Merge remote-tracking branch 'origin/master'

mec-im/src/main/java/com/ym/service/Impl/RoomServiceImpl.java

@@ -429,7 +429,7 @@ public class RoomServiceImpl implements RoomService {
         return roomMember;
     }
 
-    @Transactional(propagation = Propagation.REQUIRED, rollbackFor = Exception.class)
+    @Transactional(propagation = Propagation.REQUIRED, rollbackFor = Exception.class,isolation = Isolation.SERIALIZABLE)
     @Override
     public void leaveRoomSuccess(String roomId,String userId,String deviceNum) throws Exception {
         log.info("leaveRoomSuccess: roomId={}, userId={},deviceNum={}", roomId,userId,deviceNum);