ivankelly opened a new pull request #2669: Clarify and add tests for schema change scenarios URL: https://github.com/apache/pulsar/pull/2669 A producer with a schema can attach to a topic if - the topic does not exist - the topic exists but currently has no schema - the topic exists and the schema is compatible with the producer schema A consumer with a schema can attach to a topic if - the topic does not exist (the schema from the consumer is added to the topic) - the topic exists and the schema is compactible with the consumer schema A producer without a schema can attach if - the topic does not exist - the topic exists and has no schema A consumer without a schema can attach if - the topic exists, either with or without a schema
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