Github user vvysotskyi commented on the issue:
https://github.com/apache/drill/pull/905
@jinfengni thanks for looking into this. Completely agree with you that it
would be better to consider both row and column count.
Unfortunately, it does not help to fix this issue, since the ratio of
column count of tables very often much smaller than the ratio of row count
(actual row count). (`c1/c2 << r2/r1`)
So I guess it makes sense to implement your proposal to consider the column
count together with the row count in another pull request.
---
