feat: add snapshot update #408
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zhjwpku
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| snapshot_id]() -> Result<std::unique_ptr<ManifestWriter>> { | ||
| std::string manifest_path = ManifestPath(); | ||
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| if (format_version == 1) { |
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The related judgments for the format version (format_version) are scattered across multiple methods. Each version's logic exists in the form of if-else, encapsulating the processing logic of each version into independent implementations to avoid the expansion of if-else branches?
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I add MakeWriter helpers to wrap that, see #493
wgtmac
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I haven't reviewed snapshot_update.h/.cc yet. Just post my findings so far.
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| const TableMetadata& Transaction::current() const { return metadata_builder_->current(); } | ||
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| std::string Transaction::MetadataFileLocation(std::string_view filename) const { |
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It's also used in TableMetadataUtil::NewTableMetadataFilePath, I think it can be a public static method of TableMetadataUtil. Maybe do it in another PR.
dongxiao1198
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lgtm, this Finalize can be used in ExpireSnapshots also.
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Thanks @zhjwpku for working on this large and complex feature and others for the review! Let me merge this to unblock other conflicting PRs. |
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