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Minni Mittal

PROFILE

Minni Mittal

Over a two-month period, this developer contributed core data processing features to the facebookincubator/velox and apache/incubator-gluten repositories, focusing on Spark integration and backend enhancements. They implemented aggregate and scalar functions such as bitmap_or_agg for efficient count-distinct analytics, format_number for locale-aware numeric formatting, and regexp_instr for regex-based string indexing. Using C++, Spark SQL, and advanced templating, they ensured robust input validation, optimized memory usage, and thorough test coverage. Their work included maintainability improvements, reusable utilities, and compatibility across Spark versions, directly improving performance, scalability, and data quality in large-scale Spark workloads without introducing new bugs during the period.

Overall Statistics

Feature vs Bugs

100%Features

Repository Contributions

5Total
Bugs
0
Commits
5
Features
5
Lines of code
2,334
Activity Months2

Work History

June 2026

4 Commits • 4 Features

Jun 1, 2026

June 2026 performance summary across Velox and Gluten: Delivered core Spark integration enhancements (locale-aware numeric formatting, regex indexing, decimal rounding) and native execution improvements (bitmap_construct_agg) that directly impact data quality, presentation, and runtime performance. Demonstrated advanced C++ templating, high-performance formatting, RE2 regex, and Velox-native plan integration, with broad Spark-version compatibility and thorough testing.

May 2026

1 Commits • 1 Features

May 1, 2026

May 2026 monthly summary for facebookincubator/velox. This period centered on delivering a high-value feature for Spark integration, validating it with comprehensive test coverage, and laying groundwork for maintainability and future improvements. No major bug fixes were reported this month; the focus was feature completion, validation, and readiness for production use.

Activity

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Quality Metrics

Correctness96.0%
Maintainability84.0%
Architecture96.0%
Performance88.0%
AI Usage32.0%

Skills & Technologies

Programming Languages

C++MarkdownPythonSQLScala

Technical Skills

Aggregate FunctionsC++C++ DevelopmentC++ developmentData ProcessingDatabase ManagementFunction implementationRegexSparkSpark SQLTestingUnit testingVeloxbackend developmenttesting

Repositories Contributed To

2 repos

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

facebookincubator/velox

May 2026 Jun 2026
2 Months active

Languages Used

C++MarkdownPythonSQL

Technical Skills

Aggregate FunctionsC++Data ProcessingSparkC++ DevelopmentC++ development

apache/incubator-gluten

Jun 2026 Jun 2026
1 Month active

Languages Used

C++Scala

Technical Skills

SparkVeloxbackend developmenttesting