apache/beam
Mar 2026 – Mar 2026
1 Month active
Languages Used
Go
Technical Skills
Go SDK developmentIntegration testingState managementUnit testing
Hannes Gustafsson
PROFILE
Hannes Gustafsson
In March 2026, Hans Gustafsson developed the OrderedListState feature for the apache/beam repository, enhancing the Go SDK’s stateful DoFn API to support ordered-key state management. He implemented the state.OrderedList type with methods for adding, reading, and clearing elements using int64 sort keys, aligning Go’s capabilities with those in Java and Python. Hans integrated the provider through exec, graphx translate, and the harness state manager, ensuring compatibility with the Fn API. His work included comprehensive unit and integration testing, documentation updates, and code quality improvements, demonstrating depth in Go SDK development, state management, and integration testing within a complex distributed system.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
1Total
Bugs
0
Commits
1
Features
1
Lines of code
858
Activity Months1
Your Network
106 peopleShared Repositories
106
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Work History
March 2026
1 Commits • 1 Features
Mar 1, 2026Month: 2026-03 — Delivered the Go SDK OrderedListState for the stateful DoFn API, closing a long-standing gap with Java and Python and enabling ordered-key state management in Go. Implemented state.OrderedList[T] with Add, Read, ReadRange, Clear, ClearRange for int64 sort keys; wired the provider through exec, graphx translate, and the harness state manager to the Fn API beam:coder:ordered_list_state:v1 URN. Added comprehensive tests (state, userstate, sideinput) and integration tests against the Prism runner. Documentation updates and CHANGES entry, plus minor quality fixes (go fmt, URN cleanup, rename OrderedListValue). This work increases Go pipeline capabilities and parity with other SDKs, unlocking more sophisticated streaming use cases and improving cross-language interoperability.
1 Commits • 1 Features
Mar 1, 2026Month: 2026-03 — Delivered the Go SDK OrderedListState for the stateful DoFn API, closing a long-standing gap with Java and Python and enabling ordered-key state management in Go. Implemented state.OrderedList[T] with Add, Read, ReadRange, Clear, ClearRange for int64 sort keys; wired the provider through exec, graphx translate, and the harness state manager to the Fn API beam:coder:ordered_list_state:v1 URN. Added comprehensive tests (state, userstate, sideinput) and integration tests against the Prism runner. Documentation updates and CHANGES entry, plus minor quality fixes (go fmt, URN cleanup, rename OrderedListValue). This work increases Go pipeline capabilities and parity with other SDKs, unlocking more sophisticated streaming use cases and improving cross-language interoperability.
March 2026
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Quality Metrics
Correctness100.0%
Maintainability80.0%
Architecture100.0%
Performance80.0%
AI Usage60.0%
Skills & Technologies
Programming Languages
Go
Technical Skills
Go SDK developmentIntegration testingState managementUnit testing
Repositories Contributed To
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