[GitHub] [spark] yaooqinn commented on a diff in pull request #40437: [SPARK-41259][SQL] SparkSQLDriver Output schema and result string should be consistent

["yaooqinn (via GitHub)" <gi...@apache.org>]

yaooqinn commented on code in PR #40437:
URL: https://github.com/apache/spark/pull/40437#discussion_r1152809362


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sql/core/src/main/scala/org/apache/spark/sql/catalyst/analysis/KeepCommandOutputWithHive.scala:
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@@ -0,0 +1,47 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.spark.sql.catalyst.analysis
+
+import org.apache.spark.sql.catalyst.plans.logical.{LogicalPlan, Project, ShowTables}
+import org.apache.spark.sql.catalyst.rules.Rule
+import org.apache.spark.sql.execution.command.{ShowTablesCommand, ShowViewsCommand}
+import org.apache.spark.sql.internal.SQLConf
+
+object KeepCommandOutputWithHive extends Rule[LogicalPlan] {
+  override def apply(plan: LogicalPlan): LogicalPlan = {
+    if (conf.getConf(SQLConf.LEGACY_KEEP_COMMAND_OUTPUT_SCHEMA_WITH_HIVE)) {

Review Comment:
   If this rule is thrift server specific and we do need to adjust, we can add it as a spark session extension in SparkSQLDriver 



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