chore: merge upstream lancedb sync (0.32.0-beta.2) (#62) * feat(rust): support DataFusion Expr for table row deletions (#3415) Modified the parameter of delete to a Predicate that could be constructed from either datafusion Expr, from str (to support SQL predicate), or from String to support python and javascript bindings. When a datafusion Expr is used, it avoids the overhead of serializing to SQL and re-parsing when callers already have an Expr (e.g. from query planning). The native implementation uses lance's `DeleteBuilder::from_expr`. The remote implementation converts the Expr to SQL via `expr_to_sql_string` before sending to the server, consistent with the existing query and count_rows paths. Closes #3204 Signed-off-by: Yuval Lifshitz Co-authored-by: Claude Code * feat(remote): send read freshness headers for remote table consistency (#3439) Closes client side work of #3370 ### Summary - Plumbs `read_consistency_interval` from `ConnectBuilder` through `RestfulLanceDbClient` so remote reads attach an `x-lancedb-min-timestamp` freshness header. None = no header (default), zero = "now", positive = `now - interval`. - Adds per-table `FreshnessState` on `RemoteTable`: write responses (`update`, `delete`, `merge_insert`, `add_columns`, `alter_columns`, `drop_columns`) track the committed version, and the next read sends `x-lancedb-min-version` so the server's cache honors read-your-write. - `checkout(v)` / `checkout_tag(t)` / `checkout_latest()` / `restore()` reset the freshness state appropriately; the validating `/describe/` and tag-resolve requests are sent without freshness headers so they don't carry stale state. - Updates Rust, Python, and Node docstrings and calls out that stronger consistency raises per-read latency and cost. ### Testing - Unit tests cover default behavior, interval=0, positive interval, checkout_latest baseline, min_version-after-write, checkout clears state, and the two no-stale-header invariants on `checkout(v)` and `checkout_tag(t)`. - Ran smoke tests against local remote table to verify functionality * chore(deps): bump the rust-minor-patch group across 1 directory with 2 updates (#3440) Bumps the rust-minor-patch group with 2 updates in the / directory: [serde_json](https://github.com/serde-rs/json) and [aws-smithy-runtime](https://github.com/smithy-lang/smithy-rs). Updates `serde_json` from 1.0.149 to 1.0.150

Release notes

Sourced from serde_json's releases.

v1.0.150

Reject non-string enum object keys (#1324, thanks @puneetdixit200)

Commits

a1ae73a Release 1.0.150
1a360b0 Merge pull request #1324 from puneetdixit200/reject-non-string-enum-keys
2037b63 Reject non-string enum object keys
5d30df6 Resolve manual_assert_eq pedantic clippy lint
dc8003a Raise required compiler for preserve_order feature to 1.85
a42fa98 Unpin CI miri toolchain
684a60e Pin CI miri to nightly-2026-02-11
7c7da33 Raise required compiler to Rust 1.71
acf4850 Simplify Number::is_f64
6b8ceab Resolve unnecessary_map_or clippy lint
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Updates `aws-smithy-runtime` from 1.11.1 to 1.11.3

