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Changes

⚠️ Breaks

  • break: probe_scalar must resolve validity internally (#10134) @joseph-isaacs
  • Move BitPacked serde logic from VTable to Plugin (#9937) @mhk197
  • ScalarFnVtable's validity is parametrized by ReduceNode (#9932) @myrrc
  • Move the UUID extension dtype into encodings/uuid (#9588) @joseph-isaacs
  • Move FoR serde logic from VTable to Plugin (#10104) @mhk197
  • Register Delta, Zstd and Pco in the compression session, exclude them by builder mode (#10069) @mhk197
  • Filter compressor schemes by the session's allowed serialized IDs on build (#10067) @mhk197
  • Remove unused unbound expression analysis and traversal helpers (#9993) @mhk197
  • Move compression schemes to CompressionSession and construct BtrBlocksCompressorBuilder from Session (#10066) @mhk197
  • Bind expressions before optimizing (#10002) @mhk197
  • break: nth_child to return reference instead of clone (#10051) @joseph-isaacs
  • fix(array): honor the execution allocator for RowFn outputs (#10014) @connortsui20
  • fix(array): require unsafe row initialization evidence (#10013) @connortsui20
  • Support i128 and i256 decimals in DecimalByteParts encoding (#9834) @mhk197
  • Rework AggregateVTable (#9816) @robert3005
  • Filter compression schemes by serialized IDs instead of array IDs (#9914) @mhk197
  • feat(array): scalar probes with one-off and repeated probe types (#9843) @joseph-isaacs
  • ffi: create bool arrays (#8899) @myrrc

✨ Features

  • bench(statpopgen): run the suite on DataFusion as well as DuckDB (#10212) @joseph-isaacs
  • Execute FoR iteratively (#10156) @joseph-isaacs
  • Refine FoRScheme to per-chunk references when fastlanes.for.v2 is allowed (#10136) @mhk197
  • Encode/Decode Kernels for BlockedFoR (#10118) @mhk197
  • Add SQL null semantics to list_contains (#10057) @robert3005
  • Blocked FoR with one reference per 1024-element chunk (#10105) @mhk197
  • Fold and/or constants on Arrays during .optimize() (#9997) @myrrc
  • feat(row): upstream vendored dtype and list key support (#10031) @gatesn
  • reduce is_null(array) to array's validity (#9981) @myrrc
  • Add vortex.is_nan expression with stats-based pruning (#9949) @Ecthlion
  • feat(cmake): forward linker selection to Cargo (#9976) @0ax1
  • feat(cuda): support column projection and dictionary decoding in file scans (#9934) @0ax1
  • duckdb: return projection_ids handling (#9887) @myrrc
  • Add BoolArray::trim_bits, wire it to Canonical::compact that prunes unused bytes in the underlying buffer (#9374) @robert3005
  • feat: C/C++ API shared library targets (#9878) @0ax1
  • fix: support decimal-to-integer array casts (#9873) @XiangpengHao
  • refactor(array): allocate execution outputs through context (#9671) @gatesn

🚀 Performance

  • Optimise Patches::filter to better handle sparse masks and sparse patches (#10149) @robert3005
  • perf(compressor): count narrow integer ranges without hashing (#10041) @robert3005
  • perf(compressor): run-aware integer stats loop (#10037) @a10y
  • Reduce lazy masks into arrays with all-valid metadata (#10016) @connortsui20
  • feat: reduce allocations in Spark Decimal access (#9842) @xiaoh1024
  • perf(array): pack Boolean output during RowFn dense retry (#9986) @connortsui20
  • perf: specialize comparison bitmap packing for 8-bit inputs (#9948) @mhk197
  • perf(array): reduce RowFn UTF-8 decode overhead (#9985) @connortsui20
  • perf(array): reuse probe state in RLE, RunEnd and PCO (#9844) @joseph-isaacs
  • Support creating accumulators with already derived dtypes (#9972) @robert3005
  • perf(cuda): pipeline local file reads through cacheable pinned buffers (#9936) @0ax1
  • move Buffer/BufferMut panic helpers into separate functions (#9927) @myrrc
  • Move panic case in vortex_expect/bail/ensure to a cold handler (#9903) @myrrc
  • Constant canonicalisation uses similar techniques to SparseArray (#9889) @robert3005
  • perf: specialize whole-array sums for run-end arrays (#9823) @connortsui20

