Denovo1998 opened a new pull request, #23895:
URL: https://github.com/apache/pulsar/pull/23895
### Motivation
In Pulsar, consumers can subscribe to multiple topics by pattern or by
passing a list of topics.
However, currently, if you need to modify this pattern, it often requires
shutting down the existing consumers and creating new consumers with the new
pattern.
This is because in `MultiTopicConsumer`, each operation is applied to all
consumers.
We hope to dynamically add or remove certain topics without affecting other
subscribed topics.
We want a way to unsubscribe or close from certain consumers and add new
ones without restarting the entire consumer.
Additionally, these changes should remain optional for users who do not need
them.
This helps developers experiment with dynamic subscription capabilities
without cluttering the core consumer interface.
### Verifying this change
- [ ] Make sure that the change passes the CI checks.
*(Please pick either of the following options)*
This change is a trivial rework / code cleanup without any test coverage.
*(or)*
This change is already covered by existing tests, such as *(please describe
tests)*.
*(or)*
This change added tests and can be verified as follows:
*(example:)*
- *Added integration tests for end-to-end deployment with large payloads
(10MB)*
- *Extended integration test for recovery after broker failure*
### Does this pull request potentially affect one of the following parts:
<!-- DO NOT REMOVE THIS SECTION. CHECK THE PROPER BOX ONLY. -->
*If the box was checked, please highlight the changes*
- [ ] Dependencies (add or upgrade a dependency)
- [ ] The public API
- [ ] The schema
- [ ] The default values of configurations
- [ ] The threading model
- [ ] The binary protocol
- [ ] The REST endpoints
- [ ] The admin CLI options
- [ ] The metrics
- [ ] Anything that affects deployment
### 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: <!-- ENTER URL HERE -->
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