cloud-fan commented on a change in pull request #32718:
URL: https://github.com/apache/spark/pull/32718#discussion_r642887270
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/misc.scala
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@@ -283,3 +283,21 @@ case class TypeOf(child: Expression) extends
UnaryExpression {
override protected def withNewChildInternal(newChild: Expression): TypeOf =
copy(child = newChild)
}
+
+// scalastyle:off line.size.limit
+@ExpressionDescription(
+ usage = """_FUNC_() - Return the current user who is running SparkContext
for current query execution.""",
Review comment:
As a SQL function, we need to be engine-agnostic and define the semantic
without Spark.
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