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Remove abomonation to reduce unsoundness #575

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merged 3 commits into from
Sep 9, 2024

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frankmcsherry
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The unsafe keyword is the source of unsoundness in Rust, and we would like to minimize it. One particular villain (by its own admission) is abomonation, which provides unsafe serialization and deserialization in the name of performance. Although performance is great, the unsoundness that results from using unsafe is not.

This PR does not evaluate any performance considerations, nor does it even test whether bincode is a suitable replacement in the contexts in which it is used. Probably worth shaking that out before merging anything.

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Looks good! There are some logging types that implemented abomination, but don't support serde. Should they? We might not cover their construction and serialization in any of the tests.

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@frankmcsherry
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Rebased, and I think that all types that previously derived Abomonation now derive both Serialize and Deserialize. In the future there could be different traits to use (e.g. Columnable, or some other way of communicating "there is a SOA representation that can be memcpy'd around"), but .. I think we are good-ish to go?

@frankmcsherry frankmcsherry merged commit f54796a into TimelyDataflow:master Sep 9, 2024
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Thanks for the review!

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2 participants