Lance supports `search_effort`, but LanceDB cannot pass it through its
query APIs. Expose the parameter in Rust, Python sync/async and
TypeScript, including remote requests and hybrid query conversion, using
the [Lance
v14.0.0-beta.13](https://github.com/lance-format/lance/releases/tag/v14.0.0-beta.13)
dependency already on main.
The default is `None` (Auto, internally 0.5). Any explicit effort,
including 0.5, overrides fixed `nprobes` in either setter order;
explicit minimum/maximum bounds remain effective. Invalid values are
rejected in the Rust core. Hybrid conversion now retains the vector
probe parameters and handles an inferred FTS column without panicking.
Namespace queries with explicit effort execute locally because the
namespace wire model cannot carry it. MemWAL LSM queries reject it
explicitly because Lance's LSM scanner does not yet expose this option.
Maturin is included in the dev extra so the documented build command
works in the project environment.
BREAKING CHANGE: The public Rust `VectorQueryRequest` struct now
includes `search_effort: Option<f64>`. Downstream code that initializes
every field explicitly must add `search_effort: None` or use
`..Default::default()`. Exhaustive destructuring patterns must include
the new field or `..`. Query-builder calls and struct literals that
already use `..Default::default()` require no source changes. The new
effort setters in Python and TypeScript are additive. This PR does not
change the persisted file format.
Using explicit effort with remote tables requires server support for
`search_effort` and its precedence over `nprobes`; the client wire tests
do not establish that a deployed server supports it. Server-side support
is tracked in lancedb/sophon#8607.
Validation on AWS after merging current main (Lance beta.13 / SDK
beta.5):
- 14 Rust regressions and the API doctest pass.
- 60 parameter regressions, the full 47-test namespace suite, and three
API doctests pass. The parameter selection includes some namespace
cases.
- 40 TypeScript query tests and 54 remote tests pass; build, lint and
generated docs pass.
- Rust Clippy, Python package lint/format, Pyright and lockfile checks
pass. Repository-wide Ruff reports 49 lint errors and 11 formatting
failures in unchanged `docs/web-tests` files; those files are
byte-identical to main and outside this change.
All 1,103 Git-tracked files match the AWS validation checkout. No
benchmark scripts or result artifacts are included, and no performance
improvement is claimed.
Uses lance-format/lance#9798. Server-side support is in
lancedb/sophon#8607.
## Summary
Fixes the Dependabot alerts for Rust crates that have a patched release.
- `Cargo.lock`: aws-smithy-json 0.62.5 → 0.62.7, quinn-proto 0.11.14 →
0.11.19, xxhash-rust 0.8.15 → 0.8.19.
- `docs/web-tests/rs/Cargo.lock`: rustls 0.23.35 → 0.23.45,
rustls-webpki 0.103.13 → 0.103.15, serde_with 3.16.1 → 3.22.0, rand
0.8.5 → 0.8.8 and 0.9.2 → 0.9.5, xxhash-rust 0.8.15 → 0.8.19.
- `rust/lancedb/Cargo.toml`: the AWS SDK crates' default features
include the legacy `rustls` feature, which pulls in rustls 0.21 and the
vulnerable rustls-webpki 0.101.7 via hyper 0.14.
`aws-sdk-bedrockruntime` (behind the optional `bedrock` feature) and the
`aws-sdk-s3`/`dynamodb`/`kms` dev-dependencies now use `default-features
= false` with `default-https-client` + `rt-tokio`, the same rustls 0.23
client `aws-config` already uses. Minimum versions are raised to the
first releases that have `default-https-client`. This removes rustls
0.21, rustls-webpki 0.101, hyper 0.14 and h2 0.3 from the lockfile.
Not fixed: fast-float 0.2.0 has no patched release. It comes from
polars-arrow via the optional `polars` feature, pinned to `<0.40`;
removing it needs a polars upgrade.
## Merge Risk
**Door:** two-way; lockfile and dependency-feature changes only.
**Blast Radius:** `bedrock` embedding function's HTTP client, and
S3/DynamoDB/KMS integration tests.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Keep IVF probe fields unset by default so Lance supplies adaptive
behavior. Preserve `nprobes`, `minimum_nprobes`, and `maximum_nprobes`
independently through Rust, Python, namespace, and remote request
construction, with compatibility fields serialized only when explicitly
configured.
The final Rust namespace and LSM propagation update depends on the Lance
release containing lance-format/lance#9184.
TypeScript rejected `Index.fts({ baseTokenizer: "code" })` because the
public `BaseTokenizer` union omitted `"code"`, although the native
tokenizer already supports it.
Add `"code"` to the shared union, document its identifier behavior, and
regenerate the API reference. The regression test creates and searches a
code-tokenized FTS index with a typed configuration across Arrow
versions 15–18.
Validation:
- The regression failed before the fix with TS2322: `"code"` was not
assignable to `BaseTokenizer`.
- After the fix, all four cases pass: `pnpm test __test__/table.test.ts
--runInBand -t 'full text search code tokenizer' --verbose=false`.
- `pnpm build`, `pnpm lint`, `pnpm run docs`, and formatting of the
changed TypeScript files pass.
