apache/doris
Dec 2025 – Apr 2026
2 Months active
Languages Used
C++JavaSQL
Technical Skills
C++C++ programmingJavabackend developmentdata aggregationdatabase development
Jover
PROFILE
Jover
Worked on enhancing Apache Doris by implementing advanced regression analysis capabilities directly within SQL aggregate functions. Leveraging C++, Java, and SQL, the developer unified regression logic using the Youngs-Cramer algorithm, enabling accurate calculation of regression slope, intercept, and related statistics. This approach consolidated multiple regression functions onto a shared code path, improving maintainability and aligning Doris semantics with PostgreSQL for analytics interoperability. Additionally, comprehensive documentation was delivered in both English and Chinese, supporting broader adoption. The work spanned both the core apache/doris repository and its documentation site, demonstrating strong backend development, data aggregation, and statistical analysis skills throughout the project.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
4Total
Bugs
0
Commits
4
Features
3
Lines of code
6,135
Activity Months2
Your Network
218 peopleShared Repositories
218
Work History
April 2026
2 Commits • 2 Features
Apr 1, 2026Concise monthly summary for 2026-04 focusing on delivering regression analytics capabilities in Doris and corresponding documentation. The month centered on finishing core feature delivery for regression aggregate functions and aligning website docs to enhance usability and adoption across data teams.
2 Commits • 2 Features
Apr 1, 2026Concise monthly summary for 2026-04 focusing on delivering regression analytics capabilities in Doris and corresponding documentation. The month centered on finishing core feature delivery for regression aggregate functions and aligning website docs to enhance usability and adoption across data teams.
April 2026
December 2025
2 Commits • 1 Features
Dec 1, 2025December 2025 monthly summary for Apache Doris development focusing on regression analysis capabilities in aggregate functions. Implemented a Youngs-Cramer based regression for REGR_SLOPE and REGR_INTERCEPT, aligning semantics with PostgreSQL. Unified the regression state and logic for regr_sxx, regr_syy, and regr_sxy onto a shared AggregateFunctionRegrData path, enabling reuse across all REGR_* variants (SXX, SYY, SXY, R2, etc.). Improved maintainability and testability by consolidating regression code, and enhanced analytics interoperability for downstream business metrics.
December 2025
2 Commits • 1 Features
Dec 1, 2025December 2025 monthly summary for Apache Doris development focusing on regression analysis capabilities in aggregate functions. Implemented a Youngs-Cramer based regression for REGR_SLOPE and REGR_INTERCEPT, aligning semantics with PostgreSQL. Unified the regression state and logic for regr_sxx, regr_syy, and regr_sxy onto a shared AggregateFunctionRegrData path, enabling reuse across all REGR_* variants (SXX, SYY, SXY, R2, etc.). Improved maintainability and testability by consolidating regression code, and enhanced analytics interoperability for downstream business metrics.
Activity
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Quality Metrics
Correctness100.0%
Maintainability90.0%
Architecture100.0%
Performance90.0%
AI Usage45.0%
Skills & Technologies
Programming Languages
C++JavaMarkdownSQL
Technical Skills
C++C++ programmingJavaJava programmingSQLbackend developmentdata aggregationdata analysisdatabase developmentdocumentationstatistical analysisstatistical functions
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline
apache/doris-website
Apr 2026 – Apr 2026
1 Month active
Languages Used
MarkdownSQL
Technical Skills
SQLdata analysisdocumentationstatistical functions