IBM/velox
Mar 2025 – Apr 2025
2 Months active
Languages Used
C++CMake
Technical Skills
C++DatabaseRefactoringSQLAggregate FunctionsC++ Development
Yun Wu
PROFILE
Yun Wu
Sunny Wu contributed to the IBM/velox repository by refactoring aggregate function registration to enable independent handling of arbitrary and array_agg aggregates, reducing build size and improving deployment efficiency. Using C++ and CMake, Sunny restructured the registration architecture to avoid default inclusion of all Presto aggregates, supporting modular builds and easier feature toggling. In addition, Sunny developed a dedicated Performance Benchmark Suite for Streaming Aggregation, implementing C++ benchmarks to evaluate array_agg and arbitrary functions across various data types and group sizes. This work established baseline performance metrics, supporting ongoing optimization and providing a foundation for rigorous, repeatable performance evaluation in Velox.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
2Total
Bugs
0
Commits
2
Features
2
Lines of code
280
Activity Months2
Your Network
2301 people
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.
Activity
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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
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