Hi, I'm Linwei Zhang (usually naming lewiszlw on the internet):

• 🎓 Computer science graduate from WHUT
• 👨‍💻 Worked at Meituan / Amazon / Xiaomi
• 💻 Database engineer | 🎮 Hobbyist game dev
• 📄 Resume: English TODO | 中文
• 📱 Contact me: 📫 lewiszlw520@gmail.com | 💬 Wechat: wx597422850 | Discord: linwei#8522
• Social network: 🦣 Mastodon | Twitter
• Others: 知乎 | Bilibili | Youtube

🎖️ Open source contributions

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🔨 Check out my recent pull requests

• Debug print as many fields as possible for SessionState on apache/datafusion (5 days ago)
• Fix ScalarUDFImpl::propagate_constraints doc on apache/datafusion (6 days ago)
• Improve docs and fix a typo on apache/datafusion (1 week ago)
• Cleanup GetIndexedField on apache/datafusion (1 week ago)
• Separate Partitioning protobuf serialization code on apache/datafusion (2 weeks ago)
• Improve UserDefinedLogicalNodeCore::from_template API to return Result on apache/datafusion (3 weeks ago)
• Improve ContextProvider on apache/datafusion (3 weeks ago)
• Migrate testing optimizer rules to use rewrite API on apache/datafusion (3 weeks ago)
• Improve UserDefinedLogicalNode::from_template API to return Result on apache/datafusion (3 weeks ago)
• Improve signature of get_field function on apache/datafusion (3 weeks ago)

👷 Check out what I'm currently working on

• apache/datafusion - Apache DataFusion SQL Query Engine (4 days ago)
• systemxlabs/systemxlabs.github.io - (5 days ago)
• systemxlabs/ballista-mvp - A MVP implementation of distributed query engine cut from datafusion-ballista codebase for learning purpose. (1 week ago)
• sundy-li/arrow_cli - A Native client talk with server in Flight SQL protocol (3 weeks ago)
• systemxlabs/datafusion-geo - Add geo functionality extension to datafusion query engine. (1 month ago)

⭐ Check out my recent stars

• systemxlabs/systemxlabs.github.io - (3 weeks ago)
• google/comprehensive-rust - This is the Rust course used by the Android team at Google. It provides you the material to quickly teach Rust. (2 months ago)
• getzola/zola - A fast static site generator in a single binary with everything built-in. https://www.getzola.org (2 months ago)
• sundy-li/arrow_cli - A Native client talk with server in Flight SQL protocol (2 months ago)
• systemxlabs/ballista-mvp - A MVP implementation of distributed query engine cut from datafusion-ballista codebase for learning purpose. (2 months ago)

📜 Check out my recent blog posts

• DataFusion 查询引擎 UDF 设计 (1 week ago)
• DataFusion 查询引擎 TreeNode APIs (2 weeks ago)
• Apache DataFusion 查询引擎论文 (1 month ago)
• Ballista 分布式查询引擎 - 计划执行 (1 month ago)
• Ballista 分布式查询引擎 - 集群共享状态 (1 month ago)