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Signed-off-by: dependabot[bot] Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> * fix(rerankers): inverted scores and incorrect missing-FTS penalty in LinearCombinationReranker (#3437) ## Problem `LinearCombinationReranker.merge_results` has two related bugs that make it return **inverted relevance rankings** — the least relevant document ranks first (closes #3154). ### Bug 1 — `_combine_score` subtracts from 1, inverting the final ranking ```python def _combine_score(self, vector_score, fts_score): return 1 - (self.weight * vector_score + (1 - self.weight) * fts_score) ``` Both `vector_score` (already converted via `_invert_score`) and `fts_score` (BM25 relevance) are in **higher-is-better** space. Wrapping the weighted average in `1 - (...)` flips the direction: a perfectly matching document (`vector_score=1, fts_score=1`) gets `_relevance_score = 0.0`, while a non-matching document gets a high score. ### Bug 2 — Documents missing an FTS score are rewarded, not penalised ```python fts_score = result.get("_score", fill) # fill=1.0 by default ``` When a document has no FTS match, `fts_score = fill = 1.0`. In `_combine_score` (with the bug-1 formula), this large value becomes a **negative penalty** via `1 - (... + 0.3 * 1.0)`, counterintuitively *boosting* the document's score. By contrast, missing vector results correctly receive `_invert_score(fill) = 0.0` (penalised). ## Fix **Bug 1** — remove the `1 -` inversion from `_combine_score`: ```python def _combine_score(self, vector_score, fts_score): return self.weight * vector_score + (1 - self.weight) * fts_score ``` **Bug 2** — use `1 - fill` for missing FTS scores so both penalties are symmetric (mirror of what `_invert_score(fill)` already does for missing vector scores): ```python fts_score = result.get("_score", 1 - fill) # was: fill ``` With `fill=1.0` (default): `1 - 1.0 = 0.0` — missing-FTS entries contribute `0` to the FTS term, identical to how missing-vector entries contribute `0` to the vector term. ## Verification Concrete example from the issue. With `weight=0.7`, `fill=1.0`: | Document | `_distance` | `_score` | Old `_relevance_score` | New `_relevance_score` | |----------|-------------|----------|------------------------|------------------------| | `apple orange` | 0.0 (best) | 2.41 (only FTS) | 0.30 (**wrong: ranked 2nd**) | 1.42 (**correct: ranked 1st**) | | `banana grape` | 0.9999 (worst) | — | 0.70 (**wrong: ranked 1st**) | 0.00 (**correct: ranked last**) | ## Tests Two regression tests added to `python/python/tests/test_rerankers.py`: - `test_linear_combination_best_match_ranks_first` — the document with the smallest distance **and** an FTS match must have the highest `_relevance_score`. - `test_linear_combination_missing_fts_is_penalised` — a document with any FTS score must beat an otherwise-equal document with no FTS match. --------- Co-authored-by: Will Jones * fix: remove primary key constraint from MemWAL bucket sharding (#3435) ## Summary - Bump lance dependency from `v7.0.0-beta.13` to `v7.0.0-rc.1` - Remove PK constraint from `LsmWriteSpec::Bucket` docs and `Table::set_lsm_write_spec` docs - Remove test assertions that expected rejection when no PK is set or when bucket column != PK Closes https://github.com/lance-format/lance/issues/6917 * fix: allow appending arrow.json data into lance.json tables (#3429) When a table is created with `pa.json_()` (PyArrow's JSON extension type), it is stored internally as `lance.json` (LargeBinary with `lance.json` extension metadata). Calling `table.add()` with `pa.json_()` data failed with: ``` RuntimeError: lance error: Append with different schema: `data` should have type json but type was large_binary ``` `build_field_exprs` in `rust/lancedb/src/table/datafusion/cast.rs` saw that the input field (`Utf8` with `arrow.json` metadata) differed from the table field (`LargeBinary` with `lance.json` metadata). Since `can_cast_types(Utf8, LargeBinary)` is true, it inserted a DataFusion `Utf8 → LargeBinary` cast. That cast preserved the input field's `arrow.json` extension metadata instead of adopting the table's `lance.json` metadata, so lance-core detected a schema mismatch and rejected the append. This adds a special case in `build_field_exprs`: when the input is `arrow.json` and the table field is `lance.json`, the expression is passed through unchanged. Lance-core's write path already handles the `arrow.json → lance.json` conversion (including JSONB encoding), so no DataFusion cast is needed. Fixes #3144 Continues #3291 from a fork (the original author's branch could not be pushed to). The original commits are preserved; an additional commit fixes the CI failures on that PR — formatting, a missing trait import, and read-back assertions that assumed binary storage when a lance.json column is read back as `Utf8`. 🤖 Generated with [Claude Code](https://claude.com/claude-code) --------- Co-authored-by: yunju.lly Co-authored-by: Claude Opus 4.7 (1M context) * chore: update lance dependency to v7.1.0-beta.4 (#3450) ## Summary - Updates Lance Rust workspace dependencies to `v7.1.0-beta.4` using `ci/set_lance_version.py`. - Updates the Java `lance-core` dependency property to `7.1.0-beta.4`. - Triggering Lance tag: https://github.com/lance-format/lance/releases/tag/v7.1.0-beta.4 ## Verification - `cargo clippy --workspace --tests --all-features -- -D warnings` - `cargo fmt --all` Co-authored-by: Daniel Rammer * ci: fix pypi publish on mac/windows/arm (#3449) The python-v0.32.0 publish run failed on every build matrix entry. Three independent issues: 1. **Mac and Windows**: `pypa/gh-action-pypi-publish` only runs on Linux, but was being called inline from each build job. 2. **Linux (all arches)**: `pypa/gh-action-pypi-publish` derives its docker image name from `github.action_repository`, which is empty when the action is invoked from inside a composite action (actions/runner#2473 — pypa's own `action.yml` references this bug). It falls back to `github.repository`, generating `docker://ghcr.io/lancedb/lancedb:`, which doesn't exist → `denied`. Only the ARM matrix entry surfaced this because it failed first and cancel-cascaded the rest. 3. **Windows**: `upload-artifact` in `build_windows_wheel` pointed at `python\target\wheels`, but maturin writes to the workspace-root `target/wheels`. The artifact was always empty. Also, `pypi-publish.yml` passed a `vcpkg_token` input that the composite doesn't declare. ## Changes - Build jobs (linux/mac/windows) now upload their wheels as `actions/upload-artifact` artifacts. - New Linux `publish` job downloads all wheel artifacts and runs the Fury or PyPA publish step directly (not via a composite), so `github.action_repository` resolves correctly. - Delete the unused `upload_wheel` composite action. - Drop the broken upload-artifact step inside `build_windows_wheel`. - Remove the bogus `vcpkg_token` input. - Fury upload now loops over all wheels instead of just the first. - Bump `actions/checkout`, `actions/upload-artifact`, `actions/download-artifact` to current major versions (Node 24) to clear deprecation warnings. - Bump Windows job timeout 60 → 90 minutes; previous run was cancel-timing-out on a 60m cap. - Use `rust-lld` as the Windows MSVC linker via `CARGO_TARGET_X86_64_PC_WINDOWS_MSVC_LINKER`. `link.exe` is single-threaded and the long pole on Windows builds. Fixes #3445 ## Test plan - [x] Open this PR — `paths` filter triggers a dry-run build on all three platforms. - [x] Verify all three builds produce wheels. - [x] Confirm the `pypa/gh-action-pypi-publish` container actually starts (the actions/runner#2473 bug) via the `publish-dry-run` job pointed at TestPyPI. - [x] **REMOVE BEFORE MERGE**: drop the `publish-dry-run` job and the now-redundant `actions/upload-artifact` runs on PRs (currently always-on so the dry-run has wheels to publish). - [ ] After merge, cherry-pick onto `python-v0.32.0` and force-push the tag to re-trigger the publish. * ci: drop manylinux2_17 wheel builds (#3455) manylinux2_17 reached EOL in 2024 and pyarrow stopped publishing 2_17 wheels long ago. We already build manylinux2_28 wheels, so drop the 2_17 matrix entries. Fixes #3452 Co-authored-by: Claude Opus 4.7 (1M context) * perf: migrate list_indices to use Lance's describe_indices (#3108) This needs https://github.com/lance-format/lance/pull/6099 to work. Closes #3140 --------- Co-authored-by: Claude Opus 4.8 (1M context) * feat(python): unify sync create_index API to match async API (#2882) ## Summary - Transitions `LanceTable` and `RemoteTable` to use the unified `create_index()` API matching `AsyncTable` - Deprecates `create_scalar_index()` and `create_fts_index()` with deprecation warnings - Adds detection logic to distinguish legacy vs new API calls - Adds `@overload` decorators for type checker compatibility - Adds `accelerator` parameter to IVF config classes for GPU support **New API:** ```python table.create_index("vec", config=IvfPq(distance_type="l2")) table.create_index("col", config=BTree()) table.create_index("text_col", config=FTS(with_position=True)) ``` **Legacy API (deprecated):** ```python table.create_index("l2", vector_column_name="vec") # emits DeprecationWarning table.create_scalar_index("col", index_type="BTREE") # deprecated table.create_fts_index("text_col") # deprecated ``` Fixes #2879 🤖 Generated with [Claude Code](https://claude.com/claude-code) --------- Co-authored-by: Claude Opus 4.5 * test(python): fix remote create_index schema fixture (#3462) The latest main Python workflow fails across multiple matrix jobs because `test_remote_create_index_new_api` opens a remote table whose mocked schema only exposes `id`, while the new `create_index(..., config=...)` path validates the requested indexed columns. This updates the remote-table fixture to include the indexed columns used by the smoke test and checks the emitted column payloads, keeping the test aligned with the schema-aware API path. * chore: upgrade Rust toolchain to 1.95.0 (#3390) Bumps the pinned toolchain in `rust-toolchain.toml` from 1.94.0 to 1.95.0. Fixes new lints surfaced by clippy on 1.95.0: - `manual_checked_ops` — fragment size mean in `table.rs` uses `checked_div` - `explicit_counter_loop` — shuffle test loop in `shuffle.rs` No rustc warnings were introduced. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-authored-by: Claude Opus 4.7 (1M context) * feat(table): route merge_insert through the MemWAL LSM write path (#3354) ## Summary When an `LsmWriteSpec` is installed on a table (#3396), `merge_insert` upsert calls are dispatched through Lance's MemWAL `ShardWriter` (LSM-style append) instead of the standard merge path. - **`use_lsm_write`** — a `merge_insert` builder option, default `true`; set it `false` to use the standard path for a call even when a spec is set. - **`assume_pre_sharded`** — a `merge_insert` builder option, default `false`; skips the per-row shard check and routes by the first row only. - **`close_lsm_writers`** — drains and closes the table's cached MemWAL shard writers. - The `merge_insert` **`on`** columns default to, and are validated against, the table's unenforced primary key. - Shard writers are cached alongside the dataset (in `DatasetConsistencyWrapper`) and reused for the session. - `MergeResult` gains **`num_rows`** — on the LSM path the insert/update breakdown is unknown until compaction, so only the total is reported. Routing covers all three sharding strategies — bucket (murmur3, Iceberg-compatible), identity, and unsharded. Each `merge_insert` call targets a single shard; the whole input is collected and validated before a single atomic `ShardWriter::put`, so a validation failure leaves the MemWAL untouched. Bindings: Python (`merge_insert(...).use_lsm_write(...)` / `.assume_pre_sharded(...)`, `Table.close_lsm_writers`) and TypeScript (`mergeInsert(...).useLsmWrite(...)` / `.assumePreSharded(...)`, `Table.closeLsmWriters`). ## Context Reconstructed from the original #3354 branch onto current `main`: the branch predated the #3394 (unenforced primary key) / #3396 (`LsmWriteSpec`) split and has been rebuilt on that merged foundation. Depends on Lance `v7.0.0-beta.13`. The MemWAL read path (reading un-flushed shard data back into queries) and remote (LanceDB Cloud) LSM support are follow-ups. --------- Co-authored-by: Jack Ye * chore: update Lance to v7.2.0-beta.1 (#3461) Update the Rust workspace Lance git dependencies and Java lance-core dependency to v7.2.0-beta.1. This keeps LanceDB aligned with the latest Lance beta release and refreshes the Cargo lockfile for the new Lance dependency graph. * chore(deps): bump the rust-minor-patch group with 5 updates (#3465) Bumps the rust-minor-patch group with 5 updates: | Package | From | To | | --- | --- | --- | | [log](https://github.com/rust-lang/log) | `0.4.29` | `0.4.30` | | [serde_json](https://github.com/serde-rs/json) | `1.0.149` | `1.0.150` | | [http](https://github.com/hyperium/http) | `1.4.0` | `1.4.1` | | [uuid](https://github.com/uuid-rs/uuid) | `1.23.1` | `1.23.2` | | [aws-smithy-runtime](https://github.com/smithy-lang/smithy-rs) | `1.11.1` | `1.11.3` | Updates `log` from 0.4.29 to 0.4.30

