Github user ppadma commented on the issue:
https://github.com/apache/drill/pull/1030
@arina-ielchiieva Ideally, it would be better to do this properly first
time so we don't have to revisit. But, since there is a correctness issue, it
is ok to go with the approach you have and address the performance problem
later. I will finish review and post my comments soon.---
