Edit File: flush.result
drop table if exists t1,t2; drop database if exists mysqltest; create temporary table t1(n int not null primary key); create table t2(n int); insert into t2 values(3); select * from t1; n 3 flush tables with read lock; drop table t2; ERROR HY000: Can't execute the query because you have a conflicting read lock drop table t2; unlock tables; create database mysqltest; create table mysqltest.t1(n int); insert into mysqltest.t1 values (23); flush tables with read lock; drop database mysqltest; select * from mysqltest.t1; n 23 unlock tables; create table t1 (n int); flush tables with read lock; insert into t1 values (345); select * from t1; n 345 drop table t1; create table t1 (c1 int); lock table t1 write; flush tables with read lock; ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction lock table t1 read; flush tables with read lock; ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction unlock tables; flush tables with read lock; lock table t1 write; ERROR HY000: Can't execute the query because you have a conflicting read lock lock table t1 read; lock table t1 write; ERROR HY000: Can't execute the query because you have a conflicting read lock unlock tables; create table t2 (c1 int); create table t3 (c1 int); lock table t1 read, t2 read, t3 write; flush tables with read lock; ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction lock table t1 read, t2 read, t3 read; flush tables with read lock; ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction unlock tables; drop table t1, t2, t3; create table t1 (c1 int); create table t2 (c1 int); lock table t1 write; flush tables with read lock; insert into t2 values(1); unlock tables; drop table t1, t2; drop table if exists t1, t2; set session low_priority_updates=1; create table t1 (a int); create table t2 (b int); lock tables t1 write; flush tables with read lock; ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction unlock tables; lock tables t1 read, t2 write; flush tables with read lock; ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction unlock tables; lock tables t1 read; flush tables with read lock; ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction unlock tables; drop table t1, t2; set session low_priority_updates=default; select benchmark(200, (select sin(1))) > 1000; End of 5.0 tests set @old_general_log= @@general_log; set @old_read_only= @@read_only; set global general_log= on; flush tables with read lock; flush logs; unlock tables; set global read_only=1; flush logs; unlock tables; flush tables with read lock; flush logs; unlock tables; set global general_log= @old_general_log; set global read_only= @old_read_only; End of 5.1 tests # # Additional test for bug #51136 "Crash in pthread_rwlock_rdlock # on TEMPORARY + HANDLER + LOCK + SP". # Also see the main test for this bug in include/handler.inc. # drop tables if exists t1, t2; create table t1 (i int); create temporary table t2 (j int); flush tables with read lock; lock table t2 read; # This commit should not release any MDL locks. commit; # The below statement crashed before the bug fix as it # has attempted to release global shared metadata lock # which was already released by commit. unlock tables; drop tables t1, t2; # # Tests for WL#5000 FLUSH TABLES|TABLE table_list WITH READ LOCK # # I. Check the incompatible changes in the grammar. # flush tables with read lock, hosts; ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ' hosts' at line 1 flush privileges, tables; ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'tables' at line 1 flush privileges, tables with read lock; ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'tables with read lock' at line 1 flush privileges, tables; ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'tables' at line 1 flush tables with read lock, tables; ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ' tables' at line 1 show tables; Tables_in_test # # II. Check the allowed syntax. # drop table if exists t1, t2, t3; create table t1 (a int); create table t2 (a int); create table t3 (a int); lock table t1 read, t2 read; flush tables with read lock; ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction unlock tables; flush tables with read lock; flush tables t1, t2 with read lock; flush tables t1, t2 with read lock; ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction flush tables with read lock; ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction select * from t1; a select * from t2; a select * from t3; ERROR HY000: Table 't3' was not locked with LOCK TABLES insert into t1 (a) values (1); ERROR HY000: Table 't1' was locked with a READ lock and can't be updated insert into t2 (a) values (1); ERROR HY000: Table 't2' was locked with a READ lock and can't be updated insert into t3 (a) values (1); ERROR HY000: Table 't3' was not locked with LOCK TABLES lock table no_such_table read; ERROR 42S02: Table 'test.no_such_table' doesn't exist # # We implicitly left the locked tables # mode but still have the read lock. # insert into t2 (a) values (1); ERROR HY000: Can't execute the query because you have a conflicting read lock unlock tables; insert into t1 (a) values (1); insert into t2 (a) values (1); flush table t1, t2 with read lock; select * from t1; a 1 select * from t2; a 1 select * from t3; ERROR HY000: Table 't3' was not locked with LOCK TABLES insert into t1 (a) values (2); ERROR HY000: Table 't1' was locked with a READ lock and can't be updated insert into t2 (a) values (2); ERROR HY000: Table 't2' was locked with a READ lock and can't be updated insert into t3 (a) values (2); ERROR HY000: Table 't3' was not locked with LOCK TABLES lock table no_such_table read; ERROR 42S02: Table 'test.no_such_table' doesn't exist insert into t3 (a) values (2); # # III. Concurrent tests. # # --> connection default # # Check that flush tables <list> with read lock # does not affect non-locked tables. # flush tables t1 with read lock; # --> connection con1; select * from t1; a 1 select * from t2; a 1 insert into t2 (a) values (3); # --> connection default; unlock tables; # # Check that "FLUSH TABLES <list> WITH READ LOCK" is # compatible with active "FLUSH TABLES WITH READ LOCK". # Vice versa it is not true, since tables read-locked by # "FLUSH TABLES <list> WITH READ LOCK" can't be flushed. flush tables with read lock; # --> connection con1; flush table t1 with read lock; select * from t1; a 1 unlock tables; # --> connection default; unlock tables; # # Check that FLUSH TABLES t1 WITH READ LOCK # does not conflict with an existing FLUSH TABLES t2 # WITH READ LOCK. # flush table t1 with read lock; # --> connection con1 flush table t2 with read lock; unlock tables; # --> connection default unlock tables; # # Check that FLUSH TABLES t1 WITH READ LOCK # does not conflict with SET GLOBAL read_only=1. # set global read_only=1; # connection con1 flush table t1 with read lock; unlock tables; # connection default set global read_only=0; # # Check that it's possible to read-lock # tables locked with FLUSH TABLE <list> WITH READ LOCK. # flush tables t1, t2 with read lock; # connection con1 lock table t1 read, t2 read; unlock tables; # connection default unlock tables; # --> connection con1 drop table t1, t2, t3; # # Bug#51710 FLUSH TABLES <view> WITH READ LOCK kills the server # drop view if exists v1, v2, v3; drop table if exists t1, v1; create table t1 (a int); create view v1 as select 1; create view v2 as select * from t1; create view v3 as select * from v2; flush table v1, v2, v3 with read lock; ERROR HY000: 'test.v1' is not BASE TABLE flush table v1 with read lock; ERROR HY000: 'test.v1' is not BASE TABLE flush table v2 with read lock; ERROR HY000: 'test.v2' is not BASE TABLE flush table v3 with read lock; ERROR HY000: 'test.v3' is not BASE TABLE create temporary table v1 (a int); flush table v1 with read lock; ERROR HY000: 'test.v1' is not BASE TABLE drop view v1; create table v1 (a int); flush table v1 with read lock; drop temporary table v1; unlock tables; drop view v2, v3; drop table t1, v1; # # FLUSH TABLES <list> WITH READ LOCK and HANDLER # drop table if exists t1; create table t1 (a int, key a (a)); insert into t1 (a) values (1), (2), (3); handler t1 open; handler t1 read a next; a 1 handler t1 read a next; a 2 flush tables t1 with read lock; handler t1 read a next; ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction unlock tables; # # Sic: lost handler position. # handler t1 read a next; a 1 handler t1 close; drop table t1; # # Bug#52117 Pending FLUSH TALBES <list> aborts # transactions unnecessarily. # drop table if exists t1; # --> conection default create