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 scan_parquet_files blocking tokio async main thread
- weights not yet supported on array with null values
- Invalid type inference on hive partitioned column
- Inconsistent Pivot Options Between Pivot API reference and Pivot User Guide
- join of empty dataset and non-empty dataset fails when empty dataset is read from files
- `pl.lit(1)` is type `Int32` but `pl.lit([1])` is type `Int64`
- Assigning to a slice of df.columns fails silently
- Inconsistent application of hive keys when using scan_parquet
- Add polars parquet dataset abstraction
- Add a cookbook section to the user guide
- Docs
- Rust not yet supported