HyukjinKwon commented on a change in pull request #27580:
[SPARK-27619][SQL]MapType should be prohibited in hash expressions
URL: https://github.com/apache/spark/pull/27580#discussion_r379961053
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/hash.scala
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@@ -249,10 +247,20 @@ abstract class HashExpression[E] extends Expression {
override def nullable: Boolean = false
+ protected def hasMapType(dt: DataType): Boolean = {
Review comment:
Seems like it doesn't need to be `protected` at this moment.
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