Fixes#4366
<!-- lance-gatekeeper-fix:v1 agent=8c37ac529cec8862bd5dbc218c5aaa8d
generation=1 -->
Co-authored-by: Gatefixer <313497061+lancedb-gatefixer[bot]@users.noreply.github.com>
Fixes#4379
Remote `table_names` discarded the continuation token after the first
root-listing request, silently returning the server's default page of 10
names. Remote `list_tables` also inherited that server default, while
local listings had no SDK page limit. Python's synchronous and namespace
wrappers still imposed a default limit of 10 names. The namespace
adapter also discarded continuation tokens, so an unlimited REST
namespace listing could stop at the server's page cap.
Follow server-provided root listing tokens until the requested name
limit or the end of the listing, preserving `start_after`, cache
population, and guards against empty or repeated tokens. The namespace
adapter collects every server page, then sorts names and applies the
name cursor and total limit: namespace tokens are opaque, and page order
need not be name order. Empty tokens end the listing; token cycles
return an error. Python sync and namespace `table_names` wrappers now
default to `None`, matching the asynchronous and TypeScript APIs.
Namespace overrides accept the base connection's optional limit,
avoiding import-time signature errors on Python 3.10 and 3.11. Set the
`list_tables` default to 100 at the shared connection boundary,
including namespaces, and return empty results for a zero limit without
sending an invalid server request. Update the SDK documentation to
describe these defaults.
`list_tables()` is now a paginated call in both modes: callers with more
than 100 tables must follow the returned token or supply an explicit
larger limit. `table_names()` without a limit returns every name.
Namespace table-name calls enumerate the namespace before applying name
cursors and limits; use `list_tables()` for paginated access.
Validation:
- Regression cases reproduce the original root-listing truncation and
cover 130 tables, opaque tokens, short pages, explicit limits,
`start_after`, and zero limits.
- Relevant Rust remote database, connection, and local listing test
groups: 175 passed. Namespace adapter tests: 23 passed, including opaque
tokens, unordered and empty pages, name cursors, limits, zero requests,
and token cycles.
- Rebuilt the Python extension; namespace and local/mocked remote
listing tests using `uv.lock`: 46 passed on Python 3.10 and 46 passed on
Python 3.13.
- REST namespace regressions reproduced the truncation before the fix
and now return all 12 names from a server capped at 10 per response, for
sync/async connections at root and child paths. They also cover
unordered pages, name cursors, explicit limits, and zero requests. The
exact Python 3.10 import error also reproduced before the
optional-signature fix.
- TypeScript connection test file: 38 passed; `pnpm build`, `pnpm lint`,
and `pnpm run docs` passed.
- `cargo check --quiet --features remote --tests --examples` and `cargo
clippy --quiet --features remote --tests --examples` passed.
- Rust formatting, Python Ruff formatting/lint, and diff whitespace
checks passed.
<!-- lance-gatekeeper-fix:v1 agent=43f92f1f05ac9ca74229af590945cb88
generation=1 -->
---------
Co-authored-by: Gatefixer <313497061+lancedb-gatefixer[bot]@users.noreply.github.com>
`execute_query` / `execute_query_async` can now bind values to `$1` /
`$name` placeholders instead of splicing them into the SQL text. The
values travel as Arrow, so a float32 keeps its exact bits and type and a
vector stays a compact `FixedSizeList` (3 KB for 768 dims rather than ~9
KB of decimal literals parsed back as Float64).
```rust
db.execute_query_async("SELECT id FROM docs ORDER BY distance(vector, $vector) LIMIT $k")
.parameters(batch) // one-row RecordBatch
.execute()
.await?;
```
```python
db.execute_query(sql, parameters={"vector": np.float32_vector, "k": 10})
```
- A statement with parameters is sent on one `DoExchange`: the first
message carries the `CommandStatementQuery` descriptor and the parameter
schema, the second the one-row batch, and the result rows stream back on
the same call. Statements without parameters keep `PollFlightInfo` +
`DoGet` unchanged.
- Column `i` binds `$<i+1>`; a column whose name is not a number also
binds `$<name>`. Python accepts a list (positional), a dict (named), or
a one-row `RecordBatch` / `Table`; 1-D numpy / pyarrow arrays become a
`FixedSizeList` of their element type.
- A parameterized query runs on its call: `cancel()`, dropping the
handle before reading, or dropping the reader ends the call and stops
the server-side statement. It is still registered for `describe_query`.
- `Database::execute_query_async` now takes an `ExecuteQueryRequest`
options struct.
Server side: lancedb/sophon#8256.
Remove scaffold that accidentally caused the post-merge Rust
license-header check to fail. Include `docs/web-tests/**` in the PR
workflow paths so future docs test changes run the license checks before
merge.
Validation: `cargo fmt --all`; `git diff --check`;
license-header-checker v1.5.0 using all four workflow commands on a
clean checkout; Cargo metadata confirms all six Rust example targets
remain unchanged.
Move the public website pages into `docs/web` beside the SDK, with
shared navigation and executable example sources in `docs/web-tests`.
The combined website is assembled by
[lancedb/docs#355](https://github.com/lancedb/docs/pull/355), with six
Enterprise replacements from
[lancedb/sophon#7681](https://github.com/lancedb/sophon/pull/7681).
This includes Function guidance, runnable Quickstarts, regenerated
snippets, production contact/demo fixes, the legacy SQL route, and the
LeRobot redirect. LeRobot remains attributed to Geneva; all 34 Geneva
pages remain in the docs repository until Function officially launches.
