Journal Title : International Journal of Modern Trends in Engineering and Science

Author’s Name : S.Deepa | K.Dhanusha | K.Revathi  unnamed

Volume 03 Issue 07 2016

ISSN no:  2348-3121

Page no: 27-31

Abstract – The MapReduce encoding models simplifies large-scale data processing on commodity cluster by exploiting parallel map tasks and reduce tasks. Although many hard work have been made to improve the recital of MapReduce jobs, they ignore the network traffic generated in the mix up phase, which plays a critical role in recital augmentation. Traditionally, a hash function is used to partition in-between data among reduce tasks, which, however, is not traffic-efficient because network topology and data size connected with each key are not taken into consideration. In this paper, we study to decrease network traffic cost for a MapReduce job by designing a novel intermediate data partition scheme. Furthermore, we jointly consider the aggregator position problem, where each aggregator can reduce merged traffic from multiple map tasks. A decomposition-based dispersed algorithm is proposed to deal with the large-scale optimization problem for big data function and an online algorithm is also designed to adjust data partition and aggregation in a dynamic manner. Finally, wide simulation results demonstrate that our proposals can significantly decrease network traffic cost under both offline and online cases. 

Keywords— Map Reduce, Network Cost, Partition, Online Algorithm, Hash Function 


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