DuckDB and Arrow Win AI Data Prep, Then Hit a Wall at Serving
This story is from 2026-10-18. It is preserved in the archive; the latest stories are on the live feed.
TL;DR — Columnar engines like Arrow, DuckDB, Polars, and GPU dataframes are built for scan-heavy, amortized access — ideal for building training sets, terrible for single-row inference lookups. The real value of Arrow in AI systems isn't query speed, it's zero-copy interchange between the offline c…
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- 2026-10-18 13:16 · DEV Community — AI
DuckDB and Arrow Win AI Data Prep, Then Hit a Wall at Serving