mgaido91 commented on a change in pull request #23531: [SPARK-24497][SQL] Support recursive SQL query URL: https://github.com/apache/spark/pull/23531#discussion_r247539199
########## File path: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/trees/TreeNode.scala ########## @@ -289,13 +294,13 @@ abstract class TreeNode[BaseType <: TreeNode[BaseType]] extends Product { /** * Returns a copy of this node where `f` has been applied to all the nodes children. */ - def mapChildren(f: BaseType => BaseType): BaseType = { - if (children.nonEmpty) { + def mapChildren(f: BaseType => BaseType, forceCopy: Boolean = false): BaseType = { Review comment: I see, my point is that this is a very critical method, so I'd prefer to leave it unchanged. Do we really need that makeDeepCopy? If so, why do we need it? I hope we can rid of it somehow... ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org