Apache Arrow DataFusion 7.0 released

Highlights from new release

- Significant performance improvements

- Memory tracking and spill to disk

- Support for decimal type

- New datafusion-contrib organization with python implementation and s3 support

- More math functions

- Public expression simplification api

- Arrow2 branch

Currently in the works

- More features for working with limited memory and large datasets

- Ballista improvements on context, state management, extensibility, and file system access

Here is an announcement of the 5.0 release: https://news.ycombinator.com/item?id=28290616