The "Hadoop Services Whitelisting" section at http://oozie.apache.org/docs/4.0.0/AG_HadoopConfiguration.html says:
There are two problems here:
- The twiki formatting is causing things to get lost; in the twiki file, it says:
which causes the "AUTHORITY" to disappear and makes this hard to read in the rendered version
- The sentence itself is incorrect: * has no special meaning. It should either be a comma-separated list of HOST:PORT or a space/empty.