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Persistent Storage

Unity Catalog's Localhost Reference Server uses Hibernate as the persistence layer to manage asset metadata.

Unity Catalog uses etc/conf/ configuration file to set up a JDBC-compatible database system. There are sample configuration files for MySQL and PostgreSQL.

By default, Localhost Reference Server uses H2 Database Engine to store metadata (in etc/db/ file).

With server.env property being test, Unity Catalog uses the following properties:

Hibernate Property Value
hibernate.connection.driver_class org.h2.Driver
hibernate.connection.url jdbc:h2:mem:testdb;DB_CLOSE_DELAY=-1 create-drop