Kimahriman commented on a change in pull request #32448:
URL: https://github.com/apache/spark/pull/32448#discussion_r631516011
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/ResolveUnion.scala
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@@ -181,7 +100,12 @@ object ResolveUnion extends Rule[LogicalPlan] {
// like that. We will sort columns in the struct expression to
make sure two sides of
// union have consistent schema.
aliased += foundAttr
- Alias(addFields(foundAttr, target), foundAttr.name)()
+ val targetType = try {
+ target.merge(source, conf.resolver)
+ } catch { case e: Throwable =>
+ throw
QueryExecutionErrors.failedToMergeIncompatibleSchemasError(target, source, e)
Review comment:
Done
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