[ioltas]

The discussion is moving on lately with a refactoring to create an access method handler for tables: https://www.postgresql.org/message-id/d7e41e76-e565-8bc0-4e9...

Here is as well some documentation on the matter: https://wiki.postgresql.org/wiki/HeapamRefactoring

Having "CREATE ACCESS METHOD [...] ON STORAGE|TABLE" to create a custom access method, or storage engine, and extending CREATE TABLE to be able to pass a storage method with the table definition could become a quite powerful combination. The main challenge is to come up with an interface solid enough to be able to handle problems related to MVCC, like VACUUM cleanup.