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# Set up Semi-Sync with rpl_semi_sync_master_wait_no_slave=0
include/master-slave.inc
[connection master]
SET @@GLOBAL.rpl_semi_sync_master_enabled= 1;
SET @@GLOBAL.rpl_semi_sync_master_wait_no_slave= 0;
connection slave;
SET @@GLOBAL.rpl_semi_sync_slave_enabled= 1;
include/start_slave.inc
connection master;
connection slave;
connection master;
SELECT ID INTO @binlog_dump_tid
FROM information_schema.PROCESSLIST WHERE COMMAND = 'Binlog Dump';
# Control State
SELECT STATE FROM information_schema.PROCESSLIST WHERE ID = @binlog_dump_tid;
STATE
Master has sent all binlog to slave; waiting for more updates
SHOW STATUS LIKE 'Rpl_semi_sync_master_clients';
Variable_name Value
Rpl_semi_sync_master_clients 1
# Disable Semi-Sync while the dump thread is still connected to its slave
SET @@GLOBAL.rpl_semi_sync_master_enabled = 0;
SELECT STATE FROM information_schema.PROCESSLIST WHERE ID = @binlog_dump_tid;
STATE
Master has sent all binlog to slave; waiting for more updates
SHOW STATUS LIKE 'Rpl_semi_sync_master_clients';
Variable_name Value
Rpl_semi_sync_master_clients 1
# Disconnect the slave and wait until the master's dump thread is gone
connection slave;
STOP SLAVE;
connection master;
SHOW STATUS LIKE 'Rpl_semi_sync_master_clients';
Variable_name Value
Rpl_semi_sync_master_clients 0
# Cleanup
SET @@GLOBAL.rpl_semi_sync_master_enabled= 0;
SET @@GLOBAL.rpl_semi_sync_master_wait_no_slave= 1;
connection slave;
SET @@GLOBAL.rpl_semi_sync_slave_enabled= 0;
include/rpl_end.inc
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