mirror of
https://github.com/MariaDB/server.git
synced 2025-11-03 20:36:16 +01:00
67 lines
2 KiB
Text
67 lines
2 KiB
Text
#
|
|
# MDEV-5345 - Deadlock between mysql_change_user(), SHOW VARIABLES and
|
|
# INSTALL PLUGIN
|
|
#
|
|
CREATE PROCEDURE p_install(x INT)
|
|
BEGIN
|
|
DECLARE CONTINUE HANDLER FOR 1126 BEGIN END;
|
|
WHILE x DO
|
|
SET x= x - 1;
|
|
INSTALL PLUGIN no_such_plugin SONAME 'no_such_object';
|
|
END WHILE;
|
|
END|
|
|
CREATE PROCEDURE p_show_vars(x INT)
|
|
WHILE x DO
|
|
SET x= x - 1;
|
|
SHOW VARIABLES;
|
|
END WHILE|
|
|
connect con1, localhost, root,,;
|
|
connect con2, localhost, root,,;
|
|
connection con1;
|
|
CALL p_install(100);
|
|
connection con2;
|
|
CALL p_show_vars(100);
|
|
connection default;
|
|
connection con1;
|
|
connection con2;
|
|
connection default;
|
|
disconnect con1;
|
|
disconnect con2;
|
|
USE test;
|
|
DROP PROCEDURE p_install;
|
|
DROP PROCEDURE p_show_vars;
|
|
#
|
|
# Bug#29363867: LOST CONNECTION TO MYSQL SERVER DURING QUERY
|
|
#
|
|
## prepared SET with a plugin variable prevents uninstall
|
|
install plugin query_response_time soname 'query_response_time';
|
|
prepare s from 'set global query_response_time_range_base=16';
|
|
select plugin_status from information_schema.plugins where plugin_name='query_response_time';
|
|
plugin_status
|
|
ACTIVE
|
|
uninstall plugin query_response_time;
|
|
Warnings:
|
|
Warning 1620 Plugin is busy and will be uninstalled on shutdown
|
|
execute s;
|
|
execute s;
|
|
select plugin_status from information_schema.plugins where plugin_name='query_response_time';
|
|
plugin_status
|
|
DELETED
|
|
deallocate prepare s;
|
|
select plugin_status from information_schema.plugins where plugin_name='query_response_time';
|
|
plugin_status
|
|
## prepared SET mentioning a plugin otherwise does not prevent uninstall
|
|
install plugin archive soname 'ha_archive';
|
|
create table t1 (a int) engine=archive;
|
|
insert t1 values (1),(2),(3);
|
|
prepare s from 'set session auto_increment_increment=(select count(*) from t1)';
|
|
flush tables;
|
|
select plugin_status from information_schema.plugins where plugin_name='archive';
|
|
plugin_status
|
|
ACTIVE
|
|
uninstall plugin archive;
|
|
select plugin_status from information_schema.plugins where plugin_name='archive';
|
|
plugin_status
|
|
execute s;
|
|
ERROR 42000: Unknown storage engine 'ARCHIVE'
|
|
drop table t1;
|