User guide's description about the time that Master loaded HelloWorld plugin is not accurate

In user guide, there is a section about how to run helloworld plugin:

"
At this point the master and hello1 nodes should be started and will have loaded the plugin

You should see log output similar to the following in both master and hello1:

10/07/29 17:35:28 INFO conf.SourceFactoryImpl: Found source builder helloWorldSource in helloworld.HelloWorldSource
10/07/29 17:35:28 INFO conf.SinkFactoryImpl: Found sink builder helloWorldSink in helloworld.HelloWorldSink
10/07/29 17:35:28 INFO conf.SinkFactoryImpl: Found sink decorator helloWorldDecorator in helloworld.HelloWorldDecorator
"

For Node, it is correct.
For Master, it is not. Only after you config source and sink, you will see this log-- if you set up everything correctly.

I set up like this : FLUME_CONF_DIR = ./conf,
Master didn't load anything. After I check source code, and finally changed it to absolute path then I saw the log-- not when master startup(the user guide mislead me to think other things

Hope it helps.

Regards,
Anthony