Cloudera
CCD-333 · Question #8
Does the MapReduce programming model provide a way for reducers to communicate with each other?
The correct answer is D. No, each reducer runs independently and in isolation. See the full explanation below for the reasoning.
Question
Does the MapReduce programming model provide a way for reducers to communicate with each other?
Options
- AYes,all reducers can communicate with each other by passinginformation through the jobconf
- BYes,reducers can communicate with each other by dispatchingintermediate key value pairs
- CYes,reducers running on the same machine can communicatewith each other through shared
- DNo, each reducer runs independently and in isolation.
How the community answered
(21 responses)- A14% (3)
- B5% (1)
- C5% (1)
- D76% (16)
Community Discussion
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