ocadaruma opened a new pull request, #14513:
URL: https://github.com/apache/kafka/pull/14513
## Summary
- Currently, ReplicaFetcherThreadBenchmark doesn't run due to 2 reasons:
* NPE that is introduced by
https://github.com/apache/kafka/commit/755e04a41dfd00dd4587b0fe0980befd0ae5c433
- ZkMetadataCache instantiation causes NPE because we pass `null` for
`kraftControllerNodes` but it should be `Seq.empty`
* NotLeaderOrFollowerException that is introduced by
https://github.com/apache/kafka/commit/3467036e017adc3ac0919bbc0c067b1bb1b621f3
- Even we address above NPE issue, we still get
NotLeaderOrFollowerException
- ```
org.apache.kafka.common.errors.NotLeaderOrFollowerException: Error
while fetching partition state for topic-30
```
- This is because replicaManager doesn't host partitions when
RemoteLeaderEndPoint tries to build fetches
- This PR addresses these problems
- NPE issue on ZkMetadataCache instantiation also occurs in other several
benchmarks. This PR also fix these benchmarks.
### Committer Checklist (excluded from commit message)
- [ ] Verify design and implementation
- [ ] Verify test coverage and CI build status
- [ ] Verify documentation (including upgrade notes)
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