Drill is not starting with kerberos authentication

[Prabhakar Bhosale]

Hi Team,
I have configured drill cluster with 3 nodes and kerberos authentication.
While starting drill it gives following error.
*"Authentication is enabled for webserver but non of the security mechanism
was configured Properly. Please verify the configuration and try again"*

Following is my configuration in drill-override.conf

drill.exec:{

cluster-id:"mycluster",
zk.connect:"host.myserver.com:2181",
impersonation:{
},


}