[test] Add fluss compatibility test framework

Author: swuferhong

fluss-client/src/main/java/org/apache/fluss/client/admin/Admin.java

@@ -66,6 +66,9 @@
  * The administrative client for Fluss, which supports managing and inspecting tables, servers,
  * configurations and ACLs.
  *
+ * <p>Note: Any API changes should be accompanied by corresponding compatibility tests added in the
+ * fluss-compatibility-test module.
+ *
  * @since 0.1
  */
 @PublicEvolving

fluss-compatibility-test/fluss-compatibility-test-0.6/pom.xml

@@ -0,0 +1,67 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ 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.
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <parent>
+        <artifactId>fluss-compatibility-test</artifactId>
+        <groupId>org.apache.fluss</groupId>
+        <version>0.8-SNAPSHOT</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>fluss-compatibility-test-0.6</artifactId>
+    <name>Fluss : Compatibility Test : 0.6</name>
+
+    <properties>
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
+    </properties>
+
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.fluss</groupId>
+            <artifactId>fluss-compatibility-test-common</artifactId>
+            <version>${project.version}</version>
+            <type>test-jar</type>
+            <scope>test</scope>
+        </dependency>
+
+        <!-- Fluss Client dependency. The groupId need to be set as 'com.alibaba.fluss' for fluss-0.6 -->
+        <dependency>
+            <groupId>com.alibaba.fluss</groupId>
+            <artifactId>fluss-client</artifactId>
+            <version>0.6.1</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-deploy-plugin</artifactId>
+                <configuration>
+                    <skip>true</skip>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+</project>