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MySQL 8.4 Reference Manual  /  ...  /  Group Replication Communication Protocol Version

20.8.1.2 Group Replication Communication Protocol Version

A replication group uses a Group Replication communication protocol version that differs from the MySQL Server version of the members. To check the group's communication protocol version, issue the following statement on any member:

SELECT @@version, group_replication_get_communication_protocol();
+------------------------------------------------------------+
| @@version | group_replication_get_communication_protocol() |
+------------------------------------------------------------+
| 8.4.0     | 8.0.27                                         |
+------------------------------------------------------------+

As demonstrated, the MySQL 8.4 LTS series uses the 8.0.27 communication protocol.

For more information, see Section 20.5.1.4, “Setting a Group's Communication Protocol Version”.