MapReduce Cloud Computing Question:

What is combiners?

Cloud Computing - MapReduce Interview Question
Cloud Computing - MapReduce Interview Question

Answer:

Combiners codes are used to increase the efficiency of a mapreduce process. They basically help by reducing the amount of data that needs to be shifted across to reducers. As a safe practice the mapreduce jobs should never depend upon combiners execution.


Previous QuestionNext Question
Explain the purpose of the Partition function in mapreduce framework?Can you explain what you understand by speculative execution?