lance-format / lance-format/lance
Add Range and Delta block codecs
Open
@Xuanwo is already working on this.
Since Jul 28, 2026.
A-encoding
A-format
enhancement
format-change
- Dominant language
- Rust
- Stars
- 7.1k
- Forks
- 852
- Avg merge
- 3d 18h
- Merged PRs (30d)
- 272
Description
Goal
Add end-to-end Range and Delta block codecs for non-negative u32/u64 sequences.
Scope
- Add protobuf tags 14 and 15.
- Implement codec construction, validation, encoding, and decoding.
- Add format helpers, documentation, malformed-input coverage, and direct round-trip tests.
- Do not enable production writer selection in this issue.
Context
This is PR 3 of the Generic Block Compression stack extracted from https://github.com/lance-format/lance/pull/8002.
Contributor guide
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.
Assessment
This issue has not been assessed yet.