luoyuxia commented on code in PR #23353:
URL: https://github.com/apache/flink/pull/23353#discussion_r1330032479


##########
flink-table/flink-table-planner/src/test/java/org/apache/flink/table/planner/utils/JsonPlanTestBase.java:
##########
@@ -53,17 +58,30 @@
 import static org.assertj.core.api.Assertions.assertThat;
 
 /** The base class for json plan testing. */
-public abstract class JsonPlanTestBase extends AbstractTestBase {
+public abstract class JsonPlanTestBase {
+
+    private static final int DEFAULT_TASK_MANAGERS = 1;
+    private static final int DEFAULT_PARALLELISM = 4;
+
+    @RegisterExtension
+    private static final MiniClusterExtension MINI_CLUSTER_EXTENSION =
+            new MiniClusterExtension(
+                    new MiniClusterResourceConfiguration.Builder()
+                            .setNumberTaskManagers(DEFAULT_TASK_MANAGERS)
+                            .setNumberSlotsPerTaskManager(DEFAULT_PARALLELISM)

Review Comment:
   ```suggestion
                               .setNumberSlotsPerTaskManager(1)
   ```



##########
flink-table/flink-table-planner/src/test/java/org/apache/flink/table/planner/utils/JsonPlanTestBase.java:
##########
@@ -53,17 +58,30 @@
 import static org.assertj.core.api.Assertions.assertThat;
 
 /** The base class for json plan testing. */
-public abstract class JsonPlanTestBase extends AbstractTestBase {
+public abstract class JsonPlanTestBase {
+
+    private static final int DEFAULT_TASK_MANAGERS = 1;
+    private static final int DEFAULT_PARALLELISM = 4;
+
+    @RegisterExtension
+    private static final MiniClusterExtension MINI_CLUSTER_EXTENSION =
+            new MiniClusterExtension(
+                    new MiniClusterResourceConfiguration.Builder()
+                            .setNumberTaskManagers(DEFAULT_TASK_MANAGERS)

Review Comment:
   Nit: For simiplicity, 
   ```suggestion
                               .setNumberTaskManagers(4)
   ```



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