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Experiment with StreamEncoder::encode_to #10985

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796c8a0
feat(ipc): prototype StreamEncoder output
Phoenix500526 Sep 4, 2026
93487fd
test(ipc): align StreamWriter benchmarks
Phoenix500526 Sep 12, 2026
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92 changes: 86 additions & 6 deletions arrow-ipc/benches/ipc_writer.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -27,6 +27,7 @@ use arrow_ipc::writer::{
use arrow_schema::{DataType, Field, Schema};
use criterion::{Criterion, criterion_group, criterion_main};
use std::hint::black_box;
use std::io::Write;
use std::sync::Arc;

fn criterion_benchmark(c: &mut Criterion) {
Expand All @@ -42,24 +43,29 @@ fn criterion_benchmark(c: &mut Criterion) {
writer.write(&batch).unwrap();
}
writer.finish().unwrap();
black_box(&buffer);
})
});

group.bench_function("StreamWriter/write_10/zstd", |b| {
let batch = create_batch(8192, true);
let options = IpcWriteOptions::default()
.try_with_compression(Some(CompressionType::ZSTD))
.unwrap();
let mut buffer = Vec::with_capacity(2 * 1024 * 1024);
b.iter(move || {
buffer.clear();
let options = IpcWriteOptions::default()
.try_with_compression(Some(CompressionType::ZSTD))
.unwrap();
let mut writer =
StreamWriter::try_new_with_options(&mut buffer, batch.schema().as_ref(), options)
.unwrap();
let mut writer = StreamWriter::try_new_with_options(
&mut buffer,
batch.schema().as_ref(),
options.clone(),
)
.unwrap();
for _ in 0..10 {
writer.write(&batch).unwrap();
}
writer.finish().unwrap();
black_box(&buffer);
})
});

Expand All @@ -74,6 +80,38 @@ fn criterion_benchmark(c: &mut Criterion) {
})
});

group.bench_function("StreamEncoder/encode_and_write_10", |b| {
let batch = create_batch(8192, true);
let mut buffer = Vec::with_capacity(2 * 1024 * 1024);
b.iter(move || {
buffer.clear();
let mut encoder = StreamEncoder::try_new(batch.schema().as_ref()).unwrap();
for _ in 0..10 {
for encoded in encoder.encode(&batch).unwrap() {
buffer.write_all(encoded.as_slice()).unwrap();
}
}
for encoded in encoder.finish().unwrap() {
buffer.write_all(encoded.as_slice()).unwrap();
}
black_box(&buffer);
})
});

group.bench_function("StreamEncoder/encode_to_10", |b| {
let batch = create_batch(8192, true);
let mut buffer = Vec::with_capacity(2 * 1024 * 1024);
b.iter(move || {
buffer.clear();
let mut encoder = StreamEncoder::try_new(batch.schema().as_ref()).unwrap();
for _ in 0..10 {
encoder.encode_to(&batch, &mut buffer).unwrap();
}
encoder.finish_to(&mut buffer).unwrap();
black_box(&buffer);
})
});

group.bench_function("StreamEncoder/encode_10/zstd", |b| {
let batch = create_batch(8192, true);
b.iter(move || {
Expand All @@ -89,6 +127,48 @@ fn criterion_benchmark(c: &mut Criterion) {
})
});

group.bench_function("StreamEncoder/encode_and_write_10/zstd", |b| {
let batch = create_batch(8192, true);
let options = IpcWriteOptions::default()
.try_with_compression(Some(CompressionType::ZSTD))
.unwrap();
let mut buffer = Vec::with_capacity(2 * 1024 * 1024);
b.iter(move || {
buffer.clear();
let mut encoder =
StreamEncoder::try_new_with_options(batch.schema().as_ref(), options.clone())
.unwrap();
for _ in 0..10 {
for encoded in encoder.encode(&batch).unwrap() {
buffer.write_all(encoded.as_slice()).unwrap();
}
}
for encoded in encoder.finish().unwrap() {
buffer.write_all(encoded.as_slice()).unwrap();
}
black_box(&buffer);
})
});

group.bench_function("StreamEncoder/encode_to_10/zstd", |b| {
let batch = create_batch(8192, true);
let options = IpcWriteOptions::default()
.try_with_compression(Some(CompressionType::ZSTD))
.unwrap();
let mut buffer = Vec::with_capacity(2 * 1024 * 1024);
b.iter(move || {
buffer.clear();
let mut encoder =
StreamEncoder::try_new_with_options(batch.schema().as_ref(), options.clone())
.unwrap();
for _ in 0..10 {
encoder.encode_to(&batch, &mut buffer).unwrap();
}
encoder.finish_to(&mut buffer).unwrap();
black_box(&buffer);
})
});

group.bench_function("FileWriter/write_10", |b| {
let batch = create_batch(8192, true);
let mut buffer = Vec::with_capacity(2 * 1024 * 1024);
Expand Down
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