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PROFILE

Kk

During a two-month period, Pufan contributed to the StarRocks project by addressing both reliability and flexibility in backend data processing. In the pinterest/starrocks repository, Pufan fixed a materialized view refresh issue, ensuring partition information was correctly managed across multiple tables, which improved downstream analytics accuracy and reduced data staleness. The solution emphasized robust Java backend development and thorough unit testing. The following month, in crossoverJie/starrocks, Pufan enhanced the SQL engine by enabling the IN expression to cast and compare date and string types, expanding query capabilities for date-based analytics and simplifying user queries through improved SQL flexibility.

Overall Statistics

Feature vs Bugs

50%Features

Repository Contributions

2Total
Bugs
1
Commits
2
Features
1
Lines of code
128
Activity Months2

Work History

February 2026

1 Commits • 1 Features

Feb 1, 2026

February 2026: Delivered a focused enhancement to the SQL engine in crossoverJie/starrocks, enabling the IN expression to cast and compare date and string types. This extends query flexibility for date-related analytics, simplifies ad-hoc querying, and supports broader data scenarios. Implemented via commit 94c49ffe5ccd198a31df307847c7b2eb531cdcb2 with a signed-off contribution. No major bugs reported or fixed this month; maintenance focused on code quality and alignment with roadmap.

January 2026

1 Commits

Jan 1, 2026

January 2026: Key deliverable was a bug fix for Materialized View refresh correctness across multiple tables, ensuring per-table partition information is correctly managed. The fix improves analytics accuracy and reliability downstream, reducing data stale issues. Implemented in commit 15c86a8bdc3337a6b0d95df7387f6ca6c5406ac4 (#61763) with a signed-off change by pufan, showcasing partition-aware data engineering, robust testing, and strong code-quality discipline.

Activity

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Quality Metrics

Correctness90.0%
Maintainability80.0%
Architecture80.0%
Performance80.0%
AI Usage30.0%

Skills & Technologies

Programming Languages

Java

Technical Skills

JavaSQLTestingbackend developmentunit testing

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

pinterest/starrocks

Jan 2026 Jan 2026
1 Month active

Languages Used

Java

Technical Skills

Javabackend developmentunit testing

crossoverJie/starrocks

Feb 2026 Feb 2026
1 Month active

Languages Used

Java

Technical Skills

JavaSQLTesting