# Test of options max_binlog_size and max_relay_log_size and
# how they act (if max_relay_log_size == 0, use max_binlog_size 
# for relay logs too).
# Test of manual relay log rotation with FLUSH LOGS.

# Requires statement logging
-- source include/master-slave.inc

# We have to sync with master, to ensure slave had time to start properly
# before we stop it. If not, we get errors about UNIX_TIMESTAMP() in the log.
sync_slave_with_master;
connection slave;
stop slave;
connection master;

--echo #
--echo # Generate a big enough master's binlog to cause relay log rotations
--echo #

create table t1 (a int);
let $1=800;
disable_query_log;
begin;
while ($1)
{
# eval means expand $ expressions
 eval insert into t1 values( $1 );
 dec $1;
}
enable_query_log;
drop table t1;
save_master_pos;
connection slave;
reset slave;

--echo #
--echo # Test 1
--echo #

set @my_max_binlog_size= @@global.max_binlog_size;
set global max_binlog_size=8192;
set global max_relay_log_size=8192-1; # mapped to 4096
select @@global.max_relay_log_size;
start slave;
sync_with_master;
--source include/check_slave_is_running.inc

--echo #
--echo # Test 2
--echo #

stop slave;
reset slave;
set global max_relay_log_size=(5*4096);
query_vertical select @@global.max_relay_log_size;
start slave;
sync_with_master;
--source include/check_slave_is_running.inc

--echo #
--echo # Test 3: max_relay_log_size = 0
--echo #

stop slave;
reset slave;
set global max_relay_log_size=0;
query_vertical select @@global.max_relay_log_size;
start slave;
sync_with_master;
--source include/check_slave_is_running.inc

--echo #
--echo # Test 4: Tests below are mainly to ensure that we have not coded with wrong assumptions
--echo #

stop slave;
reset slave;
# test of relay log rotation when the slave is stopped
# (to make sure it does not crash).
flush logs;

--echo #
--echo # Test 5
--echo #

reset slave;
start slave;
sync_with_master;
# test of relay log rotation when the slave is started
flush logs;
# We have now easy way to be sure that the SQL thread has now deleted the
# log we just closed. But a trick to achieve this is do an update on the master.
connection master;
create table t1 (a int);
sync_slave_with_master;
--source include/check_slave_is_running.inc

--echo #
--echo # Test 6: one more rotation, to be sure Relay_Log_Space is correctly updated
--echo #

flush logs;
connection master;
drop table t1;
sync_slave_with_master;
--source include/check_slave_is_running.inc

connection master;
# test that the absence of relay logs does not make a master crash
flush logs;
source include/show_master_status.inc;

# Restore max_binlog_size
connection slave;
set global max_binlog_size= @my_max_binlog_size;

--echo #
--echo # End of 4.1 tests
--echo # 
