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논문 기본 정보

자료유형
학술저널
저자정보
Nguyen, Minh Hieu (Yonsei University) Ju, Sungha (Yonsei University) Ma, Jong Won (Yonsei University) Heo, Joon (Yonsei University)
저널정보
한국측량학회 한국측량학회지 한국측량학회지 제35권 제5호
발행연도
2017.10
수록면
405 - 414 (10page)

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초록· 키워드

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Spatial data processing often poses challenges due to the unique characteristics of spatial data and this becomes more complex in spatial big data processing. Some tools have been developed and provided to users; however, they are not common for a regular user. This paper presents a benchmark test between two notable tools of spatial big data processing: GIS Tools for Hadoop and SpatialHadoop. At the same time, a MapReduce application is introduced to be used as a baseline to evaluate the effectiveness of two tools and to derive the impact of number of maps/reduces on the performance. By using these tools and New York taxi trajectory data, we perform a spatial data processing related to filtering the drop-off locations within Manhattan area. Thereby, the performance of these tools is observed with respect to increasing of data size and changing number of worker nodes. The results of this study are as follows 1) GIS Tools for Hadoop automatically creates a Quadtree index in each spatial processing. Therefore, the performance is improved significantly. However, users should be familiar with Java to handle this tool conveniently. 2) SpatialHadoop does not automatically create a spatial index for the data. As a result, its performance is much lower than GIS Tool for Hadoop on a same spatial processing. However, SpatialHadoop achieved the best result in terms of performing a range query. 3) The performance of our MapReduce application has increased four times after changing the number of reduces from 1 to 12.

목차

Abstract
1. Introduction
2. Background
3. Experiment
4. Evaluation
5. Conclusion
References

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