Github user yhuai commented on the pull request:
https://github.com/apache/spark/pull/10655#issuecomment-172371851
@RussellSpitzer Thank you for the comment. I totally agree with you.
As mentioned before, my only concern is that for ORC/Parquet, we will not
be able to see pushed filters in the explain output after the current change in
this PR. As a user of Parquet/ORC, I do want to see that a filter has been
pushed down even if this filter will not be applied to every row.
How about we go with Asterisks for now? You may need to keep the expression
that maps to a data source filter
(https://github.com/apache/spark/blob/master/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/DataSourceStrategy.scala#L536)
to generate the string.
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