Github user mgummelt commented on the issue:
https://github.com/apache/spark/pull/16788
@vanzin Consolidating a Mesos and YARN kerberos solution sounds nice, but
it does worry me. I'm worried it's going to a) be quite a chore to factor out
the YARN Kerberos code, and more importantly b) be difficult to test on YARN to
ensure we haven't broken anything. I've never setup a YARN cluster. How
difficult is it?
I already have a method for bringing up a Kerberized HDFS cluster. Should
we be able to test Spark on YARN against this cluster, or does HDFS need to be
running under the same YARN ResourceManager (I don't see any reason why it
should)?
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