Github user robbinspg commented on the pull request: https://github.com/apache/spark/pull/12397#issuecomment-212358250 @hvanhovell Yes I will. I'm trying to get a stable base benchmark first as running the ParquetReadBenchmark repeatedly against the base code (before either PR) I get what looks like a 10% variation in results. The same is true with either of the PRs applied so I will average out the runs. As far as subclassing goes I would expect performance on LE to remain the same as the code path should be identical once the classes are instantiated. Performance on BE between the 2 approaches is another thing but not the major concern at the moment as we are going from failing/exceptions thrown to "working"
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