#
# exists as a global only
#
# 2010-01-21 OBN - Added 
#
source include/not_embedded.inc;
select @@global.rpl_semi_sync_slave_trace_level;
SET @start_global_value = @@global.rpl_semi_sync_slave_trace_level;

select @@global.rpl_semi_sync_slave_trace_level in (1,16,32,64); 
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
select @@session.rpl_semi_sync_slave_trace_level;
show global variables like 'rpl_semi_sync_slave_trace_level';
show session variables like 'rpl_semi_sync_slave_trace_level';
select * from information_schema.global_variables where variable_name='rpl_semi_sync_slave_trace_level';
select * from information_schema.session_variables where variable_name='rpl_semi_sync_slave_trace_level';

#
# show that it's writable
#
set global rpl_semi_sync_slave_trace_level=16;
--error ER_GLOBAL_VARIABLE
set session rpl_semi_sync_slave_trace_level=99;
select @@global.rpl_semi_sync_slave_trace_level;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
select @@session.rpl_semi_sync_slave_trace_level;
show global variables like 'rpl_semi_sync_slave_trace_level';
show session variables like 'rpl_semi_sync_slave_trace_level';
select * from information_schema.global_variables where variable_name='rpl_semi_sync_slave_trace_level';
select * from information_schema.session_variables where variable_name='rpl_semi_sync_slave_trace_level';

--echo NOTE: Value can also be set to values that are combinations of values
set global rpl_semi_sync_slave_trace_level=42;
select @@global.rpl_semi_sync_slave_trace_level;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
select @@session.rpl_semi_sync_slave_trace_level;
show global variables like 'rpl_semi_sync_slave_trace_level';
show session variables like 'rpl_semi_sync_slave_trace_level';
select * from information_schema.global_variables where variable_name='rpl_semi_sync_slave_trace_level';
select * from information_schema.session_variables where variable_name='rpl_semi_sync_slave_trace_level';

#
# incorrect types
#
--error ER_WRONG_TYPE_FOR_VAR
set global rpl_semi_sync_slave_trace_level=1.1;
--error ER_WRONG_TYPE_FOR_VAR
set global rpl_semi_sync_slave_trace_level=1e1;
--error ER_WRONG_TYPE_FOR_VAR
set global rpl_semi_sync_slave_trace_level="some text";

#
# Cleanup
#
SET @@global.rpl_semi_sync_slave_trace_level = @start_global_value;
select @@global.rpl_semi_sync_slave_trace_level;