Hi, I am a master in china and have learned drill for a long time. Now drill
has provided functions to query file in a same directory. Drill scans all files
in a same directory firstly, then executes other operations for a query. But I
have a requirement that require to query multiple files in different
directories once. I don't want to move all files in a same directory that will
lead some I/O cost. Now I have a idea is to add function in source data to
support this function, but I don't have enough ability to understand source
data. Can you give some advice on this problem, thank you !
Jinbo Wu
