Hi all, I'm trying to test out Mongo with Drill but seem to be running into very slow performance.
I have about 1M documents loaded into Mongo, and I'm doing something as simple as: select count(*) from mongo.`connect`.events group by collection; where "collection" is a string field in the document. This takes minutes to complete, which to me seems very strange. Any ideas why this would be that slow? I can run an identical query directly on Mongo and it returns in sub-second time.
