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7/13/2026
The File Format Renaissance: Parquet, Lance, Vortex, Nimble, BtrBlocks, and the New Physics of Columnar Storage

The File Format Renaissance: Parquet, Lance, Vortex, Nimble, BtrBlocks, and the New Physics of Columnar Storage

Short summary

A deep technical survey of the columnar file format renaissance driven by AI workloads and hardware evolution. Parquet's 2013 assumptions break under billion-row vector lookups and GPU-speed training pipelines, spawning new formats: Lance, Vortex, Nimble, and BtrBlocks. The article dissects each format's architecture, encoding strategy, access patterns, and roadmap, then offers practitioner guidance on which format fits which workload.

  • •AI workloads and NVMe/SIMD/GPU hardware broke Parquet's design assumptions
  • •New formats—Lance, Vortex, Nimble, BtrBlocks—target vector lookups, GPU pipelines, and lightweight encodings
  • •Practical guidance on format selection by workload type, with honest pros and cons

Generated with AI, which can make mistakes.

#open-source#research-breakthrough#industry-adoption
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