mybatis一个update语句，有的字段更新，有的字段偶尔不更新的情况

dubbo分布式系统下Java，mybatis一个update语句，有的字段更新，有的字段偶尔不更新的情况，有没有解决办法？

以下是部分代码片段

@Slf4j
public class UserSaveImpl implements UserSaveFacade {
    
    @Autowired
	private UserSaveService userSaveService;

    @Override
	@Transactional(rollbackFor = Exception.class)
	public void save(Long logId, Long userId, String op) throws Exception {
		try {
			Map re = userSaveService.update(logId, userId, op);
		} catch (Exception e) {
			throw new BizRuleException(e.getMessage());
		}
	}
}


@Slf4j
@Service
public class UserSaveService {

    @Autowired
	private UserSaveMapper userSaveMapper;

    @Autowired
	private LogSaveMapper logSaveMapper;

    public Map update(Long logId, Long userId, String op) throws Exception {
		try {
            Map re = new HashMap();
            LogSave logsave = logSaveMapper.selectByLogId(logId);
            if(!ObjectUtils.isEmpty(logsave)){
                //更新操作
                User user = new User();
                user.setName("张三");
                user.setValidFlag("1");//偶尔会有这个标志更新不掉
                user.setNote("已更新");
                user = userSaveMapper.update(user);
            }
			re.put("logId", logId);
			re.put("user ", user);            
            return re;
        } catch (Exception e) {
            throw new BizRuleException(e.getMessage());
        }    
    }
}