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AssigneeMicrosoft Corporation
InventorsRui Wang, Michael E. Habben, Qun Guo, Peter Byrne, Robin D. Dhamankar, Vishal Kathuria, Mahesh K. Sreenivas, Yixue Zhu, Xiaowei Jiang
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Architecture that addresses an end-to-end solution for logical transactional replication from a shared-nothing clustered database management system, which uses adaptive cloning for high availability. This can be time based using a global logical timestamp. The disclosed architecture, used for refreshing stale clones, does not preserve user transaction boundaries, which is a more complex situation than where the boundaries are preserved. In such a scenario it is probable that for a given data segment no clone of the segment may contain the complete user transaction history, and hence, the history has to be pieced together from the logs of multiple different clones. This is accomplished such that log harvesting is coordinated with the clone state transitions to ensure the correctness of logical replication.
A computer-implemented database management method performed by a computer system executing machine-readable instructions, the method comprising acts of:
A computer-implemented database management system having computer readable media that store executable instructions executed by a processor, comprising:
A computer-readable storage memory having computer-executable instructions, which when executed perform actions, comprising:
Dependencies are inferred from the claim text.