MySQL 8.4 Release Notes
        
The functions described in the following sections are used with MySQL Replication.
Table 14.24 Replication Functions
| Name | Description | Deprecated | 
|---|---|---|
| asynchronous_connection_failover_add_managed() | Add group member source server configuration information to a replication channel source list | |
| asynchronous_connection_failover_add_source() | Add source server configuration information server to a replication channel source list | |
| asynchronous_connection_failover_delete_managed() | Remove a managed group from a replication channel source list | |
| asynchronous_connection_failover_delete_source() | Remove a source server from a replication channel source list | |
| asynchronous_connection_failover_reset() | Remove all settings relating to group replication asynchronous failover | |
| group_replication_disable_member_action() | Disable member action for event specified | |
| group_replication_enable_member_action() | Enable member action for event specified | |
| group_replication_get_communication_protocol() | Get version of group replication communication protocol currently in use | |
| group_replication_get_write_concurrency() | Get maximum number of consensus instances currently set for group | |
| group_replication_reset_member_actions() | Reset all member actions to defaults and configuration version number to 1 | |
| group_replication_set_as_primary() | Make a specific group member the primary | |
| group_replication_set_communication_protocol() | Set version for group replication communication protocol to use | |
| group_replication_set_write_concurrency() | Set maximum number of consensus instances that can be executed in parallel | |
| group_replication_switch_to_multi_primary_mode() | Changes the mode of a group running in single-primary mode to multi-primary mode | |
| group_replication_switch_to_single_primary_mode() | Changes the mode of a group running in multi-primary mode to single-primary mode | |
| MASTER_POS_WAIT() | Block until the replica has read and applied all updates up to the specified position | Yes | 
| SOURCE_POS_WAIT() | Block until the replica has read and applied all updates up to the specified position | |
| WAIT_FOR_EXECUTED_GTID_SET() | Wait until the given GTIDs have executed on the replica. |