kylin intermediate tables in Hive

[Jie Tao]

Kylin actually drops useless intermediate tables after cube building, 
but I still see one "kylin_intermediate_cubename_searchdata" table for 
each cube building in Hive. Are these tables still usefull for Kylin? I 
use Kylin 1.5.2.1.

Cheers,
Jie