Materialized-view guidance follows the full rebuild refresh introduced
by #4373: local refresh writes the complete result, has no `full`
argument, supports `source_version`, and no longer requires stable row
IDs. Deployment SQL refresh options and stable-ID setup are qualified by
version/configuration. Function input guidance distinguishes ordinary
stored columns from computed inputs supported by newer deployments.
**Validation:** independently accepted local checks include 95 Python
tests (real Enterprise excluded), eight TypeScript tests, Rust
Quickstart, snippet parity, typos, deterministic assembly, Mint
validation and links/anchors/redirects. The combined baseline retains
all 181 production routes and 17 legacy redirects. Examples ran locally
against source-built Python SDK 0.40.0b13; existing GitHub workflows do
not run `docs/web-tests`. New main at `069b2f7d` is 0.41.0b0 and adds
computed Function inputs; that SDK was not exercised by the accepted
tests. Latest prose corrections receive focused site validation.
**Merge/rollout:** merge this and #7681 before #355's combined CI, which
reads producer `main`. This is migration infrastructure: section
overlays, source-owned skills and automatic versioned paired releases
remain follow-ups. The current manual publisher is transitional. Hosted
validation, a supported SDK/Enterprise release pair and a real
Enterprise walkthrough remain pending.
Production Mintlify watches `lancedb/docs:deploy-freeze`, directory
`docs`; preserve that source through review. The separate SDK GitHub
Pages reference workflow rebuilds on main merges.
**Updated-head CI (9a50f8db):**
[Typos](https://github.com/lancedb/lancedb/actions/runs/37654185443/job/112904990558),
[PR
title](https://github.com/lancedb/lancedb/actions/runs/37654179507/job/112904974595)
and
[Aikido](https://app.aikido.dev/featurebranch/scan/215386145?groupId=74229)
pass. Critical findings in the example lockfiles were patched: all Sharp
copies use 0.35.5, protobufjs 7.6.6, tar 7.5.22, quinn-proto 0.11.19,
zerovec 0.11.8 and zerovec-derive 0.11.6. The SDK's product dependencies
are unchanged. The revised lockfiles pass eight TypeScript examples,
HuggingFace decode/resize/crop/rescale/normalize plus AVIF roundtrip,
and Rust Quickstart. Aikido passing does not mean every advisory is
cleared; npm still reports 29 high and five moderate advisories in the
example dependency graph. No scanner bypass or suppression was added.
The Function prose correction passes combined/standalone Mint,
deterministic assembly, routes and assets. The revised 325-file site
checksum is
`175bec06864abb400dd292e667ba93448c0479b8359fd7bf6146afabf9040647`. This
PR remains open for independent review; further merges are on hold.
---------
Co-authored-by: Brendan Clement <brendan.clement@lancedb.com>
add to table stats the number of rows that has
been marked for deletion, but not yet deleted.
note that when a table fragment is removed due to
deletion of all of its rows, these rows are not counted. since the main
use of this feature is to determine when table compaction is needed, the
fact that these rows are not reported should not impact that decision
(deleted table fragments don't need compaction).
Fixes: https://github.com/lancedb/lancedb/issues/3761
Co-authored-by: Claude Opus 5.0 <noreply@anthropic.com>
`maintained_indexes` on a MemWAL table has three values: a named list,
`[]` for none, and `null` for every index the table has, including ones
created later. This PR makes every client read all three back as they
were set.
- **Rust remote client** (also used by the Python and Node SDKs) reads
`null` as `None`.
- **Java client** reads `null` as `null`, not as an empty list.
- **Docs** for the setter, the field and the getter describe the three
values the same way in Rust, Python, Node and Java. The generated JS
docs are regenerated to match.
## Testing
- `rust/lancedb`: 73 LSM tests pass, including one case per value. With
the decoder typed as a list, the `null` case fails.
- Java: two cases for `null` and `[]` on the read path, run by the Java
CI job.
- `cargo fmt`, `cargo clippy -D warnings` and `ruff format` are clean.
Simplify experimental materialized views to one output-only storage
layout and one full-rebuild refresh implementation.
## Current layout
Local materialized views currently maintain incremental-refresh state
alongside the materialized values:
- an internal `__source_row_id` column for source provenance;
- `mv.definition` plus `mv.incarnation`;
- source version/timestamp, view version, and last-refresh watermarks;
- optional `mv.staging` state for table-function sources; and
- stable-row-ID requirements on the source table.
Refresh classifies source changes, appends or evicts rows when possible,
and falls back to a rebuild for unsupported deltas. Remote
create/refresh also use separate REST mutation paths.
## New layout
An MV is an ordinary Lance backing table containing only:
- the defining query's output columns;
- its current data fragments; and
- `mv.definition`, encoded as a versioned SQL envelope such as
`{"kind":"query","format":1,"query":"SELECT ..."}`.
There is no provenance column, incarnation, source/view watermark,
staging metadata, or stable-row-ID requirement. Local refresh may still
pin a source version for reproducibility, but it always recomputes the
complete result.
Full refresh streams the new result into uncommitted fragments and then
publishes a single transaction that removes every old fragment and
installs the new set. A shared conflict token prevents concurrent
replacements from both committing. This fragment-replacement primitive
is also used by Sophon's SQL worker.
## New remote create workflow
```text
Connection::create_materialized_view(...)
