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The output of the reduce function may pass through a ______ function to further condense or process the results of the aggregation.

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The output of the reduce function may pass through a ______ function to further condense or process the results of the aggregation.

(a) finalize

(b) filter

(c) procedure

(d) none of the mentioned

I got this question in final exam.

Question is taken from Map-Reduce topic in section Aggregation Concepts and Aggregation Mechanics of MongoDB

1 Answer

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Correct choice is (a) finalize

To explain I would say: The input and the output collections may be sharded.

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