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Sung Kang

PROFILE

Sung Kang

Worked on the DataDog/datadog-agent repository to address telemetry accuracy during cluster leadership transitions. Developed a cleanup mechanism in Go within the cluster store to reset danglingConfig and unscheduledCheck metrics whenever the agent switched between leader and follower roles. This targeted bug fix included comprehensive unit testing to ensure that gauge metrics were reliably cleared, preventing stale telemetry data and reducing false alerts during failovers. The work focused on backend development and telemetry, enhancing the reliability and observability of the cluster-agent. The solution was isolated, well-tested, and delivered measurable improvements to cluster stability and monitoring accuracy in production environments.

Overall Statistics

Feature vs Bugs

0%Features

Repository Contributions

1Total
Bugs
1
Commits
1
Features
0
Lines of code
56
Activity Months1

Work History

June 2026

1 Commits

Jun 1, 2026

June 2026: DataDog/datadog-agent telemetry metrics cleanup on leader-follower transition. Implemented a cleanup mechanism in the cluster store to reset danglingConfig and unscheduledCheck metrics during state resets, with a focused unit test ensuring gauges are cleared. This fix prevents stale telemetry after leadership changes, improving observability accuracy and stability during failovers. The change is isolated, with clear ownership and measurable business value through more reliable telemetry and fewer false alerts.

Activity

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Quality Metrics

Correctness100.0%
Maintainability100.0%
Architecture80.0%
Performance80.0%
AI Usage60.0%

Skills & Technologies

Programming Languages

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Technical Skills

Backend DevelopmentGoTelemetryUnit Testing

Repositories Contributed To

1 repo

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DataDog/datadog-agent

Jun 2026 Jun 2026
1 Month active

Languages Used

No languages

Technical Skills

Backend DevelopmentGoTelemetryUnit Testing