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https://issues.apache.org/jira/browse/YARN-4142?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14743802#comment-14743802
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Sunil G commented on YARN-4142:
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Yes [~jlowe]. A limiting mechanism will be added for diagnostics. I will share 
a prototype.
"unregister cleanly from an attempt, and launch a new attempt" is also a useful 
one, its good if we can track the same in separate ticket. will raise a ticket 
if its fine to go in that direction also.

> add a way for an attempt to report an attempt failure
> -----------------------------------------------------
>
>                 Key: YARN-4142
>                 URL: https://issues.apache.org/jira/browse/YARN-4142
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: api
>    Affects Versions: 2.8.0
>            Reporter: Steve Loughran
>
> Currently AMs can report a failure with exit code and diagnostics text —but 
> only when exiting to a failed state. If the AM terminates for any other 
> reason there's no information held in the RM, just the logs somewhere —and we 
> know they don't always last.
> When an application explicitly terminates an attempt, it would be nice if it 
> could  optionally report something to the RM before it exited. The most 
> recent set of these could then be included in Application Reports, so 
> allowing client apps to count attempt failures and get exit details.



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