Github user HyukjinKwon commented on the pull request:
https://github.com/apache/spark/pull/10750#issuecomment-171527726
@viirya Yes, I think so. But the reason why I did not give a try for this
is, `expression._` is being rapidly changed, which could affect to update codes
at the datasource implemented by `CatalystScan` version by version. I believe
that this is also why Parquet datasource change its implementation of
`CatalystScan`.
So, maybe we should try to find a better solution for this..
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