poorbarcode opened a new pull request, #25437:
URL: https://github.com/apache/pulsar/pull/25437
### Motivation
**Background**
- Under schema-validation-enforced settings
- Create a producer with `AUTO_PRODUCE` schema
- The producer started.
- Registers a new schema to the topic by Admin
- The producer reconnects
- **(Highlight)Issue**: the producer could reconnect with stale
`AutoProduceBytesSchema (BYTES)`, which then became incompatible with the
schema already registered on the cluster.
You can reproduce the issue with the new test
`testReplicationReconnectWithSchemaValidationEnforced`
### Modifications
The goal is to make replication recover automatically: when an
`IncompatibleSchemaException` occurs, refresh the topic schema and retry
producer creation so the replication pipeline can resume.
### Documentation
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- [ ] `doc` <!-- Your PR contains doc changes. -->
- [ ] `doc-required` <!-- Your PR changes impact docs and you will update
later -->
- [x] `doc-not-needed` <!-- Your PR changes do not impact docs -->
- [ ] `doc-complete` <!-- Docs have been already added -->
### Matching PR in forked repository
PR in forked repository: x
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