mr default=local?

[John Meza]

The default mode for hadoop is Standalone, PsuedoDistributed and Fully 
Distributed modes. It is configured for Psuedo and Fully Distributed via 
configuration file, but defaults to Standalone otherwise (correct?).
Question about the -defaulting- mechanism:    -Does it get the -default- 
configuration via one of the config files?    -Or does it get the -default- 
configuration via hard-coded values?    -Or another mechanism?
thanksJohn