apache/shardingsphere
Feb 2026 – Mar 2026
2 Months active
Languages Used
JavaMarkdownYAML
Technical Skills
JavaJava DevelopmentSQLSQL ParsingUnit Testingdatabase management
ym0506
PROFILE
Ym0506
Worked on the apache/shardingsphere repository to enhance sharding reliability and developer experience by improving SQL parsing, metadata accuracy, and workflow efficiency. Addressed parser correctness for PostgreSQL by preserving unary NOT expressions, ensuring accurate table extraction and logical naming in sharding scenarios. Improved MySQL metadata loading by filtering queries with TABLE_SCHEMA, increasing precision for constraints and views. Authored documentation for JSON metadata export and import, supporting developer onboarding. Fixed routing mismatches in the HASH_MOD algorithm for negative numeric values and optimized E2E-SQL workflows, reducing artifact size and improving CI reliability. Utilized Java, SQL, and GitHub Actions throughout these contributions.
Overall Statistics
Feature vs Bugs
60%Features
Repository Contributions
5Total
Bugs
2
Commits
5
Features
3
Lines of code
537
Activity Months2
Your Network
1172 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
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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
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