mirror of https://github.com/apache/kafka.git
3dba3125e9
3.3.0 was the first KRaft release that was deemed production-ready and also when KIP-778 (KRaft to KRaft upgrades) landed. Given that, it's reasonable for 4.x to only support upgrades from 3.3.0 or newer (the metadata version also needs to be set to "3.3" or newer before upgrading). Noteworthy changes: 1. `AlterPartition` no longer includes topic names, which makes it possible to simplify `AlterParitionManager` logic. 2. Metadata versions older than `IBP_3_3_IV3` have been removed and `IBP_3_3_IV3` is now the minimum version. 3. `MINIMUM_BOOTSTRAP_VERSION` has been removed. 4. Removed `isLeaderRecoverySupported`, `isNoOpsRecordSupported`, `isKRaftSupported`, `isBrokerRegistrationChangeRecordSupported` and `isInControlledShutdownStateSupported` - these are always `true` now. Also removed related conditional code. 5. Removed default metadata version or metadata version fallbacks in multiple places - we now fail-fast instead of potentially using an incorrect metadata version. 6. Update `MetadataBatchLoader.resetToImage` to set `hasSeenRecord` based on whether image is empty - this was a previously existing issue that became more apparent after the changes in this PR. 7. Remove `ibp` parameter from `BootstrapDirectory` 8. A number of tests were not useful anymore and have been removed. I will update the upgrade notes via a separate PR as there are a few things that need changing and it would be easier to do so that way. Reviewers: Chia-Ping Tsai <chia7712@gmail.com>, Jun Rao <junrao@gmail.com>, David Arthur <mumrah@gmail.com>, Colin P. McCabe <cmccabe@apache.org>, Justine Olshan <jolshan@confluen.io>, Ken Huang <s7133700@gmail.com> |
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