Everyone regularly touts that drill is very capable of querying data from parquet files with evolving schemas.
This simple query seems to be giving me an error though (Drill 1.10).
SELECT entity, epoch_hour, max(`1_max`), max(`2_max`), max(`1_max` + `2_max`) as combo
where epoch_hour = 1516770000
group by `entity`, `epoch_hour`
UNSUPPORTED_OPERATION ERROR: Hash aggregate does not support schema changes
Can drill really not do group by with evolving schemas, or am I missing something? This seems like a pretty basic feature to be missing.