feat(parquet): add struct-column writer benchmarks#9679
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alamb merged 1 commit intoapache:mainfrom Apr 9, 2026
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Add three new benchmark cases to the arrow_writer benchmark suite for evaluating write performance on struct columns at varying null densities: - `struct_non_null`: a nullable struct with 0% null rows and non-nullable primitive children; - `struct_sparse_99pct_null`: a nullable struct with 99% null rows, exercising null batching through one level of struct nesting; - `struct_all_null`: a nullable struct with 100% null rows, exercising the uniform-null path through struct nesting. Baseline results (Apple M1 Max): struct_non_null/default 29.9 ms struct_non_null/parquet_2 38.2 ms struct_non_null/zstd_parquet_2 50.9 ms struct_sparse_99pct_null/default 7.2 ms struct_sparse_99pct_null/parquet_2 7.3 ms struct_sparse_99pct_null/zstd_p2 8.1 ms struct_all_null/default 83.3 µs struct_all_null/parquet_2 82.5 µs struct_all_null/zstd_parquet_2 106.6 µs Signed-off-by: Hippolyte Barraud <hippolyte.barraud@datadoghq.com>
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alamb
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Apr 9, 2026
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Thank you @HippoBaro |
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Which issue does this PR close?
Rationale for this change
#9653 introduces optimizations related to non-null uniform workloads. This adds benchmarks so we can quantify them.
What changes are included in this PR?
Add three new benchmark cases to the arrow_writer benchmark suite for evaluating write performance on struct columns at varying null densities:
struct_non_null: a nullable struct with 0% null rows and non-nullable primitive children;struct_sparse_99pct_null: a nullable struct with 99% null rows, exercising null batching through one level of struct nesting;struct_all_null: a nullable struct with 100% null rows, exercising the uniform-null path through struct nesting.Baseline results (Apple M1 Max):
Are these changes tested?
N/A
Are there any user-facing changes?
None