include/master-slave.inc
[connection master]
connection slave;
include/stop_slave.inc
CHANGE MASTER TO MASTER_USE_GTID=NO;
include/start_slave.inc
connection master;
call mtr.add_suppression('Slave can not handle replication events with the checksum that master is configured to log');
call mtr.add_suppression('Replication event checksum verification failed');
call mtr.add_suppression('Relay log write failure: could not queue event from master');
call mtr.add_suppression('Master is configured to log replication events with checksum, but will not send such events to slaves that cannot process them');
connection master;
set @master_save_binlog_checksum= @@global.binlog_checksum;
set @save_master_verify_checksum =  @@global.master_verify_checksum;
select @@global.binlog_checksum as 'must be CRC32 because of the command line option';
must be CRC32 because of the command line option
CRC32
select @@session.binlog_checksum as 'no session var';
ERROR HY000: Variable 'binlog_checksum' is a GLOBAL variable
select @@global.master_verify_checksum  as 'must be zero because of default';
must be zero because of default
0
select @@session.master_verify_checksum  as 'no session var';
ERROR HY000: Variable 'master_verify_checksum' is a GLOBAL variable
connection slave;
set @slave_save_binlog_checksum= @@global.binlog_checksum;
set @save_slave_sql_verify_checksum = @@global.slave_sql_verify_checksum;
select @@global.slave_sql_verify_checksum  as 'must be one because of default';
must be one because of default
1
select @@session.slave_sql_verify_checksum  as 'no session var';
ERROR HY000: Variable 'slave_sql_verify_checksum' is a GLOBAL variable
connection master;
show binary logs;
Log_name	File_size
master-bin.000001	#
set @@global.binlog_checksum = NONE;
select @@global.binlog_checksum;
@@global.binlog_checksum
NONE
*** must be rotations seen ***
show binary logs;
Log_name	File_size
master-bin.000001	#
master-bin.000002	#
set @@global.binlog_checksum = default;
select @@global.binlog_checksum;
@@global.binlog_checksum
CRC32
set @@global.binlog_checksum = CRC32;
select @@global.binlog_checksum;
@@global.binlog_checksum
CRC32
set @@global.binlog_checksum = CRC32;
set @@global.master_verify_checksum = 0;
set @@global.master_verify_checksum = default;
set @@global.binlog_checksum = ADLER32;
ERROR 42000: Variable 'binlog_checksum' can't be set to the value of 'ADLER32'
set @@global.master_verify_checksum = 2;
ERROR 42000: Variable 'master_verify_checksum' can't be set to the value of '2'
connection slave;
set @@global.slave_sql_verify_checksum = 0;
set @@global.slave_sql_verify_checksum = default;
set @@global.slave_sql_verify_checksum = 2;
ERROR 42000: Variable 'slave_sql_verify_checksum' can't be set to the value of '2'
connection master;
set @@global.binlog_checksum = NONE;
create table t1 (a int);
flush logs;
flush logs;
flush logs;
connection slave;
flush logs;
flush logs;
flush logs;
select count(*) as zero from t1;
zero
0
include/stop_slave.inc
connection master;
set @@global.binlog_checksum = CRC32;
insert into t1 values (1) /* will not be applied on slave due to simulation */;
connection slave;
set @saved_dbug = @@global.debug_dbug;
set @@global.debug_dbug='d,simulate_slave_unaware_checksum';
start slave;
include/wait_for_slave_io_error.inc [errno=1236]
Last_IO_Error = 'Got fatal error 1236 from master when reading data from binary log: 'Slave can not handle replication events with the checksum that master is configured to log; the first event 'master-bin.000009' at 411, the last event read from 'master-bin.000010' at 4, the last byte read from 'master-bin.000010' at 256.''
