Does eager_global_ordinals speed up metrics calcaulations on high cardinality keyword fields?

Hi,

I was wondering if people have tested with a dataset with around 1.5M records with 40k of unique terms in a particular field to do metric calculations on or a regex filtering. I know there is a wildcard field (does that support term aggregations btw?)..

Would the setting "eager_global_ordinals" for a keyword help to load the terms in ordinal tree for quick lookups to make a more speedy query?