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Mathematical Problems in Engineering
Volume 2013 (2013), Article ID 147593, 12 pages
Research Article

An Abstract Description Method of Map-Reduce-Merge Using Haskell

1College of Computer Science and Technology, Jilin University, Changchun 130012, China
2College of Mathematics, Jilin University, Changchun 130012, China

Received 17 May 2013; Accepted 17 July 2013

Academic Editor: William Guo

Copyright © 2013 Lei Liu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Map-Reduce-Merge is an improved parallel programming model based on Map-Reduce in cloud computing environment. Through the new Merge module, Map-Reduce-Merge can support processing multiple related heterogeneous datasets more efficiently. In order to demonstrate the validity and effectiveness of this new model, we present a rigorous description for Map-Reduce-Merge model using Haskell. Firstly, we describe the basic program skeleton of Map-Reduce-Merge programming model. Secondly, an abstract description for the Merge module is presented by analyzing the structure and function of the Merge module with Haskell as the description tool. Thirdly, we evaluate the Map-Reduce-Merge model on the basis of our description. We capture the functional characteristics of the Map-Reduce-Merge model by our abstract description, which can provide theoretical basis for designing more efficient parallel programming model to process join operation.