select count(*) as zero from t1;
zero
0
set @@global.debug_dbug = @saved_dbug;
connection slave;
include/start_slave.inc
connection master;
set @@global.master_verify_checksum = 1;
set @save_dbug = @@session.debug_dbug;
set @@session.debug_dbug='d,simulate_checksum_test_failure';
show binlog events;
ERROR HY000: Error when executing command SHOW BINLOG EVENTS: Wrong offset or I/O error
SET debug_dbug= @save_dbug;
set @@global.master_verify_checksum = default;
connection slave;
connection slave;
include/stop_slave.inc
connection master;
create table t2 (a int);
connection slave;
set @saved_dbug = @@global.debug_dbug;
set @@global.debug_dbug='d,simulate_checksum_test_failure';
start slave io_thread;
include/wait_for_slave_io_error.inc [errno=1595,1913]
set @@global.debug_dbug = @saved_dbug;
start slave io_thread;
include/wait_for_slave_param.inc [Read_Master_Log_Pos]
set @@global.slave_sql_verify_checksum = 1;
set @@global.debug_dbug='d,simulate_checksum_test_failure';
start slave sql_thread;
include/wait_for_slave_sql_error.inc [errno=1593]
Last_SQL_Error = 'Error initializing relay log position: I/O error reading event at position 4'
set @@global.debug_dbug = @saved_dbug;
include/start_slave.inc
connection master;
connection slave;
select count(*) as 'must be zero' from t2;
must be zero
0
connection slave;
stop slave;
include/reset_slave.inc
Warnings:
Note	4190	RESET SLAVE is implicitly changing the value of 'Using_Gtid' from 'No' to 'Slave_Pos'
set @@global.binlog_checksum= IF(floor((rand()*1000)%2), "CRC32", "NONE");
flush logs;
connection master;
set @@global.binlog_checksum= CRC32;
reset master;
flush logs;
create table t3 (a int, b char(5));
connection slave;
include/start_slave.inc
connection master;
connection slave;
select count(*) as 'must be zero' from t3;
must be zero
0
include/stop_slave.inc
change master to master_host='127.0.0.1',master_port=MASTER_PORT, master_user='root';
connection master;
flush logs;
reset master;
insert into t3 value (1, @@global.binlog_checksum);
connection slave;
include/start_slave.inc
flush logs;
connection master;
connection slave;
select count(*) as 'must be one' from t3;
must be one
1
connection master;
set @@global.binlog_checksum= IF(floor((rand()*1000)%2), "CRC32", "NONE");
insert into t3 value (1, @@global.binlog_checksum);
connection slave;
connection master;
drop table t1, t2, t3;
set @@global.binlog_checksum = @master_save_binlog_checksum;
set @@global.master_verify_checksum = @save_master_verify_checksum;
connection slave;
*** Bug#59123 / MDEV-5799: INCIDENT_EVENT checksum written to error log as garbage characters ***
connection master;
CREATE TABLE t4 (a INT PRIMARY KEY);
INSERT INTO t4 VALUES (1);
SET sql_log_bin=0;
CALL mtr.add_suppression("\\[ERROR\\] Can't generate a unique log-filename");
SET sql_log_bin=1;
SET @old_dbug= @@GLOBAL.debug_dbug;
SET debug_dbug= '+d,binlog_inject_new_name_error';
FLUSH LOGS;
ERROR HY000: Can't generate a unique log-filename master-bin.(1-999)

SET debug_dbug= @old_dbug;
INSERT INTO t4 VALUES (2);
connection slave;
include/wait_for_slave_sql_error.inc [errno=1590]
Last_SQL_Error = 'The incident LOST_EVENTS occurred on the master. Message: error writing to the binary log'
FOUND 1 /Slave SQL: The incident LOST_EVENTS occurred on the master\. Message: error writing to the binary log, Internal MariaDB error code: 1590/ in mysqld.2.err
SELECT * FROM t4 ORDER BY a;
a
1
STOP SLAVE IO_THREAD;
SET sql_slave_skip_counter= 1;
include/start_slave.inc
connection master;
connection slave;
SELECT * FROM t4 ORDER BY a;
a
1
2
connection slave;
set @@global.binlog_checksum = @slave_save_binlog_checksum;
set @@global.slave_sql_verify_checksum = @save_slave_sql_verify_checksum;
End of tests
connection master;
DROP TABLE t4;
include/rpl_end.inc