Sorting a Mongo table should leverage Mongo Indexes

When doing a query using Mongo, sorting takes place entirely in Drill.

Getting the first 1000 rows from a 1000000 rows table, sorted by a field which has an index takes a long time (about 45 seconds in our test environment).

Sample drill query:
Select c.name from mongo.foo.json_customers c order by c.name limit 1000

Doing the same in mongo client takes less than a second.

Sample mongo query: db.json_customers.find().sort(

).limit(1000)

Sorting by a field should leverage the existing mongo indexes if they exist.