[GitHub] [rocketmq] XiaoyiPeng commented on pull request #3555: [Issue #3556] Fix:When broker is down, rocketmq client can not retry under Async send model

[GitBox <gi...@apache.org>]

XiaoyiPeng commented on pull request #3555:
URL: https://github.com/apache/rocketmq/pull/3555#issuecomment-982503190


   Asynchronous retry is here, in class `DefaultMQProducerImpl`, line: 843
   ```java
   private SendResult sendKernelImpl(final Message msg,
           final MessageQueue mq,
           final CommunicationMode communicationMode,
           final SendCallback sendCallback,
           final TopicPublishInfo topicPublishInfo,
           final long timeout) throws MQClientException, RemotingException, MQBrokerException, InterruptedException {
   // ...
   // line#843:
   sendResult = this.mQClientFactory.getMQClientAPIImpl().sendMessage(
                               brokerAddr,
                               mq.getBrokerName(),
                               tmpMessage,
                               requestHeader,
                               timeout - costTimeAsync,
                               communicationMode,
                               sendCallback,
                               topicPublishInfo,
                               this.mQClientFactory,
                               this.defaultMQProducer.getRetryTimesWhenSendAsyncFailed(),
                               context,
                               this);
   
   }
   ```


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