Drill & approximate query

[Uli Bethke]

Is approximate query on the roadmap/radar for Apache Drill (similar to 
what we have in BlinkDB)?

I see the following benefit of this feature:
When performing data discovery, the analyst can often trade off raw 
speed against accuracy.
Data discovery tools such as Datameer etc. work on a statistically 
significant sample of data. Approximate query could potentially put 
Drill at a par with these.

I would also be interested to find out what other people's point of view 
is on this.
Cheers
Uli