juicedata/juicefs
Dec 2024 – Jan 2026
5 Months active
Languages Used
JavaGoMarkdown
Technical Skills
Configuration ManagementFile SystemFile SystemsMount OptionsSystem ProgrammingUser Permissions
kyungwan-nam
PROFILE
Kyungwan-nam
Worked on the juicedata/juicefs repository, delivering features that enhanced file system security, access control, and quota visibility for enterprise storage environments. Focused on Go and Java, the work included implementing configurable umask and mount permission options, introducing all-squash and multi-subdirectory access controls, and exposing quota information across both Go and Java SDKs. Emphasis was placed on configuration management, system programming, and robust testing to ensure reliable permission handling and operational consistency. Documentation and SDK updates clarified configuration options and improved user guidance, while new access control features enabled more granular, flexible management of user permissions in Hadoop deployments.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
6Total
Bugs
0
Commits
6
Features
6
Lines of code
430
Activity Months5
Your Network
101 peopleSame Organization
@navercorp.com37
Shared Repositories
64
WenjieMember
Zhitao LiMember
自然选择Member
FrancisMember
T-TRz879Member
JiapengMember
刘政Member
Fangxin LouMember
JIN TongMember
Work History
January 2026
1 Commits • 1 Features
Jan 1, 2026Month: 2026-01 | This month focused on enhancing Hadoop-based access control within JuiceFS by extending the Hadoop SDK to support multiple subdirectories, improving security, flexibility, and reliability for large-scale Hadoop deployments.
1 Commits • 1 Features
Jan 1, 2026Month: 2026-01 | This month focused on enhancing Hadoop-based access control within JuiceFS by extending the Hadoop SDK to support multiple subdirectories, improving security, flexibility, and reliability for large-scale Hadoop deployments.
January 2026
May 2025
2 Commits • 2 Features
May 1, 2025Monthly summary for 2025-05: Delivered two Hadoop SDK enhancements for JuiceFS, including a new subdir access control option with tests and updated docs, and clarified cache configuration guidance in Java SDK docs. No major bugs fixed this month; the work emphasizes business value through feature delivery, testing, and documentation.
May 2025
2 Commits • 2 Features
May 1, 2025Monthly summary for 2025-05: Delivered two Hadoop SDK enhancements for JuiceFS, including a new subdir access control option with tests and updated docs, and clarified cache configuration guidance in Java SDK docs. No major bugs fixed this month; the work emphasizes business value through feature delivery, testing, and documentation.
April 2025
1 Commits • 1 Features
Apr 1, 2025April 2025 monthly summary for juicedata/juicefs focused on quota visibility and cross-language interface consistency. Implemented quota exposure end-to-end, enabling users to view quota (maximum space and inodes) directly from the File struct (GetQuota) and ensuring these details are surfaced in the Java SDK and JuiceFS Java integration (JuiceFileSystemImpl and jfs_summary). This work aligns with Hadoop compatibility goals by enabling quota visibility in Hadoop commands, addressing the gap noted in (#5939). Resulting changes improve capacity planning, reduce manual checks, and provide a stable foundation for quota-based policies across Go and Java components. Technologies/skills demonstrated: Go API design (File.GetQuota), Java SDK integration (jfs_summary, JuiceFileSystemImpl), cross-language interface consistency, API surface alignment, and performance/reliability considerations for quota reporting.
1 Commits • 1 Features
Apr 1, 2025April 2025 monthly summary for juicedata/juicefs focused on quota visibility and cross-language interface consistency. Implemented quota exposure end-to-end, enabling users to view quota (maximum space and inodes) directly from the File struct (GetQuota) and ensuring these details are surfaced in the Java SDK and JuiceFS Java integration (JuiceFileSystemImpl and jfs_summary). This work aligns with Hadoop compatibility goals by enabling quota visibility in Hadoop commands, addressing the gap noted in (#5939). Resulting changes improve capacity planning, reduce manual checks, and provide a stable foundation for quota-based policies across Go and Java components. Technologies/skills demonstrated: Go API design (File.GetQuota), Java SDK integration (jfs_summary, JuiceFileSystemImpl), cross-language interface consistency, API surface alignment, and performance/reliability considerations for quota reporting.
April 2025
January 2025
1 Commits • 1 Features
Jan 1, 2025January 2025 monthly summary for juicedata/juicefs: Focused on expanding mount permission controls to support multi-tenant workloads and reduce admin toil. Delivered a new all-squash mount option, refactored permission handling into an AnonymousAccount model, and added UID/GID parsing helpers and default 'nobody' user retrieval. This work centers on improving security, flexibility, and operability of mount operations while enabling safer defaults for diverse environments.
January 2025
1 Commits • 1 Features
Jan 1, 2025January 2025 monthly summary for juicedata/juicefs: Focused on expanding mount permission controls to support multi-tenant workloads and reduce admin toil. Delivered a new all-squash mount option, refactored permission handling into an AnonymousAccount model, and added UID/GID parsing helpers and default 'nobody' user retrieval. This work centers on improving security, flexibility, and operability of mount operations while enabling safer defaults for diverse environments.
December 2024
1 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary focused on key accomplishments, feature delivery, and business impact for the JuiceFS project. This period centered on implementing permission controls to improve security, predictability, and operational consistency across deployments.
1 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary focused on key accomplishments, feature delivery, and business impact for the JuiceFS project. This period centered on implementing permission controls to improve security, predictability, and operational consistency across deployments.
December 2024
Activity
Loading activity data...
Quality Metrics
Correctness93.4%
Maintainability86.6%
Architecture91.6%
Performance80.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
GoJavaMarkdown
Technical Skills
API DevelopmentAccess ControlConfiguration ManagementDocumentationFile SystemFile SystemsGoHadoopJavaMount OptionsSDK DevelopmentSystem ProgrammingTestingUser Permissionsconfiguration management
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline