 
there is no duplication.

> determine how to generate YARN container events
> -----------------------------------------------
>                 Key: YARN-3616
>                 URL: https://issues.apache.org/jira/browse/YARN-3616
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>    Affects Versions: YARN-2928
>            Reporter: Sangjin Lee
>            Assignee: Naganarasimha G R
> The initial design called for the node manager to write YARN container events 
> to take advantage of the distributed writes. RM acting as a sole writer of 
> all YARN container events would have significant scalability problems.
> Still, there are some types of events that are not captured by the NM. The 
> current implementation has both: RM writing container events and NM writing 
> container events.
> We need to sort this out, and decide how we can write all needed container 
> events in a scalable manner.

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