polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- pl.UInt32 subtraction leading to weird results
- Run end encoding support?
- to_dummies() to accept "return_empty" argument for pl.Enum type.
- Adding a section for R bindings in the list of APIs reference?
- process crashes with `memory allocation failed` when reading small parquet file
- Minimal tests for memory usage contraints in partial-column read APIs
- Parquet row group filter pushdown not working as expected
- Expand metadata to be able to track multi-column and group sort status + add lazyframe method to check whether a group or multicolumns are sorted
- from_dicts changes value when passing rows with nested dictionaries
- Add ability to offload dataframe storage to disk when running out of memory
- Docs
- Rust not yet supported