Github user brkyvz commented on a diff in the pull request:
https://github.com/apache/spark/pull/5616#discussion_r29213390
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/HiveTypeCoercion.scala
---
@@ -643,4 +644,26 @@ trait HiveTypeCoercion {
}
}
+ /**
+ * Casts types according to the expected input types for Expressions
that have the trait
+ * `ExpectsInputTypes`.
+ */
+ object ExpectedInputConversion extends Rule[LogicalPlan] {
+
+ def apply(plan: LogicalPlan): LogicalPlan = plan
transformAllExpressions {
+ // Skip nodes who's children have not been resolved yet.
+ case e if !e.childrenResolved => e
+
+ case e: ExpectsInputTypes if e.children.map(_.dataType) !=
e.expectedChildTypes =>
+ val newC = (e.children, e.children.map(_.dataType),
e.expectedChildTypes).zipped.map {
+ case (child, actual, expected) =>
+ if (actual == expected) {
--- End diff --
Java tests failed, because I removed the test data out of `TestData`. Got
this in as well :)
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