Release notes

Sourced from log's releases.

0.4.30

What's Changed

Support capturing of std::net types by @KodrAus in rust-lang/log#724

New Contributors

@V0ldek made their first contribution in rust-lang/log#720

@woodruffw made their first contribution in rust-lang/log#723

Full Changelog: https://github.com/rust-lang/log/compare/0.4.29...0.4.30

Notable Changes

MSRV is bumped to 1.71.0 in rust-lang/log#723

Changelog

Sourced from log's changelog.

[0.4.30] - 2026-05-21

What's Changed

Support capturing of std::net types by @KodrAus in rust-lang/log#724

New Contributors

@V0ldek made their first contribution in rust-lang/log#720

@woodruffw made their first contribution in rust-lang/log#723

Full Changelog: https://github.com/rust-lang/log/compare/0.4.29...0.4.30

Notable Changes

MSRV is bumped to 1.71.0 in rust-lang/log#723

Commits

9c55760 Merge pull request #725 from rust-lang/cargo/0.4.30
d1acb05 update docs on current MSRV and note latest bump in changelog
5068293 prepare for 0.4.30 release
7ccd873 Merge pull request #724 from rust-lang/feat/net-to-value
923dfaa fix up test cfgs
ecb7de8 gate net value impls on std
67bb4f6 run fmt
25f49fe rework net type capturing
7087dcb feat: impl ToValue for core::net types
67bc7e3 Merge pull request #723 from woodruffw-forks/ww/ci
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Updates `serde_json` from 1.0.149 to 1.0.150

Release notes

Sourced from serde_json's releases.

v1.0.150

Reject non-string enum object keys (#1324, thanks @puneetdixit200)

Commits

a1ae73a Release 1.0.150
1a360b0 Merge pull request #1324 from puneetdixit200/reject-non-string-enum-keys
2037b63 Reject non-string enum object keys
5d30df6 Resolve manual_assert_eq pedantic clippy lint
dc8003a Raise required compiler for preserve_order feature to 1.85
a42fa98 Unpin CI miri toolchain
684a60e Pin CI miri to nightly-2026-02-11
7c7da33 Raise required compiler to Rust 1.71
acf4850 Simplify Number::is_f64
6b8ceab Resolve unnecessary_map_or clippy lint
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Updates `http` from 1.4.0 to 1.4.1

Release notes

Sourced from http's releases.

v1.4.1

tl;dr

Fix PathAndQuery::from_static() and from_shared() to reject inputs that do not start with /.

Fix Extend for HeaderMap to clamp max size hint and not overflow.

Fix header::IntoIter that could use-after-free if the generic value type could panic on drop.

Fix header::{IterMut, ValuesIterMut} to not violate stacked borrows.

What's Changed

chore(header): fix clippy::assign_op_pattern by @rxc-amzn in hyperium/http#806

ci: pin itoa in msrv job by @seanmonstar in hyperium/http#813

Remove unnecessary explicit lifetimes by @jplatte in hyperium/http#815

chore(ci): update to actions/checkout@v6 by @tottoto in hyperium/http#819

tests: update to rand 0.10 by @tottoto in hyperium/http#818

refactor: Remove usage of float instruction by @AurelienFT in hyperium/http#823

refactor(uri): consolidate PathAndQuery::from_shared and from_static by @seanmonstar in hyperium/http#825

fix(uri): reject Path::from_shared/from_static if doesn't start with slash by @seanmonstar in hyperium/http#826

Rephrase comment by @daalfox in hyperium/http#827

Fix typo in request builder docs by @vleksis in hyperium/http#831

fix: clamp Extend size hint so HeaderMap reserve cannot overflow by @SAY-5 in hyperium/http#833

fix(headers): fix stacked borrows for IterMut/ValuesIterMut by @seanmonstar in hyperium/http#837

fix(header): use a set_len guard in IntoIter drop by @seanmonstar in hyperium/http#838

New Contributors

@rxc-amzn made their first contribution in hyperium/http#806

@AurelienFT made their first contribution in hyperium/http#823

@daalfox made their first contribution in hyperium/http#827

@vleksis made their first contribution in hyperium/http#831

@SAY-5 made their first contribution in hyperium/http#833

Full Changelog: https://github.com/hyperium/http/compare/v1.4.0...v1.4.1

Changelog

Sourced from http's changelog.

