I’m using Wiki 1.31 with Percona XtraDB Cluster (master x master, version 5.7) with 3 nodes. Second the developer: “Percona XtraDB Cluster cannot properly propagate certain write operations to tables that do not have primary keys defined”.
I have checked and some tables does not have primary keys:
Too, the table mw_searchindex still using the engine MyIsam (all other tables are InnoDB);
I think clustering will be increasingly used… and this changes will continue to be compatible with local DB use.
Do this changes on tables structures maybe considered an enhancement for a future release ?