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7c09220210
Two CI failures, both addressed: (1) u32/u64 type mismatch in stage_append (compile error): ds.manifest.max_fragment_id is Option<u32>, but Lance's Fragment::id and the commit-time renumbering counter in Transaction::fragments_with_ids operate on u64. Cast max_fragment_id to u64 before the arithmetic. (2) scan_with_staged_pushes_filter_through_committed_and_staged failed because Lance's stats-based fragment pruning drops uncommitted staged fragments from filtered scans — they lack the per-column statistics that committed fragments carry. With filter `age >= 30` and a staged dave (age=35), dave is silently absent from the result. scanner.use_stats(false) does not bypass this in lance 4.0.0 (verified locally). Rather than chase Lance internals further, document the limitation: - stage_merge_insert / scan_with_staged docstring updated to flag the filter contract as incomplete on staged fragments. - Test renamed to scan_with_staged_with_filter_silently_drops_staged_rows and flipped to assert the actual behavior, with a clear note pointing at the design pivot (.context/mr-794-step2-design.md §1.1) and instructions for whoever sees the assertion fail in the future. - Test also asserts that unfiltered scan_with_staged returns all rows — confirms the issue is specifically filter pushdown, not fragment scanning per se. The engine's MR-794 step 2+ design (in-memory pending-batch accumulation + DataFusion MemTable for read-your-writes) sidesteps this entirely; production code is unaffected. scan_with_staged stays on the public surface for primitive-level testing and for callers that don't need filter pushdown. All 8 staged_writes tests + 10 runs + 63 end_to_end + consistency green locally. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> |
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