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hu hengrui

PROFILE

Hu Hengrui

Worked on the apache/incubator-gluten repository to extend the TypeAwareCompress (TAC) codec with support for 128-bit integers, enabling efficient compression of DECIMAL and HUGEINT types common in OLAP workloads. Leveraged C++ to implement a split-stream FFOR encoding path, which improved both performance and space efficiency compared to existing methods. Enhanced the 64-bit FFOR decoder by introducing capacity checks to prevent out-of-bounds writes, aligning its safety with the new 128-bit path. Developed comprehensive unit and end-to-end tests to validate functionality and resilience. Focused on backend development, data compression, and security hardening, while also improving code quality and maintainability.

Overall Statistics

Feature vs Bugs

100%Features

Repository Contributions

1Total
Bugs
0
Commits
1
Features
1
Lines of code
643
Activity Months1

Work History

June 2026

1 Commits • 1 Features

Jun 1, 2026

June 2026 monthly work summary for apache/incubator-gluten focused on expanding the TAC codec to handle 128-bit integers (INT128/HUGEINT/DECIMAL) with a split-stream FFOR encoding path, hardening safety checks in the 64-bit FFOR decoder, and delivering comprehensive tests. The work targeted decimal-heavy OLAP workloads and produced measurable performance and space efficiency gains, along with code quality improvements.

Activity

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Quality Metrics

Correctness100.0%
Maintainability100.0%
Architecture100.0%
Performance100.0%
AI Usage100.0%

Skills & Technologies

Programming Languages

No languages yet

Technical Skills

Backend DevelopmentC++Data CompressionPerformance OptimizationSecurity Hardening

Repositories Contributed To

1 repo

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

apache/incubator-gluten

Jun 2026 Jun 2026
1 Month active

Languages Used

No languages

Technical Skills

Backend DevelopmentC++Data CompressionPerformance OptimizationSecurity Hardening