Jason918 opened a new pull request #13426:
URL: https://github.com/apache/pulsar/pull/13426
Fixes #12726 for branch 2.9
### Motivation
See #12726
#12753 fixed this in master, but can not merged into branch 2.9.
### Modifications
Use thenAcceptAsync instead to avoid dead lock on metadata thread.
### Verifying this change
- [ ] Make sure that the change passes the CI checks.
This change is already covered by existing tests, such as
org.apache.pulsar.broker.admin.PersistentTopicsTest
### Does this pull request potentially affect one of the following parts:
*If `yes` was chosen, please highlight the changes*
- Dependencies (does it add or upgrade a dependency): (no)
- The public API: (no)
- The schema: (no)
- The default values of configurations: (no)
- The wire protocol: (no)
- The rest endpoints: (no)
- The admin cli options: (no)
- Anything that affects deployment: (no)
### Documentation
Check the box below and label this PR (if you have committer privilege).
Need to update docs?
- [x] `no-need-doc`
Bug fix.
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