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).
Microsoft's Sound Mapper (which sometimes appears in audio applications as 'MME-WDM Microsoft Sound Mapper' or simply 'Wave Mapper') often becomes the default driver for both audio playback and recording after you install a new audio application, and it may if you've recently installed a new audio interface.