已验证

同步命令
超多列结果集透传
超多行结果集透传.
超大列结果集透传

source/src/main/java/io/mycat/mycat2/tasks/BackendSynchronzationTask.java

@@ -37,6 +37,7 @@ private void syncState(MySQLSession session) throws IOException {
         queryPacket.sql = session.isolation.getCmd() + session.autoCommit.getCmd() + session.isolation.getCmd();
         queryPacket.write(frontBuffer);
         frontBuffer.flip();
+        frontBuffer.readIndex = frontBuffer.writeIndex;
         session.writeToChannel(frontBuffer, session.backendChannel);
     }