Question

Does MapReduce programming model provide a way for reducers to communicate with each other? In a MapReduce job can a reducer communicate with another reducer?

1. Yes.
2. No.

Answer 1

No, the MapReduce programming model does not allow reducers to directly communicate with each other.

Step-by-step explanation:

No, the MapReduce programming model does not provide a direct way for reducers to communicate with each other. Each reducer works independently and processes a subset of the intermediate key-value pairs emitted by the mappers. The output of each reducer is stored in separate files, and there is no built-in mechanism for reducers to exchange data or coordinate with each other.