-> builder renders the defining SELECT
-> remote Database receives a CreateMaterializedViewRequest
-> submit CREATE MATERIALIZED VIEW ... AS ... through Flight SQL
-> retain the SQL Query handle while the Job is running
-> consume the durable SQL-job result
-> open the created table and read mv.definition
-> return MaterializedView
```
Remote refresh similarly submits `REFRESH MATERIALIZED VIEW` through
Flight SQL. Cancelling either wrapper forwards cancellation to the
retained SQL query before aborting the local task, so the server
operation is not silently left running.
## API changes
- remove incremental/no-op modes and the `full` switch;
- remove distributed grouped/partitioned refresh APIs and native
vector-source MV APIs;
- keep full-refresh results across Rust, Python, and TypeScript;
- preserve list/describe/drop as object-management operations while
routing create/refresh mutations through SQL.
The storage contract is experimental and has no compatibility shim;
views using the removed layout must be recreated.
CatalogConnection.list_databases should return an iterator so that users
don't have to manually re-implement pagination. For those who do want
more control over pagination, add num_page_results and page_token to the
Iterator object, and also allow the iterator object to be created at a
specific page token.
Add Reverie banner to the top of README until event ends.
Additionally, I also removed the "LanceDB Cloud" skinny banner since
we're not promoting that right? Should we modify the larger LanceDB
modify to not mention "Try LanceDB Cloud"?
Closes#4270.
## Summary
Blob v2 columns now accept more of the containers TypeScript code
commonly has, both as the column value and inside `{ data }` / `{ uri
}`:
| Input | Handling |
|---|---|
| `ArrayBuffer` | `new Uint8Array(value)`, no copy |
| `URL` | stored as `value.href` |
| `Blob` / `File` | `await value.arrayBuffer()` in the async write
paths: `createTable`, `add`, `mergeInsert` |
`makeArrowTable` is synchronous, so it can't read a `Blob`. Given one,
it throws an error that names the field and row and points to the async
APIs or `new Uint8Array(await value.arrayBuffer())`. It does not write a
null blob.
### Types
`BlobInput` is now the accepted input type. It is widened to the types
above and exported from the package entry point with `BlobData` and
`BlobUri`, so callers can annotate rows and `tsc` catches bad inputs.
The struct forms are a union that requires exactly one of `data` /
`uri`. The old normalized `{ data, uri }` shape is renamed to
`BlobValue` (internal).
### Implementation
- `blob.ts`: `normalizeBlobInput` (sync: `ArrayBuffer`/`URL`),
`resolveBlobInput` (async: `Blob`/`File`). `coerceBlobValue` normalizes
first.
- `arrow.ts`: `mapBlobInputs` walks only the blob positions in the
schema, including blobs nested in structs and lists. It copies records
and arrays only where a value changed, so caller data is never mutated.
`resolveBlobInputs` runs before `makeArrowTable` in `convertToTable`
(used by `add` / `mergeInsert`) and in `createTable`. Each distinct
`Blob` is read once.
- `makeArrowTable` now coerces every blob value to the full `{ data, uri
}` struct **before** schema inference. This also fixes two bugs that
existed before this change:
- Rows mixing plain bytes with `{ data }` failed inference.
- A `{ uri }`-only struct produced a blob struct missing its `data`
child.
Blob validation errors now include the field path and row.
- Also fixed along the way:
- `add` / `mergeInsert` on a table with an embedding function rejected
most blob values, because `ensureNestedFieldsExist` filled blob columns
in like ordinary structs. It now skips them.
- With a schema, a struct field that is `null` in one row and a record
in a later row failed inference. Primitives and arrays given for a
struct field are now rejected instead of being written as an all-null
struct.
- Blob structs with keys other than `data` / `uri` are rejected, which
catches typos. Class instances with `data` / `uri` are handled like
plain objects.
## Testing
- Unit tests in `__test__/blob.test.ts`: coercion of the new types,
rejection and error messages for `Blob` in the sync path, nested lists
and structs, `resolveBlobInputs` (only blob columns touched, caller data
untouched, shared `Blob` read once).
- Table tests in `__test__/table.test.ts`:
- `createTable`, `add`, and `mergeInsert` round-trip `ArrayBuffer` /
`Blob` / `File` bytes through `fetchBlobs`.
- `URL` and `{ uri: URL }` are added to the external-blob round-trip
test from #4317 (`allowExternalBlobOutsideBases`).
- Full `jest` suite passes locally after the rebase (938 passed). `pnpm
lint` is clean and `pnpm run docs` has been regenerated.
Streaming inputs (`ReadableStream`, Node `Readable`, async iterables)
remain out of scope, as the issue says.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
https://claude.ai/code/session_012U4KdHofT5edv3LcXHXbLv
---------
Co-authored-by: Claude <noreply@anthropic.com>
`nprobes(0)` bypassed the validation used by the minimum and maximum
probe setters, allowing zero into query requests and producing
inconsistent local and remote results. Sync Python could additionally
interpret the zero maximum as an unbounded search.
Reject zero in the Rust vector-query builder and propagate its input
error through the Python vector/hybrid and Node bindings. Validate
nonpositive counts in the sync Python vector and hybrid builders so
every SDK and backend reports `nprobes must be greater than 0` before
execution. Update the Rust examples and document the positive-count
requirement.
Regression tests cover local and remote vector/hybrid builders,
rejection before remote query requests, promised TypeScript query
vectors, and positive counts replacing both probe bounds.
Validation:
- Rust probe regression tests: 2 passed.
- Focused Python query, remote, hybrid, and serialization tests: 22
passed. The four sync regression cases fail with the original setters.
