etseidl opened a new pull request, #11953:
URL: https://github.com/apache/arrow-rs/pull/11953

   # Which issue does this PR close?
   
   - Closes #9067
   
   # Rationale for this change
   
   Applications with existing Parquet column metadata and an `AsyncFileReader` 
cannot currently load a Bloom filter through a public API without constructing 
a `ParquetRecordBatchStreamBuilder` or duplicating internal header parsing.
   
   Expose the async equivalent of `Sbbf::read_from_column_chunk` so 
metadata-only pruning code can read a selected physical column's Bloom filter 
directly.
   
   # What changes are included in this PR?
   
   Add `Sbbf::read_from_column_chunk_async<R: AsyncFileReader + ?Sized>` and 
delegate `ParquetRecordBatchStreamBuilder::get_row_group_column_bloom_filter` 
to it.
   
   # Are these changes tested?
   
   Yes, new tests are added.
   
   # Are there any significant user-facing changes?
   
   Adds to the public API, but changes no public signatures. Malformed lengths 
or incomplete bitsets will now return an error.
   
   # AI disclosure
   
   AI assistance was used to author the implementation and tests.
   


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