Xinyu Zeng

PhD student and database researcher focused on columnar formats, multimodal data lakes, and data infrastructure for AI, known for leading the F3 (Future-Proof File Format) research project and related publications.

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Dec 29, 2025 • 59min

Unfreezing The Data Lake: The Future-Proof File Format

Xinyu Zeng, a PhD student and database researcher, dives deep into F3, the innovative 'future-proof file format' he’s developing. He highlights the limitations of existing formats like Parquet and ORC, tackling issues such as CPU-bound decoding and metadata overhead. By rethinking the layout and using WebAssembly for self-decoding, F3 aims to advance data handling. Xinyu discusses the importance of decoupling formats, supports multimodal data, and shares future directions, including integrating with existing technologies to enhance data lakes.

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