Figure 10-14 describes a simple Hadoop architecture. If a real-world system is implemented using this approach, it will suffer from a specific weakness. Identify what this weakness is and find out what the latest versions of Hadoop have done to address it.

Figure 10-14

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Masters Slaves MapReduce Engine Job Tracker Task Tracker 1 Data Node 1 Task Tracker 2 Data Node 2 HDFS Cluster Name Node Task Tracker n Data Node n