분산환경에서의 데이터 가용성 향상을 위한 HQC 구조의 재고성 방법

A Reconstruction Method of HQC structure for Improving Availability of Data in Distributed Environment

  • 유현창 (고려대학교 전산과학과) ;
  • 조동영 (전주대학교 전자계산학과) ;
  • 손진곤 (한국방송통신대학교 전자계산학과) ;
  • 황종선 (고려대학교 전산과학과)
  • 발행 : 1994.02.01

초록

In distributed environments, data replication increases availability and decreases communication cost. However, it is difficult to maintain consistency and availability of data if site failure occurs. When we use the conventional hierarchical quorum consensus(HQC) method in order to maintain the consistency of data, occurrence of site failures makes it harder to perform the operation on replicated data because of insufficient votes. The objective of this paper is to improve the possibility of retaining necessary votes by reconstructing the HQC structure, when the site failure occurs. Furthermore, we compare the modified HQC method with the conventional HQC and QC methods in terms of improvement of availability.

키워드