how to remove frequent following WARN messages in logs files they are filling my logs while quickly

[#1]

b.s.d.nimbus [WARN] principal: stormdev@NRSD.EDU is trying to impersonate principal: ambari-qa@NRSD.EDU

2016-12-08 13:16:27.037 b.s.s.a.a.ImpersonationAuthorizer [INFO] user = stormdev, principal = stormdev@NRSD.EDU is attmepting to impersonate user = ambari-qa for operation = getClusterInfo from host = /192.165.23.74 2016-12-08 13:16:27.037 b.s.s.a.a.ImpersonationAuthorizer [INFO] user = stormdev, principal = stormdev@NRSD.EDU is trying to impersonate user ambari-qa, but config nimbus.impersonation.acl does not have entry for impersonating user or principal.Please see SECURITY.MD to learn how to configure users for impersonation.

[#2 · Accepted solution]

you can set following property in storm.yaml, if you are using ambari then you need to create custom property as follows

Key: nimbus.impersonation.acl 
Value: {'stormdev':{'hosts':['host1','host2'],'groups':['group1','group2']}} 

restart cluster after setting these property