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deardeng

PROFILE

Deardeng

Over six months, this developer enhanced Apache Doris and its website repository by building and documenting features that improved cloud balancing, compute group management, and storage configuration. They implemented cloud balancing and cache synchronization logic in C++ and Java, refining backend/frontend coordination for safer migrations and more reliable distributed state management. Their work included permission model validation and test-driven development to ensure correct compute group behavior. Through detailed technical writing and documentation in Markdown, they clarified complex features such as dynamic partition migration and auto bucket logic, reducing onboarding friction and support load while enabling safer scaling and operational clarity for users.

Overall Statistics

Feature vs Bugs

86%Features

Repository Contributions

8Total
Bugs
1
Commits
8
Features
6
Lines of code
5,978
Activity Months6

Your Network

199 people

Work History

December 2025

1 Commits • 1 Features

Dec 1, 2025

December 2025 monthly summary focusing on delivering documentation for Doris cloud rebalance to improve scaling reliability and onboarding. Key impact includes clearer load balancing guidance for compute groups post-scaling, traceable documentation commits, and a measurable improvement in operational clarity for engineers. No major code changes or bug fixes were required this month; the emphasis was on documentation quality and process improvements that enable safer cloud scaling and faster deployment cycles.

October 2025

3 Commits • 1 Features

Oct 1, 2025

Month: 2025-10 – Apache Doris (apache/doris) Key features delivered: - Cloud Balancing and Cache Synchronization Enhancements: Implemented pre-migration file cache completion safeguard for backend mappings and enabled reading peer backend caches during tablet balancing to improve reliability and efficiency in cloud balancing. Introduced a cloud balance warm-up flow so FE mappings are updated only after all file caches from the old BE are migrated. Addressed edge-case where the destination BE cache could lag synchronization, reducing error scenarios during balance operations. Commits: 7e0503b895447794bcce51644a8c10abc160ef79; ee6480fb2f508a8091d4f872b640ec7df6b71963. - Compute Group Permission Check Correctness: Fixed an equality-based membership check for regular compute groups within virtual compute groups and added tests to ensure correct permission behavior. Commit: 60fd56c04a698fd73a3f1a02494d48a230168e8f. Major impact and accomplishments: - Increased cloud-balancing reliability and efficiency, with safer cache migration sequencing and improved cache visibility across cluster peers. - Improved security posture and correctness of permission modeling for compute groups, supported by regression tests. Technologies and skills demonstrated: - Cloud balancing architecture, cache synchronization, and distributed state management - Backend/frontend coordination for safe migrations and cache handling - Permission model validation and test-driven development - End-to-end traceability with commit-level context to support audits and reviews

June 2025

1 Commits • 1 Features

Jun 1, 2025

June 2025: Delivered documentation and logic refinements for the Auto bucket feature on apache/doris-website, including clarification of estimate_partition_size and adjustment of the recommended Tablet size range. Refined the initial bucket calculation to account for different deployment architectures and introduced a configurable FE parameter. Implemented a targeted bug fix to align partition size estimation with a single bucket across environments.

March 2025

1 Commits • 1 Features

Mar 1, 2025

March 2025: Delivered the Compute Group Rename Command for Doris with end-to-end documentation and localization, enabling rename of compute groups via ALTER SYSTEM RENAME COMPUTE GROUP. This work improves cluster manageability and operational efficiency for Doris deployments.

December 2024

1 Commits • 1 Features

Dec 1, 2024

December 2024: Delivered Compute Group Management Documentation Enhancements in the Doris website repo (apache/doris-website). Clarified compute group usage scenarios (read-read, read-write, write-write isolation), default compute group behavior, and end-to-end access workflows (view/add/grant/revoke, set default). The work was implemented via a single commit (c93755ebff976c004c97a9541aaa700207ae4de9) as part of cloud doc updates (#1508). Impact includes improved developer onboarding, reduced support queries, and better alignment with cloud compute capabilities. Demonstrated strengths in documentation quality, version control discipline, and cross-team collaboration.

October 2024

1 Commits • 1 Features

Oct 1, 2024

Monthly work summary for 2024-10 focused on delivering high-value documentation enhancements for Apache Doris. The work improves user guidance around dynamic partition migration, tiered storage concepts (SSD/HDD), and remote storage configurations (S3/HDFS), enabling better data layout decisions and storage management. No major bugs fixed this month; emphasis was on documentation quality, traceability, and reducing support load by improving user onboarding and self-service guidance.

Activity

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Quality Metrics

Correctness92.4%
Maintainability90.0%
Architecture87.6%
Performance87.6%
AI Usage30.0%

Skills & Technologies

Programming Languages

C++GroovyJavaMarkdown

Technical Skills

C++C++ programmingDocumentationGroovy scriptingJavaJava programmingTechnical Writingbackend developmentcloud architecturecloud computingdocumentationtechnical writingunit testing

Repositories Contributed To

2 repos

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

apache/doris-website

Oct 2024 Dec 2025
5 Months active

Languages Used

Markdown

Technical Skills

DocumentationTechnical Writingcloud architecturedocumentationtechnical writing

apache/doris

Oct 2025 Oct 2025
1 Month active

Languages Used

C++GroovyJava

Technical Skills

C++C++ programmingGroovy scriptingJavaJava programmingbackend development