include/master-slave.inc
[connection master]
#
# MDEV-34504 PURGE BINARY LOGS not working anymore
#
select @@slave_connections_needed_for_purge;
@@slave_connections_needed_for_purge
0
set @old_dbug= @@global.debug_dbug;
create table t1 (a int, b varchar(32768) charset latin1);
insert into t1 values(1,repeat("a",32768));
connection slave;
select a from t1;
a
1
set @@global.debug_dbug= "+d,pause_before_io_read_event";
connection master;
insert into t1 values(2,repeat("b",32768));
insert into t1 values(3,repeat("c",32768));
connection slave;
set debug_sync='now wait_for io_thread_at_read_event';
select a from t1;
a
1
connection master;
FLUSH BINARY LOGS;
show binary logs;
Log_name	File_size
master-bin.000001	#
master-bin.000002	#
PURGE BINARY LOGS TO 'master-bin.000002';
Warnings:
Note	1375	Binary log XXX is not purged because it is in use by a slave thread
show binary logs;
Log_name	File_size
master-bin.000001	#
master-bin.000002	#
connection slave;
set @@global.debug_dbug= @old_dbug;
set debug_sync='now signal io_thread_continue_read_event';
connection master;
connection slave;
select count(*) from t1;
count(*)
153
connection master;
PURGE BINARY LOGS TO 'master-bin.000002';
show binary logs;
Log_name	File_size
master-bin.000002	#
drop table t1;
include/rpl_end.inc