write:¥ Retrieves results from HDFS. Figure 3.15 diagrams how Facebook uses database technology and Hadoop. IT at Work 3.3 describes how First Wind has applied big data analytics to im

Hadoop File System (HDFS)
which functions in three stages:¥ Loads data into HDFS.¥ Performs the MapReduce operations.¥ Retrieves results from HDFS.Figure 3.15 diagrams how Facebook uses database technology and Hadoop. IT at Work 3.3 describes how First Wind has applied big data analytics to improve the operations of its wind farms and to support sustainability of the planet by reducing environmentally damaging carbon emissions.© Kittichais/iStockphoto FIGURE 3.14 Machine-generated data from physical objects are becoming a much larger portion of big data and analytics.MySQL databases capture andstore FacebookÕs data.Results are transferred back intoMySQL for use in pages that areloaded for members. Members see customized Facebookpages.Data are loaded into Hadoop whereprocessing occurs
such as identifyingrecommendations for you based onyour friendsÕ interests. FIGURE 3.15 FacebookÕs MySQL database and Hadoop technology provide customized pages for its members.