Restart services

Ambari shows ‘Restart Required’ for dependent services. Restart the services to make sure the configurations are reflected:

• To refresh ‘beacon’ user privileges as hadoop superuser, you can use refresh hadoop group mapping command or restart namenode service. Refresh the hadoop group mapping commands:

  
  hdfs dfsadmin -refreshSuperUserGroupsConfiguration
  hdfs dfsadmin -refreshUserToGroupsMappings
  

• Verify that Beacon was added as a user to the HDFS superuser group.

  hdfs groups beacon

  The output should display HDFS (or value of dfs.permissions.superusergroup config) as one of the groups.

  Restart Hiveserver2 to refresh Hive configurations.

  Restart node managers to create ‘beacon’ OS user.