Yufei Zhang created FLINK-25686:
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Summary: Support Pulsar Schema evolution in Pulsar Connector
Key: FLINK-25686
URL: https://issues.apache.org/jira/browse/FLINK-25686
Project: Flink
Issue Type: New Feature
Components: Connectors / Pulsar
Reporter: Yufei Zhang
Currently the source connector reads all messages as Message<byte[]>, and
implements a deserialization abstraction to deserialize the byte array message.
This deserialization abstraction supports both flink schema and pulsar schema.
However because of this extra layer of abstraction, even when using pulsar
schema, the schema info is not provided to the consumer (client), so it is not
using any pulsar’s schema validation mechanism. (If pulsar client has a schema,
it will send the schema to broker on connect and broker will validate if it is
a valid schema according to a preset compatibility rule :[
https://pulsar.apache.org/docs/en/schema-evolution-compatibility/|https://pulsar.apache.org/docs/en/schema-evolution-compatibility/]).
we need to support this schema evolution
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