Github user vanzin commented on the issue:
https://github.com/apache/spark/pull/17723
@mridulm if you're talking about
`ServiceCredentialProvider.obtainCredentials`, which is a public interface that
exposes UGI (`Credentials` in this case), then sure, it's probably worth to
tweak it so that the UGI dependency is hidden. Perhaps even
`credentialsRequired` could be hidden behind `obtainCredentials` to remove
another Hadoop API from this interface.
I just don't think it's worth it, at this point in time, to spend time
worrying about the underlying implementation using UGI or not.
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