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To set an environment variable in a streaming command use ____________

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To set an environment variable in a streaming command use ____________

(a) -cmden EXAMPLE_DIR=/home/example/dictionaries/

(b) -cmdev EXAMPLE_DIR=/home/example/dictionaries/

(c) -cmdenv EXAMPLE_DIR=/home/example/dictionaries/

(d) -cmenv EXAMPLE_DIR=/home/example/dictionaries/

I got this question by my college director while I was bunking the class.

The above asked question is from Hadoop Streaming topic in chapter Mapreduce of Hadoop

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Correct answer is (c) -cmdenv EXAMPLE_DIR=/home/example/dictionaries/

For explanation I would say: Environment Variable is set using cmdenv command.

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