3pacccccc opened a new pull request, #24610:
URL: https://github.com/apache/pulsar/pull/24610
### Motivation
Currently, `ZeroQueueConsumerImpl` with `MessagePayloadProcessor` enabled
can incorrectly receive batch messages when it shouldn't. This occurs because:
1. The message payload processor processes batch messages before checking if
the consumer is a zero-queue consumer
2. This behavior contradicts the expected behavior of zero-queue consumers
which should not buffer any messages
The issue can be reproduced when:
- Using a `MessagePayloadProcessor` that processes batch messages
### Modifications
1. Added early check in `processPayloadByProcessor` to detect zero-queue
consumers receiving batch messages
2. For zero-queue consumers with batch messages, bypass the payload
processor and directly use `receiveIndividualMessagesFromBatch`
3. Added new test case
`testZeroQueueSizeConsumerWithPayloadProcessorReceiveBatchMessage` to verify
the fix
### Verifying this change
- [x] 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
<!-- DO NOT REMOVE THIS SECTION. CHECK THE PROPER BOX ONLY. -->
- [ ] `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: https://github.com/3pacccccc/pulsar/pull/20
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