polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Type hints / documentation on partitioning with sink methods
- Append on export
- `PartitionByKey` used as a generic method in other methods other than sink_*
- fix: Fix schema type integer inference
- is_in() does not work with DatetimeIndex anymore
- `LazyFrame`s backed by `bytes` cannot be serialized
- Add quantiles method to expression list namespace
- Throw an error when serializing impure python callbacks.
- No optimization of filter predicates for contradictions
- Nested aggregations in `rolling` with `group_by` is slow and consumes a lot of memory
- Docs
- Rust not yet supported