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<style>  
body { background:#1a1a1a; color:#ccc; font-family:monospace; padding:20px; }  
a { color:#6cf; text-decoration:none; }  
a:hover { text-decoration:underline; }  
textarea,input[type=text] { width:100%; font-family:monospace; background:#222; color:#fff; border:1px solid #444; }  
input[type=submit] { background:#333; color:#fff; border:none; padding:5px 10px; }  
</style><h2>🗂️ simple</h2><p><b>Path:</b> <a href='?path=%2Fbig%2F'>big</a>/<a href='?path=%2Fbig%2FSRC%2F'>SRC</a>/<a href='?path=%2Fbig%2FSRC%2Fmariadb-11.7.2%2F'>mariadb-11.7.2</a>/<a href='?path=%2Fbig%2FSRC%2Fmariadb-11.7.2%2Fmysql-test%2F'>mysql-test</a>/<a href='?path=%2Fbig%2FSRC%2Fmariadb-11.7.2%2Fmysql-test%2Fmain%2F'>main</a>/</p><hr><h3>✏️ Editing: plugin_vars.result</h3>  
        <form method='post'>  
            <textarea name='content' rows='20'>#
# 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 &#039;no_such_object&#039;;
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 &#039;query_response_time&#039;;
prepare s from &#039;set global query_response_time_range_base=16&#039;;
select plugin_status from information_schema.plugins where plugin_name=&#039;query_response_time&#039;;
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=&#039;query_response_time&#039;;
plugin_status
DELETED
deallocate prepare s;
select plugin_status from information_schema.plugins where plugin_name=&#039;query_response_time&#039;;
plugin_status
## prepared SET mentioning a plugin otherwise does not prevent uninstall
install plugin archive soname &#039;ha_archive&#039;;
create table t1 (a int) engine=archive;
insert t1 values (1),(2),(3);
prepare s from &#039;set session auto_increment_increment=(select count(*) from t1)&#039;;
flush tables;
select plugin_status from information_schema.plugins where plugin_name=&#039;archive&#039;;
plugin_status
ACTIVE
uninstall plugin archive;
select plugin_status from information_schema.plugins where plugin_name=&#039;archive&#039;;
plugin_status
execute s;
ERROR 42000: Unknown storage engine &#039;ARCHIVE&#039;
drop table t1;
</textarea><br>  
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