Steve Loughran commented on YARN-614:

I like this, but need to note one thing: our AM has a "suicide <delay>" IPC 
method which we use for testing AM failure -we tell the AM to kill itself and 
then YARN brings it up somewhere else.

It's essential that -somehow- I can replicate this behavior on live clusters. 
Is there a way to do it here? Perhaps an exit code from the AM that says 
"please restart". That would also allow live AMs to trigger a restart if they 
actually felt they were in a bad way

> Retry attempts automatically for hardware failures or YARN issues and set 
> default app retries to 1
> --------------------------------------------------------------------------------------------------
>                 Key: YARN-614
>                 URL: https://issues.apache.org/jira/browse/YARN-614
>             Project: Hadoop YARN
>          Issue Type: Improvement
>            Reporter: Bikas Saha
>            Assignee: Xuan Gong
>             Fix For: 2.5.0
>         Attachments: YARN-614-0.patch, YARN-614-1.patch, YARN-614-2.patch, 
> YARN-614-3.patch, YARN-614-4.patch, YARN-614-5.patch, YARN-614-6.patch, 
> YARN-614.7.patch
> Attempts can fail due to a large number of user errors and they should not be 
> retried unnecessarily. The only reason YARN should retry an attempt is when 
> the hardware fails or YARN has an error. NM failing, lost NM and NM disk 
> errors are the hardware errors that come to mind.

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