Global States of a Distributed System.
GEORGIA INST OF TECH ATLANTA SCHOOL OF INFORMATION AND COMPUTER SCIENCE
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A global state of a distributed transaction system is consistent if no transactions are in progress. A global checkpoint is a transaction which must view a globally consistent system state for correct operation. We present an algorithm for adding global checkpoint transactions to an arbitrary distributed transaction system. The algorithm is non-intrusive in the sense that checkpoint transactions do not interfere with ordinary transactions in progress however, the checkpoint transactions still produce meaningful results. Author
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