Polars 2.1 ships with disk spill for group-by and 90+ performance improvements
calabi_and_yau · x · 2026-10-28
Polars 2.1 arrives just three weeks after 2.0. Highlights:
- Spill-to-disk support for group-by and window functions
- Recursive CTEs in SQL
- Reading and writing encrypted Parquet
- Better memory tracking for out-of-core workloads
- Over 90 performance improvements merged
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