Point Out The Wrong Statement #546
Point out the wrong statement.
This multiple choice question (MCQ) is related to the book/course gs gs112 MongoDB. It can also be found in gs gs112 Aggregation Concepts and Aggregation Mechanics - Map-Reduce - Quiz No.1.
Point out the wrong statement.
If the output collection does not exist, MongoDB creates and shards the collection on the _id field
Map-reduce supports operations on sharded collections, both as an input and as an output
mongos dispatches, in parallel, a map-reduce post-processing job to every shard that owns a chunk
None of the mentioned
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