1.4.1 (May 25, 2026)

Fix PathAndQuery::from_static() and from_shared() to reject inputs that do not start with /.

Fix Extend for HeaderMap to clamp max size hint and not overflow.

Fix header::IntoIter that could use-after-free if the generic value type could panic on drop.

Fix header::{IterMut, ValuesIterMut} to not violate stacked borrows.

Commits

a24c968 v1.4.1
bc3b044 fix(header): use a set_len guard in IntoIter drop (#838)
1b968dc fix(header): fix stacked borrows for IterMut/ValuesIterMut (#837)
6e2dd42 fix: clamp Extend size hint so HeaderMap reserve cannot overflow (#833)
68e0abb docs: fix typo in request builder docs (#831)
29dd307 docs(extensions): rephrase internal comment (#827)
ae48fb5 fix(uri): reject Path::from_shared/from_static if doesn't start with slash (#...
1ad200e refactor(uri): consolidate PathAndQuery::from_shared and from_static (#825)
d59d939 refactor: Remove usage of float instruction (#823)
ed680c4 tests: update to rand 0.10 (#818)
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Updates `uuid` from 1.23.1 to 1.23.2

Release notes

Sourced from uuid's releases.

v1.23.2

What's Changed

Improve error messages for ambiguous formats by @KodrAus in uuid-rs/uuid#882

Prepare for 1.23.2 release by @KodrAus in uuid-rs/uuid#883

Full Changelog: https://github.com/uuid-rs/uuid/compare/v1.23.1...v1.23.2

Commits

d119657 Merge pull request #883 from uuid-rs/cargo/v1.23.2
0651cfc prepare for 1.23.2 release
e8dea0c Merge pull request #882 from uuid-rs/fix/error-msgs
bdc429a fix up serde messages
d4342e4 make indexes 0 based and fix up more error messages
4ad479f work on more accurate parser errors
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Updates `aws-smithy-runtime` from 1.11.1 to 1.11.3

