Hey,
keywords can be configured to be loaded eagerly as global ordinals in the mapping. This is important to not run into delays if a query hits a segment for first time.
I've been wondering if such an option should also exist for the boolean field type. I am not sure how a boolean is stored, but if it is keyword like as a term, would it make sense to also load it eagerly or am I missing something?
Appreciate any help to my confusion 
Have a good week everyone!
--Alex