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MySQL 8.0 Reference Manual  /  ...  /  Commands for Operations on a Single Channel

17.2.3.1 Commands for Operations on a Single Channel

To enable MySQL replication operations to act on individual replication channels, use the FOR CHANNEL channel clause with the following replication statements:

An additional channel parameter is introduced for the following function:

The following statements are disallowed for the group_replication_recovery channel:

The following statements are disallowed for the group_replication_applier channel:

FLUSH RELAY LOGS is now permitted for the group_replication_applier channel, but if the request is received while a transaction is being applied, the request is performed after the transaction ends. The requester must wait while the transaction is completed and the rotation takes place. This behavior prevents transactions from being split, which is not permitted for Group Replication.