one question about kylin system cube

[梁刚]

Hi All,

I created the “system cube” according to 
http://kylin.apache.org/cn/docs/tutorial/setup_systemcube.html , but I found 
there was no data in hive tables of  "kylin.hive_metrics_query_prod, 
kylin.hive_metrics_query_cube_prod, kylin.hive_metrics_job_prod".
I want to know the data generation logic of these hive tables? or how to 
configure these logics?  it seems there is no official reference documentation 
about this question。Please help!