Kezhu Wang
Apache ZooKeeper Committer at The Apache Software Foundation
Shanghai, Shanghai, China
Summary
🤩
Rockstar🎓
Top SchoolKezhu Wang is a seasoned backend engineer and Apache committer with 14 years of experience building and hardening distributed systems, currently contributing to Apache ZooKeeper and serving on the Apache Curator PMC. He brings deep expertise in stream processing and orchestration—having co-led a streaming platform team and contributed bug fixes and tests across high-profile projects like Apache Flink and Flink’s JDBC connector. Kezhu’s strengths lie in reliability engineering and concurrency debugging, exemplified by fixes for deadlocks, flaky tests, and connection issues in Kubernetes environments. He pairs systems-level C/C++ and game-server experience with production Java/Spring and cloud-native tooling, enabling end-to-end delivery from embedded game logic to large-scale stream jobs. An underappreciated skill is his knack for improving developer experience and maintainability—often surfacing as focused test coverage, doc fixes, and tooling tweaks. Based in Shanghai, he is a consistent open-source contributor known for practical, high-quality patches that improve robustness in widely used infrastructure projects.
14 years of coding experience
8 years of employment as a software developer
Bachelor's degree, Computer Science, Bachelor's degree, Computer Science at Anhui Normal University
Chinese, English
Stackoverflow
141reputation
29kreached
1answer
1question
Github Skills (38)
socket-io10
debug10
consensus10
apache-flink10
database-connection10
game-engine10
testing10
distributed-systems10
c1110
apache10
apache-curator10
zookeeper10
jdbc10
networking10
java10
Programming languages (10)
Github contributions (5)
apache/flink
Jan 2019 - Apr 2021
Apache Flink
Role in this project:
Back-end Developer & QA Engineer
Back-end Developer & QA EngineerContributions:104 reviews, 38 commits, 17 PRs in 2 years 2 months
Contributions summary:Kezhu primarily contributed to the testing and bug fixing of core functionalities within the Apache Flink streaming framework. Their work included implementing tests for windowing features, specifically addressing negative offsets in processing time windows and event time windows. They also focused on code quality improvements, addressing typos and fixing documentation issues to enhance the project's overall maintainability and usability. Additionally, the user identified and fixed a deadlock issue in JDBC connector concurrent loading using Class.forName.
pythonflinkconnectorsqlapache
apache/zookeeper
Mar 2022 - Sep 2022
Apache ZooKeeper
Role in this project:Back-end Developer
Back-end DeveloperContributions:213 reviews, 18 commits, 99 PRs in 6 months
Contributions summary:Kezhu primarily contributes to the Apache ZooKeeper project by addressing bugs and enhancing the codebase's robustness. Their work includes dropping unused code, formatting opcodes, and fixing flaky tests related to request throttling and eager ACL filtering. They also made improvements to persistent recursive watchers. The user's commits focus on improving the core functionality and reliability of the ZooKeeper server.
zookeeperservice-discoverycloudnativeconfiguration-managementapache-zookeeper
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