Why isn't the root user showing up on ranger? I intend to give permission to the root user on Hbase but I'm getting the following error:     hbase(main):001:0> grant 'root','RWXCA' ERROR: org.apache.hadoop.hbase.coprocessor.CoprocessorException: HTTP 400 Error: root is Not Found at org.apache.ranger.authorization.hbase.RangerAuthorizationCoprocessor.grant(RangerAuthorizationCoprocessor.java:1261) at org.apache.ranger.authorization.hbase.RangerAuthorizationCoprocessor.grant(RangerAuthorizationCoprocessor.java:1072) at org.apache.hadoop.hbase.protobuf.generated.AccessControlProtos$AccessControlService$1.grant(AccessControlProtos.java:10023) at org.apache.hadoop.hbase.protobuf.generated.AccessControlProtos$AccessControlService.callMethod(AccessControlProtos.java:10187) at org.apache.hadoop.hbase.regionserver.HRegion.execService(HRegion.java:8065) at org.apache.hadoop.hbase.regionserver.RSRpcServices.execServiceOnRegion(RSRpcServices.java:2426) at org.apache.hadoop.hbase.regionserver.RSRpcServices.execService(RSRpcServices.java:2408) at org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:42010) at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:413) at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:131) at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:324) at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:304)     I assume this is because ranger does not recognize the unix root user. But why? Is there a workaround? ... View more