Create a Proxy User
You must specify the proxy user properties for groups and hosts for the Oozie
process in the Hadoop core-site.xml file.
Steps
In Ambari, select the HDFS component.
Click Configs>Advanced.
Scroll to the Custom core-site section and expand the section.
Specify the following properties:
Field Name Value Description hadoop.proxyuser.oozie.groups $USER_GROUPS_THAT_ALLOW_IMPERSONATION A comma-separated list of the groups that the impersonated user belongs to. hadoop.proxyuser.oozie.hosts $OOZIE_SERVER_HOSTNAME A comma-separated list of the hosts from which the user can connect to impersonate a user in the specified groups.