Make string decoding lazier in TopDocs::order_by_string_fast_field #2652
Description
Is your feature request related to a problem? Please describe.
As mentioned in #2642: it would be good for TopDocs::order_by_string_fast_field to be able to lazily decode strings.
Describe the solution you'd like
An iterator over the string fast field's column could be created (at least in ascending order) using a streaming version of sorted_ords_to_term_cb... a descending version of that method could likely also be created.