Question: What is the function of mapping inside MapReduce? Group of answer choices It is a checking step to make sure the subsequent steps can be

What is the function of mapping inside MapReduce?
Group of answer choices
It is a checking step to make sure the subsequent steps can be executed
It shows the overall process of MapReduce
It connects splitting step and reducing step
It transforms the input data into the {key, value} which can reflect and lead to solving the mission problem of the BDA

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