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https://dev.mysql.com/doc/refman/5.7/en/group-replication-tuning-recovery.html
Whenever a new member joins a replication group, it connects to a suitable donor and fetches the data that it has missed up until the point it is declared online. This critical component in Group Replication is fault tolerant and configurable. The ...If the connection to the selected donor fails, a new connection is automatically attempted to a new candidate ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-recovering-from-a-point-in-time.html
To synchronize the server joining the group with the donor up to a specific point in time, the server joining the group and donor make use of the MySQL Global Transaction Identifiers (GTIDs) mechanism. However, GTIDS only provide a means to realize ...View and View Changes To explain the concept of view change markers, it is important to understand what a view and a view change ...
https://dev.mysql.com/doc/refman/5.7/en/option-files.html
(For mysqld, use --verbose and --help.) If the program reads option files, the help message indicates which files it looks for and which option groups it recognizes. A “login path” is an option group that permits only certain options: host, ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-tp-thread-group-stats-table.html
The TP_THREAD_GROUP_STATS table has these columns: TP_GROUP_ID The thread group ID. This does not count statements that the thread group was able to begin executing immediately without queuing, which can happen under the conditions described in ...
https://dev.mysql.com/doc/refman/5.7/en/group-by-functional-dependence.html
The following discussion provides several examples of the ways in which MySQL detects functional dependencies. The examples use this notation: {X} -> {Y} Understand this as “X uniquely determines Y,” which also means that Y is functionally ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-deploying-in-multi-primary-or-single-primary-mode.html
Group Replication operates in the following different modes: single-primary mode multi-primary mode The default mode is single-primary. It is not possible to have members of the group deployed in different modes, for example one configured in ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-single-primary-mode.html
In this mode the group has a single-primary server that is set to read-write mode. All the other members in the group are set to read-only mode (with super-read-only=ON ). The primary is typically the first server to bootstrap the group, all other ...For example, changes to tables that have cascading foreign keys are allowed, whereas in multi-primary mode they are ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-replication-group-members-table.html
This table shows network and status information for replication group members. The network addresses shown are the addresses used to connect clients to the group, and should not be confused with the member's internal group communication address ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-data-manipulation-statements.html
As there are no primary servers (sources) for any particular data set, every server in the group is allowed to execute transactions at any time, even transactions that change state (RW transactions). But, at commit time, it coordinates with the ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-observability.html
There is a lot of automation built into the Group Replication plugin. This is where the instrumentation of Group Replication and Performance Schema becomes important. The distributed nature of the replication protocol and the fact that server ...