1 # Let's see if FLUSH TABLES WITH READ LOCK blocks COMMIT of existing
3 # We verify that we did not introduce a deadlock.
4 # This is intended to mimick how mysqldump and innobackup work.
6 # And it requires InnoDB
7 --source include/have_innodb.inc
9 # Save the initial number of concurrent sessions
10 --source include/count_sessions.inc
12 --echo # Establish connection con1 (user=root)
13 connect (con1,localhost,root,,);
14 --echo # Establish connection con2 (user=root)
15 connect (con2,localhost,root,,);
16 --echo # Establish connection con3 (user=root)
17 connect (con3,localhost,root,,);
18 --echo # Switch to connection con1
22 DROP TABLE IF EXISTS t1;
24 CREATE TABLE t1 (a INT) ENGINE=innodb;
29 INSERT INTO t1 VALUES(1);
30 --echo # Switch to connection con2
32 FLUSH TABLES WITH READ LOCK;
34 --echo # Switch to connection con1
36 send COMMIT; # blocked by con2
38 --echo # Switch to connection con2
40 SELECT * FROM t1; # verify con1 was blocked and data did not move
42 --echo # Switch to connection con1
48 --echo # Switch to connection con1
51 SELECT * FROM t1 FOR UPDATE;
52 --echo # Switch to connection con2
55 send SELECT * FROM t1 FOR UPDATE; # blocked by con1
57 --echo # Switch to connection con3
59 send FLUSH TABLES WITH READ LOCK; # blocked by con2
60 --echo # Switch to connection con1
62 COMMIT; # should not be blocked by con3
63 --echo # Switch to connection con2
66 --echo # Switch to connection con3
71 # Bug#6732 FLUSH TABLES WITH READ LOCK + COMMIT hangs later FLUSH TABLES
74 --echo # Switch to connection con2
76 COMMIT; # unlock InnoDB row locks to allow insertions
77 --echo # Switch to connection con1
80 INSERT INTO t1 VALUES(10);
81 FLUSH TABLES WITH READ LOCK;
84 --echo # Switch to connection con2
86 FLUSH TABLES WITH READ LOCK; # bug caused hang here
89 # Bug#7358 SHOW CREATE DATABASE fails if open transaction
93 SHOW CREATE DATABASE test;
99 --echo # Switch to connection default and close connections con1, con2, con3
107 # Wait till all disconnects are completed
108 --source include/wait_until_count_sessions.inc