MapReduce Cloud Computing Question:
Download Questions PDF

Explain the purpose of the Partition function in mapreduce framework?

Answer:

In mapreduce framework each map function generates key values. The partition function accepts these key values and in return provides the index for a reduce. Generally the key is hashed and a modulo is done to the number of reducers.

Download Cloud Computing - MapReduce Interview Questions And Answers PDF

Previous QuestionNext Question
Tell me what is an input reader in reference to mapreduce?What is combiners?