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Haotian Wu

PROFILE

Haotian Wu

During a two-month period, Hao Wang focused on reliability improvements in open-source Java projects, addressing complex test and execution order issues. In apache/nifi, he stabilized timestamp parsing tests by reordering scenarios and resetting reader properties, reducing flaky failures and improving CI feedback. For apache/incubator-kie-drools, he enhanced rule engine reliability by implementing deterministic ordering of rule consequence declarations, switching from HashSet to LinkedHashSet to ensure consistent execution. His work leveraged Java, NiFi, and rule engine expertise, resulting in more predictable validation and debugging. The depth of his contributions strengthened test harnesses and improved maintainability in both repositories without introducing new features.

Overall Statistics

Feature vs Bugs

0%Features

Repository Contributions

2Total
Bugs
2
Commits
2
Features
0
Lines of code
40
Activity Months2

Work History

October 2025

1 Commits

Oct 1, 2025

October 2025 monthly summary for apache/incubator-kie-drools: Implemented deterministic ordering of rule consequence declarations to remove nondeterministic behavior, improving reliability and debuggability of rule execution. Changes switch from HashSet to LinkedHashSet for used declarations when the rule dialect is MVEL or during rule consequence parsing. This directly addresses issues around nondeterministic execution and aligns with reliability targets for production deployments. The work was tracked under incubator-kie-issues-6472/6473 and committed as ac50f75c39b97d46e109f96e7bd6e11f44feae32.

September 2025

1 Commits

Sep 1, 2025

September 2025 monthly summary: Focused on improving test reliability in apache/nifi by stabilizing the TestValidateRecord timestamp parsing. Implemented scenario reordering and reset of reader properties to eliminate order-dependent flaky behavior across formats and schema inference strategies. The changes, tied to NIFI-11362 and commit d9eb462f2ccdc52c4a372e85fbb476387e2a9e9d, reduced flaky test failures, strengthened the test harness, and enabled faster, more dependable validation of timestamp handling across input variants. Business value includes more reliable CI signals, quicker bug triage, and sustained correctness of timestamp parsing.

Activity

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Quality Metrics

Correctness80.0%
Maintainability80.0%
Architecture80.0%
Performance60.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

Java

Technical Skills

JavaJava DevelopmentNiFiRule EngineUnit Testing

Repositories Contributed To

2 repos

Overview of all repositories you've contributed to across your timeline

apache/nifi

Sep 2025 Sep 2025
1 Month active

Languages Used

Java

Technical Skills

JavaNiFiUnit Testing

apache/incubator-kie-drools

Oct 2025 Oct 2025
1 Month active

Languages Used

Java

Technical Skills

Java DevelopmentRule Engine

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