Github user vanzin commented on the pull request:
https://github.com/apache/spark/pull/6676#issuecomment-110553509
> My second goal is to improve standalone mode security by having a per-app
key. I think what we debate about is whether this is worth trying, given all
apps are running as the same user.
I think you're misunderstanding me. I'm arguing that using the env variable
to propagate the secret is *as secure* as using stdin. It's not about per-app
keys or anything else you're talking about.
Given that both as *as secure* there's no point in going with the more
complicated code.
That's all.
And if you'll use the argument that "oh but it's not as trivial to get the
key when it's passed via stdin", then you're missing the point of security.
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