reset master; set @@global.slave_net_timeout= 10; change master to master_host='127.0.0.1',master_port=MASTER_PORT, master_user='root'; show status like 'Slave_heartbeat_period';; Variable_name Slave_heartbeat_period Value 5.000 change master to master_host='127.0.0.1',master_port=MASTER_PORT, master_user='root', master_heartbeat_period= 4294968; ERROR HY000: The requested value for the heartbeat period is negative or exceeds the maximum 4294967 seconds show status like 'Slave_heartbeat_period';; Variable_name Slave_heartbeat_period Value 5.000 change master to master_host='127.0.0.1',master_port=MASTER_PORT, master_user='root', master_heartbeat_period= 0.0009999; Warnings: Warning 1624 The requested value for the heartbeat period is less than 1 msec. The period is reset to zero which means no heartbeats will be sending show status like 'Slave_heartbeat_period';; Variable_name Slave_heartbeat_period Value 0.000 change master to master_host='127.0.0.1',master_port=MASTER_PORT, master_user='root', master_heartbeat_period= 4294967; Warnings: Warning 1624 The requested value for the heartbeat period exceeds the value of `slave_net_timeout' sec. A sensible value for the period should be less than the timeout. show status like 'Slave_heartbeat_period';; Variable_name Slave_heartbeat_period Value 4294967.000 change master to master_host='127.0.0.1',master_port=MASTER_PORT, master_user='root', master_heartbeat_period= 0.001; show status like 'Slave_heartbeat_period';; Variable_name Slave_heartbeat_period Value 0.001 reset slave; set @@global.slave_net_timeout= 5; change master to master_host='127.0.0.1',master_port=MASTER_PORT, master_user='root', master_heartbeat_period= 5.001; Warnings: Warning 1624 The requested value for the heartbeat period exceeds the value of `slave_net_timeout' sec. A sensible value for the period should be less than the timeout. show status like 'Slave_heartbeat_period';; Variable_name Slave_heartbeat_period Value 5.001 reset slave; set @@global.slave_net_timeout= 5; change master to master_host='127.0.0.1',master_port=MASTER_PORT, master_user='root', master_heartbeat_period= 4; show status like 'Slave_heartbeat_period';; Variable_name Slave_heartbeat_period Value 4.000 set @@global.slave_net_timeout= 3 /* must be a warning */; Warnings: Warning 1624 The currect value for master_heartbeat_period exceeds the new value of `slave_net_timeout' sec. A sensible value for the period should be less than the timeout. reset slave; drop table if exists t1; set @@global.slave_net_timeout= 10; change master to master_host='127.0.0.1',master_port=MASTER_PORT, master_user='root', master_heartbeat_period= 0.5; show status like 'Slave_heartbeat_period';; Variable_name Slave_heartbeat_period Value 0.500 start slave; create table t1 (f1 int); Master_Log_File = 'master-bin.000001' Relay_Master_Log_File = 'master-bin.000001' Master_Log_File = 'master-bin.000001' Relay_Master_Log_File = 'master-bin.000001' show status like 'Slave_heartbeat_period';; Variable_name Slave_heartbeat_period Value 0.500 A heartbeat has been received by the slave drop table t1; include/stop_slave.inc End of tests