cloud-fan commented on a change in pull request #34137:
URL: https://github.com/apache/spark/pull/34137#discussion_r718282534



##########
File path: 
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/ShowTablesExec.scala
##########
@@ -33,7 +33,8 @@ case class ShowTablesExec(
     output: Seq[Attribute],
     catalog: TableCatalog,
     namespace: Seq[String],
-    pattern: Option[String]) extends V2CommandExec with LeafExecNode {
+    pattern: Option[String],
+    listTempViews: Option[String] => Seq[Identifier]) extends V2CommandExec 
with LeafExecNode {

Review comment:
       do we need to pass this? All `SparkPlan` can access the current spark 
session by calling `this.session`

##########
File path: 
sql/core/src/test/scala/org/apache/spark/sql/execution/command/ShowTablesSuiteBase.scala
##########
@@ -40,6 +42,10 @@ trait ShowTablesSuiteBase extends QueryTest with 
DDLCommandTestUtils {
     checkAnswer(df, expected)
   }
 
+  after {
+    spark.sessionState.catalogManager.reset()

Review comment:
       what's the behavior today (with v1 commands)?

##########
File path: 
sql/core/src/test/scala/org/apache/spark/sql/execution/command/v1/ShowTablesSuite.scala
##########
@@ -143,6 +163,8 @@ trait ShowTablesSuiteBase extends 
command.ShowTablesSuiteBase {
  * The class contains tests for the `SHOW TABLES` command to check V1 
In-Memory table catalog.
  */
 class ShowTablesSuite extends ShowTablesSuiteBase with CommandSuiteBase {
+  override def version: String = super[ShowTablesSuiteBase].version

Review comment:
       is this line needed?




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