Hortonworks Exam HDPCD Topic 2 Question 49 Discussion

Actual exam question for Hortonworks's HDPCD exam

Question #: 49
Topic #: 2

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.

AThe key and value types specified in the JobConf.setMapInputKeyClass and JobConf.setMapInputValuesClass methods

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.

Show Suggested Answer

Suggested Answer: A

by Lezlie at Jan 26, 2024, 08:12 PM

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