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Which of the following Hadoop streaming command option parameter is required?

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Which of the following Hadoop streaming command option parameter is required?

(a) output directoryname

(b) mapper executable

(c) input directoryname

(d) all of the mentioned

This question was addressed to me by my college director while I was bunking the class.

I want to ask this question from Hadoop Streaming topic in chapter Mapreduce of Hadoop

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Correct answer is (d) all of the mentioned

For explanation I would say: Required parameters are used for Input and Output location for the mapper.

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