yuluo-yx opened a new issue, #10873: URL: https://github.com/apache/rocketmq/issues/10873
### Before Creating the Bug Report - [x] I found a bug, not just a question. - [x] I searched open GitHub Issues and pull requests and found no duplicate. - [x] I confirmed that this bug belongs to Apache RocketMQ. ### Runtime platform environment macOS (Darwin), reproduced with an isolated local unit test. ### RocketMQ version Branch: develop Git commit: fd0c95920e0deac96ce2ae27442747cc5e65e930 ### JDK Version Zulu OpenJDK 8 (8.94.0.17) ### Describe the Bug BrokerData.selectBrokerAddr assumes brokerAddrs is non-null and non-empty. A default BrokerData instance throws NullPointerException, while an empty map reaches Random.nextInt(0) and throws IllegalArgumentException. ### Steps to Reproduce 1. Create a default BrokerData and call selectBrokerAddr. 2. Alternatively, set brokerAddrs to an empty HashMap and call selectBrokerAddr. 3. Observe the exception. ### What Did You Expect to See? The method should return null when no broker address is registered, consistent with its nullable selection result. ### What Did You See Instead? The method throws for both null and empty address tables. ### Additional Context Master preference and slave fallback remain valid; only the no-address boundary is affected. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
