mariadb/mysql-test/suite/rpl/t/rpl_log_pos.test
Brandon Nesterenko 5ab5ff08b0 MDEV-19801: Change defaults for CHANGE MASTER TO so that GTID-based replication is used by default if master supports it
This commit makes replicas crash-safe by default by changing the
Using_Gtid value to be Slave_Pos on a fresh slave start and after
RESET SLAVE is issued. If the primary server does not support GTIDs
(i.e., version < 10), the replica will fall back to Using_Gtid=No on
slave start and after RESET SLAVE.

The following additional informational messages/warnings are added:

 1. When Using_Gtid is automatically changed. That is, if RESET
SLAVE reverts Using_Gtid back to Slave_Pos, or Using_Gtid is
inferred to No from a CHANGE MASTER TO given with log coordinates
without MASTER_USE_GTID.
 2. If options are ignored in CHANGE MASTER TO. If CHANGE MASTER TO
is given with log coordinates, yet also specifies
MASTER_USE_GTID=Slave_Pos, a warning message is given that the log
coordinate options are ignored.

Additionally, an MTR macro has been added for RESET SLAVE,
reset_slave.inc, which provides modes/options for resetting a slave
in log coordinate or gtid modes. When in log coordinates mode, the
macro will execute CHANGE MASTER TO MASTER_USE_GTID=No after the
RESET SLAVE command. When in GTID mode, an extra parameter,
reset_slave_keep_gtid_state, can be set to reset or preserve the
value of gtid_slave_pos.

Reviewed By:
===========
Andrei Elkin <andrei.elkin@mariadb.com>
2022-07-26 13:31:27 -06:00

57 lines
1.5 KiB
Text

##########
# Change Author: JBM
# Change Date: 2006-01-16
##########
#
# Testing of setting slave to wrong log position with master_log_pos
#
# Passes with rbr no problem, removed statement include [jbm]
source include/master-slave.inc;
#
# Add an event to get some information into the log we can try to parse
#
let $read_pos= query_get_value(SHOW MASTER STATUS, Position, 1);
create table if not exists t1 (n int);
drop table t1;
call mtr.add_suppression ("Slave I/O: Got fatal error 1236 from master when reading data from binary");
call mtr.add_suppression ("Error in Log_event::read_log_event");
source include/show_master_status.inc;
sync_slave_with_master;
source include/stop_slave.inc;
let $wrong_log_pos= `SELECT $read_pos+2`;
--replace_result $wrong_log_pos MASTER_LOG_POS
eval change master to master_log_pos=$wrong_log_pos, master_use_gtid=no;
start slave;
let $slave_io_errno= 1236;
--let $show_slave_io_error= 1
# Mask line numbers
--let $slave_io_error_replace= / at [0-9]*/ at XXX/
source include/wait_for_slave_io_error.inc;
source include/stop_slave_sql.inc;
--enable_warnings
connection master;
source include/show_master_status.inc;
create table if not exists t1 (n int);
drop table if exists t1;
create table t1 (n int);
insert into t1 values (1),(2),(3);
save_master_pos;
connection slave;
--replace_result 4 MASTER_LOG_POS
change master to master_log_pos=4, master_use_gtid=no;
start slave;
sync_with_master;
select * from t1 ORDER BY n;
connection master;
drop table t1;
sync_slave_with_master;
--echo End of 5.0 tests
--source include/rpl_end.inc