liangyepianzhou opened a new pull request, #20304:
URL: https://github.com/apache/pulsar/pull/20304
## Motivation
After initiating the snapshot segment function, deletion of topics
necessitates the activation of readers. Furthermore, these readers should be
opened and deleted as they are used, which implies that we should not pre-store
readers. However, after initiating the deletion of namespaces currently, it is
not allowed to obtain the metadata of partition topics, making it impossible to
create readers. This results in the inability to delete namespaces.
## Modification
Allow the acquisition of system topic metadata after initiating namespace
deletion, thus creating readers to clean up topic data.
### 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:
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- [ ] 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-complete` <!-- Docs have been already added -->
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