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OptEx: A Deadline-Aware Cost Optimization Model for Spark

We present OptEx, a closed-form model of job execution on Apache Spark, a popular parallel processing engine. To the best of our knowledge, OptEx is the first work that analytically models job completion time on Spark. The model can be used to estimate the completion time of a given Spark job on a cloud, with respect to the size of the input dataset, the number of iterations, the number of nodes comprising the underlying cluster. Experimental results demonstrate that OptEx yields a mean relative error of 6% in estimating the job completion time. Furthermore, the model can be applied for estimating the cost optimal cluster composition for running a given Spark job on a cloud under a completion deadline specified in the SLO (i.e., Service Level Objective). We show experimentally that OptEx is able to correctly estimate the cost optimal cluster composition for running a given Spark job under an SLO deadline with an accuracy of 98%.

preprint2016arXivOpen access
Subhajit SidhantaWojciech GolabSupratik Mukhopadhyay
Distributed, Parallel, and Cluster Computing
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Open access3 authors1 topic
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Subhajit SidhantaWojciech GolabSupratik Mukhopadhyay

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