crossoverJie/starrocks
Feb 2025 – Jun 2025
4 Months active
Languages Used
JavaC++Thrift
Technical Skills
Backend DevelopmentBug FixJDBCSQL ParsingTrinoC++ Development
miomiocat
PROFILE
Miomiocat
Over four months, this developer contributed to the crossoverJie/starrocks repository, focusing on backend reliability and data compatibility. They enhanced SQL parsing and JDBC integration using Java and C++, addressing NullPointerExceptions and expanding syntax support for AT TIME ZONE expressions. Their work on data lake connectors improved schema evolution handling for Hive, Iceberg, and Paimon, refactoring scanners and updating Parquet readers for robust cross-system analytics. They also resolved data type compatibility issues in Hudi and Paimon integrations, implemented rigorous unit testing, and fixed hash code collisions in predicate-based indexing. The developer demonstrated depth in code refactoring, data structures, and backend testing.
Overall Statistics
Feature vs Bugs
43%Features
Repository Contributions
7Total
Bugs
4
Commits
7
Features
3
Lines of code
1,283
Activity Months4
Your Network
46 people
Work History
June 2025
1 Commits
Jun 1, 2025June 2025 monthly summary for crossoverJie/starrocks highlighting key developer contributions and outcomes. Focused on delivering stable, business-value improvements and demonstrating solid technical craftsmanship.
1 Commits
Jun 1, 2025June 2025 monthly summary for crossoverJie/starrocks highlighting key developer contributions and outcomes. Focused on delivering stable, business-value improvements and demonstrating solid technical craftsmanship.
June 2025
April 2025
2 Commits • 1 Features
Apr 1, 2025In Apr 2025, delivered key features and fixes in crossoverJie/starrocks, focusing on data type compatibility, Materialized View reliability, and data ingestion correctness. Implemented Paimon TIME data type support with a converter, JNI scanner updates, and MV identification refactor to improve compatibility and MV stability. Fixed Hudi slice reader varchar type handling, updated ColumnType mappings for varchar/char, and added test coverage for the Hudi slice scanner to prevent regressions. These changes enhance data accuracy in cross-system data flows and strengthen business analytics readiness. Technologies demonstrated include JNI, data type conversion, MV management, and test-driven development.
April 2025
2 Commits • 1 Features
Apr 1, 2025In Apr 2025, delivered key features and fixes in crossoverJie/starrocks, focusing on data type compatibility, Materialized View reliability, and data ingestion correctness. Implemented Paimon TIME data type support with a converter, JNI scanner updates, and MV identification refactor to improve compatibility and MV stability. Fixed Hudi slice reader varchar type handling, updated ColumnType mappings for varchar/char, and added test coverage for the Hudi slice scanner to prevent regressions. These changes enhance data accuracy in cross-system data flows and strengthen business analytics readiness. Technologies demonstrated include JNI, data type conversion, MV management, and test-driven development.
March 2025
2 Commits • 1 Features
Mar 1, 2025March 2025 performance highlights for crossoverJie/starrocks: Delivered reliability and compatibility enhancements across the Hive/Iceberg/Paimon stack, emphasizing business value through reduced runtime errors and improved schema evolution support. Implemented a critical Cache Select Scanner bug fix with test coverage, enabled Paimon schema retrieval in Hive, and refactored the HDFS scanner to a generic lake_schema approach with Parquet reader/meta helpers updated for Iceberg/Paimon schema evolution. These changes improve stability, cross-system interoperability, and readiness for evolving data lake schemas.
2 Commits • 1 Features
Mar 1, 2025March 2025 performance highlights for crossoverJie/starrocks: Delivered reliability and compatibility enhancements across the Hive/Iceberg/Paimon stack, emphasizing business value through reduced runtime errors and improved schema evolution support. Implemented a critical Cache Select Scanner bug fix with test coverage, enabled Paimon schema retrieval in Hive, and refactored the HDFS scanner to a generic lake_schema approach with Parquet reader/meta helpers updated for Iceberg/Paimon schema evolution. These changes improve stability, cross-system interoperability, and readiness for evolving data lake schemas.
March 2025
February 2025
2 Commits • 1 Features
Feb 1, 2025February 2025: Consolidated release work for the crossoverJie/starrocks repo focused on robustness and parser coverage. Delivered a critical bug fix for an NPE in AstToStringBuilder when handling CAST filter conditions with JDBC sources, and added parsing support for AT TIME ZONE expressions in the Trino parser. These changes improve query analysis reliability for JDBC-backed sources and broaden SQL syntax support, reinforced by updated tests.
February 2025
2 Commits • 1 Features
Feb 1, 2025February 2025: Consolidated release work for the crossoverJie/starrocks repo focused on robustness and parser coverage. Delivered a critical bug fix for an NPE in AstToStringBuilder when handling CAST filter conditions with JDBC sources, and added parsing support for AT TIME ZONE expressions in the Trino parser. These changes improve query analysis reliability for JDBC-backed sources and broaden SQL syntax support, reinforced by updated tests.
Activity
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Quality Metrics
Correctness84.2%
Maintainability82.8%
Architecture81.4%
Performance71.4%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++JavaThrift
Technical Skills
Backend DevelopmentBug FixC++ DevelopmentCode RefactoringConnector DevelopmentData LakeData ReadingData StructuresData Type HandlingDatabaseDatabase ConnectorsHashingHudiJDBCJava Development
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