Is there any kind of general rule-of-thumb character limit in regards to faceting on very long strings?
I have a string field that I want to facet on (contains geographic data structured as a GeoJSON Feature), where the length is typically around 220 characters. Is this too long to facet on, performance-wise? If this (~220 chars) is too long, is there some way to hash the long string and copyField for better performance, but in a way that the original string values can be returned as facets in the response? I know this question is a bit vague, and I would imagine mileage will vary depending on the specifics of the situation. I anticipate the entire index to include about 2 million documents, with possibly about 200,000 unique values for this GeoJSON string field. Thanks! Eben English
