Middleware/application interactions to support adaptive dependability
MAI '07 Proceedings of the 1st workshop on Middleware-application interaction: in conjunction with Euro-Sys 2007
Exploiting commutativity for efficient replication in partitionable distributed systems
OTM'07 Proceedings of the 2007 OTM Confederated international conference on On the move to meaningful internet systems - Volume Part II
Self-adaptive and reconfigurable distributed computing systems
Applied Soft Computing
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The current standard for Fault-Tolerance in the Common Object Request Broker Architecture (CORBA) does not support network partitioning. However, distributed systems, and those deployed on wide area networks in particular, are susceptible to network partitions. The contribution of this paper is the description of the design and implementation of a CORBA fault-tolerance add-on for partitionable environments. Our solution can be applied to an off-the-shelf Object Request Broker, without having access to the ORB's source code and with minimal changes to existing CORBA applications. The system distinguishes itself from existing solutions in the way different replication and reconciliation strategies can be implemented easily. Furthermore, we provide a novel replication and reconciliation protocol that increases the availability of systems, by allowing operations in all partitions to continue.