include/master-slave.inc
[connection master]
connection slave;
include/stop_slave.inc
SET @save_dbug= @@GLOBAL.debug_dbug;
SET @@global.debug_dbug="+d,pause_sql_thread_on_fde";
include/start_slave.inc
# Future events must be logged at least 2 seconds after
# the slave starts
connection master;
# Write events to ensure slave will be consistent with master
create table t1 (a int);
insert into t1 values (1);
# Flush logs on master forces slave to generate a Format description
# event in its relay log
flush logs;
connection slave;
# Ignore FDEs that happen before the CREATE/INSERT commands
SET DEBUG_SYNC='now WAIT_FOR paused_on_fde';
SET DEBUG_SYNC='now SIGNAL sql_thread_continue';
SET DEBUG_SYNC='now WAIT_FOR paused_on_fde';
SET DEBUG_SYNC='now SIGNAL sql_thread_continue';
# On the next FDE, the slave should have the master CREATE/INSERT events
SET DEBUG_SYNC='now WAIT_FOR paused_on_fde';
select count(*)=1 from t1;
count(*)=1
1
# The relay log FDE has been processed - here we check to ensure it was
# not considered in Seconds_Behind_Master calculation
connection slave1;
# Safely resume slave SQL thread
# Prove SQL thread is in state "debug sync point: now"
SET @@global.debug_dbug="-d,pause_sql_thread_on_fde";
SET DEBUG_SYNC='now SIGNAL sql_thread_continue';
# Wait for SQL thread to continue into normal execution
SET DEBUG_SYNC='RESET';
connection master;
DROP TABLE t1;
connection slave;
SET @@global.debug_dbug=$save_dbug;
include/rpl_end.inc