viirya commented on a change in pull request #32448:
URL: https://github.com/apache/spark/pull/32448#discussion_r629616627
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/types/StructType.scala
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@@ -483,8 +483,8 @@ case class StructType(fields: Array[StructField]) extends
DataType with Seq[Stru
* 4. Otherwise, `this` and `that` are considered as conflicting schemas and
an exception would be
* thrown.
*/
- private[sql] def merge(that: StructType): StructType =
- StructType.merge(this, that).asInstanceOf[StructType]
+ private[sql] def merge(that: StructType, resolver: Resolver = _ == _):
StructType =
Review comment:
Should we use `SQLConf.resolver` as default resolver?
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