polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- numpy ufunc with literal input causes thread panic
- Replace Kahan summation with Neumaier
- Decimal type is changed on arithmetic operations
- `from_arrow` PanicException for struct with duplicate fields
- `""` in the csv input brings different results when using the GPU Engine
- test(python): Test list-of-structs in map_elements
- nulls not inferred when creating DataFrame with empty-struct column
- Expose rolling expression node in Python API
- Parameter for pl.Categories() to make it unique to the dtype being instantiated
- Depending on data distribution rolling kernels are not used leading to performance degradation
- Docs
- Rust not yet supported