ahuang98 opened a new pull request, #16079:
URL: https://github.com/apache/kafka/pull/16079
- Changing log message from error to warn - We may expect the HW calculation
to give us a smaller result than the current HW in the case of quorum
reconfiguration. We will continue to _not_ allow the HW to actually decrease.
- Logic for finding the updated LeaderEndOffset for updateReplicaState is
changed as well. We do _not_ assume the leader is in the voter set and check
the observer states as well.
- Package-private method for removing nodes from the voterSet added to
LeaderState for testing purposes
- Two tests added which check
- Removing follower from voter set will not cause HW to decrease. HW will
continue to update once the other follower catches up
- Removing leader from voter set will not cause HW to decrease. HW will
continue to update once majority of new voter set (both followers in this case)
are caught up.
### 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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