apache/pulsar
Mar 2025 – Mar 2025
1 Month active
Languages Used
Java
Technical Skills
API DesignBackend DevelopmentBug FixingMetricsValidation Logic
Hao Zhang
PROFILE
Hao Zhang
During March 2025, Zhang Hao contributed to the apache/pulsar repository by developing topic-level retention policy validation within the broker, ensuring that retention size and time limits are correctly configured and preventing invalid settings. He implemented this feature in Java, incorporating comprehensive tests to verify the new validation logic. Additionally, Zhang Hao addressed an issue in the HTTP metrics endpoint by updating the compaction latency reporting mechanism, refreshing writeLatencyStats before retrieval to avoid reporting zero latency. This fix, also covered by targeted tests, improved monitoring accuracy. His work demonstrated strong skills in backend development, API design, metrics instrumentation, and quality assurance.
Overall Statistics
Feature vs Bugs
50%Features
Repository Contributions
2Total
Bugs
1
Commits
2
Features
1
Lines of code
78
Activity Months1
Your Network
102 peopleSame Organization
@cmss.chinamobile.com31
Work History
March 2025
2 Commits • 1 Features
Mar 1, 2025March 2025 (2025-03) delivered two high-impact changes in apache/pulsar, strengthening configuration correctness and observability. 1) Topic-level retention policy validation added to the broker to prevent invalid configurations; includes tests to verify the new rules (commit 1eb7866e1c25f8296a95941b1c0591339da82f80). 2) Compaction latency metrics reporting fixed in the HTTP metrics endpoint to avoid reporting zero latency by refreshing writeLatencyStats before retrieval; includes tests to verify correct latency reporting (commit 2eff40f7390b6d08f37a53ee909aead57c4ae5c4). Impact: reduces misconfiguration risk, improves reliability and monitoring accuracy, and strengthens customer trust. Demonstrated skills: Java broker internals, test-driven development, metrics instrumentation, and quality assurance.
2 Commits • 1 Features
Mar 1, 2025March 2025 (2025-03) delivered two high-impact changes in apache/pulsar, strengthening configuration correctness and observability. 1) Topic-level retention policy validation added to the broker to prevent invalid configurations; includes tests to verify the new rules (commit 1eb7866e1c25f8296a95941b1c0591339da82f80). 2) Compaction latency metrics reporting fixed in the HTTP metrics endpoint to avoid reporting zero latency by refreshing writeLatencyStats before retrieval; includes tests to verify correct latency reporting (commit 2eff40f7390b6d08f37a53ee909aead57c4ae5c4). Impact: reduces misconfiguration risk, improves reliability and monitoring accuracy, and strengthens customer trust. Demonstrated skills: Java broker internals, test-driven development, metrics instrumentation, and quality assurance.
March 2025
Activity
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Quality Metrics
Correctness100.0%
Maintainability100.0%
Architecture90.0%
Performance100.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
Java
Technical Skills
API DesignBackend DevelopmentBug FixingMetricsValidation Logic
Repositories Contributed To
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