## 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>
LanceDB Documentation
LanceDB docs are available at docs.lancedb.com.
The SDK docs are built and deployed automatically by Github Actions
whenever a commit is pushed to the main branch. So it is possible for the docs to show
unreleased features.
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
cd docs
mkdocs serve
If you want to just generate the HTML files:
PYTHONPATH=. mkdocs build -f docs/mkdocs.yml
If successful, you should see a docs/site directory 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