hi all,
Currently `MaxMessageSize` is hardcoded in Pulsar and it can’t be modified in server configuration. So there is no way when user want to modify the limit to transfer larger size message. Hence i propose adding a `MaxMessageSize` config in `broker.conf` to solve this problem. Because broker server will decide how much message size will be received so client need know how much message client can be sent. for details track following pip: https://gist.github.com/zymap/08ec1bb688d2da16e9cd363780480e7a
