HyukjinKwon opened a new pull request, #48798: URL: https://github.com/apache/arrow/pull/48798
### Rationale for this change Fixed-size list scalars with equal values but different offsets were hashing to different values, violating the hash-equality contract. ### What changes are included in this PR? - Added `FIXED_SIZE_LIST` case in `ArrayHash` to scale child offsets by `list_size` - Added C++ test in `scalar_test.cc` for nested fixed-size lists - Added Python test in `test_scalars.py` ### Are these changes tested? Unit tests were added, and also manually tested. ### Are there any user-facing changes? Yes. ```python import pyarrow as pa inner = pa.list_(pa.int32(), 2) outer = pa.list_(inner, 3) g = pa.array([[[1, 2], [3, 4], [5, 6]], [[7, 8], [9, 10], [11, 12]]], type=outer) h = pa.array([[[7, 8], [9, 10], [11, 12]]], type=outer) # Comparing `[[7, 8], [9, 10], [11, 12]]` print(g[1] == h[0]) print(hash(g[1]) == hash(h[0])) ``` Before: ``` True False ``` After: ``` True True ``` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
