apache/shardingsphere
Feb 2026 – Mar 2026
2 Months active
Languages Used
JavaMarkdownYAML
Technical Skills
JavaJava DevelopmentSQLSQL ParsingUnit Testingdatabase management
ym0506
PROFILE
Ym0506
During two months contributing to apache/shardingsphere, Atat9828 focused on improving sharding reliability and developer experience. They enhanced the PostgreSQL parser in Java to correctly handle unary NOT expressions, preventing misrouting and ensuring accurate table extraction. For MySQL, they refined SQL metadata loading by filtering with TABLE_SCHEMA, increasing metadata accuracy. Atat9828 also authored detailed RAL syntax documentation in Markdown, supporting JSON metadata export and import. In March, they addressed HASH_MOD routing inconsistencies across numeric types and optimized the E2E-SQL CI workflow using GitHub Actions, reducing artifact size and improving reliability. Their work demonstrated depth in Java, SQL parsing, and CI/CD.
Overall Statistics
Feature vs Bugs
60%Features
Repository Contributions
5Total
Bugs
2
Commits
5
Features
3
Lines of code
537
Activity Months2
Your Network
1077 peopleWork History
March 2026
2 Commits • 1 Features
Mar 1, 2026Monthly summary for 2026-03 focused on delivering reliability and correctness improvements for the apache/shardingsphere project. Key work included fixing HASH_MOD routing correctness across numeric types and enhancing the E2E-SQL workflow reliability and efficiency. Commits referenced: 88f305a0a598da754f15884dc991672b5ff74ac8 (Fix HASH_MOD routing mismatch for same negative numeric value; add compatibility switch for numeric normalization) and 9ba3ce947ffaffbbf457e8ebfb19d146b8a167c8 (Fix intermittent checkout ref failures; refine e2e-sql checkout ref selection; reuse source snapshot; reduce artifact size). Business impact emphasizes correct routing for negative numeric values, consistent behavior across numeric types, and more efficient, reliable end-to-end validation with smaller CI artifacts.
2 Commits • 1 Features
Mar 1, 2026Monthly summary for 2026-03 focused on delivering reliability and correctness improvements for the apache/shardingsphere project. Key work included fixing HASH_MOD routing correctness across numeric types and enhancing the E2E-SQL workflow reliability and efficiency. Commits referenced: 88f305a0a598da754f15884dc991672b5ff74ac8 (Fix HASH_MOD routing mismatch for same negative numeric value; add compatibility switch for numeric normalization) and 9ba3ce947ffaffbbf457e8ebfb19d146b8a167c8 (Fix intermittent checkout ref failures; refine e2e-sql checkout ref selection; reuse source snapshot; reduce artifact size). Business impact emphasizes correct routing for negative numeric values, consistent behavior across numeric types, and more efficient, reliable end-to-end validation with smaller CI artifacts.
March 2026
February 2026
3 Commits • 2 Features
Feb 1, 2026February 2026: Focused on correctness, metadata accuracy, and developer onboarding. Achievements include parser correctness fixes that prevent misrouting, more accurate metadata loading for MySQL, and new RAL/JSON metadata documentation, collectively increasing sharding reliability, reducing backend churn, and improving operator visibility.
February 2026
3 Commits • 2 Features
Feb 1, 2026February 2026: Focused on correctness, metadata accuracy, and developer onboarding. Achievements include parser correctness fixes that prevent misrouting, more accurate metadata loading for MySQL, and new RAL/JSON metadata documentation, collectively increasing sharding reliability, reducing backend churn, and improving operator visibility.
Activity
Loading activity data...
Quality Metrics
Correctness96.0%
Maintainability84.0%
Architecture84.0%
Performance84.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
JavaMarkdownYAML
Technical Skills
CI/CDDevOpsGitHub ActionsJavaJava DevelopmentSQLSQL ParsingSharding AlgorithmsUnit Testingdatabase managementdocumentation
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline