#
# wsrep_dirty_reads
#
# save the initial value
SET @wsrep_dirty_reads_session_saved = @@session.wsrep_dirty_reads;
# default
SELECT @@global.wsrep_dirty_reads;
ERROR HY000: Variable 'wsrep_dirty_reads' is a SESSION variable
SELECT @@session.wsrep_dirty_reads;
@@session.wsrep_dirty_reads
0

# scope and valid values
SET @@session.wsrep_dirty_reads=OFF;
SELECT @@session.wsrep_dirty_reads;
@@session.wsrep_dirty_reads
0
SET @@session.wsrep_dirty_reads=ON;
SELECT @@session.wsrep_dirty_reads;
@@session.wsrep_dirty_reads
1
SET @@session.wsrep_dirty_reads=default;
SELECT @@session.wsrep_dirty_reads;
@@session.wsrep_dirty_reads
0

# invalid values
SET @@session.wsrep_dirty_reads=NULL;
ERROR 42000: Variable 'wsrep_dirty_reads' can't be set to the value of 'NULL'
SET @@session.wsrep_dirty_reads='junk';
ERROR 42000: Variable 'wsrep_dirty_reads' can't be set to the value of 'junk'

# restore the initial values
SET @@session.wsrep_dirty_reads = @wsrep_dirty_reads_session_saved;
# End of test