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The Hadoop MapReduce framework spawns one map task for each __________ generated by the InputFormat for the job.

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The Hadoop MapReduce framework spawns one map task for each __________ generated by the InputFormat for the job.

(a) OutputSplit

(b) InputSplit

(c) InputSplitStream

(d) All of the mentioned

I got this question in an interview.

Enquiry is from Mapreduce Development in chapter Developing a MapReduce Application of Hadoop

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The correct answer is (b) InputSplit

The best explanation: Mapper implementations are passed the JobConf for the job via the JobConfigurable.configure(JobConf) method and override it to initialize themselves.

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