GitHub user BewareMyPower added a comment to the discussion: [Bug] Pulsar
Client ignores producer schema
> In the failed message produce, the data -m '{"family" : "genus" }' should
> have been rejected,
The schema validation only happens when the producer connects to the broker.
When the producer sends a message with wrong format, the message could still be
sent successfully. If you want to validate the schema when sending messages,
you should create an `AUTO_PRODUCE` producer. See
https://pulsar.apache.org/docs/2.11.x/schema-understand/#auto-schema
It seems that the Pulsar CLI cannot create an `AUTO_PRODUCE` producer currently.
BTW, `isSchemaValidationEnforced` only enforces the schema validation for bytes
producer. i.e. a bytes producer cannot connect to a topic that already has
schema, if users want to send messages via raw bytes, they have to create an
`AUTO_PRODUCE` producer.
GitHub link:
https://github.com/apache/pulsar/discussions/20586#discussioncomment-6187223
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