How to do sorting in lucene layer instead of Solr?

[Sundeep T]

Hi,

I am using /export API, and in Solr 6.3, the sorting in done by Solr in
SortingResponserWriter class after the lucene query execution is done.

I want to know if it is possible to do the sorting in lucene layer itself
and get the results, so that its more efficient if we only want top 10 rows
for instance. We have docValues enabled for all the fields.

Thanks
Sundeep