pinterest/starrocks
Jan 2026 – Jan 2026
1 Month active
Languages Used
Java
Technical Skills
Data OptimizationData ProcessingData StructuresDatabase ManagementJavaJava Development
farhad-celo
PROFILE
Farhad-celo
Farhad Shahmohammadi contributed to the StarRocks/starrocks repository by developing performance-focused features over a two-month period. He implemented dictification optimizations for UNION ALL queries and struct data types, enhancing SQL query efficiency and scalability by improving support for low cardinality data and structured types. In addition, Farhad delivered low-cardinality optimization for the ARRAY_AGG function, reducing memory usage and improving aggregation performance. His work involved Java and SQL, with a strong emphasis on data processing, database management, and backend development. All changes were validated through code review and testing, reflecting a methodical approach to maintainability and backward compatibility.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
4Total
Bugs
0
Commits
4
Features
3
Lines of code
5,361
Activity Months2
Your Network
188 peopleSame Organization
@celonis.com12
Deng LiuMember
Dominik MünchMember
Elmi AhmadovMember
Joel DiazMember
Magzhan AbdibayevMember
Qendrim MucolliMember
Simon GriebelMember
s-jaffe-celonisMember
Siqi LingMember
Shared Repositories
176
Work History
February 2026
1 Commits • 1 Features
Feb 1, 2026February 2026 monthly summary for StarRocks/starrocks: Delivered ARRAY_AGG Low-Cardinality Optimization (Dictification) to optimize aggregations by introducing dictification for low-cardinality inputs, improving performance and memory efficiency. The change was implemented as an enhancement (referenced as #68842) and committed by Farhad Shahmohammadi. Focused on performance and scalability with minimal API impact, and validated through targeted testing to ensure backward compatibility.
1 Commits • 1 Features
Feb 1, 2026February 2026 monthly summary for StarRocks/starrocks: Delivered ARRAY_AGG Low-Cardinality Optimization (Dictification) to optimize aggregations by introducing dictification for low-cardinality inputs, improving performance and memory efficiency. The change was implemented as an enhancement (referenced as #68842) and committed by Farhad Shahmohammadi. Focused on performance and scalability with minimal API impact, and validated through targeted testing to ensure backward compatibility.
February 2026
January 2026
3 Commits • 2 Features
Jan 1, 2026January 2026 performance-focused monthly summary for pinterest/starrocks. Focused on delivering performance-oriented dictification enhancements to expand optimization coverage, with contributions to UNION ALL queries and struct data types. No explicit bug fixes were reported in this month; primary work targeted efficiency, scalability, and maintainability.
January 2026
3 Commits • 2 Features
Jan 1, 2026January 2026 performance-focused monthly summary for pinterest/starrocks. Focused on delivering performance-oriented dictification enhancements to expand optimization coverage, with contributions to UNION ALL queries and struct data types. No explicit bug fixes were reported in this month; primary work targeted efficiency, scalability, and maintainability.
Activity
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Quality Metrics
Correctness85.0%
Maintainability80.0%
Architecture85.0%
Performance85.0%
AI Usage55.0%
Skills & Technologies
Programming Languages
Java
Technical Skills
Data OptimizationData ProcessingData StructuresDatabase ManagementJavaJava DevelopmentSQLSQL Optimizationback end developmentdata optimization
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline
StarRocks/starrocks
Feb 2026 – Feb 2026
1 Month active
Languages Used
Java
Technical Skills
SQLback end developmentdata optimization