Xuanwo
7cc3904a7e
## Problem Function-backed columns need an exact `fresh`, `stale`, `never_computed`, and `failed` partition for the table version a caller is reading. The existing error listing is capped, and composing it with job and schema listings cannot prove which rows currently failed. ## Behavior - Adds a strict freshness reader beside the existing permissive planner. It distinguishes an absent certificate from legacy evidence that omits failures, and from a current certificate carrying failure coverage. - Extends the immutable freshness sidecar with per-fragment known and failed row bitmaps. Partial or `WHERE` publications cover only observed rows; untouched rows stay unknown. Deleted rows do not block classification. - Adds failure-aware whole-fragment and row-repair writers. A rejected older attempt cannot overwrite failure evidence already recorded for a newer input signature. - Adds `column_status`, `column_statuses`, and `wait_fresh` to Python and the corresponding Node methods. The client calls the server's exact status endpoint, validates the four-way partition and one-version guarantee, and preserves the complete Function version, last-job, and automatic-refresh metadata. - Adds an MDX-commented draft usage section to the Enterprise computed-column refresh guide, covering Python, Rust, and TypeScript and remaining hidden until the server integration ships. - Sends `column`, `branch`, and exact `version` selectors to the status route. A pinned handle rejects a nonempty response from any other table version; latest handles keep the existing read-freshness headers. - Retries `wait_fresh` only for HTTP 503 with `function_column_status_finalization_pending`. Existing failed rows remain visible and do not keep the wait pending; other errors propagate. - Models the shared scheduler projection, including `up_to_date`, real `blocked` states, their reason, failure streak, and effective cooldown. ## Validation This is the SDK side of ENT-3563. Sophon's failure-coverage publication and status endpoint are a separate integration; deployed end-to-end and whole-ticket acceptance remain pending. - Rust: 9 exact freshness/status tests passed, plus 1 exact latest-handle freshness-header test. The pinned transport test was extended with a wrong-version response and rerun at `ebd6649a` (1 passed). Coverage includes untouched partial rows, selected-row failure clearing, cross-generation evidence, typed and non-retried errors, `up_to_date`, blocked scheduler fields, and exact-version requests. - Python: 2 native PyO3 remote-transport tests passed together, including typed retry; one local facade test reaches the existing unsupported boundary. - Node: the NAPI addon built successfully, TypeScript and Biome passed, and the selected native remote-transport test passed 1/0, including exact-version selection and blocked scheduler metadata. - `cargo fmt`, `git diff --check`, Ruff format/lint, Python compile, Biome, and TypeScript checks passed. Validation is mapped by the relevant unchanged source rather than treated as one final-head run: the nine Rust tests ran at `e4d51fc8`, the latest-header and Python remote tests at `31e68b7d`, the local Python test and Node build at `6f213584`, and the final TypeScript/Jest delta at `4f2d5c27`. The final product tree excludes those five private EC2 runner files and adds six generated TypeDoc files plus one hidden draft usage section in the computed-column refresh guide. The Node delta corrected a private TypeScript command and reused the unchanged native addon.
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
- Install LanceDB Python. See setup in Python contributing guide.
Run
make developto install the Python package. - 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