Github user sryza commented on the pull request:
https://github.com/apache/spark/pull/29#issuecomment-36275981
I'm not familiar with what the secrets are used for as opposed to the
tokens. Do you know the reason they're not needed in the MR1 code? Either way,
having YarnSparkHadoopUtils override runAsUser with something that calls
addCredentials doesn't sound too difficult.
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