Bikas Saha commented on YARN-3911:

I am sorry for the super delayed response. For some reason I was not a watcher 
on this. By tail I did not mean linux tail command but just the concept of 
sending the last set of entries (say last 4K of data) from the stderr and/or 
syslog if the container launch fails.

> Add tail of stderr to diagnostics if container fails to launch or it 
> container logs are empty
> ---------------------------------------------------------------------------------------------
>                 Key: YARN-3911
>                 URL: https://issues.apache.org/jira/browse/YARN-3911
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Bikas Saha
> The stderr may have useful info in those cases.

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