Github user michaelmior commented on the issue: https://github.com/apache/spark/pull/9428 @zsxwing Thanks for the pointer. It's not clear to me why this needs to be supported (and in fact the test no longer exists). However, I'm also not clear why the tests fails in the first place (I compiled and ran the code) but that's probably because I'm relatively new to Scala and don't fully understand the semantics of lazy vals.
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