- Focused TypeScript indexed local and mocked remote tests: 2 passed.
- Workspace `cargo check --features remote --tests --examples` and
Clippy passed.
- Rust formatting, Python formatting/lint, and TypeScript
build/lint/docs passed. Repository-wide `ruff check .` reports 29
existing errors in unchanged CI scripts; `ruff check python` passes.
Fixes#4388
BREAKING CHANGE: Rust `VectorQuery::nprobes` now returns `Result<Self>`
instead of `Self`; callers must handle the result, as with the existing
minimum/maximum probe setters.
<!-- lance-gatekeeper-fix:v1 agent=e92fda5a212c7f9e80fa55e7b4e4634d
generation=1 -->
Co-authored-by: Gatefixer <313497061+lancedb-gatefixer[bot]@users.noreply.github.com>
Empty local TypeScript queries returned a zero-row Arrow table with no
columns because `toArrow()` built the table solely from record batches.
Local streams can yield no batches, while remote streams often supply an
empty batch carrying the schema.
Expose the executed stream's schema through the native iterator and
decode it into an empty Arrow table when no batches arrive. This
preserves projected and search columns, types, nullability, and metadata
without executing another query. Document the empty-result behavior.
Validation:
- Eleven regression cases failed with the original `toArrow()`
implementation; all twelve now pass, including remote schema-only and
empty-batch responses.
- All 1,075 tests in the query, remote, Arrow, and table suites pass.
- Native build, TypeScript compilation, Rust formatting and Clippy (`-D
warnings`), TypeScript lint/formatting, and documentation generation
pass.
Fixes#4386
<!-- lance-gatekeeper-fix:v1 agent=7d589da1f7db5c7383f9600490e111a9
generation=1 -->
Co-authored-by: Gatefixer <313497061+lancedb-gatefixer[bot]@users.noreply.github.com>
Thanks @vincentkoc for starting this! I was just looking into this
myself. I started with your PR and added:
- make arrow 21 the default
- widen the peer range to <22 so if they release 21.3 that'll be
included
- have to do skipLibCheck in tsconfig.json, because of flatbuffers 25
which needs TypeScript 5.7
- fix override in Symbol.hasInstance
- support new types in Arrow 20-21 (LargeList, Utf8View, BinaryView,
IntervalMonthDayNano)
- arrow-compat job in nodejs.yml that runs tests with arrow 19 and 20
(adds 2 sec)
- put the list of arrow types in one place
- update NODEJS_THIRD_PARTY_LICENSES.md
- regenerated typescript docs (sorry about reorderings, one time cost)
- reformat arrow.test.ts (sorry, almost all whitespace, thanks to biome.
git diff -w shows 110 lines edited)
- fixed Sliced Utf8View / BinaryView serialization error, by just
converting them to Utf8 and Binary (as our rust code would anyway)
---------
Co-authored-by: Vincent Koc <vincentkoc@ieee.org>
Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>
Closes#4288.
Blob reads in Node can now be cancelled. `BlobFile.read`, `readRange`
and `readRanges`, and `Table.fetchBlobs` and `fetchBlobFiles` take an
optional `{ signal?: AbortSignal }` (new `BlobReadOptions` type). When
the signal aborts, the call rejects with `signal.reason` (an
`AbortError` unless the caller gave a reason) and the native future is
dropped, so the read stops instead of running to completion. A signal
that is already aborted rejects before any read starts.
How it works:
- On the Rust side, these five methods are now sync `#[napi]` methods
that return `env.spawn_future(...)`. The future is wrapped in
`futures::future::abortable`, and the abort handle is registered with
napi's `AbortSignal::on_abort`. napi's `AbortSignal` is `Rc`-based, so
it can't be an argument of an `async fn`, which is why the methods
changed shape. The TypeScript signatures are unchanged apart from the
new optional argument.
- napi-rs installs its own `onabort` on the signal it receives, which
would overwrite a handler the caller set. So the TypeScript wrapper
passes a private `AbortController` signal to the native call for each
request, forwards the caller's abort to it with `addEventListener(..., {
once: true })`, and removes the listener when the call settles.
Tests in `table.test.ts`:
- an already aborted signal rejects on all five methods, and the handle
still reads afterwards
- a custom abort reason is what the call rejects with
- a read with a signal that never aborts returns normally and leaves no
`abort` listener on the signal
- aborting a 32 MiB `readRange` right after it starts rejects with
`AbortError`, and the same handle reads again afterwards
The Node docs under `docs/src/js` are regenerated.
I didn't add a test for where the `read()` cursor ends up after a
mid-flight abort on a local table. The remote `BlobFile` documents that
a cancelled read leaves the cursor unchanged, but I haven't confirmed
the same for the native Lance handle, so the docs don't claim it.
Closes#4300.
The TypeScript `BlobFile` only had `size()`, `read()` and `readRange()`,
while the Rust `BlobFile` behind it also has `seek`, `tell`,
`read_up_to`, `read_ranges` and `close`. This exposes those on the Node
binding:
- `read(maxBytes?)` reads at most `maxBytes` from the cursor (Rust
`read_up_to`). Without the argument it reads to the end, as before.
- `readRanges([{ start, end }, ...])` reads several half-open ranges and
returns one buffer per range, in order. Like `readRange`, it does not
move the cursor.
- `seek(position)` and `tell()` move and report the cursor.
