Anubhav Dhoot commented on YARN-4087:

In general if we are not failing the daemon if fail fast flag is false, we 
still need to ensure we are not leaving inconsistent state in RM. For eg in 
YARN-4032. YARN-2019 is the other case where we did not need to do anything. 
This would mean every patch from now on that uses fail fast to not crash the 
daemon should consider taking corrective action to ensure correctness. Does 
that make sense?

> Set YARN_FAIL_FAST to be false by default
> -----------------------------------------
>                 Key: YARN-4087
>                 URL: https://issues.apache.org/jira/browse/YARN-4087
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Jian He
>            Assignee: Jian He
>         Attachments: YARN-4087.1.patch, YARN-4087.2.patch
> Increasingly, I feel setting this property to be false makes more sense 
> especially in production environment, 

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