I'm trying to figure out the modeling and mapping which will be best suited for me, and have some questions regarding the Nested object concept, specifically the hidden document concept:
- How a mapping for a nested object will look like? It cannot be flatten like an object-type field, so what's this "magic" that make this joinable fastly (https://www.elastic.co/guide/en/elasticsearch/guide/master/nested-objects.html#nested-objects) ?
- Can someone elaborate about the disk space efficiency when using a nested object?