Github user davies commented on a diff in the pull request:
https://github.com/apache/spark/pull/9565#discussion_r44374607
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/ScalaUDF.scala
---
@@ -1041,6 +371,10 @@ case class ScalaUDF(
"""
}
- private[this] val converter =
CatalystTypeConverters.createToCatalystConverter(dataType)
- override def eval(input: InternalRow): Any = converter(f(input))
+ override def eval(input: InternalRow): Any = {
+ val projected = InternalRow.fromSeq(children.map(_.eval(input)))
+ val outputEncoder: ExpressionEncoder[Row] =
--- End diff --
`outputEncoder` should be created outside of `eval`, or it will be too slow.
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