-- source include/have_innodb.inc

let $timeout=`select @@innodb_lock_wait_timeout`;
set global innodb_lock_wait_timeout=42;

connect (a,localhost,root,,);
connect (b,localhost,root,,);

connection a;
select @@innodb_lock_wait_timeout;
set innodb_lock_wait_timeout=1;
select @@innodb_lock_wait_timeout;

connection b;
select @@innodb_lock_wait_timeout;
set global innodb_lock_wait_timeout=347;
select @@innodb_lock_wait_timeout;
set innodb_lock_wait_timeout=1;
select @@innodb_lock_wait_timeout;

connect (c,localhost,root,,);
connection c;
select @@innodb_lock_wait_timeout;
connection default;
disconnect c;

connection a;
create table t1(a int primary key)engine=innodb;
begin;
insert into t1 values(1),(2),(3);

connection b;
set innodb_lock_wait_timeout=5;
--send
select * from t1 for update;

connection a;
commit;

connection b;
reap;

connection a;
begin;
insert into t1 values(4);

connection b;
# Test that we get a lock timeout.
# We cannot reliably test that the timeout is exactly 1 seconds due to
# process scheduling differences on the host running the test suite. But we
# can test that we are within reasonable range.
set innodb_lock_wait_timeout=2;
set @a= current_timestamp();
--error ER_LOCK_WAIT_TIMEOUT
select * from t1 for update;
set @b= current_timestamp();
set @c= timestampdiff(SECOND, @a, @b);
select if(@c >= 1 and @c <= 10, 'OK', concat("NOT OK, time passed=", @c));

connection a;
commit;
drop table t1;

connection default;

disconnect a;
disconnect b;

eval set global innodb_lock_wait_timeout=$timeout;