[SPARK-40336][PS] Implement DataFrameGroupBy.cov#55775
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devin-petersohn wants to merge 1 commit intoapache:masterfrom
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[SPARK-40336][PS] Implement DataFrameGroupBy.cov#55775devin-petersohn wants to merge 1 commit intoapache:masterfrom
devin-petersohn wants to merge 1 commit intoapache:masterfrom
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HyukjinKwon
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### What changes were proposed in this pull request? Implement `DataFrameGroupBy.cov(min_periods, ddof, numeric_only)` in the pandas API on Spark. ### Why are the changes needed? Missing API coverage. ### Does this PR introduce _any_ user-facing change? Yes. ### How was this patch tested? Unit tests. ### Was this patch authored or co-authored using generative AI tooling? Generated-by: Claude Code (claude-opus-4-7) Closes #55775 from devin-petersohn/devin/groupby-cov. Authored-by: Devin Petersohn <devin.petersohn@gmail.com> Signed-off-by: Hyukjin Kwon <gurwls223@apache.org> (cherry picked from commit 7041d1e) Signed-off-by: Hyukjin Kwon <gurwls223@apache.org>
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What changes were proposed in this pull request?
Implement
DataFrameGroupBy.cov(min_periods, ddof, numeric_only)in the pandas API on Spark.Why are the changes needed?
Missing API coverage.
Does this PR introduce any user-facing change?
Yes.
How was this patch tested?
Unit tests.
Was this patch authored or co-authored using generative AI tooling?
Generated-by: Claude Code (claude-opus-4-7)