MarvinCai opened a new pull request #9583:
URL: https://github.com/apache/pulsar/pull/9583
Fixes #9582
### Motivation
The message negative ack will break the message ordering dispatch guarantee,
Key_Shared is an ordering dispatch guarantee subscription, so we should avoid
the message negative ack for the Key_Shared subscription.
### Modifications
Check if it's Key_Shared subscription type before negativeAcking messages.
### Verifying this change
This change added tests and can be verified as follows:
- *Added test case.*
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