- `close()` releases the handle, and `isClosed()` reports it. Every
read, `seek` and `tell` after `close()` fails with "blob file is already
closed". A second `close()` does nothing. The binding keeps its own
`closed` flag, the same way the Python `BlobFile` does.
Offsets and lengths are `bigint`, like `readRange` and `size()`.
`BlobRange` is exported as a type.
The new tests in `table.test.ts` cover chunked reads with
`read(maxBytes)`, `seek` and `tell`, a negative seek position,
`readRanges` order and cursor, a `readRanges` end past the blob size,
and reads after `close()`. The Node docs under `docs/src/js` are
regenerated with `pnpm run docs`.
I left the `ReadableStream`/async iterator idea from the issue out of
this PR. The AbortSignal work in #4288 touches the same methods, so it
can follow on top of this.
## Cause
Remote `fetch_blobs` sent every row ID in one Cloud request, exceeding
the server's 1024-row or 64 MiB byte cap. A single blob over the byte
cap could not be read through this method.
## Fix
- Send at most 1024 row IDs per request and split batches further when
the server reports the blob-byte cap, preserving input order and nulls.
- Resolve one exact dataset version before multi-request reads. If an
initial single request hits the byte cap, resolve the version before any
successful split or Range read; use that version for every resulting
request.
- Read an individual oversized blob through the existing Range route.
- Document the per-request caps and transparent handling in the Rust,
Python, and TypeScript APIs and generated JS docs.
## Validation
- Focused Rust `fetch_blobs` tests: 26 passed, including row-count,
byte-cap, Range fallback, and exact-version assertions.
- Rust clippy and formatting passed.
- Focused Python blob tests: 13 passed; Ruff lint and formatting passed.
- Node build, lint, docs generation, and focused `fetchBlobs` test
passed.
Fixes#4275
<!-- lance-gatekeeper-fix:v1 agent=6ae94d49bf1d4cae057bba72584e7b90
generation=1 -->
---------
Co-authored-by: Gatefixer <313497061+lancedb-gatefixer[bot]@users.noreply.github.com>
## Summary
Materialize a source-preserving dedup result from an indexed, pinned
snapshot with a short declaration. The default greedy policy keeps the
smallest unassigned snapshot row ID and removes only its directly
matching neighbors: For A < B < C, an A–B–C chain without an A–C edge
keeps A and C.
```python
from lancedb import vector_dedup
view = db.create_materialized_view(
"images_clean",
vector_dedup("images", column="phash", distance_threshold=4),
)
cleaned = view.table
```
The Python source expression captures the source version once at
creation and
waits for the materialized result by default. Use `dataset_version=...`
for an
explicit snapshot, `with_no_data=True` for declaration only, or
`create_materialized_view_async(...)` for a job handle. AsyncConnection
supports
the same expression. It uses the existing MV REST endpoints and registry
jobs,
without opening a SQL query connection. Source names are exact
root-namespace
table names. Additional select/where/limit options are rejected for this
source.
The SQL declaration remains available:
```sql
CREATE MATERIALIZED VIEW images_clean AS
SELECT * FROM vector_dedup('images', 7, 'phash', 4);
REFRESH MATERIALIZED VIEW images_clean;
```
This is the host-facing SQL entry point. The MV builder now accepts a
typed native vector source; the Rust SDK also supports the same
definition through `MaterializedViewDefinition::from_sql` and
`prepare_definition`; `view.refresh().execute()` executes it locally.
Hosts distribute its units using their existing job infrastructure. The
raw `vector_duplicate_pairs` source remains available separately when
callers want the pair relation.
## Implementation and contract
- Use actual Rust Lance `13.0.0-beta.15` (`db53dcf367`); the native
partition primitive computes pairs from index representations without
source-vector aggregation or a Python pair loop.
- Extend partitioned MV refresh with two dependent waves. Physical
segment/partition tasks stream pairs through a bounded external sort,
select direct representatives and write per-source-fragment bitmap
artifacts. Source-fragment tasks start after every selection receipt
completes and stream retained original rows, including blob payloads,
into uncommitted output fragments.
- Reuse normal blob write coercion and row-mask scans, including stable
row-ID translation after compaction. Null vectors, isolated rows and
source deletions are preserved correctly. Conflicting representative
decisions across overlapping index scopes fail before publication.
- Expose `dependency_units()` and `write_refresh_partition_with_inputs`
alongside the existing plan/commit API. Receipts bind
snapshot/configuration/policy/destination generation. Only a complete
accepted set can publish; unfinished units restart, completed units can
be reused. There is no pair-position checkpoint.
- Use MV format 4 for dedup results and format 3 for native pairs;
Python and TypeScript metadata readers recognize both. No source
deletion or source row-ID migration occurs.
Only same-segment/same-partition edges are covered. Quantized scores use
symmetric represented-vector distances. Result materialization requires
V2 data storage and is initially a native MV source, not an ordinary
SELECT table function. Compressed vertex masks stay in memory; edge
sorting spills to local disk. Unreferenced artifacts use normal Lance
retention/cleanup and must be retained for the job's recovery window.
## Validation
AWS Linux validation:
- Native pair/result integration matrix passed: multiple
segments/partitions, exact thresholds, empty output, cross-batch data,
single-process pair parity, source preservation, lost receipts and
publication guards.
- Blob/null-vector/pinned-deletion tests passed with both row-ID modes,
including compaction that changes physical row addresses.
- Representative policy, forced external-sort spill and
conflicting/corrupt artifact tests passed.
