IBM/velox
Mar 2025 – Apr 2025
2 Months active
Languages Used
C++CMake
Technical Skills
C++DatabaseRefactoringSQLAggregate FunctionsC++ Development
Yun Wu
PROFILE
Yun Wu
Worked on the IBM/velox repository to enhance modularity and performance in aggregate function handling. Developed independent registration mechanisms for the arbitrary and array_agg aggregates, reducing build size and improving deployment efficiency by avoiding default registration of all Presto aggregates. Refactored the registration architecture using C++ and CMake, enabling more maintainable and incremental builds. Additionally, delivered a dedicated Performance Benchmark Suite for Streaming Aggregation, implementing rigorous C++ benchmarks to evaluate array_agg and arbitrary functions across various data types and group sizes. This work established baseline metrics for future optimization and provided a foundation for systematic performance evaluation and comparison.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
2Total
Bugs
0
Commits
2
Features
2
Lines of code
280
Activity Months2
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3251 peopleSame Organization
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Work History
April 2025
1 Commits • 1 Features
Apr 1, 2025April 2025 (IBM/velox): Focused on delivering a dedicated Performance Benchmark Suite for Streaming Aggregation to enable rigorous, repeatable performance evaluation of streaming functions (array_agg and arbitrary) across multiple data types and group sizes. The suite includes new C++ source and CMake integration, establishing baseline metrics for optimization and comparison across code paths.
1 Commits • 1 Features
Apr 1, 2025April 2025 (IBM/velox): Focused on delivering a dedicated Performance Benchmark Suite for Streaming Aggregation to enable rigorous, repeatable performance evaluation of streaming functions (array_agg and arbitrary) across multiple data types and group sizes. The suite includes new C++ source and CMake integration, establishing baseline metrics for optimization and comparison across code paths.
April 2025
March 2025
1 Commits • 1 Features
Mar 1, 2025March 2025: Implemented independent registration for arbitrary and array_agg aggregates to shrink build size by avoiding default registration of all Presto aggregates. This refactor (commit 0f82c9e98133a6327ef27ee662c4e12639eddbfc) enables modular function registration and reduces artifact size, improving deployment time and resource usage. Scope was focused on the IBM/velox repository and aligns with our performance and maintainability goals.
March 2025
1 Commits • 1 Features
Mar 1, 2025March 2025: Implemented independent registration for arbitrary and array_agg aggregates to shrink build size by avoiding default registration of all Presto aggregates. This refactor (commit 0f82c9e98133a6327ef27ee662c4e12639eddbfc) enables modular function registration and reduces artifact size, improving deployment time and resource usage. Scope was focused on the IBM/velox repository and aligns with our performance and maintainability goals.
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Quality Metrics
Correctness90.0%
Maintainability90.0%
Architecture90.0%
Performance90.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++CMake
Technical Skills
Aggregate FunctionsC++C++ DevelopmentCMakeDatabasePerformance BenchmarkingRefactoringSQLStreaming Aggregation
Repositories Contributed To
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