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For Oracle R Advanced Analytics for Hadoop to access the data stored in HDFS, what must the input files comply with?
Correct Answer: A
Explanation/Reference: All input files for a MapReduce job must be stored in one directory as the parts of one logical file. Any valid HDFS directory name and file name extensions are acceptable. References: https://docs.oracle.com/cd/E49465_01/doc.23/e49333/orch.htm#BDCUG397