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Signed-off-by: dependabot[bot] Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> * chore: bump lance to 7.2.0-beta.3 (#3471) This updates the workspace Lance dependencies from `v7.1.0-beta.4` to `v7.2.0-beta.3` and refreshes `Cargo.lock`. The lockfile now points at Lance commit `7c070f760fa8e24c8015cb2afbd22c5e6b7898e8` and includes the transitive dependency updates required by the new beta. * Bump version: 0.33.0-beta.1 → 0.33.1-beta.0 * Bump version: 0.30.0-beta.1 → 0.30.1-beta.0 * feat(python): support remote tables in PyTorch dataloaders (#3432) This PR makes remote LanceDB tables usable from PyTorch multiprocessing workers. Remote tables now carry enough safe JSON connection state to reopen themselves after pickle/spawn or fork, and permutations lazily rebuild their reader from restored tables instead of trying to reuse process-local handles. This addresses the remote-table gap in the PyTorch dataset path while preserving the explicit connection factory escape hatch for custom worker-side credential loading or non-serializable header providers. Validated with targeted remote table, permutation, and PyTorch DataLoader tests. * ci: move Lance dependency bump flow into skill (#3475) Moves the Lance dependency bump process into an in-repository skill so local agents and GitHub Actions share the same workflow definition. The update workflow is now an explicit, optional-tag entrypoint; latest-release resolution, duplicate PR handling, Java/Rust dependency updates, and Sophon follow-up are documented in the skill and backed by a small deterministic helper. * feat: add update_field_metadata to edit per-field metadata (#3482) ### Summary Adds update_field_metadata to the client SDK (Rust core, Python, and TypeScript) so clients can edit per-field (column) Arrow metadata (schema.fields[].metadata) ### Testing - added unit tests - ran E2E against a local server on both local and remote tables (set → merge → delete), across Python sync/async and TypeScript ### Next steps - deprecate replace_field_metadata in the python lancedb favor of this (typescript didn't have replace_field_metadata method). This matches Lance's API direction (Lance already deprecated replace_field_metadata for update_field_metadata) * feat: deprecate replace_field_metadata for update_field_metadata (#3484) ### Summary Deprecates the Python replace_field_metadata (on Table and AsyncTable) in favor of update_field_metadata. Mirrors Lance, which already deprecated Dataset.replace_field_metadata for update_field_metadata. Stacked on top of #3482 as this was a follow-up task after adding update_field_metadata * feat(python): support blob modes in query to_pandas (#3487) ## Feature - What is the new feature? - Adds `blob_mode` support to sync and async Python query `to_pandas()` APIs. - Enables plain scan queries to return blob columns as lazy `BlobFile` objects, raw bytes, or blob descriptions. - Lets namespace-backed local tables use Lance native blob-aware pandas conversion for lazy blobs. - Why do we need this feature? - Table and Lance dataset/scanner APIs already support blob-aware pandas conversion, but LanceDB query builders did not expose that capability. - Geneva and other callers should be able to use query-level `to_pandas(blob_mode=...)` without manually constructing Lance scanners. - How does it work? - Plain scan queries route through Lance scanner native `to_pandas(blob_mode=...)`, preserving filter, projection, limit, offset, row id, and alias/expression projection behavior. - Non-native query shapes keep existing Arrow fallback semantics and raise a clear error when they return blob columns with `blob_mode="lazy"` or `blob_mode="bytes"`. - Focused tests cover table/query blob modes, filter/select/limit/offset/alias query cases, async query behavior, vector-query error boundaries, and namespace-backed lazy blobs. ## Validation - `cd python && .venv/bin/maturin develop --uv --extras tests,dev --profile dev` - `cd python && uv run --frozen --no-sync pytest python/tests/test_table.py::test_table_to_pandas_blob_modes python/tests/test_table.py::test_async_table_to_pandas_blob_bytes python/tests/test_query.py::test_plain_scan_query_to_pandas_blob_modes python/tests/test_query.py::test_plain_scan_query_to_pandas_blob_projection python/tests/test_query.py::test_async_plain_scan_query_to_pandas_blob_projection python/tests/test_query.py::test_vector_query_to_pandas_blob_mode_requires_native_path python/tests/test_namespace.py::TestNamespaceConnection::test_table_to_pandas_blob_lazy_through_namespace -q` - `cd python && uv run --frozen --no-sync ruff format --check .` - `cd python && uv run --frozen --no-sync ruff check .` - `git diff --check` * Bump version: 0.33.1-beta.0 → 0.33.1-beta.1 * Bump version: 0.30.1-beta.0 → 0.30.1-beta.1 * fix(rerankers/mrr): raise ValueError on empty vector_results list (#3469) ## What's broken `MRRReranker.rerank_multivector([])` raises `IndexError: list index out of range`. The crash happens on line 128 (the `all()` type-homogeneity check passes vacuously on an empty iterable) and on line 134 which accesses `vector_results[0]` unconditionally, with no prior guard for an empty list. ## Why it happens `all()` over an empty iterable returns `True`, so the type check silently passes and execution falls through to `vector_results[0]` which crashes. ## Fix Added a two-line guard at the top of `rerank_multivector` that raises a clear `ValueError("vector_results must not be empty")` before any indexing occurs. ## Test Added `test_mrr_reranker_empty_input` in `test_rerankers.py` which calls `rerank_multivector([])` and asserts that a `ValueError` with the message "must not be empty" is raised. Fixes #3468 Co-authored-by: Aegis Dev * fix(rerankers): guard against empty vector_results in RRFReranker.rerank_multivector (#3467) ## What's broken Calling `RRFReranker().rerank_multivector([])` crashes with `IndexError: list index out of range` because the method accesses `vector_results[0]` for the type-homogeneity check before verifying the list is non-empty. The `all()` call passes vacuously on an empty iterable so the crash hits the next lines. ```python from lancedb.rerankers import RRFReranker RRFReranker().rerank_multivector([]) # IndexError: list index out of range ``` ## Why it happens The type check uses `vector_results[0]` as the reference type but never guards against an empty list. `all(...)` short-circuits to `True` when the iterable is empty, so the bad index access on the lines that follow is never reached by the existing guard logic. ## Fix Add an explicit empty-list check before any indexing. * docs: add cross-SDK parity guidance for code review (#3464) Adds a REVIEW.md at the repo root with cross-SDK parity guidance for automated code review. The Claude Code review feature automatically loads `REVIEW.md` as review-only context. This is intentionally a semantic nudge, not a deterministic check, it relies on the reviewer reading the sibling SDK, so it will catch most gaps. * test(python): add regression test for nullable struct with None (#2654) (#3483) ## Summary Regression test for [issue #2654](https://github.com/lancedb/lancedb/issues/2654) — a nullable struct column whose first batch contains only `None` values crashed in `_align_field_types` with `AttributeError: 'pyarrow.lib.DataType' object has no attribute 'fields'`. The actual fix landed in #3394, but no test was added. This PR adds the reproducer from the issue as a test. ## Test plan - `test_add_nullable_struct_with_none`: creates a table with a nullable struct column, adds a row with a non-null struct value, then a row with `None` for the struct field. Verifies both rows land correctly. - Uses Lance file format v2.1 (`new_table_data_storage_version="2.1"`) because nullable structs aren't supported on v2.0. ## Related - #3028 (the original fix attempt, now superseded) * ci: update python lockfile weekly (#3498) Make sure we are getting security fixes in there regularly, and other useful bumps. * feat(rust): support datafusion expressions for merge insert predicates (#3444) ### Description This PR exposes native DataFusion expression support in the Rust SDK's `MergeInsertBuilder` via two new builder methods: `when_matched_update_all_expr` and `when_not_matched_by_source_delete_expr`. For remote LanceDB tables (where operations are serialized over HTTP/JSON to the SaaS backend), native DataFusion expression trees cannot be executed directly. The SDK handles this gracefully by returning a `NotSupported` error. ### Key Changes - **`MergeFilter` Enum**: Introduced a helper enum to store either a SQL string or a native `datafusion_expr::Expr`. - **`MergeInsertBuilder`**: Updated `when_matched_update_all_filt` and `when_not_matched_by_source_delete_filt` fields to store the new enum, and added `when_matched_update_all_expr` and `when_not_matched_by_source_delete_expr` builder methods. - **Execution & Remote Dispatch**: Dispatched the filter variants during local execution, and rejected expression filters with a clean `NotSupported` error in remote table request conversion. - **Testing**: Added a `test_merge_insert_expr` unit test covering conditional updates and deletes with programmatically built DataFusion expressions. ### Verification - Added integration test `test_merge_insert_expr` which successfully compiles and passes. - Formatted and linted the code. Closes #3416 * fix(python): route blob query pandas through scanner (#3491) ## Bug Fix ### What is the bug? `QueryBuilder.to_pandas(blob_mode="descriptions")` could still fall back to `self.to_arrow()` for query outputs with blob columns. Custom query subclasses or wrappers can have `to_arrow()` behavior that is not compatible with pandas blob-description conversion, which can surface as low-level Arrow/list-batch conversion failures. ### What issues or incorrect behavior does the bug cause? Callers need to carry local `to_pandas` or plain-scan adapter special casing for blob descriptions, and scanner-only kwargs such as row addresses and fragment selection are not represented in LanceDB query state. ### How does this PR fix the problem? This PR routes blob-output query `to_pandas()` through the Lance scanner path for `lazy`, `bytes`, and `descriptions` modes when the query is a scanner-backed plain scan. For `blob_mode="descriptions"` with `flatten`, it collects scanner Arrow/table output, applies LanceDB `flatten_columns`, and converts to pandas from there. Non-plain blob query shapes now fail with a clear unsupported error instead of falling into subclass `to_arrow()` behavior. It also adds Python query state and builder methods for scanner-only plain-scan parameters: - `with_row_address()` for `_rowaddr` - `with_fragments(...)` for Lance fragment objects - `fragment_ids([...])` as a convenience wrapper that resolves IDs to Lance fragments ## Validation - `cd python && uv run --no-sync ruff format --check python/lancedb/query.py python/tests/test_query.py` - `cd python && uv run --no-sync ruff check python/lancedb/query.py python/tests/test_query.py` Targeted pytest was intentionally not run locally per maintainer request. * Bump version: 0.33.1-beta.1 → 0.33.1-beta.2 * Bump version: 0.30.1-beta.1 → 0.30.1-beta.2 * chore(deps): bump the rust-minor-patch group with 3 updates (#3499) Bumps the rust-minor-patch group with 3 updates: [log](https://github.com/rust-lang/log), [test-log](https://github.com/d-e-s-o/test-log) and [serial_test](https://github.com/palfrey/serial_test). Updates `log` from 0.4.30 to 0.4.31

