Github user HyukjinKwon commented on the pull request:
https://github.com/apache/spark/pull/10427#issuecomment-167039644
@maropu I believe it is a Parquet stuff. AFAIK, the columns in filters
should be set to `requestedSchema` for Parquet. But
[this](https://github.com/apache/spark/blob/master/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/DataSourceStrategy.scala#L342-L348)
exlcudes the columns for pushed filters.
Actually, I am now talking with @yhuai to check if it is really an issue.
For me I think we can simply include the columns for pushed filters as well
just for safety.
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