MapReduce Cloud Computing Question:
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Can you explain what you understand by speculative execution?

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


Mapreduce works on the basis of large number of computers connected via a network also known as node. In a large network there is always a possibility that a system may not perform as quickly as others. This results in a task being delayed. By speculative execution this can be avoided as multiple instances of the same map are run on different systems.

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