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.scan_iceberg() fails to read from Iceberg table after adding external parquet files
- OOM when perform operations after cross join on LazyFrame
- DataFrame.drop("*") drops all columns, not the column named "*"
- Unable to serialize a LazyFrame which is read from a file using File IO (open or gzip.open)
- Schema behavior when creating a dataframe is not consistant between sequence of str and dict
- `POLARS_STREAMING_CHUNK_SIZE`/`set_streaming_chunk_size` does not have an effect in the new streaming engine
- Add `encoding='windows-1252'` to scan_csv
- Weighted quantile/median
- Allow for selecting lists of lists
- Simple group by in new streaming engine uses very much memory
- Docs
- Rust not yet supported