To disable the Client/Server authentication, you have to set the hive.server2.authentication property to NONE. For example:
<property>
<name>hive.server2.authentication</name>
<value>NONE</value>
<description>
Client authentication types.
NONE: no authentication check
LDAP: LDAP/AD based authentication
KERBEROS: Kerberos/GSSAPI authentication
CUSTOM: Custom authentication provider
(Use with property hive.server2.custom.authentication.class)
</description>
</property>