feat: add benchmarks for json parser #9107
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Weijun-H
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alamb
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Jan 7, 2026
arrow-json/benches/wide_object.rs
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| c.bench_function("decode_wide_object_i64_json", |b| { | ||
| b.iter(|| { | ||
| let mut decoder = ReaderBuilder::new(schema.clone()) | ||
| .with_batch_size(1024) |
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I recommend using batch size of 4k or 8k to better mirror production
Also then I would recommend using like 128k input rows perhaps
alamb
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Jan 7, 2026
alamb
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…creased row and batch sizes
…rojection files and adding json-reader benchmark
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Thank you @Weijun-H |
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Which issue does this PR close?
Rationale for this change
Add targeted JSON reader benchmarks to track performance for wide objects, hex-encoded binary inputs, and projection workloads.
What changes are included in this PR?
arrow-json/benches/wide_object.rsfor wide-object decode/serialize benchmarks.arrow-json/benches/binary_hex.rsfor hex string decoding into Binary/FixedSizeBinary/BinaryView.arrow-json/benches/wide_projection.rsfor full vs projected schema decoding.Are these changes tested?
No
Are there any user-facing changes?
No