- [ ] I have searched the [issues](https://github.com/apache/incubator-dubbo/issues) of this repository and believe that this is not a duplicate.
- [ ] I have checked the [FAQ](https://github.com/apache/incubator-dubbo/blob/master/FAQ.md) of this repository and believe that this is not a duplicate.

### Environment

* Dubbo version: xxx
* Operating System version: xxx
* Java version: xxx

### Steps to reproduce this issue

1. xxx
2. xxx
3. xxx

Pls. provide [GitHub address] to reproduce this issue.

### Expected Result

What do you expected from the above steps？

### Actual Result

What actually happens?

If there is an exception, please attach the exception trace:

```
Just put your stack trace here!
```

if (!isConnected()) {
                            connect();
                        } else {
                            lastConnectedTime = System.currentTimeMillis();
                        }
                    } catch (Throwable t) {
                        String errorMsg = "client reconnect to " + getUrl().getAddress() + " find error . url: " + getUrl();
                        
                        if (System.currentTimeMillis() - lastConnectedTime > shutdown_timeout) {
                            if (!reconnect_error_log_flag.get()) {
                                reconnect_error_log_flag.set(true);
                                logger.error(errorMsg, t);
                                return;
                            }
                        }
                        if (reconnect_count.getAndIncrement() % reconnect_warning_period == 0) {
                            logger.warn(errorMsg, t);
                        }
                    }
                }
            };
            reconnectExecutorFuture = reconnectExecutorService.scheduleWithFixedDelay(connectStatusCheckCommand, reconnect, reconnect, TimeUnit.MILLISECONDS);
        }
    }
    private synchronized void destroyConnectStatusCheckCommand() {
        try {
            if (reconnectExecutorFuture != null && !reconnectExecutorFuture.isDone()) {
                reconnectExecutorFuture.cancel(true);
                reconnectExecutorService.purge();
            }