D. Sasi Redkha , T.N. Ranganadham , Dr. M. Rudra Kumar. “Big Data Cluster Processing Through Optimized Speculative Execution”. International Journal of Emerging Trends in Science and Technology, vol. 4, no. 09, Sept. 2017, pp. 5891-7, http://ijetst.in/index.php/ijetst/article/view/1389.