You computer where you installed the Apache Drill driver will be the host so the host name is localhost (or IP address 127.0.0.1 as the host name) or your computers Windows computername.
Since you installed Drill on your own computer you will also be able to read JSON files from local drives. This is a setup I have installed several times.
The only thing that is a drawback with installing Drill is from a simplicity perspective since you have a so-called Drill Bit on your computer running as a service. So there are more moving parts than you would expect from a normal driver. You will have to start the Drill Bit each time you use Qlik or have it running as a service all the time.
Thanks for your Quick response. While configuring mapr drill driver,I am getting error called "No connection could be made because the target machine actively refusing it". Can you please help me out for this.while configuring what all the steps you followed?