Declustering large multidimensional data sets for range queries over heterogeneous disks

Jonghyun Lee, M. Winslett, Xiaosong Ma, Shengke Yu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Declustering is a technique to distribute data sets over multiple disks so that future retrievals can be well balanced over the disks and be performed in parallel. Although clusters often have heterogeneous disks, most declustering work has focused only on homogeneous environments. In this work, we investigate the declustering problem for a heterogeneous disk environment using virtual servers, and propose approaches for deciding the number of virtual servers and the mapping between virtual servers and physical disks. Our experimental results show that by combining our algorithm for choosing the number of virtual servers with a greedy algorithm for mapping virtual servers to disks, users can expect range query retrieval performance within 4% of the optimum achievable in practice on average, in all configurations studied. Compared to an intuitively natural approach to the problem, this represents an improvement of 8-31% in average fetch ratio, as well a 26-38% reduction in the standard deviation of performance for small queries.

Original languageEnglish
Title of host publicationProceedings of the International Conference on Scientific and Statistical Database Management, SSDBM
PublisherIEEE Computer Society
Pages212-221
Number of pages10
Volume2003-January
ISBN (Print)0769519644
DOIs
Publication statusPublished - 2003
Externally publishedYes
Event15th International Conference on Scientific and Statistical Database Management, SSDBM 2003 - Cambridge, United States
Duration: 9 Jul 200311 Jul 2003

Other

Other15th International Conference on Scientific and Statistical Database Management, SSDBM 2003
CountryUnited States
CityCambridge
Period9/7/0311/7/03

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Keywords

  • Aggregates
  • Bandwidth
  • Computer science
  • Data visualization
  • Databases
  • Greedy algorithms
  • Image retrieval
  • Information retrieval
  • Multidimensional systems
  • Throughput

ASJC Scopus subject areas

  • Software
  • Information Systems

Cite this

Lee, J., Winslett, M., Ma, X., & Yu, S. (2003). Declustering large multidimensional data sets for range queries over heterogeneous disks. In Proceedings of the International Conference on Scientific and Statistical Database Management, SSDBM (Vol. 2003-January, pp. 212-221). [1214982] IEEE Computer Society. https://doi.org/10.1109/SSDM.2003.1214982