Traffic-Aware Partition and Aggregation for Big Data Applications in Map-Reduce

The Map Reduce programming model simpli?es large-scale data processing on commodity cluster by exploiting parallel map tasks and reduces tasks. Map Reduce is a programming model and an associated implementation for processing and generating big data sets with a parallel, distributed algorithm on a cluster .Although many efforts have been made to improve the performance of Map Reduce jobs, they ignore the network traffic generated in the shuffle phase, which plays a critical role in performance enhancement. Traditionally, a hash function is used to partition intermediate data among reduce tasks, which, however, is not traffic - efficient because network topology and data size associated with each key are not taken into consideration. The objective of this system is to reduce the network traffic cost for a map reduce job by designing a intermediate data partition scheme.