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Xuanyi Li

PROFILE

Xuanyi Li

Worked on core backend components in Rust, focusing on stability and maintainability across two major open-source repositories. In spiceai/datafusion, addressed critical bugs in the Adaptive Query Execution optimizer by introducing idempotence guards for dynamic filter pushdown and output ordering, ensuring query plan integrity and reducing risk of plan bloat. Enhanced test coverage and documentation to support long-term reliability. In lancedb/lancedb, refactored the index creation logic by extracting it into a dedicated submodule, improving code readability and maintainability without altering functionality. Demonstrated expertise in backend development, refactoring, and query optimization, with a strong emphasis on robust, production-ready code.

Overall Statistics

Feature vs Bugs

33%Features

Repository Contributions

3Total
Bugs
2
Commits
3
Features
1
Lines of code
2,624
Activity Months2

Your Network

384 people

Work History

June 2026

1 Commits • 1 Features

Jun 1, 2026

June 2026: Focused on codebase quality and maintainability in lancedb/lancedb with a targeted refactor of index creation logic, preserving behavior while enabling easier future changes.

May 2026

2 Commits

May 1, 2026

May 2026 monthly summary for spiceai/datafusion: - Focused on improving AQE stability and plan integrity through idempotence guards in critical optimization paths, with tests and documentation to prevent regressions. - Delivered two major idempotence fixes within the Adaptive Query Execution (AQE) replan loop, strengthening reliability of dynamic filter pushdown and output ordering wrappers. - Collaborated on targeted tests and inline documentation to ensure long-term maintainability and reduced production risk. - Demonstrated strong ownership of core optimization components, reflecting business value in more predictable performance and reduced risk of query plan bloat.

Activity

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Quality Metrics

Correctness100.0%
Maintainability86.6%
Architecture100.0%
Performance86.6%
AI Usage33.4%

Skills & Technologies

Programming Languages

Rust

Technical Skills

Backend DevelopmentRefactoringRustback end developmentbackend developmentdata processingquery optimization

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

spiceai/datafusion

May 2026 May 2026
1 Month active

Languages Used

Rust

Technical Skills

Rustback end developmentbackend developmentdata processingquery optimization

lancedb/lancedb

Jun 2026 Jun 2026
1 Month active

Languages Used

No languages

Technical Skills

Backend DevelopmentRefactoringRust