Fat-Btree: An Update-Conscious Parallel Directory Structure

  • Authors:
  • Affiliations:
  • Venue:
  • ICDE '99 Proceedings of the 15th International Conference on Data Engineering
  • Year:
  • 1999

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Abstract

We propose a parallel directory structure, Fat Btree,to improve high speed access for parallel database systems in shared nothing environments. The Fat Btree has a three fold aim: to provide an indexing mechanism for fast retrieval in each processor, to balance the amount of data among distributed disks, and to reduce synchronization costs between processors during update operations. We use a probability based model to compare the throughput and response time of the Fat Btree with two ordinary parallel Btree structures, with copies of a whole Btree in each processor, and storing index nodes in a processor. The comparison results indicate that the Fat Btree is suitable for actual parallel database systems that accept update operations.