Earning Points. Starwood's Preferred Guest program is fairly straightforward: the more nights you spend at participating hotels, the faster you'll earn a free night.
As seen in the EXECUTING phase, the map will write (using Mapper.Context.write()) its output into a circular in-memory buffer (MapTask.MapOutputBuffer). The size of this buffer is fixed and determined by the configuration parameter mapreduce.task.io.sort.mb (default: 100MB).
Modify the GenerateMaps.bat file. This will invoke the command line version of the GPS Mapper utility. As some point in the future I will probably turn this into a Makefile as I intend to build up a library of maps and I don't want to have to rebuild all of them each time I change a PLT or WPT file.