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src-kafka/metadata
Federico Valeri
aec07f76d7
In KIP-778 we introduced the "unsafe" (lossy) downgrade in case metadata has changes in one of the versions between target and current, as defined in MetadataVersion. The documentation says it is possible: "Note that the cluster metadata version cannot be downgraded to a pre-production 3.0.x, 3.1.x, or 3.2.x version once it has been upgraded. However, it is possible to downgrade to production versions such as 3.3-IV0, 3.3-IV1, etc." The command line tool shows that this doesn't work: bin/kafka-features.sh --bootstrap-server :9092 downgrade --metadata 3.4 --unsafe Could not downgrade metadata.version to 8. Invalid metadata.version 8. Unsafe metadata downgrade is not supported in this version. 1 out of 1 operation(s) failed. In addition to unsafe, also safe metadata downgrades are not supported in practice. For example, when you upgrade to 3.5, you land on 3.5-IV2 as metadata version, which has metadata changes and won't let you to downgrade. This is true for every other release at the moment. This change fixes the documentation to reflect that, and improves the error messages. Signed-off-by: Federico Valeri <fedevaleri@gmail.com> Reviewers: Luke Chen <showuon@gmail.com>, Jakub Scholz <github@scholzj.com> |
1 year ago | |
|---|---|---|
| .. | ||
| src | KAFKA-15537: Fix metadata downgrade documentation (#14484) | 1 year ago |
| .gitignore | KAFKA-13429: ignore bin on new modules (#11415) | 3 years ago |