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https://dev.mysql.com/doc/refman/8.0/en/group-replication-bootstrap.html
The process of starting a group for the first time is called bootstrapping. The bootstrap should only be done by a single server, the one that starts the group and only once. This is why the value of the group_replication_bootstrap_group option was ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-configuring-consistency-guarantees.html
Transactions whose consistency level is not EVENTUAL hold execution until a timeout, configured by wait_timeout value is reached, which defaults to 8 hours. A transaction cannot be on-hold forever, and if the time held exceeds wait_timeout it ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-enterprise-backup.html
Rebuild the Failed Member to Rejoin as a New Member Sometimes, the steps outlined above in Restoring a Failed Member cannot be carried out because, for example, the binary log or relay log is corrupted, or it is just missing from the backup. First, ... MySQL Enterprise Backup is a commercially-licensed backup utility for MySQL Server, available with MySQL Enterprise ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-flow-control.html
MySQL Group Replication ensures that a transaction commits only after a majority of the members in a group have received it and agreed on the relative order amongst all transactions sent concurrently. This approach works well if the total number of ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-group-write-consensus.html
This section explains how to inspect and configure the maximum number of consensus instances at any time for a group. This maximum is referred to as the event horizon for a group, and is the maximum number of consensus instances that the group can ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-member-actions.html
Group Replication increments the version number for its member actions configuration each time a member action is enabled or disabled. From MySQL 8.0.26, Group Replication has the capability to set actions for the members of a group to take in ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-message-compression.html
The TCP peer-to-peer nature of the interconnections between N participants in the group makes the sender send the same amount of data N times. For messages sent between online group members, Group Replication enables message compression by default.
https://dev.mysql.com/doc/refman/8.0/en/group-replication-online-upgrade-combining-versions.html
However, while you are in the process of upgrading an online group, in order to maximize availability, you might need to have members with different MySQL Server versions running at the same time. Group Replication is versioned according to the ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-performance-message-fragmentation.html
You can also use the system variable group_replication_member_expel_timeout to allow additional time (up to an hour) before a member under suspicion of having failed is expelled from the group. When an abnormally large message is sent between Group ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-primary-secondary-replication.html
This means that the primary waits, at apply time, for the secondary to acknowledge that it has received the transaction. Traditional MySQL Replication provides a simple source to replica approach to replication. The source is the primary, and there ...