http://hn.vernccvbvyi5qhfzyqengccj7lkove6bjot2xhh5kajhwvidqafczrad.onion/stories/40959787
However, we need to _denormalize_ all the permissions that relate to a specific document when we index it into our search index. When we transactionally reindex a document "online", this is no problem. However, when we need to reindex an entire search cluster from scratch, loading every ancestor of each page in order to collect all of its permissions is far too expensive.