apache/doris
Dec 2024 – Dec 2024
1 Month active
Languages Used
Java
Technical Skills
Backend DevelopmentDatabase Management
TsukiokaKogane
PROFILE
Tsukiokakogane
During a two-month period, Cby focused on backend bug fixes in large-scale database systems, contributing to both the apache/doris and crossoverJie/starrocks repositories. In Doris, Cby addressed a correctness issue in DDL/type handling by ensuring the resultType for column definitions, such as VARCHAR, was accurately applied, reducing schema drift and improving DDL/CTAS reliability. In StarRocks, Cby resolved a bug in SQL short-circuit execution, updating schema conversion logic to use reordered value column IDs and preserve data integrity. These targeted changes, implemented in C++ and Java, demonstrated careful analysis and precise code modifications to enhance database stability and correctness.
Overall Statistics
Feature vs Bugs
0%Features
Repository Contributions
2Total
Bugs
2
Commits
2
Features
0
Lines of code
0
Activity Months2
Your Network
156 peopleWork History
July 2025
1 Commits
Jul 1, 20252025-07 monthly summary for crossoverJie/starrocks: Focused on correctness improvements in the SQL execution path. Delivered a targeted bug fix for short-circuit execution with out-of-order value columns, ensuring schema conversion uses the reordered value column IDs to preserve data integrity and produce correct results. The work improves reliability of queries under reordered schemas and reduces edge-case risk in production.
1 Commits
Jul 1, 20252025-07 monthly summary for crossoverJie/starrocks: Focused on correctness improvements in the SQL execution path. Delivered a targeted bug fix for short-circuit execution with out-of-order value columns, ensuring schema conversion uses the reordered value column IDs to preserve data integrity and produce correct results. The work improves reliability of queries under reordered schemas and reduces edge-case risk in production.
July 2025
December 2024
1 Commits
Dec 1, 2024December 2024 monthly summary for apache/doris focused on targeted correctness improvements in DDL/type handling. A bug was fixed in the Column Definition ResultType path that previously allowed an incorrect resultType to be applied to column type definitions, risking unintended changes for types such as VARCHAR. The fix was implemented in the CTAS workflow and merged under commit 04e58bc531bd401b0000463b2e930b7f1a37b7d1 (related to issue #43828). This change enhances schema accuracy and stability for DDL/CTAS operations, reducing risk of schema drift.
December 2024
1 Commits
Dec 1, 2024December 2024 monthly summary for apache/doris focused on targeted correctness improvements in DDL/type handling. A bug was fixed in the Column Definition ResultType path that previously allowed an incorrect resultType to be applied to column type definitions, risking unintended changes for types such as VARCHAR. The fix was implemented in the CTAS workflow and merged under commit 04e58bc531bd401b0000463b2e930b7f1a37b7d1 (related to issue #43828). This change enhances schema accuracy and stability for DDL/CTAS operations, reducing risk of schema drift.
Activity
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Quality Metrics
Correctness80.0%
Maintainability90.0%
Architecture70.0%
Performance80.0%
AI Usage30.0%
Skills & Technologies
Programming Languages
C++Java
Technical Skills
Backend DevelopmentBug FixDatabaseDatabase ManagementSQL
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline
crossoverJie/starrocks
Jul 2025 – Jul 2025
1 Month active
Languages Used
C++
Technical Skills
Bug FixDatabaseSQL