[SPARK-56168][PS][TESTS] Relax groupby diff-length assertions for pandas 3#54969
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ueshin wants to merge 1 commit intoapache:masterfrom
Open
[SPARK-56168][PS][TESTS] Relax groupby diff-length assertions for pandas 3#54969ueshin wants to merge 1 commit intoapache:masterfrom
ueshin wants to merge 1 commit intoapache:masterfrom
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zhengruifeng
approved these changes
Mar 24, 2026
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What changes were proposed in this pull request?
This PR updates the pandas-on-Spark diff-frame groupby length test in
test_groupby_diff_len.py.The changes are test-only:
subTestto make the failing case easier to identifyalmost=Truefor pandas 3.xas_index=Falseand can widen their dtype after aligning mismatched lengthsWhy are the changes needed?
The test behavior differs across pandas versions for mismatched-length external group keys.
With pandas 3.x,
groupby(..., as_index=False)can include the external group key in the result and widen its dtype after alignment. That makes the strict equality used by this test fail due to dtype differences even though the grouped values still match.This patch keeps the existing pandas 2 behavior untouched and relaxes the assertions only for pandas 3.x in this localized test.
Does this PR introduce any user-facing change?
No.
How was this patch tested?
Updated the related tests.
Was this patch authored or co-authored using generative AI tooling?
Generated-by: Codex (GPT-5)