hadoop environment:

[崔苗]

we have some problems in hadoop environment:
1、how does kylin find the hadoop environment ? if we export such as 
HIVE_HOME=/root/hive_2.10-0.10.0.0 into /etc/profile,could the profile file 
help kylin to find hive or hbase environment?
2、we have already installed spark2 in the cluster ,how to use this spark2 
instead of the spark within kylin?