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).
The following function opens a MIDI sequencer device, verifies that the MIDI Mapper was selected as the output port, plays the MIDI file specified by the lpszMIDIFileName parameter, and closes the device after playback is complete: