Github user HyukjinKwon commented on a diff in the pull request: https://github.com/apache/spark/pull/22357#discussion_r215866501 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetSchemaPruning.scala --- @@ -196,6 +196,7 @@ private[sql] object ParquetSchemaPruning extends Rule[LogicalPlan] { */ private def getRootFields(expr: Expression): Seq[RootField] = { expr match { + case IsNotNull(_: Attribute) | IsNull(_: Attribute) => Seq.empty --- End diff -- But the case mentioned here looks specific to the pushed filter itself. Can we add a simple test for project case as well?
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