Files
lancedb/docs
Xuanwo 1544ad65a8 feat: expose structured job progress to SDK callers (#4808)
Job callers currently lose the server's structured progress when
describing, listing, or waiting for a job. Expose Rust and Python
progress snapshots and optional wait observers using the existing
backend poller. Python supports callbacks, a caller-owned tqdm-like bar,
or `progress=True`; `status()` still returns a string and the default
wait behavior is unchanged.

Preserve unknown progress fields and phases from newer servers, and
report omitted counters as unknown. Each wait calibrates a caller-owned
bar from its first complete snapshot, then uses a high-water mark within
the same execution epoch; a new epoch or smaller plan resets the bar.
ETA is best-effort and omitted for missing, stale, paused, or
incompatible samples.

Newly submitted index and refresh handles forward observers through
their freshness wrapper while retaining successful-wait read
consistency. The Jobs guide includes draft Python/Rust snapshot and
observer examples for release; TypeScript progress support remains
tracked under ENT-3500.

Validation on the development EC2 host: the initial 11 Python progress
tests, REST fixture caller, and two Rust progress regressions passed.
After fixing freshness-wrapper forwarding, rebuilt the Python extension
and ran two submitted-handle Python tests plus the new Rust refresh and
index regressions (one test each); all passed. Strict Clippy, rustfmt,
and targeted Ruff passed. The final commit only wraps the new guide
section in an MDX draft and clarifies language support. Repository-wide
Ruff reports 48 existing findings in six unchanged docs/web-tests files.

This publishes the SDK portion of ENT-3500. Server-side live-split and
terminal-progress changes and the combined server/SDK end-to-end
scenario remain in progress. Refs ENT-3500.

BREAKING CHANGE: Rust struct literals for `JobInfo` must add `progress:
None`, `phase: None`, and `paused: false`. Literals for `JobDescription`
must add `progress: None`, `phase: None`, `queue_reason: None`,
`waiting_for_job_id: None`, and `paused_at_millis: None` when that
metadata is unavailable. Existing Python calls remain compatible.
2026-11-03 18:17:19 +08:00
..

LanceDB Documentation

For website guides in docs/web, start with Documentation in CONTRIBUTING.md. That covers editing pages, generated examples, previews, availability and drafts.

This page covers the SDK reference in docs/src, built with MkDocs. Its GitHub Actions workflow builds and deploys on pushes to main, so it can include unreleased APIs. That is separate from the release editions of the Mintlify website.

Building the docs

Setup

  1. Install LanceDB Python. See setup in Python contributing guide. Run make develop to install the Python package.
  2. Install documentation dependencies. From LanceDB repo root: pip install -r docs/requirements.txt

Preview the docs

Run these commands from the LanceDB repository root. The subshell changes into docs to load mkdocs.yml, while leaving your shell in the repository root.

(cd docs && PYTHONPATH=. mkdocs serve)

If you want to just generate the HTML files:

(cd docs && PYTHONPATH=. mkdocs build)

If successful, you should see a docs/site directory in the repository root that you can verify locally.

Adding examples

To make sure examples are correct, we put examples in test files so they can be run as part of our test suites.

You can see the tests are at:

  • Python: python/python/tests/docs
  • Typescript: nodejs/examples/

Checking python examples

cd python
pytest -vv python/tests/docs

Checking typescript examples

The examples depend on @lancedb/lancedb at file:../dist, so the package must be built before running the tests. This uses pnpm; see the Typescript contributing guide for the toolchain setup.

pushd nodejs
pnpm install
pnpm build
popd

Then you can run the examples by going to the nodejs/examples directory, which is a separate pnpm package with its own lockfile:

pushd nodejs/examples
pnpm install
pnpm test
popd

API documentation

Python

The Python API documentation is organized based on the file docs/src/python/python.md. We manually add entries there so we can control the organization of the reference page. However, this means any new types must be manually added to the file. No additional steps are needed to generate the API documentation.

Typescript

The typescript API documentation is generated from the typescript source code using typedoc.

When new APIs are added, you must manually re-run the typedoc command to update the API documentation. The new files should be checked into the repository.

pushd nodejs
# `pnpm docs` would invoke pnpm's built-in `docs` command, not the script.
pnpm run docs
popd