# 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.

source include/master-slave.inc;
connection slave;
stop slave;
connection master;
# Generate a big enough master's binlog to cause relay log rotations
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;
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;
--replace_result $MASTER_MYPORT MASTER_PORT
--replace_column 1 # 33 #
show slave status;
stop slave;
reset slave;
set global max_relay_log_size=(5*4096);
select @@global.max_relay_log_size;
start slave;
sync_with_master;
--replace_result $MASTER_MYPORT MASTER_PORT
--replace_column 1 # 33 #
show slave status;
stop slave;
reset slave;
set global max_relay_log_size=0;
select @@global.max_relay_log_size;
start slave;
sync_with_master;
--replace_result $MASTER_MYPORT MASTER_PORT
--replace_column 1 # 33 #
show slave status;

# Tests below are mainly to ensure that we have not coded with wrong assumptions

stop slave;
reset slave;
# test of relay log rotation when the slave is stopped
# (to make sure it does not crash).
flush logs;
--replace_result $MASTER_MYPORT MASTER_PORT
--replace_column 1 # 33 #
show slave status;

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);
save_master_pos;
connection slave;
sync_with_master;
--replace_result $MASTER_MYPORT MASTER_PORT
--replace_column 1 # 33 #
show slave status;
# one more rotation, to be sure Relay_Log_Space is correctly updated
flush logs;
connection master;
drop table t1;
save_master_pos;
connection slave;
sync_with_master;
--replace_result $MASTER_MYPORT MASTER_PORT
--replace_column 1 # 33 #
show slave status;

connection master;
# test that the absence of relay logs does not make a master crash
flush logs;
show master status;