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0.4.31

What's Changed

fix typos in kv compile errors and log documentation by @Isvane in rust-lang/log#726

Leverage static str key when possible by @tisonkun in rust-lang/log#727

Prepare for 0.4.31 release by @KodrAus in rust-lang/log#728

New Contributors

@Isvane made their first contribution in rust-lang/log#726

Full Changelog: https://github.com/rust-lang/log/compare/0.4.30...0.4.31

Changelog

Sourced from log's changelog.

[0.4.31] - 2026-06-02

What's Changed

Leverage static str key when possible by @tisonkun in rust-lang/log#727

New Contributors

@Isvane made their first contribution in rust-lang/log#726

Full Changelog: https://github.com/rust-lang/log/compare/0.4.30...0.4.31

[Unreleased]

Commits

5808392 Merge pull request #728 from rust-lang/cargo/0.4.31
86d739f prepare for 0.4.31 release
c906cfb Merge pull request #727 from tisonkun/leverage-static-str-key-when-possible
756c279 leverage str literal as well
3dd250d rename Key::from_static_str to from_str_static
db14597 Leverage static str key when possible
761461a Merge pull request #726 from Isvane/fix/typos
48ce372 fix typos in kv compile errors and log documentation
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Updates `test-log` from 0.2.20 to 0.2.21

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v0.2.21

Fixed spans in generated code, improving rust-analyzer interaction

New Contributors

@jorendorff made their first contribution in d-e-s-o/test-log#68

Full Changelog: https://github.com/d-e-s-o/test-log/compare/v0.2.20...v0.2.21

Changelog

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0.2.21

Fixed spans in generated code, improving rust-analyzer interaction

Commits

b7b9da0 Bump version to 0.2.21
db522dc Add CHANGELOG entry for #68
5e996d9 Wrap the injected init code, not the original test body
c78563c Retain existing spans for test code
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Updates `serial_test` from 3.4.0 to 3.5.0

