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Implement ord for FixedSizeBinary types #2905

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merged 2 commits into from Oct 21, 2022
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maxburke
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@maxburke maxburke commented Oct 20, 2022

Which issue does this PR close?

Closes #2904

Rationale for this change

Implementing sorting / grouping in datafusion on columns of type FixedSizeBinary requires that ord be implemented for FixedSizeBinary types.

@github-actions github-actions bot added the arrow Changes to the arrow crate label Oct 20, 2022
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@tustvold tustvold left a comment

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Could we get some tests of this please 🙏

I also think the ticket link is incorrect

@@ -295,6 +295,14 @@ pub fn build_compare(left: &dyn Array, right: &dyn Array) -> Result<DynComparato
let right: Decimal128Array = Decimal128Array::from(right.data().clone());
Box::new(move |i, j| left.value(i).cmp(&right.value(j)))
}
(FixedSizeBinary(_), FixedSizeBinary(_)) => {
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FYI the comparison and sort kernels do not make use of this DynComparator, and I actually hope to at some point deprecate it in favor of the row format.

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That may be but we were running into the unhandled case in this match firing when testing apache/datafusion#3911

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Tests added, issue link fixed.

use crate::error::Result;
use std::cmp::Ordering;

#[test]
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@tustvold tustvold Oct 20, 2022

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Even better would be some tests with more than one value in the list, and some tests of more than just Ordering::Less, but don't feel strongly 😅

@tustvold tustvold merged commit f629a2e into apache:master Oct 21, 2022
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ursabot commented Oct 25, 2022

Benchmark runs are scheduled for baseline = be48377 and contender = f629a2e. f629a2e 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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Ordering not implemented for FixedSizeBinary types
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