Question -
__________ is the primary interface for a user to describe a MapReduce job to the Hadoop framework for execution.
Options:
A .  JobConfig
B .  JobConf
C .  JobConfiguration
D .  All of the mentioned
Answer: Option B
JobConf is typically used to specify the Mapper, combiner (if any), Partitioner, Reducer, InputFormat, OutputFormat and OutputCommitter implementations.
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