🐛 Bug Fixes

37 changes * fix(datafusion): skip projection pushdown for projections with lambdas (#10215) @joseph-isaacs * Fix `FoR` `CastReduce` kernel (#10169) @mhk197 * fix(bench): write random-access Parquet with zstd level 3 (#10157) @joseph-isaacs * Reject get_field pushdown when its source cannot convert (#10083) @RainyPixel * fix(fsst, onpair): validate decoded lengths before allocation (#10110) @lorenzhs * Remove default-features from vortex -> vortex-file dependency (#10117) @robert3005 * Fix wasm32-unknown-unknown regression, add a test to cover it (#10108) @robert3005 * Canonicalize dictionary take results before downcasting (#10081) @RainyPixel * Gate compat fixture writes with editions (#10077) @mhk197 * Make benchmark ingestion conflict-free and validate before transactions (#10073) @connortsui20 * fix(python): treat a single-letter URL scheme as a filesystem path (#9957) @jackylee-ch * fix(row): compare fuzz list prefixes by length (#10033) @gatesn * fix(buffer): avoid shrinking allocations through grow (#10030) @connortsui20 * list_contains([], null) = false (#10028) @myrrc * fix(layout): reject a zone map whose zone count disagrees with the layout (#9974) @jackylee-ch * Preserve Boolean buffer handles during mask reduction (#10018) @connortsui20 * fix: alignment and padding of sliced CUDA Arrow bitmaps (#9926) @0ax1 * fix(datafusion): report an unconvertible column statistic as absent (#9973) @jackylee-ch * Remove DeltaScheme from default BtrBlocksCompressor (#9967) @robert3005 * fix(layout): reject a zone map whose zones overrun the layout row count (#9963) @jackylee-ch * Remove Delta compression hand-application from RLE and OnPair (#9964) @joseph-isaacs * fix: honor cmake `BUILD_SHARED_LIBS` (#9962) @0ax1 * fix(duckdb): report an error instead of asserting when a decimal precision exceeds 38 (#9961) @jackylee-ch * ci: bypass broken CodSpeed simulation instrument cache (#9959) @0ax1 * fix(python): build Decimal scalars from the unscaled integer and an exponent (#9885) @jackylee-ch * fix: honor the embedding project's CUDA toolchain (#9929) @0ax1 * Added support for REE scalars to scalar_from_df (#9931) @thorfour * fix: preserve device buffers when slicing decimal arrays (#9925) @0ax1 * duckdb: disable function serialization (#9891) @myrrc * Add TPC-DS SLT plan tests (#9861) @joseph-isaacs * fix(buffer): include the bit offset in BitBufferMut::from_buffer's bounds check (#9879) @jackylee-ch * ZSTDArray::append_to_builder falls back to canonical for non utf8/binary dtypes (#9897) @robert3005 * Replace MaybeUninit transmutes with write_copy_of_slice (#9814) @robert3005 * fix(array): convert f16 to signed integers instead of always failing (#9862) @jackylee-ch * Fix UB in reinterpreting 8-byte aligned memory range as alignment 1 (#9865) @myrrc * Resolve object-store URLs in the FFI via the cloud registry (#9558) @balicat * fix(python): match Python range semantics for empty and descending ranges (#9781) @jackylee-ch

📖 Documentation

5 changes * fix: update package metadata URLs (#10151) @jiengup * fix(docs): fix typo in file-format spec section. (#10125) @jiengup * docs: improve IPC documentation (#10036) @mprammer * docs: show decimal encoding evolution (#10007) @connortsui20 * docs: explain versioning guarantees and format evolution (#9947) @connortsui20

