BewareMyPower commented on issue #6945: URL: https://github.com/apache/pulsar/issues/6945#issuecomment-634739076
You could create multiple producers and deliver the message to the right producer associated with the key. **However, I suspected that it's broker's problem.** Here is my experiment: First, I created 2 producers and 2 consumers. The producers' batching max publish delay ms are both 3000, which is large enough for batching. Then I used one producer to send messages with key "A", and another producer to send messages with key "B". Only one consumer could receive the messages: ``` topic: persistent://public/default/FooTest | payload: 0 | key: A | id: (3084,40,-1,0) topic: persistent://public/default/FooTest | payload: 2 | key: A | id: (3084,40,-1,1) topic: persistent://public/default/FooTest | payload: 4 | key: A | id: (3084,40,-1,2) topic: persistent://public/default/FooTest | payload: 6 | key: A | id: (3084,40,-1,3) topic: persistent://public/default/FooTest | payload: 8 | key: A | id: (3084,40,-1,4) topic: persistent://public/default/FooTest | payload: 1 | key: B | id: (3084,41,-1,0) topic: persistent://public/default/FooTest | payload: 3 | key: B | id: (3084,41,-1,1) topic: persistent://public/default/FooTest | payload: 5 | key: B | id: (3084,41,-1,2) topic: persistent://public/default/FooTest | payload: 7 | key: B | id: (3084,41,-1,3) topic: persistent://public/default/FooTest | payload: 9 | key: B | id: (3084,41,-1,4) ``` From the 4th field of message id, which is the batch index, you can see 10 messages of 2 keys were sent by 2 batched messages. But if I disabled batching and sent the messages again, one consumer received messages with key "A", another consumer received messages with key "B". ---------------------------------------------------------------- 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. For queries about this service, please contact Infrastructure at: us...@infra.apache.org
