polars
https://github.com/pola-rs/polars
Rust
Dataframes powered by a multithreaded, vectorized query engine, written in Rust
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- Issues
- Error with enums and sink_parquet
- `read_database_uri` times out when fetching data from a Clickhouse DB
- Streaming `replace_strict` does in-memory-map, unless `eval`uated in a list
- buffer offset panic in from_arrow for a series of 0-size arrays
- `json_normalize` does not handle lists with mixed types
- Direct users of `filter` towards doing a SEMI JOIN.
- Improve docs for PartitioningScheme
- Unify partition_by syntax
- In PartitionBy classes, add a callback for per file operations AND/OR dedupe per partition
- More Explicit Alternative to coalesce in join()
- Docs
- Rust not yet supported