Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/21655#discussion_r199963152
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/catalog/SessionCatalog.scala
---
@@ -619,6 +619,7 @@ class SessionCatalog(
requireTableExists(TableIdentifier(oldTableName, Some(db)))
requireTableNotExists(TableIdentifier(newTableName, Some(db)))
validateName(newTableName)
+ validateNewLocationOfRename(oldName, newName)
--- End diff --
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