NationalSecurityAgency/datawave
Mar 2025 – Dec 2025
2 Months active
Languages Used
Java
Technical Skills
Backend DevelopmentCachingJavaAnnotation SystemsData ManagementProtobuf
d-hwang
PROFILE
D-hwang
Worked on the NationalSecurityAgency/datawave repository, delivering a new annotation system that manages metadata with timestamp and visibility transformers, supporting serialization and deserialization for integration with Accumulo storage. This feature improved data provenance and auditability by enabling end-to-end tracking of annotations and their sources, and laid the foundation for metadata-driven access control. Additionally, addressed a critical caching issue by refining the Query Model cache key to include evaluation-only fields, ensuring correct model retrieval and enhancing reliability. The work demonstrated depth in backend development, data management, and caching, utilizing Java and Protobuf to improve both feature robustness and system correctness.
Overall Statistics
Feature vs Bugs
50%Features
Repository Contributions
2Total
Bugs
1
Commits
2
Features
1
Lines of code
36,582
Activity Months2
Your Network
20 peopleShared Repositories
20
Work History
December 2025
1 Commits • 1 Features
Dec 1, 2025December 2025 — NationalSecurityAgency/datawave: Delivered a new Datawave Annotation System with Timestamp/Visibility Transformers and Serialization, enabling robust metadata management and tighter integration with Accumulo storage. The work includes end-to-end serialization/deserialization of annotations and their sources, improving provenance and governance, and was aligned with mainline via a rebase to Version7.29 (#3306).
1 Commits • 1 Features
Dec 1, 2025December 2025 — NationalSecurityAgency/datawave: Delivered a new Datawave Annotation System with Timestamp/Visibility Transformers and Serialization, enabling robust metadata management and tighter integration with Accumulo storage. The work includes end-to-end serialization/deserialization of annotations and their sources, improving provenance and governance, and was aligned with mainline via a rebase to Version7.29 (#3306).
December 2025
March 2025
1 Commits
Mar 1, 2025In March 2025, addressed a critical correctness issue in the datawave query caching mechanism by refining the Query Model cache key to include evaluationOnlyFields, ensuring distinct cache entries for different evaluation-only field sets and preventing incorrect model retrieval. No new features shipped this month; the fix improves reliability and accuracy of query results and reduces cache-related bugs in production.
March 2025
1 Commits
Mar 1, 2025In March 2025, addressed a critical correctness issue in the datawave query caching mechanism by refining the Query Model cache key to include evaluationOnlyFields, ensuring distinct cache entries for different evaluation-only field sets and preventing incorrect model retrieval. No new features shipped this month; the fix improves reliability and accuracy of query results and reduces cache-related bugs in production.
Activity
Loading activity data...
Quality Metrics
Correctness90.0%
Maintainability90.0%
Architecture90.0%
Performance90.0%
AI Usage40.0%
Skills & Technologies
Programming Languages
Java
Technical Skills
Annotation SystemsBackend DevelopmentCachingData ManagementJavaProtobuf
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline