We should mention that some properties like hibernate.search.indexing.plan.synchronization.strategy (previously hibernate.search.automatic_indexing.synchronization.strategy) cannot be configured when outobx polling strategy is used. We could also check if there are any other “mutually exclusive” properties related to coordination strategy while we are at it. Also, see the discussion in https://discourse.hibernate.org/t/configuration-property-automatic-indexing-synchronisation-strategy-causes-exceptions-when-used-with-outbox-polling-coordination/7995 |