cloud-fan commented on a change in pull request #25085: [SPARK-28313][SQL]
Spark sql null type incompatible with hive void type
URL: https://github.com/apache/spark/pull/25085#discussion_r324999432
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/types/NullType.scala
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@@ -32,6 +32,8 @@ class NullType private() extends DataType {
override def defaultSize: Int = 1
private[spark] override def asNullable: NullType = this
+
+ override def simpleString: String = "void"
Review comment:
This is also an unrelated change. I like the new naming, but it's
unnecessary to the hive compatibility issue.
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