An in-memory SQL Query Compiler built on Apache Arrow.
Named after Yoshiko Futamura, namesake of the Futamura Projections.
The idea of Mura is to build a simple query compiler to be later specialised into a query interpreter, as discussed in How to Architect a Query Compiler, Revisited. Mura uses Apache Arrow as the memory model. It supports SQL query execution against Parquet, and against in-memory data.