Github user mgaido91 commented on a diff in the pull request:
https://github.com/apache/spark/pull/21598#discussion_r196798555
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/collectionOperations.scala
---
@@ -75,28 +75,44 @@ trait BinaryArrayExpressionWithImplicitCast extends
BinaryExpression
> SELECT _FUNC_(array('b', 'd', 'c', 'a'));
4
""")
-case class Size(child: Expression) extends UnaryExpression with
ExpectsInputTypes {
+case class Size(
+ child: Expression,
+ legacySizeOfNull: Boolean)
+ extends UnaryExpression with ExpectsInputTypes {
+
+ def this(child: Expression) =
+ this(
+ child,
+ legacySizeOfNull = SQLConf.get.getConf(SQLConf.LEGACY_SIZE_OF_NULL))
--- End diff --
since now we can access the conf also on executor side, do we need these
changes? Can't we just get this value as a `val`?
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