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CCD-410 · Question #3
CCD-410 Question #3: Real Exam Question with Answer & Explanation
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Question
You are developing a MapReduce job for sales reporting. The mapper will process input keys representing the year (IntWritable) and input values representing product indentifies (Text). Indentify what determines the data types used by the Mapper for a given job.
Options
- AThe key and value types specified in the JobConf.setMapInputKeyClass and
- BThe data types specified in HADOOP_MAP_DATATYPES environment variable
- CThe mapper-specification.xml file submitted with the job determine the mapper's input key and value types.
- DThe InputFormat used by the job determines the mapper's input key and value types.
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