Paxos-protocol-based distributed consistency system online capacity expanding and online capacity reducing method and device

Abstract

The invention provides a Paxos-protocol-based distributed consistency system online capacity expanding method comprising the steps that the preset number of new servers are additionally arranged on the basis of the original servers in the original Quorum; capacity expanding operation is performed on one new server; the capacity expanding operation comprises the following steps: the service processrelated to the distributed services is stopped; the configuration information of the capacity-expanded Quorum including all the original servers and the preset number of new servers is updated; the service process is started and Leader election for the capacity-expanded Quorum is initiated; the capacity expanding operation is performed for each original server apart from the Leader of the original Quorum and the capacity expanding operation is performed for the Leader of the original Quorum after completion; and the capacity expanding operation is performed on the new servers of which capacity expanding is not performed. The problems of the present cold capacity expanding method that the distributed system services are paused in the capacity expanding process can be solved. The inventionalso provides a Paxos-protocol-based distributed consistency system online capacity reducing method.

Description

technical field [0001] The present application relates to the technical field of distributed computing, in particular to a method and device for online capacity expansion of a distributed consensus system based on the Paxos protocol. The present application also relates to an online scaling method and device for a distributed consensus system based on the Paxos protocol. Background technique [0002] In a large-scale distributed scenario, client processes distributed on a large number of computing nodes usually need to rely on the mutual exclusion provided by the back-end distributed consistency system to synchronize access to a shared resource and prevent mutual interference to protect data. Distributed consistency. There are a large number of client processes using distributed consistency services in large-scale distributed computing systems. With the rapid growth of business scale, thousands or even more client processes will establish a large number of connections with...

AI Technical Summary

Problems solved by technology

[0004] This application provides an online expansion method and device for a distributed consensus system based on the Paxos protocol to solve the problem of suspending distributed system services during the expansion process in existing cold expansion methods

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