Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/21470#discussion_r192274906
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/joins/HashJoin.scala ---
@@ -62,8 +62,9 @@ trait HashJoin {
}
protected lazy val (buildKeys, streamedKeys) = {
- require(leftKeys.map(_.dataType) == rightKeys.map(_.dataType),
- "Join keys from two sides should have same types")
+ require(leftKeys.map(_.dataType).zip(rightKeys.map(_.dataType)).forall
{
+ case (l, r) => BinaryOperator.sameType(l, r)
--- End diff --
I hit a test failure before changing this. This kind of check(assert,
require) can only be hitten when there is a bug.
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