Xiuli Wei
Software Engineer at JD
Beijing, China
Summary
🤩
RockstarXiuli Wei is a software engineer based in Beijing with eight years of experience building and optimizing large-scale distributed systems. Currently at JD, Xiuli contributes to backend infrastructure and has a strong footprint in the Apache Spark community through fixes and performance improvements across core, network, SQL, shuffle service, and ORC reader components. Their contributions show a pragmatic focus on memory safety, executor allocation, and I/O performance—areas that directly impact cluster stability and job throughput. Comfortable navigating complex codebases, Xiuli blends systems-level rigor with measurable performance tuning. Colleagues can rely on them for subtle but high-impact refactors that reduce operational risk in production analytics platforms.
7 years of coding experience
Github Skills (9)
network10
javas10
big-data10
spark10
shuffle10
sql10
java10
scala10
orc9
Programming languages (4)
Github contributions (5)
apache/spark
Apr 2021 - Dec 2021
Apache Spark - A unified analytics engine for large-scale data processing
Role in this project:
Back-end Developer
Back-end DeveloperContributions:74 reviews, 8 commits, 42 PRs in 7 months
Contributions summary:Xiuli contributed to the Apache Spark project by addressing various issues related to the core functionalities, network, and SQL components. Their work included fixing a potential memory leak in TransportResponseHandler, improving the performance of ExecutorAllocationManager and ExternalBlockHandler, and optimizing the ORC reader. The user also made improvements to the shuffle service and refactored core code.
analyticspythondata-processingsqlapache
weixiuli/spark
Jul 2018 - Sep 2022
Mirror of Apache Spark
Contributions:113 commits, 141 pushes, 45 branches in 4 years 2 months
spark-mlapachebig-datasparkscala
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.