polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Polars' SIGINT handler sets `SA_RESTART` flag, preventing syscalls from being interrupted
- Allow forcing suffix on `.join()`
- Dataframe to_arrow causes silent rechunk
- Add a `infer_schema` option to `read_excel`
- Add faster way to check if two `pl.Enum` are equal, but in different order
- `pl.concat(..., how='vertical_relaxed')` with 2 different `pl.Enum` types fails to find supertype
- Allow negative indices for lazyframe head
- Support reading hdf5 as IO plugin.
- Missed optimization: transform multi-attribute equality joins into filter + single-attribute join
- Can't load JSON file > 4GB in size
- Docs
- Rust not yet supported