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).
Depending on the operating system, ping utility output varies. 1  However, almost all ping outputs display the following: 2  Destination IP address. 3  ICMP sequence number. 4  Time to live (TTL) 5  Round-trip time. 6  Payload size. 7  The number of packets lost during transmission.