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v3.5.0

What's Changed

Replace scc/sdd with std::sync::Mutex for Miri strict provenance compatibility by @justanotheranonymoususer in palfrey/serial_test#157

New Contributors

@justanotheranonymoususer made their first contribution in palfrey/serial_test#157

Full Changelog: https://github.com/palfrey/serial_test/compare/v3.4.0...v3.5.0

Commits

6181f64 3.5.0
480bead Merge pull request #157 from justanotheranonymoususer/remove-scc-dep
e03019e Update ci.yml
820c0f3 Update ci.yml
62a89b0 Only skip file_lock with filesystem access
5ff5501 Update ci.yml
0bd996d Let's try --all-features
338e4ed Fix formatting
a55cde5 Cleanup code_lock.rs
9ad7a8f Remove unnecessary test leftover changes
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Signed-off-by: dependabot[bot] Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> * fix(python): make LanceDBClientError pickleable (#3470) ## Summary - Add `__reduce__` methods to `LanceDBClientError` and `RetryError` so that instances can be pickled and unpickled correctly - `HttpError` inherits the fix from `LanceDBClientError` since it has no additional `__init__` parameters - Add tests verifying pickle roundtrip for all three exception classes Fixes #3447 ## Test plan - [x] Verified pickle roundtrip for `LanceDBClientError` with and without `status_code` - [x] Verified pickle roundtrip for `HttpError` (subclass, no extra init params) - [x] Verified pickle roundtrip for `RetryError` (subclass with many extra params) - [ ] CI tests pass 🤖 Generated with [Claude Code](https://claude.com/claude-code) --------- Co-authored-by: Claude Opus 4.6 Co-authored-by: Will Jones * chore: update lance dependency to v8.0.0-beta.2 (#3500) Updates Lance dependencies to v8.0.0-beta.2 across the Rust workspace and Java lance-core metadata. The update was generated with ci/update_lance_dependency.py and required no compatibility code changes. Lance tag: https://github.com/lance-format/lance/releases/tag/v8.0.0-beta.2 ## ⛔ Merge blocker: legal review required This bump pulls in a new transitive **dev/profiling** dependency chain `inferno v0.11.21` → `pprof v0.15.0` → `lance-testing`, and `inferno` is licensed **CDDL-1.0** (copyleft). To get `cargo-deny` green, `CDDL-1.0` was added to the `deny.toml` allow list. **Do not merge until legal has reviewed and signed off on allowing CDDL-1.0.** The dependency is dev/test-only and not distributed, but the allow-list addition still requires legal approval per our policy. --------- Co-authored-by: Daniel Rammer Co-authored-by: Claude Opus 4.8 (1M context) * feat(remote): implement set/unset_lsm_write_spec REST variant (#3501) ## Summary Wires `RemoteTable::set_lsm_write_spec` / `unset_lsm_write_spec` to the sophon REST endpoints added in [lancedb/sophon#6181](https://github.com/lancedb/sophon/pull/6181), replacing the previous `NotSupported` stubs. - `set_lsm_write_spec` maps the `LsmWriteSpec` onto sophon's request DTO — mode-tagged `sharding` (`unsharded` / `bucket` / `identity`), `maintained_indexes`, and `writer_config_defaults` — and POSTs to `/v1/table/{name}/set_lsm_write_spec/`. - `unset_lsm_write_spec` POSTs to `/v1/table/{name}/unset_lsm_write_spec/`. - Both call `check_mutable` first, matching the other remote mutations. - `maintained_indexes` is sent verbatim (an empty list means "no maintained indexes", matching native semantics). ## Testing - Added mocked-endpoint unit tests for unsharded / bucket / identity set and for unset. - `cargo check --features remote --tests` passes. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-authored-by: Claude Opus 4.8 (1M context) * fix(python): run AsyncTable.search embeddings on a dedicated executor (#3459) ## Summary `AsyncTable.search()` computes the query embedding with `loop.run_in_executor(None, ...)`, which uses asyncio's **default** `ThreadPoolExecutor`. That pool is shared with all other `run_in_executor(None, ...)` work, so a slow embedding call — a heavy local model or an HTTP request to an embeddings API — ties up those threads and starves unrelated async I/O under concurrent load. This moves the (potentially blocking) embedding call onto a **dedicated executor**, isolating it from the default pool. Closes #3310. ## Problem `python/lancedb/table.py`, `AsyncTable.search()`: ```python return ( await loop.run_in_executor( None, # asyncio's default executor, shared with other blocking I/O embedding.function.compute_query_embeddings_with_retry, query, ) )[0] ``` Under load, concurrent searches whose embeddings block (or any other code using the default executor) contend for the same small thread pool. ## Change - Add a dedicated `ThreadPoolExecutor(thread_name_prefix="lancedb-embedding")` in `background_loop.py`, exposed via `embedding_executor()`. - Use it in `AsyncTable.search()`'s `make_embedding` instead of the default executor. - Reset the executor in the existing `_reset_after_fork` hook — its worker threads don't survive `fork()`, same as the background even…

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Move list_indcies to use Lance's describe indices #3140

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