Hi all; I am drafting a proposal to support the producer to send messages with different schema.
## Motivation For now, Pulsar producer can only produce messages of one type of schema which is determined by user when it is created, or by fecthing the latest version of schema from registry if AUTO_PRODUCE_BYTES type is specified. Schema, however, can be updated by external system after producer started, which would lead to inconsistency between messsage payload and schema version metadata. Also some senarios like replicating from kafka require a single producer for replicating messages of different schemas from one Kafka partition to one Pulsar partition to guarantee the order and no duplicates. Here proposing that messages can indicate the associated schema by itself, for more detail, https://gist.github.com/yittg/56c6dedf7509f634ec7effc4f6f3631d#file-pip-md Looking forward to any feedback. Thanks, Yi
