In the wake of
ARROW-8792, this issue is to serve as an umbrella issue for follow up work and associated "buildout" which includes things like:
- Implementation of many new function types and adding new kernel cases to existing functions
- Adding implicit casting functionality to function execution
- Creation of "bound" physical array expressions and execution thereof
- Pipeline execution (executing multiple kernels while eliminating temporary allocation)
- Parallel execution of scalar and aggregate kernels (including parallel execution of pipelined kernels)
There's quite a few existing JIRAs in the project that I'll attach to this issue and I'll open plenty more issues as things occur to me to help organize the work.