QuakeWang opened a new pull request, #393:
URL: https://github.com/apache/paimon-rust/pull/393
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### Purpose
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Linked issue: Related to #378
Mosaic reads previously treated data predicates as residual only, so row
groups were read even when Mosaic row-group statistics could prove they could
not match.
This PR adds conservative row-group predicate pruning for Mosaic files while
preserving residual filtering semantics.
<!-- What is the purpose of the change -->
### Brief change log
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they address the issue -->
- Add a Mosaic `StatsAccessor` over row-group `ColumnStats`.
- Map file-level Paimon fields to Mosaic column indices by name.
- Convert supported Mosaic stats values into Paimon `Datum` for shared
stats pruning.
- Fail open when stats are missing or cannot be interpreted safely.
- Update `ReadBuilder` docs to describe generic format-level reader
pruning.
### Tests
<!-- List unit tests or integration cases to verify this change -->
- `cargo test -p paimon --features mosaic arrow::format::mosaic::tests --
--nocapture`
- `cargo fmt --check`
### API and Format
<!-- Does this change affect API or storage format -->
### Documentation
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