releases: add release notes for v8.4.0 #18829
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…s for restores, BR Supports AWS IMDSv2 Signed-off-by: Aolin <[email protected]>
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Signed-off-by: Aolin <[email protected]>
Signed-off-by: Aolin <[email protected]>
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| > This section provides compatibility changes you need to know when you upgrade from v8.3.0 to the current version (v8.4.0). If you are upgrading from v8.2.0 or earlier versions to the current version, you might also need to check the compatibility changes introduced in intermediate versions. | ||
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TiKV upgrades its RocksDB lib version from 6.29 to 8.10. This change breaks the forward compatibility, since RocksDB introduced several new SST file custom tags that are not recognizable by older versions while loading MANIFEST files.
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| > **Note:** | ||
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| > This section provides compatibility changes you need to know when you upgrade from v8.3.0 to the current version (v8.4.0). If you are upgrading from v8.2.0 or earlier versions to the current version, you might also need to check the compatibility changes introduced in intermediate versions. | ||
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| ### Behavior changes | |
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@v01dstar Please add a note about this breaking change or submit a PR to upgrade https://docs.pingcap.com/tidb/dev/upgrade-tidb-using-tiup.
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It is not a behavior change. And it only affects downgrade, https://docs.pingcap.com/tidb/dev/upgrade-tidb-using-tiup explicitly says TiUP does not support downgrade. I don't think we need to update that doc?
First-time contributors' checklist
What is changed, added or deleted? (Required)
releases: add release notes for v8.4.0
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