Github user steveloughran commented on the pull request:
https://github.com/apache/spark/pull/9232#issuecomment-150700891
I've tightened this up and am happy with the code now, except I'm not sure
that NoSuchMethodExceptions should be downgraded. It will hide the situation of
incompatible Hive version on the CP yet principal required to talk to the hive
metastore. Provided the spark app doesn't want to talk to hive, it's not going
to matter. But if the app does want't to talk to hive, there'll be no cue
except for a log message at launch time, and failures in executors whenever
they try to set up an RPC connection. Leaving it as is retains backwards
compatibility though.
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