n0r0shi opened a new pull request, #3594:
URL: https://github.com/apache/datafusion-comet/pull/3594
# Summary
- Add Rust UDFs for Spark's `ByteArray.lpad`/`ByteArray.rpad`, triggered
when calling `lpad`/`rpad` on binary columns
- Left/right-pad binary arrays with a cyclic byte pattern, matching
Spark's behavior
- Wire via `StaticInvoke` handler in `statics.scala` with foldability
checks: str must be a column (not literal), len and pad must be scalar
- Update existing `testBinaryPadding` test expectations from fallback to
native execution for supported cases
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