Hi,

I am doing a performance test on a Drill v1.1 query over directories. I have 
the following two queries which are effectively doing the same thing:

SELECT count(*) FROM `stg`.`ws`.`./2015/10/13` where columns[7] like '%blah%' 
and columns[10] = ‘xx’

SELECT count(*) FROM `stg`.`ws`.`./2015` where dir0='10' and dir1='13' and 
columns[7] like '%blah%' and columns[10] = ‘xx’
I have noticed that the second query that includes ‘where dir0=’10’ and 
dir1=’13’ ‘ in the where clause takes ~29 seconds to run, however the first 
query takes ~8 seconds to run. The Fragment profiles show the same explain plan 
and very similar operator profiles. The second queries fragment profile starts 
from 22 seconds whereas the first profile starts from 1 second.

Can this performance issue be caused by the Calcite parser taking  longer to 
understand the where clause?

Thanks,
Mike


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