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).
In the Save vector layer as... dialog, enter the name of the output file as london_pubs.shp. Leave all other options as they are and make sure the Add saved file to map option is checked. Click OK. You will see a new layer named london_pubs in the QGIS canvas. Uncheck the london_points layer as we donât need that anymore.