>>baotia+(OP)
The DuckDB-as-a-storage-engine approach is clever because it lets you keep your existing MySQL connections, tooling, and replication topology while routing analytical queries to a columnar engine underneath. That's a much easier sell operationally than standing up a separate analytics database and building a sync pipeline. The real question is how they handle consistency between the InnoDB and DuckDB copies of the same data, that's where every hybrid OLTP/OLAP system either shines or quietly loses rows.