It's not datafusion, much more custom with a number of extensions that underly pieces. And we've got a number of other extensions that will be in the works, to the user it's still a seamless experience but we've seen that smaller extensions that know how to work together are easier to maintain. For example we're working on a map type one that knows how to understand the map types within Parquet files within Postgres. In time we may open source some of these pieces, but we don't have a time frame for that and it's a case by case on each of the extensions.
