mariadb/mysql-test/suite/engines/funcs/t/rpl_000015.test
Kristian Nielsen 0a68328673 MDEV-34705: Binlog-in-engine: Protect against concurrent RESET MASTER and dump threads
This is actually an existing problem in the old binlog implementation, and
this patch is applicable to old binlog also. The problem is that RESET
MASTER can run concurrently with binlog dump threads / connected slaves.
This will remove the binlog from under the feet of the reader, which can
cause all sorts of strange behaviour.

This patch fixes the problem by disallowing to run RESET MASTER when dump
threads (or other RESET MASTER or SHOW BINARY LOGS) are running. An error is
thrown in this case, user must stop slaves and/or kill dump threads to make
the RESET MASTER go through. A slave that connects in the middle of RESET
MASTER will wait for it to complete.

Fix a lot of test cases to kill any lingering dump threads before doing
RESET MASTER, mostly just by sourcing include/kill_binlog_dump_threads.inc.

Signed-off-by: Kristian Nielsen <knielsen@knielsen-hq.org>
2025-06-11 11:32:10 +02:00

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#####################
# Change Author: JBM
# Change Date: 2006-01-17
# Change: added order by in select
#####################
--source include/master-slave.inc
connection slave;
--source include/stop_slave.inc
connection master;
--source include/kill_binlog_dump_threads.inc
reset master;
show master status;
save_master_pos;
connection slave;
reset slave;
--let $status_items= Slave_IO_Running, Slave_SQL_Running, Last_SQL_Errno, Last_SQL_Error, Exec_Master_Log_Pos
--source include/show_slave_status.inc
change master to master_host='127.0.0.1';
# The following needs to be cleaned up when change master is fixed
--source include/show_slave_status.inc
--replace_result $MASTER_MYPORT MASTER_PORT
eval change master to master_host='127.0.0.1',master_user='root',
master_password='',master_port=$MASTER_MYPORT;
--source include/start_slave.inc
sync_with_master;
--source include/show_slave_status.inc
connection master;
create table t1 (n int, PRIMARY KEY(n));
insert into t1 values (10),(45),(90);
--sync_slave_with_master
SELECT * FROM t1 ORDER BY n;
connection master;
SELECT * FROM t1 ORDER BY n;
drop table t1;
--sync_slave_with_master
--source include/rpl_end.inc