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Speed up JSON schema inference by ~2.8x #9494

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Speed up JSON schema inference by ~2.8x #9494

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88fc3f4
Rewrite JSON schema inference logic, and move it into its own module
Rafferty97 Feb 28, 2026
27b07c3
Remove "mixed_arrays.json" as the reader can't actually handle
Rafferty97 Feb 28, 2026
8d99f99
Re-implement `infer_json_schema` to make use of `TapeDecoder`, removing
Rafferty97 Feb 28, 2026
e82462a
Fix licenses, clippy fixes, remove unused `indexmap` crate
Rafferty97 Feb 28, 2026
52f2139
Removed `bumpalo`, and use `Arc`s instead
Rafferty97 Mar 17, 2026
1b5d16b
Fix clippy errors
Rafferty97 Mar 17, 2026
6ee6985
PR feedback and refactoring
Rafferty97 Mar 21, 2026
cfba988
Make `InferTy` an enum directly rather than a newtyped `Arc`, and
Rafferty97 Mar 21, 2026
b5df8ca
Memoize common types
Rafferty97 Mar 21, 2026
469b437
Fix accidental `const` instead of `static`
Rafferty97 Mar 21, 2026
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1 change: 0 additions & 1 deletion arrow-json/Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -42,7 +42,6 @@ arrow-cast = { workspace = true }
arrow-data = { workspace = true }
arrow-schema = { workspace = true }
half = { version = "2.1", default-features = false }
indexmap = { version = "2.0", default-features = false, features = ["std"] }
num-traits = { version = "0.2.19", default-features = false, features = ["std"] }
serde_core = { version = "1.0", default-features = false }
serde_json = { version = "1.0", default-features = false, features = ["std"] }
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