bugfix: v0 ByteBuf should not decode by super class

changes/en-us/2.x.md

@@ -15,6 +15,7 @@ Add changes here for all PR submitted to the 2.x branch.
 - [[#6661](https://github.com/apache/incubator-seata/pull/6661)] fix `tableMeta` cache scheduled refresh issue
 - [[#6668](https://github.com/apache/incubator-seata/pull/6668)] thread safety issue when adding and removing instances
 - [[#6678](https://github.com/apache/incubator-seata/pull/6678)] fix the same record has different lowkeys due to mixed case of table names yesterday
+- [[#6697](https://github.com/apache/incubator-seata/pull/6697)] v0 ByteBuf should not decode by super class
 
 ### optimize:
 - [[#6499](https://github.com/apache/incubator-seata/pull/6499)] split the task thread pool for committing and rollbacking statuses

changes/zh-cn/2.x.md

@@ -16,6 +16,7 @@
 - [[#6661](https://github.com/apache/incubator-seata/pull/6661)] 修复`tableMeta`缓存定时刷新失效问题
 - [[#6668](https://github.com/apache/incubator-seata/pull/6668)] 解决namingserver同一个集群下instance添加和删除时的线程安全问题
 - [[#6678](https://github.com/apache/incubator-seata/pull/6678)] 修复由于表名大小写问题导致的相同记录生成不同RowKey的问题
+- [[#6697](https://github.com/apache/incubator-seata/pull/6697)] v0版本的ByteBuf不应由父类先解码
 
 
 ### optimize:

core/src/main/java/org/apache/seata/core/protocol/Version.java

@@ -88,8 +88,7 @@ public static String getChannelVersion(Channel c) {
     public static void checkVersion(String version) throws IncompatibleVersionException {
         long current = convertVersion(CURRENT);
         long clientVersion = convertVersion(version);
-        long divideVersion = convertVersion(VERSION_0_7_1);
-        if ((current > divideVersion && clientVersion < divideVersion) || (current < divideVersion && clientVersion > divideVersion)) {
+        if (current < clientVersion) {
             throw new IncompatibleVersionException("incompatible client version:" + version);
         }
     }

core/src/main/java/org/apache/seata/core/rpc/netty/v0/ProtocolDecoderV0.java

@@ -144,22 +144,11 @@ public RpcMessage decodeFrame(ByteBuf in) {
 
     @Override
     protected Object decode(ChannelHandlerContext ctx, ByteBuf in) throws Exception {
-        Object decoded;
         try {
-            decoded = super.decode(ctx, in);
-            if (decoded instanceof ByteBuf) {
-                ByteBuf frame = (ByteBuf)decoded;
-                try {
-                    return decodeFrame(frame);
-                } finally {
-                    frame.release();
-                }
-            }
+            return decodeFrame(in);
         } catch (Exception exx) {
             LOGGER.error("Decode frame error, cause: {}", exx.getMessage());
             throw new DecodeException(exx);
         }
-        return decoded;
     }
-
 }