Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/10009#discussion_r46009403
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/Expression.scala
---
@@ -95,12 +95,15 @@ abstract class Expression extends TreeNode[Expression] {
ctx.subExprEliminationExprs.get(this).map { subExprState =>
// This expression is repeated meaning the code to evaluated has
already been added
// as a function, `subExprState.fnName`. Just call that.
+ val isNull = ctx.freshName("isNull")
+ val primitive = ctx.freshName("primitive")
--- End diff --
Actually, the above variables are not unnecessary. I will remove them later
if the test is passed.
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