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https://dev.mysql.com/doc/refman/8.4/en/group-replication-member-actions.html
A member that does not support member actions cannot join a group that has a member actions configuration, because its MySQL Server version is lower than the lowest version that the existing group members are running. Group Replication has the ...
https://dev.mysql.com/doc/refman/8.4/en/group-replication-multi-primary-mode.html
If a joining member is running a higher MySQL Server version than the lowest version that the existing group members are running, it joins the group but remains in read-only mode. In multi-primary mode (group_replication_single_primary_mode=OFF) no ...
https://dev.mysql.com/doc/refman/8.4/en/group-replication-network-partitioning.html
mysql> SELECT @@group_replication_local_address; Once you know the group communication addresses of s1 (127.0.0.1:10000) and s2 (127.0.0.1:10001), you can use that on one of the two servers to inject a new membership configuration, thus overriding ... The group needs to achieve consensus whenever a change that needs to be replicated ...
https://dev.mysql.com/doc/refman/8.4/en/group-replication-performance.html
One likely cause is that the joining member has extra transactions that are not present on the existing members of the group. Group Replication is designed to create fault-tolerant systems with built-in failure detection and automated recovery. If ...
https://dev.mysql.com/doc/refman/8.4/en/group-replication-plugin-architecture.html
MySQL Group Replication is a MySQL plugin and it builds on the existing MySQL replication infrastructure, taking advantage of features such as the binary log, row-based logging, and global transaction identifiers. It integrates with current MySQL ...
https://dev.mysql.com/doc/refman/8.4/en/group-replication-requirements.html
This enables Group Replication to carry out distributed recovery by state transfer from an existing group member's binary log. Infrastructure Server Instance Configuration Server instances that you want to use for Group Replication must satisfy the ...
https://dev.mysql.com/doc/refman/8.4/en/group-replication-responses-failure-partition.html
While a minority group exists, any transactions processed by the minority group are accepted, but blocked because the minority servers cannot reach quorum, until either STOP GROUP_REPLICATION is issued on those servers or the unreachable majority ...
https://dev.mysql.com/doc/refman/8.4/en/group-replication-single-primary-mode.html
The member that is designated as the primary server can change in the following ways: If the existing primary leaves the group, whether voluntarily or unexpectedly, a new primary is elected automatically. In single-primary mode ...
https://dev.mysql.com/doc/refman/8.4/en/group-replication-status-variables.html
They are reset on group bootstrap, joining of a new member, automatic rejoin of an existing member, and server restart. This section describes the status variables providing information about Group Replication. The status variables and their ...
https://dev.mysql.com/doc/refman/8.4/en/group-replication-view-changes.html
During a remote cloning operation, the existing data on the joining member is removed, and replaced with a copy of the donor's data. When Group Replication's distributed recovery process is carrying out state transfer from the binary log, to ...