cloud-fan 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_r242576917
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/trees/TreeNode.scala
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@@ -453,6 +454,7 @@ abstract class TreeNode[BaseType <: TreeNode[BaseType]]
extends Product {
case Some(serde) => table.identifier :: serde :: Nil
case _ => table.identifier :: Nil
}
+ case hint: JoinHint if hint.leftHint.isEmpty && hint.rightHint.isEmpty =>
Nil
Review comment:
or we can override `stringArgs` in Join.
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