An efficient fault-tolerant decentralized commit protocol for single site failure |
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Authors: | Shyan-Ming Yuan |
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Affiliation: | (1) Advanced Technology Center Electronics Research & Service Organization, Industrial Technology Research Institute, Taiwan, Republic of China 31015 |
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Abstract: | To maintain consistency on a distributed database system, a commit protocol is often employed to ensure that either all the sub-transactions of a transaction commit or all abort. Special care needs to be taken to ensure the correct functioning of a commit protocol in the face of node failures during the execution of the protocol. A protocol is said to be fault-tolerant if it properly commits or aborts, even if nodes fail.In this paper, we present a fault tolerant decentralized commit protocol which is message optimal in the absence of failures. Furthermore, the protocol (FTDCP) ensures that all sites can achieve a consistent final decision by at most 4 extra messages in the single site failure situation. |
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