Use bitmask for MaskedArray mask #59410
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Git repo of dependency: https://github.com/WillAyd/pandas-bitmask |
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Not 100% working yet but wanted to open for discussion to see if it is worth trying to finish. This replaces our current bytemask with a custom bitmask, but does so in a separately library. The advantage of the separate library is that the CI setup can be customized a bit further, with ASAN/gtest tooling that would be hard or awkward to set up in pandas. The disadvantage is that the separate library has a sole purpose of fitting the needs of pandas, as a lot of the logic built for it tries to merge NumPy indexing with memory backed by nanoarrow; I don't see that being a wide use case
@jbrockmendel @jorisvandenbossche @phofl in case of interest