oap-project/velox
May 2025 – Jul 2025
2 Months active
Languages Used
C++
Technical Skills
Error HandlingFunction RefactoringUnit TestingC++C++ DevelopmentConnector Development
Zhiying Liang
PROFILE
Zhiying Liang
Worked on the oap-project/velox repository to deliver core TPCH connector capabilities and enhance slice() function reliability. Developed metadata handling and server-side registration for the TPCH connector, enabling seamless TPCH data access across Velox and Presto Server and supporting benchmark-driven analytics. Addressed edge-case hardening for the slice() function by introducing robust input validation in C++, ensuring negative lengths now trigger user-defined errors consistent with Presto Java behavior. Demonstrated skills in C++ development, connector development, database integration, and metadata management. These contributions improved cross-engine consistency, reduced silent failures, and laid the foundation for broader interoperability and predictable query results.
Overall Statistics
Feature vs Bugs
50%Features
Repository Contributions
3Total
Bugs
1
Commits
3
Features
1
Lines of code
75
Activity Months2
Your Network
3027 peopleSame Organization
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Aaron PollackMember
Aaryaman SagarMember
Aashay GaikwadMember
Ajanthan AsogamoorthyMember
Work History
July 2025
2 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for oap-project/velox: Delivered core TPCH connector capabilities, establishing metadata handling and server-side registration to enable TPCH data access across Velox and Presto Server. This supports benchmark-driven analytics and faster onboarding of TPCH workloads; commits implemented metadata for TpchConnector and added TPCH connector support in Presto Server, laying groundwork for catalog-based configuration and broader interoperability.
2 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for oap-project/velox: Delivered core TPCH connector capabilities, establishing metadata handling and server-side registration to enable TPCH data access across Velox and Presto Server. This supports benchmark-driven analytics and faster onboarding of TPCH workloads; commits implemented metadata for TpchConnector and added TPCH connector support in Presto Server, laying groundwork for catalog-based configuration and broader interoperability.
July 2025
May 2025
1 Commits
May 1, 2025May 2025 Velox (oap-project/velox): Edge-case hardening for slice() and cross-engine consistency; improved robustness and reliability with focused bug fix. 1) Key features delivered: - Robust edge-case handling for slice(): negative length now throws a user-defined error (instead of returning an empty array), aligning with Presto Java behavior. 2) Major bugs fixed: - Negative length inputs now validated with a dedicated error path; aligns with Presto Java behavior. Commit: 0895a72fa08cb4ab5a47c5d3944623ca9e358da4 (#13411). 3) Overall impact and accomplishments: - Increased correctness and reliability of slice operations; reduced risk of silent failures and improved cross-engine parity, supporting more predictable query results for users migrating or integrating with Presto-based pipelines. 4) Technologies/skills demonstrated: - C++ Velox development, robust input validation, cross-language parity with Presto Java, code review and change management.
May 2025
1 Commits
May 1, 2025May 2025 Velox (oap-project/velox): Edge-case hardening for slice() and cross-engine consistency; improved robustness and reliability with focused bug fix. 1) Key features delivered: - Robust edge-case handling for slice(): negative length now throws a user-defined error (instead of returning an empty array), aligning with Presto Java behavior. 2) Major bugs fixed: - Negative length inputs now validated with a dedicated error path; aligns with Presto Java behavior. Commit: 0895a72fa08cb4ab5a47c5d3944623ca9e358da4 (#13411). 3) Overall impact and accomplishments: - Increased correctness and reliability of slice operations; reduced risk of silent failures and improved cross-engine parity, supporting more predictable query results for users migrating or integrating with Presto-based pipelines. 4) Technologies/skills demonstrated: - C++ Velox development, robust input validation, cross-language parity with Presto Java, code review and change management.
Activity
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Quality Metrics
Correctness93.4%
Maintainability93.4%
Architecture93.4%
Performance86.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++
Technical Skills
C++C++ DevelopmentConnector DevelopmentDatabase IntegrationError HandlingFunction RefactoringMetadata ManagementUnit Testing
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