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A _______________ action can be configured to perform file system cleanup and directory creation before starting the mapreduce job.

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A _______________ action can be configured to perform file system cleanup and directory creation before starting the mapreduce job.

(a) map

(b) reduce

(c) map-reduce

(d) none of the mentioned

The question was posed to me in quiz.

The origin of the question is Oozie with Hadoop topic in section Oozie, Orchestration, Hadoop Libraries and Utilities and Miscellaneous Hadoop Applications of Hadoop

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Right choice is (c) map-reduce

For explanation I would say: The map-reduce action starts a Hadoop map/reduce job from a workflow.

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