Are there any migration strategies/best practices when migrating from PG11 partitioned tables to PG12 partitioned tables that don't involve extended downtime? We have about 900 partitions (hash partitions) in PG11 with millions of rows that we need to migrate to PG12 and (ideally) would like to minimize the outage window (if at all possible)?
Any guidance or pointers from your experiences would be highly appreciated!
