[SPARK-53877] Introduce BITMAP_AND_AGG function #52586
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Currently, Spark has two bitmap aggregation functions `bitmap_construct_agg` and `bitmap_or_agg` for constructing a bitmap out of set of integers and performing union on two sets represented by bitmaps, respectively. However, efficient intersect operation (bitwise AND) is missing. ## What changes were proposed in this pull request? - **Implemented `bitmap_and_agg` expression**: New aggregation function that performs bitwise AND operations on binary column inputs. ### Design Decisions - **Result on empty input is identity element for the operation**: Empty input groups return all-ones bitmaps (AND identity). - **Missing bytes handling**: For AND operations, missing bytes in input are treated as zeros to maintain intersection semantics. ## How was this patch tested? Added new test cases to cover `bitmap_and_agg` functionality: - **`BitmapExpressionsQuerySuite`**: Added test cases for basic AND operations, edge cases, empty group handling, and integration with other bitmap functions. ### Does this PR introduce _any_ user-facing change? No. ### Was this patch authored or co-authored using generative AI tooling? No. Closes apache#52586 from uros7251brick/add-bitmap-and-agg. Authored-by: Uros Stojkovic <uros.stojkovic@databricks.com> Signed-off-by: Wenchen Fan <wenchen@databricks.com>
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Currently, Spark has two bitmap aggregation functions
bitmap_construct_aggandbitmap_or_aggfor constructing a bitmap out of set of integers and performing union on two sets represented by bitmaps, respectively. However, efficient intersect operation (bitwise AND) is missing.What changes were proposed in this pull request?
bitmap_and_aggexpression: New aggregation function that performs bitwise AND operations on binary column inputs.Design Decisions
How was this patch tested?
Added new test cases to cover
bitmap_and_aggfunctionality:BitmapExpressionsQuerySuite: Added test cases for basic AND operations, edge cases, empty group handling, and integration with other bitmap functions.Does this PR introduce any user-facing change?
No.
Was this patch authored or co-authored using generative AI tooling?
No.