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Some Experimental Results on Distributed Join Algorithms in a Local Network.

Hongjun Lu, Michael J. Carey: Some Experimental Results on Distributed Join Algorithms in a Local Network. VLDB 1985: 292-304
@inproceedings{DBLP:conf/vldb/LuC85,
  author    = {Hongjun Lu and
               Michael J. Carey},
  editor    = {Alain Pirotte and
               Yannis Vassiliou},
  title     = {Some Experimental Results on Distributed Join Algorithms in a
               Local Network},
  booktitle = {VLDB'85, Proceedings of 11th International Conference on Very
               Large Data Bases, August 21-23, 1985, Stockholm, Sweden},
  publisher = {Morgan Kaufmann},
  year      = {1985},
  pages     = {292-304},
  ee        = {http://www.vldb.org/conf/1985/P292.PDF},
  crossref  = {DBLP:conf/vldb/85},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

Abstract

This paper presents some experimental results on the performance of distributed join algorithms in a local network. Eight different join methods have been implemented in an experimental distributed system, the Crystal multicomputer, and tested for join queries with a variety of relation sizes, join selectivities, and join column value distributions. The results obtained indicate that pipelined join methods outperform sequential methods over a wide range of join queries. It was also found that the communications costs in a local network environment are not a dominant factor with respect to performance, and that shipping a whole relation from one site to another is not an unreasonahle decison as long as it is done in the framework of pipelined algorithms. Two pipelined variants of a centralized nested loops join algorithm (with an index) were found to perform well for many of the queries tested.

Copyright © 1985 by the VLDB Endowment. Permission to copy without fee all or part of this material is granted provided that the copies are not made or distributed for direct commercial advantage, the VLDB copyright notice and the title of the publication and its date appear, and notice is given that copying is by the permission of the Very Large Data Base Endowment. To copy otherwise, or to republish, requires a fee and/or special permission from the Endowment.


Printed Edition

Alain Pirotte, Yannis Vassiliou (Eds.): VLDB'85, Proceedings of 11th International Conference on Very Large Data Bases, August 21-23, 1985, Stockholm, Sweden. Morgan Kaufmann 1985
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