MySQL :: MySQL 8.4 Reference Manual :: 29.12.11.2 The replication_applier_configuration Table (original) (raw)

29.12.11.2 The replication_applier_configuration Table

This table shows the configuration parameters that affect transactions applied by the replica. Parameters stored in the table can be changed at runtime with theCHANGE REPLICATION SOURCE TO statement.

Thereplication_applier_configuration table has these columns:

• CHANNEL_NAME
  The replication channel which this row is displaying. There is always a default replication channel, and more replication channels can be added. SeeSection 19.2.2, “Replication Channels” for more information.
• DESIRED_DELAY
  The number of seconds that the replica must lag the source (CHANGE REPLICATION SOURCE TO option:SOURCE_DELAY). SeeSection 19.4.11, “Delayed Replication” for more information.
• PRIVILEGE_CHECKS_USER
  The user account that provides the security context for the channel (CHANGE REPLICATION SOURCE TO option:PRIVILEGE_CHECKS_USER). This is escaped so that it can be copied into an SQL statement to execute individual transactions. SeeSection 19.3.3, “Replication Privilege Checks” for more information.
• REQUIRE_ROW_FORMAT
  Whether the channel accepts only row-based events (CHANGE REPLICATION SOURCE TO option:REQUIRE_ROW_FORMAT). SeeSection 19.3.3, “Replication Privilege Checks” for more information.
• REQUIRE_TABLE_PRIMARY_KEY_CHECK
  Whether the channel requires primary keys always, never, or according to the source's setting (CHANGE REPLICATION SOURCE TO option:REQUIRE_TABLE_PRIMARY_KEY_CHECK). SeeSection 19.3.3, “Replication Privilege Checks” for more information.
• ASSIGN_GTIDS_TO_ANONYMOUS_TRANSACTIONS_TYPE
  Whether the channel assigns a GTID to replicated transactions that do not already have one (CHANGE REPLICATION SOURCE TO option:ASSIGN_GTIDS_TO_ANONYMOUS_TRANSACTIONS).OFF means no GTIDs are assigned.LOCAL means a GTID is assigned that includes the replica's own UUID (theserver_uuid setting).UUID means a GTID is assigned that includes a manually set UUID. SeeSection 19.1.3.6, “Replication From a Source Without GTIDs to a Replica With GTIDs” for more information.
• ASSIGN_GTIDS_TO_ANONYMOUS_TRANSACTIONS_VALUE
  The UUID that is used as part of the GTIDs assigned to anonymous transactions (CHANGE REPLICATION SOURCE TO option:ASSIGN_GTIDS_TO_ANONYMOUS_TRANSACTIONS). See Section 19.1.3.6, “Replication From a Source Without GTIDs to a Replica With GTIDs” for more information.

Thereplication_applier_configuration table has these indexes:

• Primary key on (CHANNEL_NAME)

TRUNCATE TABLE is not permitted for thereplication_applier_configuration table.

The following table shows the correspondence betweenreplication_applier_configuration columns andSHOW REPLICA STATUS columns.