⟩ Can you please explain in MapReduce what is a scarce system resource?
A scarce resource is one which is available in limited quantities for the system. In mapreduce the network band-with is a scarce resource. It is conserved by making use of local disks and memory in cluster to store data during tasks. The function uses the location of the input files into account and aims to schedule a task on a system which has the input files.