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Distributed CIF Quadtree Indexing Method Based on Hadoop

  

  1. 1. College of Computer and Information, Hohai University, Nanjing 211100, China;
    2. The 28th Research Institute of China Electronics Technology Group Corporation, Nanjing 210007, China
  • Received:2016-05-06 Online:2016-11-15 Published:2016-11-23

Abstract:  We design some algorithms about parallel index creation, intersection query and regional remove for the rectangle objects, which are suitable for the distributed environment. These algorithms rely on the methods of dividing the data space, as well as the idea of divide-and-conquer. And they are based on the CIF indexing techniques supported by the Hadoop platform and the MapReduce programming model. On this basis, we test the parallel index creation and intersection queriess efficiency by changing the size of data sets of rectangle objects and the number of the map tasks. The experiments results show that using parallel algorithms of the parallel index creation and intersection queries can improve the processing efficiency for large data sets.

Key words:  , Hadoop;MapReduce; CIF quadtree; distributed environment; parallel algorithm

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