v11.0.0-beta.15

What's Changed

New Features 🎉

• feat: add Dataset::migrate_to_stable_row_ids migration method by @westonpace in #8521
• feat(mem_wal): observe flush latency through the metrics facade by @hamersaw in #8625

Bug Fixes 🐛

• fix: make MemWAL HNSW snapshots publication-consistent by @Xuanwo in #8591
• fix(linalg): validate distance input lengths by @Xuanwo in #8594
• fix(python): return a shared background executor by @Xuanwo in #8596
• fix(encoding): always validate Arrow conversions by @Xuanwo in #8597
• fix(index): initialize BQ distance buffers by @Xuanwo in #8598
• fix(encoding): initialize bitpacking output buffers by @Xuanwo in #8599
• fix(select): make row address iterators safe by @Xuanwo in #8600
• fix(encoding): reject bytepacking overflow by @Xuanwo in #8601
• fix(encoding): reject zero fixed-size-list dimension in repdef decimation by @westonpace in #8618
• fix(index): avoid fragment reuse cache deadlock by @app/lance-gatefixer in #8620
• fix(table): restore migration_next_row_id on ManifestBuildConfig by @wjones127 in #8629

Performance Improvements 🚀

• perf(index): skip unnecessary null tracking for BTree and Bitmap indexes by @everySympathy in #8577

Other Changes

• refactor(table): move transaction helpers down into lance-table by @wjones127 in #8053
• refactor(table): move transaction.rs into lance-table by @wjones127 in #8054
• fix(core): keep assumptions checked in release builds by @Xuanwo in #8592
• fix(linalg): validate slice lengths before SIMD loads by @Xuanwo in #8593
• fix: serialize BatchStore writers by @Xuanwo in #8595
• fix(deps): bump h2 to 0.4.16 for RUSTSEC-2026-0258 by @Xuanwo in #8613
• refactor(dataset): rename FileFragment::write_column by @Xuanwo in #8622

Full Changelog: v11.0.0-beta.14...v11.0.0-beta.15