mariadb/mysql-test/t/flush.test

connect (con1,localhost,root,,);
connect (con2,localhost,root,,);
connection con1;
drop table if exists t1;
create temporary table t1(n int not null primary key);
drop table if exists t2;
create table t2(n int);
insert into t2 values(3);
let $1=100;
while ($1)
{
 connection con1;
 send replace into t1 select n from t2;
 connection con2;
 send flush tables;
 connection con1;
 reap;
 connection con2;
 reap;
 dec $1;
}

connection con1;
select * from t1;
connection con2;
flush tables with read lock;
--error 1099;
drop table t2;
connection con1;
send drop table t2;
connection con2;
unlock tables;
connection con1;
reap;

#test if drop database will wait until we release the global read lock
connection con1;
drop database if exists foo;
create database foo;
create table foo.t1(n int);
insert into foo.t1 values (23);
flush tables with read lock;
connection con2;
send drop database foo;
connection con1;
select * from foo.t1;
unlock tables;
connection con2;
reap;

# test if dirty close releases global read lock
connection con1;
create table t1 (n int);
flush tables with read lock;
dirty_close con1;
connection con2;
insert into t1 values (345);
select * from t1;
drop table t1;