Declustering using fractals

C. Faloutsos, P. Bhagwat
[1993] Proceedings of the Second International Conference on Parallel and Distributed Information Systems  
We propose a method to achieve declustering for cartesian product les on M units. The focus is on range queries, as opposed to partial match queries that older declustering methods have examined. Our method uses a distance-preserving mapping, namely, the Hilbert curve, to impose a linear ordering on the multidimensional points (buckets); then, it traverses the buckets according to this ordering, assigning buckets to disks in a round-robin fashion. Thanks to the good distance-preserving
more » ... preserving properties of the Hilbert curve, the end result is that each disk contains buckets that are far away in the linear ordering, and, most probably, far away in the k-d address space. This is exactly the goal of declustering. Experiments show that these intuitive arguments lead indeed to good performance: the proposed method performs at least as well or better than older declustering schemes.
doi:10.1109/pdis.1993.253077 dblp:conf/pdis/FaloutsosB93 fatcat:3ujcndpl5jhnrioxhmcdlegtky