- Full MV regression suite: 153 passed, 2 pre-existing ignored. Rust
formatting and Clippy passed.
- Python MV suite: 47 passed; TypeScript MV suite: 11 passed. Native
bindings were rebuilt in project-local environments; formatting, lint
and TypeScript docs passed.
- Rust declaration doctests: 3 passed, including the complete local
dedup example.
- Companion host validation: 41 MV job tests passed (1 pre-existing
ignored), full workspace Clippy passed, and the complete process-level
CLI E2E suite passed (3 tests). Recovery exercises both selection and
materialization waves.
- A real CIFAR-10 pHash run used five actual registry-worker owners,
completed 32 selection + 24 materialization tasks, and retained 49,846
of 50,000 rows with identical original values and image payloads.
Host workflow performance measurements are recorded in the companion
host PR. Cross-platform CI is still running. The previous remote-test
bootstrap failed before Cargo tests with `401 Bad credentials`; the
workflow fix described below is being validated by CI. No deployment or
merge is performed.
## Python source validation
AWS tests cover automatic and explicit snapshots, physical/stable row
IDs, local
and remote creation, sync/job/async-connection APIs, delayed refresh,
strict
options and identifier quoting. The native Python extension was rebuilt
through
the project's uv/maturin backend. Ruff, Pyright and the full MkDocs
API-reference
build passed; both new public symbols are rendered.
A real 50,000-image FEv2 run disabled both Python SQL entry points and
supplied an
unreachable SQL endpoint. The new API still materialized the same 49,846
retained
rows and original image payloads. Three recorded creation/refresh jobs
completed
56 tasks each on all five registry-worker owners, and remained on source
snapshot
3 after source latest advanced to 4. No worker or server wire-protocol
changes
were needed for this client entry point.
Previous CI authentication failure:
https://github.com/lancedb/lancedb/actions/runs/36334679276/job/108663151265.
## Review and CI fixes
- Validate all JSON merge source fields before projection, rejecting
unknown and duplicate names at every struct level. Missing/reordered
fields and ordinary JSON merges remain supported. A checked-in 12-case
integration matrix covers root fields, structs, lists, large lists,
fixed-size lists and map values; rejected writes leave the table version
and row count unchanged.
- Match namespace connection MV method signatures to
`MaterializedViewSource` in all four sync/async methods, fixing the
Python 3.10 import failure from runtime override checks.
- Restore the remote-test script's encrypted-CLI path: use the Actions
token for artifact download and pass `SOPHON_READ_TOKEN` under the
variable the decryption script consumes. The previous workflow omitted
that variable and attempted the private release path, failing with HTTP
401. On the final head, remote CI passes: 1,464 Rust unit tests, the
integration targets and doctests pass (3 unit tests ignored).
AWS validation for these fixes: both review reproducers failed before
their fixes and pass afterward; 55 merge tests, 29 cast tests and the
standalone 7-case admission regression pass. Python 3.10.21 imports
successfully; 90 MV/namespace tests, 14 JSON tests and four real
namespace dedup cases pass. After `794b97a0`, the native binding was
rebuilt again and the JSON suite rerun. Rust formatting/Clippy, Ruff and
Pyright pass. Sophon's locked test compilation passes against the final
SDK source for all seven affected crates. Extended runners, logs and
benchmark artifacts remain local.
Gatekeeper recommends approval on `794b97a0`, and the `breaking-change`
label is set. Final CI: **49 checks passed, 3 expected skips, no
failures or pending checks**, including remote tests, Python 3.10,
minimum dependencies and Windows ARM Rust tests. All wheel builds pass
after retrying the Linux matrix affected by transient AlmaLinux
repository-metadata 404s. All code-review threads are resolved. The PR
remains open for maintainer review and merge.
---------
Co-authored-by: Yang Cen <yangcen@Yangs-Mac-mini.local>
Co-authored-by: Lance Release <lance-dev@lancedb.com>
Cancellation is the only job control the SDK exposes, and it is
terminal, so a long-running server-side job cannot be parked and picked
up again. This adds `pause_job` and `resume_job` to the Rust core
connection and the Python bindings (sync and async), posting to the
server's `/v1/jobs/pause` and `/v1/jobs/resume` endpoints.
A pause parks the job until it is resumed: its workers drain and stop.
The outcome strings mirror the server's answers — a job finalizing its
results reports `"committing"` and cannot be parked, and a resume before
the drain is confirmed reports `"still_pausing"`; both are retried
rather than failed. Resuming re-queues the job and its workers pick
their work back up from checkpoints. Local connections report the
operations as unsupported, like the rest of the jobs API.
Adds opt-in `batch_size=40`: 80 non-null candidates use **2 requests
instead of 80**. Default `batch_size=1` preserves the existing payload.
Each batched question sees only its document and the shared query;
instructions/criteria stay unchanged. Prompts referencing
`state.document` need adaptation. Concurrency still limits requests;
retries remain SDK-managed. Batch-local IDs and ordered results preserve
duplicate documents; invalid IDs/probabilities raise without fallback.
Validation: **124 automated tests passed**, plus live search
integrations in both modes. A **100-query live subset test of the
initial implementation** (6,851 candidate pairs; `jev-1.13.0`, SDK
0.7.1, concurrency 32) passed: unbatched/batched calls **6,851/199**,
median **877/351 ms**, p95 **9,446/598 ms**. Hybrid Hit@5/Hit@10 was
**83%/89% vs 84%/90%**; vector/FTS results and exact configuration are
in the [test
report](https://github.com/lancedb/lancedb/blob/typesafe-request-batching/python/benchmarks/typesafe_batching.md).
