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Will JonesandClaude Opus 5
3be313f634
Backports the test fix from #4183 (commit `21ecafe9a` on `main`) to `release/v0.39`. ## Root cause `when optimizing a dataset > cleanups old versions` took its cutoff with `new Date()`. A JS `Date` has millisecond precision; Lance stores version timestamps with nanosecond precision. If the cutoff landed in the same millisecond as the preceding commit, truncating to milliseconds put the cutoff *before* that commit, so the version was not eligible for pruning and `stats.prune.oldVersionsRemoved` came back as `1` instead of `2`. This became possible on this branch with #4160, which changed `cleanupOlderThan` to be passed to the native binding as an absolute timestamp. It is timing- and machine-dependent, which is why it shows up on the fast Linux runners and not locally. ## Fix Wait for the clock to tick over to the next millisecond before capturing the cutoff, so the cutoff is strictly later than every commit the test made. Same change that is already on `main`. ## Observed failures - https://github.com/lancedb/lancedb/actions/runs/34945208311/job/104323950514 — scheduled NPM Publish on `main` at `ffe94a65a`, before #4183 landed. - https://github.com/lancedb/lancedb/actions/runs/35257750543 — #4216 (`update-lance-12.0.0-v0.39`), which targets this branch and so does not have the fix. ## Verification This is a flake, so there is no deterministic local repro to show red-then-green. The change is byte-identical to the one merged in #4183; `main` has had three green NPM Publish runs since it landed, and no recurrence of this test on `main`. Note: `delete unverified`, immediately below, still uses `new Date()` for its cutoff. It asserts `toBeGreaterThan(1)` rather than an exact count, so it has one version of slack, but it is the same latent race. Left alone here to keep this a faithful backport — happy to harden it on `main` and backport that too. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
The Multimodal AI Lakehouse
How to Install ✦ Detailed Documentation ✦ Tutorials and Recipes ✦ Contributors
The ultimate multimodal data platform for AI/ML applications.
LanceDB is designed for fast, scalable, and production-ready vector search. It is built on top of the Lance columnar format. You can store, index, and search over petabytes of multimodal data and vectors with ease. LanceDB is a central location where developers can build, train and analyze their AI workloads.
Demo: Multimodal Search by Keyword, Vector or with SQL
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Key Features:
- Fast Vector Search: Search billions of vectors in milliseconds with state-of-the-art indexing.
- Comprehensive Search: Support for vector similarity search, full-text search and SQL.
- Multimodal Support: Store, query and filter vectors, metadata and multimodal data (text, images, videos, point clouds, and more).
- Advanced Features: Zero-copy, automatic versioning, manage versions of your data without needing extra infrastructure. GPU support in building vector index.
Products:
- Open Source & Local: 100% open source, runs locally or in your cloud. No vendor lock-in.
- Cloud and Enterprise: Production-scale vector search with no servers to manage. Complete data sovereignty and security.
Ecosystem:
- Columnar Storage: Built on the Lance columnar format for efficient storage and analytics.
- Seamless Integration: Python, Node.js, Rust, and REST APIs for easy integration. Native Python and Javascript/Typescript support.
- Rich Ecosystem: Integrations with LangChain 🦜️🔗, LlamaIndex 🦙, Apache-Arrow, Pandas, Polars, DuckDB and more on the way.
How to Install:
Follow the Quickstart doc to set up LanceDB locally.
API & SDK: We also support Python, Typescript and Rust SDKs
| Interface | Documentation |
|---|---|
| Python SDK | https://lancedb.github.io/lancedb/python/python/ |
| Typescript SDK | https://lancedb.github.io/lancedb/js/globals/ |
| Rust SDK | https://docs.rs/lancedb/latest/lancedb/index.html |
| REST API | https://docs.lancedb.com/api-reference/rest |
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We welcome contributions from everyone! Whether you're a developer, researcher, or just someone who wants to help out.
If you have any suggestions or feature requests, please feel free to open an issue on GitHub or discuss it on our Discord server.
Check out the GitHub Issues if you would like to work on the features that are planned for the future. If you have any suggestions or feature requests, please feel free to open an issue on GitHub.
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