I think you're right - Substrait wants to sit above something like Velox. The closest comparison is probably Databricks Photon[1], but that's proprietary. [1]

I think you're right - Substrait wants to sit above something like Velox. The closest comparison is probably Databricks Photon[1], but that's proprietary. [1]: https://www.databricks.com/product/photon https://www.databricks.com/product/photon