Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/22466#discussion_r220553606
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/command/ddl.scala ---
@@ -66,6 +66,19 @@ case class CreateDatabaseCommand(
extends RunnableCommand {
override def run(sparkSession: SparkSession): Seq[Row] = {
+ // SPARK-25464 fail if DB location exists and is not empty
+ if (path.isDefined) {
--- End diff --
not sure if we should do it here or in the external catalog, cc @gatorsmile
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