Github user cloud-fan commented on the pull request:
https://github.com/apache/spark/pull/5831#issuecomment-98069090
cc @rxin, it's a quick fix but kind of ugly.
1. we can't disable eager analysis for this case.
2. the code is duplicated in Optimizer
3. break caching semantics as you said.
Actually I was thinking if it's bug or just wrong usage?
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