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Provide into_builder for bytearray #3326

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merged 4 commits into from
Dec 31, 2022

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viirya
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@viirya viirya commented Dec 12, 2022

Which issue does this PR close?

Closes #1981.

Rationale for this change

What changes are included in this PR?

Are there any user-facing changes?

@github-actions github-actions bot added the arrow Changes to the arrow crate label Dec 12, 2022
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@alamb alamb left a comment

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This is a pretty compelling feature @viirya 👍 I don't have enough of the low level buffer code loaded into my head to feel confident approving this without some more study. If no on else does so I'll try and find some time later this week

What do you think @avantgardnerio ?

arrow-array/src/array/string_array.rs Outdated Show resolved Hide resolved
@viirya viirya requested a review from tustvold December 19, 2022 21:05
arrow-array/src/builder/generic_bytes_builder.rs Outdated Show resolved Hide resolved
arrow-array/src/builder/generic_bytes_builder.rs Outdated Show resolved Hide resolved
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LGTM

fn test_into_builder_err() {
let array: StringArray = vec!["hello", "arrow"].into();

// Clone it, so we cannot get a mutable builder back
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👍

/// # Safety
/// This doesn't verify buffer contents as it assumes the buffers are from existing and
/// valid [`GenericByteArray`].
pub unsafe fn new_from_buffer(
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👍

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@tustvold tustvold left a comment

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I think we need to drop the mutable slice methods from GenericByteBuilder, as they currently can lead to UB

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Thank you for sticking with this 😄

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viirya commented Dec 30, 2022

Thanks @tustvold and @alamb for reviewing this (even during holidays 😄 ).

@viirya viirya merged commit ec43d6f into apache:master Dec 31, 2022
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ursabot commented Dec 31, 2022

Benchmark runs are scheduled for baseline = 808a982 and contender = ec43d6f. ec43d6f is a master commit associated with this PR. Results will be available as each benchmark for each run completes.
Conbench compare runs links:
[Skipped ⚠️ Benchmarking of arrow-rs-commits is not supported on ec2-t3-xlarge-us-east-2] ec2-t3-xlarge-us-east-2
[Skipped ⚠️ Benchmarking of arrow-rs-commits is not supported on test-mac-arm] test-mac-arm
[Skipped ⚠️ Benchmarking of arrow-rs-commits is not supported on ursa-i9-9960x] ursa-i9-9960x
[Skipped ⚠️ Benchmarking of arrow-rs-commits is not supported on ursa-thinkcentre-m75q] ursa-thinkcentre-m75q
Buildkite builds:
Supported benchmarks:
ec2-t3-xlarge-us-east-2: Supported benchmark langs: Python, R. Runs only benchmarks with cloud = True
test-mac-arm: Supported benchmark langs: C++, Python, R
ursa-i9-9960x: Supported benchmark langs: Python, R, JavaScript
ursa-thinkcentre-m75q: Supported benchmark langs: C++, Java

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Copy-On-Write Support to Support Mutating/Updating Arrays in Place
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