Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/21439#discussion_r204932903
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/jsonExpressions.scala
---
@@ -544,34 +544,27 @@ case class JsonToStructs(
timeZoneId = None)
override def checkInputDataTypes(): TypeCheckResult = nullableSchema
match {
- case _: StructType | ArrayType(_: StructType, _) | _: MapType =>
+ case _: StructType | _: ArrayType | _: MapType =>
super.checkInputDataTypes()
case _ => TypeCheckResult.TypeCheckFailure(
s"Input schema ${nullableSchema.catalogString} must be a struct or
an array of structs.")
--- End diff --
`or an array of structs.` -> `or an array.`
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