[KYUUBI #7202] [AUTHZ] make FilteredShowObjectsExec extends V2CommandExec to avoid running executor side task

Now FilteredShowObjectsExec is not a subclass of V2CommandExec, when it was executed it will invoke `def doExecute(): RDD[InternalRow]` method to submit executor side task to run, which is slow and resource wasting.  V2CommandExec implemented `def executeCollect(): Array[InternalRow]` to avoid running `def doExecute(): RDD[InternalRow]`.

### Why are the changes needed?

Improve perfomance.

### How was this patch tested?

exists unit tests.

### Was this patch authored or co-authored using generative AI tooling?

No.

Closes #7202 from LennonChin/authz_filtered_show_objects.

Closes #7202

10b55e6 [Lennon Chin] [AUTHZ] make FilteredShowObjectsExec extends V2CommandExec to avoid running executor side task

Authored-by: Lennon Chin <i@coderap.com>
Signed-off-by: Bowen Liang <liangbowen@gf.com.cn>

Author: LennonChin

extensions/spark/kyuubi-spark-authz/src/main/scala/org/apache/kyuubi/plugin/spark/authz/rule/rowfilter/FilteredShowObjectsExec.scala

@@ -18,31 +18,28 @@ package org.apache.kyuubi.plugin.spark.authz.rule.rowfilter
 
 import org.apache.hadoop.security.UserGroupInformation
 import org.apache.spark.SparkContext
-import org.apache.spark.rdd.RDD
 import org.apache.spark.sql.catalyst.InternalRow
 import org.apache.spark.sql.catalyst.expressions.Attribute
 import org.apache.spark.sql.execution.{LeafExecNode, SparkPlan}
+import org.apache.spark.sql.execution.datasources.v2.V2CommandExec
 
 import org.apache.kyuubi.plugin.spark.authz.{ObjectType, OperationType}
 import org.apache.kyuubi.plugin.spark.authz.ranger.{AccessRequest, AccessResource, AccessType, SparkRangerAdminPlugin}
 import org.apache.kyuubi.plugin.spark.authz.util.AuthZUtils
 
-trait FilteredShowObjectsExec extends LeafExecNode {
+trait FilteredShowObjectsExec extends V2CommandExec with LeafExecNode {
   def result: Array[InternalRow]
-
-  override def output: Seq[Attribute]
-
-  final override def doExecute(): RDD[InternalRow] = {
-    sparkContext.parallelize(result, 1)
-  }
 }
 
 trait FilteredShowObjectsCheck {
   def isAllowed(r: InternalRow, ugi: UserGroupInformation): Boolean
 }
 
 case class FilteredShowNamespaceExec(result: Array[InternalRow], output: Seq[Attribute])
-  extends FilteredShowObjectsExec {}
+  extends FilteredShowObjectsExec {
+  override protected def run(): Seq[InternalRow] = result
+}
+
 object FilteredShowNamespaceExec extends FilteredShowObjectsCheck {
   def apply(delegated: SparkPlan, sc: SparkContext): FilteredShowNamespaceExec = {
     val result = delegated.executeCollect()
@@ -60,7 +57,10 @@ object FilteredShowNamespaceExec extends FilteredShowObjectsCheck {
 }
 
 case class FilteredShowTablesExec(result: Array[InternalRow], output: Seq[Attribute])
-  extends FilteredShowObjectsExec {}
+  extends FilteredShowObjectsExec {
+  override protected def run(): Seq[InternalRow] = result
+}
+
 object FilteredShowTablesExec extends FilteredShowObjectsCheck {
   def apply(delegated: SparkPlan, sc: SparkContext): FilteredShowNamespaceExec = {
     val result = delegated.executeCollect()