Optimization processing method for raft in point-to-point failure
A processing method, point-to-point technology, applied in the field of distributed systems, to avoid circular elections and reduce system overhead
Active Publication Date: 2020-08-25
广州锦行网络科技有限公司
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- Description
- Claims
- Application Information
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Problems solved by technology
[0016] 1. If in the current cluster, the communication between the leader node and a follower node fails, but the communication between other follower nodes and between the leader node and other follower nodes is normal, then there will be communication between the two nodes involved in the communication failure. Round-robin elections, generating unnecessary system overhead
Method used
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Embodiment 1
[0062] The present invention provides a raft optimization processing method when a point-to-point failure occurs. The point-to-point failure is a communication failure between the leader node and a follower node in the cluster, and the leader node and other follower nodes and all Communication between follower nodes is normal. The following example takes a distributed cluster with 5 nodes as an example. The leader node is leader a, and the follower nodes are follower b, follower c, follower d, and follower e respectively. At this time, the tenure of each node The terms are assumed to be 3, that is, term=3. A communication failure occurs between the leader node leader a and the follower node follower b, combined below figure 2 The method is described in detail, and the method includes the following steps:
[0063] S1: The leader node leader a sends heartbeat packets to all follower nodes follower b, follower c, follower d and follower e;
[0064] S2: The following node follo...
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The invention provides an optimization processing method for raft when a point-to-point fault occurs, and relates to the field of distributed systems. The method comprises the following steps: S1, enabling a leader node to send heartbeat packets to all following nodes; S2, determining the following node which cannot receive the heartbeat packet of the leader node in an overtime manner as the following node involved in the fault; S3, enabling the following node related to the fault determined in the S2 to send a message to other following nodes to inquire the state of the leader node; S4, enabling the following node receiving the inquiry message to detect the state of the leader node; S5, enabling the following node receiving the inquiry message to send a message containing the state of theleader node to the following node involved in the fault; S6, enabling the following node involved in the fault to initiate election or not to initiate election according to the received message. According to the invention, the problem of cyclic election of two nodes related to a fault during a point-to-point fault is avoided.
Description
technical field [0001] The invention relates to the field of distributed systems, in particular to a raft optimization processing method when a point-to-point fault occurs. Background technique [0002] With the development of big data, the load of major websites is getting higher and higher. In this case, it is necessary to increase the bearing capacity of the server. Generally, there are two ways to solve the problem of improving the carrying capacity: one is to upgrade the server; the other is to increase the server. Adding servers refers to server clusters, so that new servers can be dynamically added to the cluster, which is more convenient for management; at the same time, servers can communicate with each other, and it has a monitoring mechanism. If one server fails, another The server takes over automatically, with high fault tolerance. In a distributed system, work tasks can be distributed to multiple servers that can be used in the most effective way, which impro...
Claims
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Login to View More IPC IPC(8): H04L29/08H04L12/24
CPCH04L41/0631H04L41/0654H04L67/10
Inventor 马俊
Owner 广州锦行网络科技有限公司