Implement locking for schema, endpoint and possibly datasource levels
what e.g. for long-running delete by queries
(from redmine: issue id 637, created on 2018-01-22tgradl, closed on 2018-08-17)
what e.g. for long-running delete by queries
(from redmine: issue id 637, created on 2018-01-22tgradl, closed on 2018-08-17)