NationalSecurityAgency/datawave
Mar 2025 – Dec 2025
2 Months active
Languages Used
Java
Technical Skills
Backend DevelopmentCachingJavaAnnotation SystemsData ManagementProtobuf
d-hwang
PROFILE
D-hwang
Chunha worked on the NationalSecurityAgency/datawave repository, where he developed a new annotation system supporting timestamp and visibility transformers, along with serialization and deserialization of annotations and their sources. This system enhanced metadata management and enabled tighter integration with Accumulo storage, laying the foundation for improved data provenance and access control. Chunha also addressed a critical caching issue by refining the Query Model cache key to account for evaluation-only fields, ensuring correct model retrieval and reducing cache-related errors. His work demonstrated depth in backend development, annotation systems, and caching, utilizing Java and Protobuf to deliver robust, maintainable solutions.
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
19 people
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
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Quality Metrics
Correctness90.0%
Maintainability90.0%
Architecture90.0%
Performance90.0%
AI Usage40.0%
Skills & Technologies
Programming Languages
Java
Technical Skills
Annotation SystemsBackend DevelopmentCachingData ManagementJavaProtobuf
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