[Bug] Deadlock in SystemTopicBasedTopicPoliciesService in TopicsConsumerImplTest

[lhotari]

Search before asking

• I searched in the issues and found nothing similar.

Read release policy

• I understand that unsupported versions don't get bug fixes. I will attempt to reproduce the issue on a supported version of Pulsar client and Pulsar broker.

Version

master branch

Minimal reproduce step

Happened in https://github.com/apache/pulsar/actions/runs/11631141771/job/32397464599?pr=23540#step:13:1110 while running TopicsConsumerImplTest

What did you expect to see?

No deadlocks

What did you see instead?

The test didn't shutdown cleanly due to a deadlock.

Anything else?

This might also cause production issues although this happened in a test.

Thread dump: https://gist.github.com/lhotari/ce85ed30ed1c137b69aba7e03b63bfb6
Thread dump in analysis tool: https://jstack.review/?https://gist.github.com/lhotari/ce85ed30ed1c137b69aba7e03b63bfb6#tda_1_thread_generated-id-5

Are you willing to submit a PR?

• I'm willing to submit a PR!