Github user vanzin commented on the issue:
https://github.com/apache/spark/pull/23174
> via a mounted file
> Also the user should be able to specify their own mounted file
The point is that the user shouldn't need to set this at all. You enable
auth, Spark takes care of it. There's no point in specifying a pre-defined file
with the secret - in fact that makes things *less* secure, because you'd be
reusing the secret in different apps.
> Some users would prefer to avoid propagating sensitive information via
environment variables
Why? And how are mounted files better?
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