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Question

What determines which Reduce instance consumes output records with the same hash value from the Map phase?

a.

The MapReduce scheduler

b.

The number of Map instances

c.

The size of the input data set

d.

The Map instance that produced the data

Posted under Big Data Computing

Answer: (a).The MapReduce scheduler Explanation:The MapReduce scheduler determines which Reduce instance consumes output records with the same hash value from the Map phase.

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Q. What determines which Reduce instance consumes output records with the same hash value from the Map phase?
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