lance-format/lance

Support StringView type in FTS indices

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#8,245 opened on Aug 4, 2026

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A-indexgood first issue

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Description

We already have code that it generic over Utf8 and LargeUtf8, so it should mostly be a matter to findings the places where we match on those and add cases for StringView.

Examples:

https://github.com/lance-format/lance/blob/11eeb29161a2ac2763ff8cc6aa1fde8eb4592291/rust/lance-arrow/src/lib.rs#L470-L476

https://github.com/lance-format/lance/blob/11eeb29161a2ac2763ff8cc6aa1fde8eb4592291/rust/lance-index/src/scalar/inverted/index.rs#L7966

Contributor guide

Research direction
Inspect the referenced code locations in lance arrow and lance index. Find where Utf8 and LargeUtf8 types are matched, understand the pattern, and add StringView as a new case. Run the existing FTS tests to verify.
Tech stack
rust
Domain
databasebackend
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
GitRust
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
75