table t1 (a int); begin; select * from t1; a # --> connection con1 # # Issue a LOCK TABLE t1 READ. We could use HANDLER t1 OPEN # or a long-running select -- anything that # prevents FLUSH TABLE t1 from immediate completion would do. # lock table t1 read; # --> connection con2 # # FLUSH TABLE expels the table definition from the cache. # Sending 'flush table t1'... flush table t1; # --> connection default # Let flush table sync in. select * from t1; # --> connection con1 select * from t1; a unlock tables; # --> connection con2 # Reaping 'flush table t1'... # --> connection default # Reaping 'select * from t1'... a commit; # # Repeat the same test but with FLUSH TABLES # begin; select * from t1; a # --> connection con1 # # Issue a LOCK TABLE t1 READ. # lock table t1 read; # --> connection con2 # # FLUSH TABLES expels the table definition from the cache. # Sending 'flush tables'... flush tables; # --> connection default # Let flush table sync in. select * from t1; # --> connection con1 select * from t1; a unlock tables; # --> connection con2 # Reaping 'flush tables'... # --> connection default # Reaping 'select * from t1'... a commit; # Cleanup # --> connection con1 # --> connection con2 # --> connection default drop table t1; # # Test for bug #55273 "FLUSH TABLE tm WITH READ LOCK for Merge table # causes assert failure". # drop table if exists t1, t2, tm; create table t1 (i int); create table t2 (i int); create table tm (i int) engine=merge union=(t1, t2); insert into t1 values (1), (2); insert into t2 values (3), (4); # The below statement should succeed and lock merge # table for read. Only merge table gets flushed and # not underlying tables. flush tables tm with read lock; select * from tm; i 1 2 3 4 # Check that underlying tables are locked. select * from t1; i 1 2 select * from t2; i 3 4 unlock tables; # This statement should succeed as well and flush # all tables in the list. flush tables tm, t1, t2 with read lock; select * from tm; i 1 2 3 4 # Naturally, underlying tables should be locked in this case too. select * from t1; i 1 2 select * from t2; i 3 4 unlock tables; drop tables tm, t1, t2; # # Test for bug #57006 "Deadlock between HANDLER and # FLUSH TABLES WITH READ LOCK". # drop table if exists t1, t2; create table t1 (i int); create table t2 (i int); handler t1 open; # Switching to connection 'con1'. # Sending: flush tables with read lock; # Switching to connection 'con2'. # Wait until FTWRL starts waiting for 't1' to be closed. # Switching to connection 'default'. # The below statement should not cause deadlock. # Sending: insert into t2 values (1); # Switching to connection 'con2'. # Wait until INSERT starts to wait for FTWRL to go away. # Switching to connection 'con1'. # FTWRL should be able to continue now. # Reap FTWRL. unlock tables; # Switching to connection 'default'. # Reap INSERT. handler t1 close; # Cleanup. drop tables t1, t2; # # Bug#57649 FLUSH TABLES under FLUSH TABLES <list> WITH READ LOCK leads # to assert failure. # DROP TABLE IF EXISTS t1; CREATE TABLE t1 (a INT); FLUSH TABLES t1 WITH READ LOCK; FLUSH TABLES; ERROR HY000: Table 't1' was locked with a READ lock and can't be updated CREATE TRIGGER t1_bi BEFORE INSERT ON t1 FOR EACH ROW SET @a= 1; ERROR HY000: Table 't1' was locked with a READ lock and can't be updated ALTER TABLE t1 COMMENT 'test'; ERROR HY000: Table 't1' was locked with a READ lock and can't be updated UNLOCK TABLES; DROP TABLE t1; # # Test for bug #12641342 - "61401: UPDATE PERFORMANCE DEGRADES # GRADUALLY IF A TRIGGER EXISTS". # # One of side-effects of this bug was that a transaction which # involved DML statements requiring prelocking blocked concurrent # FLUSH TABLES WITH READ LOCK for the whole its duration, while # correct behavior in this case is to block FTWRL only for duration # of individual DML statements. DROP TABLE IF EXISTS t1; CREATE TABLE t1 (id INT PRIMARY KEY, value INT); INSERT INTO t1 VALUES (1, 1); CREATE TRIGGER t1_au AFTER UPDATE ON t1 FOR EACH ROW SET @var = "a"; BEGIN; UPDATE t1 SET value= value + 1 WHERE id = 1; # Switching to connection 'con1'. # The below FLUSH TABLES WITH READ LOCK should succeed and # should not be blocked by the transaction in default connection. FLUSH TABLES WITH READ LOCK; UNLOCK TABLES; # Switching to connection 'default'. COMMIT; DROP TABLE t1;