Hi experts, >From the configuration guide (http://archive.cloudera.com/cdh/3/whirr/configuration-guide.html), it seems that some properties' defaults are none. What does the "none" mean? For whirr.location-id, for example, it says "an arbitrary location". What does this "arbitrary location" mean? Is it possible to use whirr in our private clusters? Then, what should be the value of whirr.provider if I don't install hadoop on EC2? What about other properties like whirr.image-id, whirr.hardware-id, etc? Any reference configurations for installing hadoop other tnan EC2 using whirr?
Thanks, Manhee