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FT-PPTC: An Efficient and Fault-Tolerant Commit Protocol for Mobile Environments

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3 Author(s)
Ayari, B. ; Dept. of Comput. Sci., Technische Univ. Darmstadt ; Khelil, A. ; Suri, N.

Transactions are required not only for wired networks but also for the emerging wireless environments where mobile and fixed hosts participate side by side in the execution of the transaction. This heterogenous environment is characterized by constraints in mobile host capabilities, network connectivity and also an increasing number of possible failure modes. Classical atomic commit protocols used in wired networks are therefore not directly suitable for this heterogenous environment. Furthermore, the few commit protocols designed for mobile transactions either consider mobile hosts only as initiators though not as active participants, or show a high resource blocking time. We present the Fault-Tolerant Pre-Phase Transaction Commit (FT-PPTC) protocol for mobile environments. FT-PPTC decouples the commit of mobile participants from that of fixed participants. Consequently, the commit set can be reduced to a set of entities in the fixed network. Thus, the commit can easily be supported by any traditional atomic commit protocol, such as the established 2PC protocol. We integrate fault-tolerance as a key feature of FT-PPTC. Performance evaluations confirm the efficiency, scalability and low resource blocking time of our approach

Published in:

Reliable Distributed Systems, 2006. SRDS '06. 25th IEEE Symposium on

Date of Conference:

2-4 Oct. 2006

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