Github user maropu commented on the pull request: https://github.com/apache/spark/pull/10593#issuecomment-171666309 @nongli Great work. One question; we need not have common APIs to realize batched de-serialization for other data sources like ORC? I know we currently have no specialized `RecordReader` for ORC though, I think we can apply the same optimization into the data source in future.
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