🧰 Maintenance

56 changes * Rename r#for and r#const modules to for_ and const_ (#10204) @joseph-isaacs * bench(mask): measure intersect_by_rank on rotating random masks (#10138) @mightsleep * Ban todo() and unimplemented() in codebase (#10153) @myrrc * Update dependency urllib3 to v2.8.0 [SECURITY] (#10158) @[renovate[bot]](https://github.com/apps/renovate) * Add `fastlanes.for_v2` serialization for blocked FoR (#10135) @mhk197 * Update CodSpeedHQ/action digest to 373d686 (#9850) @[renovate[bot]](https://github.com/apps/renovate) * Write benchmark Parquet data with zstd level 3 instead of Snappy (#10103) @joseph-isaacs * remove the `vortex-*` deps from xtask (#10115) @[vortex-claude[bot]](https://github.com/apps/vortex-claude) * Lock file maintenance (#9955) @[renovate[bot]](https://github.com/apps/renovate) * build: check in the FlatBuffers bindings and drop flatc from builds (#10112) @joseph-isaacs * perf(fastlanes): enable runtime dispatch for the bit transposes (#10102) @mightsleep * Refine `DecimalScheme` to the v2 wire format when the allowed serialized IDs permit it (#10076) @mhk197 * Setup llvm symbolizer and display fuzz stats in jobs (#10099) @robert3005 * Update anthropics/claude-code-action digest to 756cc22 (#10087) @[renovate[bot]](https://github.com/apps/renovate) * Update lance benchmark dependencies (major) (#10095) @[renovate[bot]](https://github.com/apps/renovate) * Update taiki-e/install-action digest to 4cef141 (#10091) @[renovate[bot]](https://github.com/apps/renovate) * Update codecov/codecov-action digest to 303a32d (#10089) @[renovate[bot]](https://github.com/apps/renovate) * Update cloudflare/wrangler-action digest to 953926a (#10088) @[renovate[bot]](https://github.com/apps/renovate) * Update rui314/setup-mold digest to 10ca16b (#10090) @[renovate[bot]](https://github.com/apps/renovate) * Remove redundant BtrBlocks tests (#10075) @connortsui20 * require deferred Boolean visitor implementations (#10011) @connortsui20 * bench: size the decimal kernel benchmarks by bytes rather than rows (#9980) @connortsui20 * Fix semantic merge conflit in is_nan pushdown (#9984) @robert3005 * Simplify StatsRewriteCtx rules by leveraging BoundExpressions (#9643) @robert3005 * Port Sparse sum to `SumV2` (#9622) @mhk197 * Authenticate Claude CI with workload identity (#9966) @robert3005 * List::slice doesn't require list revalidation (#9924) @robert3005 * Add missing runs-on action to all fuzzer workflows (#9921) @robert3005 * Add runs-on/action to fuzzer build setup (#9920) @robert3005 * Add benchmarks for round tripping aggregate partials (#9916) @robert3005 * Rebalance CodSpeed shards and build CPU benchmarks off metal (#9899) @robert3005 * Fix sqllogictest failure after recent duckdb changes (#9911) @robert3005 * Fix fuzzer build by using mold (#9909) @robert3005 * Develop correctly runs tests even if duckdb job is skipped (#9898) @robert3005 * bench(pco): scalar access baseline for CodSpeed (#9896) @joseph-isaacs * Streamline fuzzer workflow (#9749) @robert3005 * Parallelise and merge ci jobs, make sure rust dependencies are shared everywhere (#9752) @robert3005 * Update anthropics/claude-code-action digest to bf38e86 (#9848) @[renovate[bot]](https://github.com/apps/renovate) * Skip non-leaf conjunct pairs in find_between (#9764) @robert3005 * Update wasmerio/setup-wasmer digest to ba7631c (#9853) @[renovate[bot]](https://github.com/apps/renovate) * Update aws-actions/configure-aws-credentials digest to e125382 (#9849) @[renovate[bot]](https://github.com/apps/renovate) * Update lance benchmark dependencies (major) (#9855) @[renovate[bot]](https://github.com/apps/renovate) * Lock file maintenance (#9858) @[renovate[bot]](https://github.com/apps/renovate) * Update dtolnay/rust-toolchain digest to 6bed076 (#9851) @[renovate[bot]](https://github.com/apps/renovate) * Update actions/setup-java action to v6 (#9854) @[renovate[bot]](https://github.com/apps/renovate) * Update taiki-e/install-action digest to 3f74d7c (#9852) @[renovate[bot]](https://github.com/apps/renovate) * Update Rust crate toml to v1 (#9857) @[renovate[bot]](https://github.com/apps/renovate) * Fix lint in new benchmarks (#9882) @AdamGS * Lock file maintenance (#9859) @[renovate[bot]](https://github.com/apps/renovate) * Broaden the string-to-Arrow benchmarks (#9503) @robert3005 * Remove unnecessary slicing from RowFn execute_all_constant (#9874) @robert3005 * chore: cmake - expose shared debug info level (#9872) @0ax1 * Try to speed up python wheel validation (#9847) @robert3005 * chore: Set CMake C++ standard to 20 (#9846) @0ax1 * Delegate to datafusion's `FilePruner` to know if it has any work to do (#9841) @AdamGS * Move protobuf and flatbuffer definitions into their owning crates (#9550) @robert3005
Source: README.md, updated 2026-10-02