@Override
    protected void process(String hostName, ResolvedKerberosKeytab resolvedKeytab, ResolvedKerberosPrincipal resolvedPrincipal, Map<String, ? extends Collection<String>> serviceComponentFilter) throws IOException {
      if (shouldRemove(hostName, resolvedKeytab, resolvedPrincipal, serviceComponentFilter)) {
        super.process(hostName, resolvedKeytab, resolvedPrincipal, serviceComponentFilter);
      }
    }
RemoveKeytabCommandParameterProcessor is an implementation of {@link KerberosCommandParameterProcessor}
that handles the case for setting keytab files.
<p>
Specifically, performs operations any services and components; however only keytab files found
to no longer be needed are specified for removal.
ambari-server/src/main/java/org/apache/ambari/server/events/publishers/AgentCommandsPublisher.java