Weiping Zheng
South China Normal University

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Journal : Indonesian Journal of Electrical Engineering and Computer Science

A Privacy Data-Oriented Hierarchical MapReduce Programming Model Haiwen Han; Weiping Zheng
Indonesian Journal of Electrical Engineering and Computer Science Vol 11, No 8: August 2013
Publisher : Institute of Advanced Engineering and Science

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Abstract

To realize privacy data protection efficiently in hybrid cloud service, a hierarchical control architecture based multi-cluster MapReduce programming model (the Hierarchical MapReduce Model,HMR) is presented. Under this hierarchical control architecture,  data isolation and placement among private cloud and public clouds according to the data privacy characteristic is implemented by the control center in private cloud.  And then, to perform the corresponding distributed parallel computation correctly under the multi-clusters mode that is different to the conventional single-cluster mode, the Map-Reduce-GlobalReduce three stage scheduling process is designed. Limiting the computation about privacy data in private cloud while outsourcing the computation about non-privacy data to public clouds as much as possible, HMR reaches the performance of both security and low cost. DOI: http://dx.doi.org/10.11591/telkomnika.v11i8.3083 
An Improved-Hash Based Multi Dimensional Distributed Index Mechanism Haiwen Han; Deyu Qi; Weiping Zheng
Indonesian Journal of Electrical Engineering and Computer Science Vol 11, No 4: April 2013
Publisher : Institute of Advanced Engineering and Science

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Abstract

Data partition and the accordingly index technologies which could result in uniform data distribution and fast data finding are critical in high parallelism for shared nothing architecture to minimize the transaction processing time. An improved-hash based multi dimensional index mechanism is present in this paper to achieve high parallelism performance for distributed data-parallel computation in shared nothing architecture. After partitioning and storing data using improved-hash function based on partitioning column, the multi dimensional indexes based on multi columns and the corresponding data lookup procedure are constructed. Afterwards, the space complexity and time complexity are analyzed. DOI: http://dx.doi.org/10.11591/telkomnika.v11i4.2359