usage of a custom SearchProvider
Since Search Settings are no longer available in Server Administration (> Jahia 18.104.22.168) can you switch to a custom search provider?
Yes, but you have to enter manually in the node /settings/search-settings your custom SearchProvider. The easiest way would be to do it with the Repository Explorer. Navigate to the node /settings/search-settings, in the content tab you will have a field j_provider. Update this field with the name of your customer SearchProvider (search Provider must exist and registered) Usually it happens on deployment or on startup.
NOTE: The Provider name is case-sensitive. So, the j_provider field must be exactly updated to the correct name.