Ruff and MkDocs passed. The simplified batching flow also passed a fresh
four-query live check: 292 candidate pairs, with 292 unbatched versus 8
batched calls.
Builds on #4209; motivated by [research
#7](https://github.com/lancedb/research/pull/7).
Dropping a view unbinds its name and leaves the definition dataset to a
server-side cleanup job, so the two are separate events a caller may
want to wait on.
`drop_view_async` returns that job — the same shape
`drop_materialized_view_async` and `drop_function_async` already use: a
`202` carries the job id, a `200` (nothing was bound to the name) yields
an already-finished job with no id, and any other success status is an
error rather than a silent no-op.
## `drop_view` waits
`drop_view` now awaits the job before returning, so a caller who does
not want to think about cleanup gets the stronger guarantee: when it
returns, the definition really is deleted.
That is deliberately **different** from `drop_materialized_view` and
`drop_function`, which return as soon as the name is unbound and
document that content may still be deleting. The view API is the newer
one, and waiting is the semantic worth having; the other two are left
alone rather than changing behaviour already released.
## Surfaces
`Database` trait, the remote client, `Connection`, and the Python and
Node bindings — matching where `drop_materialized_view_async` is already
exposed.
Four client tests cover the accepted case reporting its job id, the
nothing-bound case reporting a finished job, a `202` without a usable
`job_id`, and an unexpected success status.
A view is a named query a database stores and plans on every read. It
holds no rows, which is the whole difference from a materialized view.
## API
| Verb | Route |
| --- | --- |
| `create_view(name, query, namespace_path)` | `POST
/v1/view/{id}/create` |
| `describe_view(name, namespace_path)` | `POST /v1/view/{id}/describe`
|
| `drop_view(name, namespace_path)` | `POST /v1/view/{id}/drop` |
| `list_views(namespace_path)` | `GET /v1/namespace/{id}/view/list` |
On `Connection` and the `Database` trait, with the remote client, Python
(sync and async) and Node bindings. Local databases return
`NotSupported`: the server side is Sophon's, where a view is an object
of the database manifest.
`ViewDescription` carries the defining query, the database *and
namespace path* unqualified names in it resolve against, and the schema
the query resolved to. `create_view` returns one, so a caller has the
schema without a second call.
Both defaults travel with the view because it outlives the session that
declared it: the server re-plans the stored query on every read, so a
reader resolving an unqualified name against its own defaults would read
a different table. `default_namespace_path` crosses the wire as
`default_namespace`, a path like `namespace`, absent for the root.
There is no replace: a name already taken is an error, and changing a
view is a drop followed by a create, each authorized against what it
actually touches.
Querying a view stays SQL's job. There are no rows behind a view, so
there is no `open_view` returning a `Table`.
A view could only map source rows one to one, or one to many through a
FROM-position item, so nothing could see all the rows sharing a key.
A view query now takes `GROUP BY expr, ...` with aggregate projections,
planned and executed by DataFusion over the lance scan. A group spans
fragments, so a grouped view is recomputed in full whenever its source
changes; each row's provenance is its group's smallest source row id.
Such a query is stored as definition format 2, so a reader that predates
grouping reports the view as unrefreshable instead of failing to parse
it.
Stacked on #4190.
A view definition was a structured record under a `kind` tag, one kind
per query shape, and a Function returning `list<struct>` was about to
add a third. That names shapes instead of describing a relation.
A materialized view is now a relation defined by a query, stored as one
canonical SQL string under a format number:
```sql
SELECT columns FROM [ns.]table [, function(args) AS alias | , UNNEST(column) AS alias]
[WHERE predicate] [LIMIT n]
```
Any other clause is refused at parse time. Older readers report the view
as unrefreshable, the pre-format layouts still read, and a legacy view
is rewritten on its next refresh that commits, rebuilt only where its
raw text meant something else under lance's parser.
A Function in FROM position yields one row per element it returns, as a
table function does in any dialect. The server stages its list output in
a hidden table and records that binding beside the query, which stays as
the user wrote it; refresh scans the staging and unnests the column, the
same operator as UNNEST over a list column the table already holds. Row
ids repeat per element, so eviction and incremental append are
unchanged. A local database refuses a Function in FROM position, since
it has no executor.
A refresh running under a skip policy records each row it skipped, with
the failing input and the error, but the client could not read that
store: the server exposes it over SQL and, since recently, a REST route.
A user who hit per-row failures still had to open a SQL session.
`Table::function_errors` calls the route. The listing is table-addressed
with optional job and column filters, the same addressing the SQL
surface uses, so the two cannot disagree about what a table's errors
are. The two non-record signals come back as their own fields rather
than as rows: capped-fragment summaries, and whether the listing stopped
at its limit. Local tables refuse rather than answer with an empty list.
Python and Node expose the same call, with the same optional filters.
Lance Release
Yang Cen
Will JonesandClaude Opus 5.5
Jack Ye
lancedb-gatefixer[bot]
Brendan Clement
Colin Patrick McCabe
Yuval LifshitzandClaude Opus 5.0
XY Zhan
ccmao1130
Bilal Atique
ningsh7
Wyatt Alt
Taylor