[enhance](Cooldown) add SessionVariable for enableCooldownReplicaAffi…

…nity

regression-test/suites/show_p0/test_show_tranction.groovy

@@ -0,0 +1,38 @@
+// 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.
+
+import org.apache.doris.regression.util.Http
+
+suite("test_show_variables", "p0") {
+
+    def result = sql """show variables like "enable_cooldown_replica_affinity%";"""
+    assertTrue(result[0][1]=="true")
+
+    result = sql """set  enable_cooldown_replica_affinity=false;"""
+    result = sql """show variables like "enable_cooldown_replica_affinity%";"""
+    assertTrue(result[0][1]=="false")
+
+    result = sql """set  enable_cooldown_replica_affinity=true;"""
+    result = sql """show variables like "enable_cooldown_replica_affinity%";"""
+    assertTrue(result[0][1]=="true")
+
+    result = sql """set GLOBAL enable_cooldown_replica_affinity=false;"""
+    result = sql """show variables like "enable_cooldown_replica_affinity%";"""
+    assertTrue(result[0][1]=="false")
+    result = sql """set GLOBAL enable_cooldown_replica_affinity=true;"""
+
+}