yuluo-yx opened a new issue, #10849: URL: https://github.com/apache/rocketmq/issues/10849
### Description Static topic mapping sorts long epoch values by subtracting them and narrowing the result to int. When two epochs differ by more than Integer.MAX_VALUE, the comparator can reverse their order. In replacement mode, checkAndBuildMappingItems then keeps the stale broker mapping instead of the latest one. ### Expected behavior Epochs should be ordered with Long.compare so the newest mapping always wins without arithmetic overflow. ### Reproduction Create two mapping details for the same logical queue with epochs 0 and Long.MAX_VALUE, call checkAndBuildMappingItems with replace enabled, and observe that the epoch-0 mapping is selected. -- 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]
