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rs-0.55.2

moeru-ai/airirs-0.55.2Aug 6, 2026by github-actions[bot]

AI Summary

Rust Polars v0.55.2 focuses on enhancing cloud IO operations with an adaptive HTTP rate-limiter and addresses critical unsoundness bugs in the rayon block_on function.

Key Highlights

  • Adaptive HTTP rate-limiter is added for cloud IO operations.
  • Fixes unsoundness in rayon block_on to prevent potential runtime issues.
  • Adds check for shallow IR node equality on top of hashing in CSPE.
  • Documentation is updated to clarify arg_extremum function behavior on ties.

New Features

  • Adaptive HTTP rate-limiter
  • Rayon block_on unsoundness fix
  • IR node equality checking
  • Documentation updates

Full Release Notes

## ✨ Enhancements

- Add adaptive HTTP rate-limiter for cloud IO (#28591)

## 🐞 Bug fixes

- Unsoundness in rayon block\_on (#28709)
- Check for (shallow) IR node equality on top of hashing in CSPE (#28506)

## 📖 Documentation

- Document that arg\_extremum functions return any index on ties (#28691)

Thank you to all our contributors for making this release possible!
@dancsi, @dsprenkels, @kdn36, @orlp and @ritchie46