lance-format / lance-format/lance
Broad Read-Write test
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@wjones127 is already working on this.
Since Sep 12, 2025.
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Description
Want a broad test that could catch issues like: https://github.com/lancedb/lance/pull/4396
Can do similar plan to https://github.com/lancedb/lance/issues/4416
- Have one large master schema with all primitive types plus common nested ones
- Have all index types on same dataset, including common variations
- all distance types for IVF PQ
- with_positions for FTS
Then vary the state of that dataset:
- Fragmentation: one fragment, two rows per fragment
- Deletions: No deletions, alternating deletions
- Index coverage: full coverage, partial coverage
That gives 6 datasets to test.
Then run:
- Full scan
- Query that hits each index (with varying queries)
- Append
- Optimize each index
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
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