viirya commented on a change in pull request #29776:
URL: https://github.com/apache/spark/pull/29776#discussion_r489791464
##########
File path:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/codegen/CodegenExpressionCachingSuite.scala
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@@ -109,3 +139,17 @@ case class MutableExpression() extends LeafExpression with
CodegenFallback {
override def nullable: Boolean = false
override def dataType: DataType = BooleanType
}
+
+/**
+ * An expression with evaluated state so we can know whether it is evaluated.
+ */
+case class MutableExpression2() extends LeafExpression with CodegenFallback {
Review comment:
OK.
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