maryannxue commented on a change in pull request #23036: [SPARK-26065][SQL]
Change query hint from a `LogicalPlan` to a field
URL: https://github.com/apache/spark/pull/23036#discussion_r245742847
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/basicLogicalOperators.scala
##########
@@ -350,6 +351,17 @@ case class Join(
case UsingJoin(_, _) => false
case _ => resolvedExceptNatural
}
+
+ // Ignore hint for canonicalization
+ protected override def doCanonicalize(): LogicalPlan =
+ super.doCanonicalize().asInstanceOf[Join].copy(hint = JoinHint.NONE)
Review comment:
It'd cause stack overflow.
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