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https://dev.mysql.com/doc/refman/5.7/en/group-replication-limitations.html
If further members attempt to join the group, their request is refused. Note that the limitations and issues described for multi-primary mode groups can also apply in single-primary mode clusters during a failover event, while the newly elected ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-multi-primary-mode.html
Figure 17.6 Client Failover All servers are set to read-write mode when joining the group. In multi-primary mode, there is no notion of a single primary. There is no need to engage an election procedure because there is no server playing any ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-plugin-architecture.html
The recovery component manages distributed recovery, and is responsible for getting a server that is joining the group up to date by selecting the donor, orchestrating the catch up procedure and reacting to donor failures. MySQL Group Replication ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-replication-group-members.html
The information in the table is updated whenever there is a view change, for example when the configuration of the group is dynamically changed when a new member joins. The performance_schema.replication_group_members table is used for monitoring ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-single-primary-mode.html
The primary is typically the first server to bootstrap the group, all other servers that join automatically learn about the primary server and are set to read only. In this mode the group has a single-primary server that is set to read-write mode.
https://dev.mysql.com/doc/refman/5.7/en/group-replication-usage-advice-and-limitations-of-distributed-recovery.html
It is based on classic asynchronous replication and as such it may be slow if the server joining the group is not provisioned at all or is provisioned with a very old backup image. This means that if the data to transfer is too big at phase 1, the ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-use-cases.html
There is a distributed recovery procedure to ensure that when servers join the group they are brought up to date automatically. Group Replication enables you to create fault-tolerant systems with redundancy by replicating the system state to a set ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication.html
Servers can leave and join the group and the view is updated accordingly. This chapter explains MySQL Group Replication and how to install, configure and monitor groups. MySQL Group Replication is a MySQL Server plugin that enables you to create ...
https://dev.mysql.com/doc/refman/5.7/en/gtid-functions.html
The union of two GTID sets is simply their representations as strings, joined together with an interposed comma. The functions described in this section are used with GTID-based replication. It is important to keep in mind that all of these ...
https://dev.mysql.com/doc/refman/5.7/en/index-extensions.html
The optimizer can use extended secondary indexes for ref, range, and index_merge index access, for Loose Index Scan access, for join and sorting optimization, and for MIN()/MAX() optimization. InnoDB automatically extends each secondary index by ...