srowen commented on a change in pull request #27523: [SPARK-30772][ML][SQL]
avoid tuple assignment because it will circumvent the transient tag
URL: https://github.com/apache/spark/pull/27523#discussion_r377358714
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/higherOrderFunctions.scala
##########
@@ -478,11 +482,13 @@ case class ArrayFilter(
}
}
- @transient lazy val (elementVar, indexVar) = {
+ @transient private lazy val tuple = {
val LambdaFunction(_, (elementVar: NamedLambdaVariable) +: tail, _) =
function
val indexVar = tail.headOption.map(_.asInstanceOf[NamedLambdaVariable])
(elementVar, indexVar)
}
+ @transient lazy val elementVar = tuple._1
Review comment:
Hm, this pattern is a little ugly / adds extra overhead, but might be
necessary vs just referencing "elementIndexVar._1" later in the code or
something similar.
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