**BUG REPORT** 1. Please describe the issue you observed:   As the picture above shows, the default value of the parameter `sendMsgTimeout` is 10000, **but in the code**, the default value is **3000**. https://github.com/apache/rocketmq/blob/bda0ae0305863cc5fa2e0578439dfa4f4d9908b3/client/src/main/java/org/apache/rocketmq/client/producer/DefaultMQProducer.java#L102 2. Please tell us about your environment: 3. Other information (e.g. detailed explanation, logs, related issues, suggestions how to fix, etc): OS: Mac OS Catalina branch: develop