Online Reconfiguration in Replicated Databases Based on
Bettina Kemme, Alberto Bartoli, Ozalp Babaouglu
Over the last years, many replica control protocols have been
developed that take advantage of the ordering and reliability
semantics of group communication primitives to simplify database
system design and to improve performance. Although current solutions
are able to mask site failures effectively, many of them are unable
to cope with recovery of failed sites, merging of partitions, or
joining of new sites. This paper addresses this important issue. It
proposes efficient solutions for online system reconfiguration
providing new sites with a current state of the database without
interrupting transaction processing in the rest of the
system. Furthermore, the paper analyzes the impact of cascading
reconfigurations, and argues that they can be handled in an elegant
way by extended forms of group communication.
Proc. of the Int. Conf. on Dependable Systems and Networks (DSN
Goteborg, Sweden, June 2001.
Click to get the PostScript , Gzipped PostScript.