Github user marmbrus commented on a diff in the pull request:
https://github.com/apache/spark/pull/9414#discussion_r44096217
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/Expand.scala ---
@@ -41,14 +41,34 @@ case class Expand(
// as UNKNOWN partitioning
override def outputPartitioning: Partitioning = UnknownPartitioning(0)
+ override def outputsUnsafeRows: Boolean = child.outputsUnsafeRows
+ override def canProcessUnsafeRows: Boolean = true
+ override def canProcessSafeRows: Boolean = true
+
+ protected val cleanedProjections = {
+ if (outputsUnsafeRows) {
+ projections.map { exprs =>
+ exprs.map(_ transform {
+ case CreateStruct(children) => CreateStructUnsafe(children)
--- End diff --
Should we do this inside of `UnsafeProjection.create`? It seems weird to
have to remember to do it in each place we use it.
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