Github user maropu commented on a diff in the pull request:
https://github.com/apache/spark/pull/21655#discussion_r198748442
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/catalog/SessionCatalog.scala
---
@@ -1366,4 +1367,18 @@ class SessionCatalog(
// copy over temporary views
tempViews.foreach(kv => target.tempViews.put(kv._1, kv._2))
}
+
+ private def validateLocationOfRename(oldName: TableIdentifier, newName:
TableIdentifier): Unit = {
--- End diff --
Can you add code comments along with `validateName`?
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