Fix: HDP “Unauthorized connection for super-user: oozie from IP 127.0.0.1” Recently have been playing with HortonWorks HDP 2.2. Was starting to configure some oozie workflows and when submitting the job the first step’s Hive script failed with this error and stack. JA002: Unauthorized connection for super-user: oozie from IP 127.0.0.1 Caused by: org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.security.authorize.AuthorizationException): Unauthorized connection for super-user: oozie from IP 127.0.0.1 at org.apache.hadoop.ipc.Client.call(Client.java:1468) at org.apache.hadoop.ipc.Client.call(Client.java:1399) at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:232) at com.sun.proxy.$Proxy39.getDelegationToken(Unknown Source) at org.apache.hadoop.yarn.api.impl.pb.client.ApplicationClientProtocolPBClientImpl.getDelegationToken(ApplicationClientProtocolPBClientImpl.java:306) ... 30 more I was found the solution here. ... View more