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# # Testing of table locking # # Save the initial number of concurrent sessions. --source include/count_sessions.inc --disable_warnings ONCE drop table if exists t1,t2,t3; CREATE TABLE t1 ( `id` int(11) NOT NULL default '0', `id2` int(11) NOT NULL default '0', `id3` int(11) NOT NULL default '0', `dummy1` char(30) default NULL, PRIMARY KEY (`id`,`id2`), KEY `index_id3` (`id3`)) ENGINE=MyISAM; insert into t1 (id,id2) values (1,1),(1,2),(1,3); LOCK TABLE t1 WRITE; select dummy1,count(distinct id) from t1 group by dummy1; update t1 set id=-1 where id=1; LOCK TABLE t1 READ; --error 1099 update t1 set id=1 where id=1; --error 1100 create table t2 SELECT * from t1; create temporary table t2 SELECT * from t1; drop table if exists t2; unlock tables; create table t2 SELECT * from t1; LOCK TABLE t1 WRITE,t2 write; insert into t2 SELECT * from t1; update t1 set id=1 where id=-1; drop table t1,t2; # # Check bug with INSERT ... SELECT with lock tables # CREATE TABLE t1 ( index1 smallint(6) default NULL, nr smallint(6) default NULL, KEY index1(index1) ) ENGINE=MyISAM; CREATE TABLE t2 ( nr smallint(6) default NULL, name varchar(20) default NULL ) ENGINE=MyISAM; INSERT INTO t2 VALUES (1,'item1'); INSERT INTO t2 VALUES (2,'item2'); # problem begins here! lock tables t1 write, t2 read; insert into t1 select 1,nr from t2 where name='item1'; insert into t1 select 2,nr from t2 where name='item2'; unlock tables; check table t1; # Check error message lock tables t1 write; check table t2; --error 1100 insert into t1 select index1,nr from t1; unlock tables; lock tables t1 write, t1 as t1_alias read; insert into t1 select index1,nr from t1 as t1_alias; --error ER_TABLE_NOT_LOCKED drop table t1,t2; unlock tables; drop table t1,t2; # # BUG#5390 - problems with merge tables # Supplement test for the after-fix optimization # Check that a dropped table is correctly removed from a lock. create table t1 (c1 int); create table t2 (c1 int); create table t3 (c1 int); lock tables t1 write, t2 write, t3 write; # This removes one table after the other from the lock. drop table t2, t3, t1; # # Check that a lock merge works. create table t1 (c1 int); create table t2 (c1 int); create table t3 (c1 int); lock tables t1 write, t2 write, t3 write, t1 as t4 read; alter table t2 add column c2 int; drop table t1, t2, t3; # Bug7241 - Invalid response when DELETE .. USING and LOCK TABLES used. # create table t1 ( a int(11) not null auto_increment, primary key(a)); create table t2 ( a int(11) not null auto_increment, primary key(a)); lock tables t1 write, t2 read; delete from t1 using t1,t2 where t1.a=t2.a; delete t1 from t1,t2 where t1.a=t2.a; --error 1099 delete from t2 using t1,t2 where t1.a=t2.a; --error 1099 delete t2 from t1,t2 where t1.a=t2.a; --error ER_TABLE_NOT_LOCKED_FOR_WRITE drop table t1,t2; unlock tables; drop table t2,t1; --echo End of 4.1 tests. # # Bug#18884 "lock table + global read lock = crash" # The bug is not repeatable, just add the test case. # --disable_warnings ONCE drop table if exists t1; create table t1 (a int); lock table t1 write; --error ER_LOCK_OR_ACTIVE_TRANSACTION flush tables with read lock; unlock tables; drop table t1; # # Test LOCK TABLE on system tables. See bug#9953: CONVERT_TZ requires # mysql.time_zone_name to be locked. # --disable_warnings ONCE DROP TABLE IF EXISTS t1; CREATE TABLE t1 (i INT); LOCK TABLES mysql.time_zone READ, mysql.proc READ, t1 READ; UNLOCK TABLES; LOCK TABLES mysql.time_zone READ, mysql.proc READ, t1 WRITE; UNLOCK TABLES; LOCK TABLES mysql.time_zone READ, mysql.proc READ; UNLOCK TABLES; LOCK TABLES mysql.time_zone WRITE, mysql.proc WRITE; UNLOCK TABLES; # If at least one system table is locked for WRITE, then all other # tables should be system tables locked also for WRITE. --error ER_WRONG_LOCK_OF_SYSTEM_TABLE LOCK TABLES mysql.time_zone READ, mysql.proc WRITE, t1 READ; --error ER_WRONG_LOCK_OF_SYSTEM_TABLE LOCK TABLES mysql.time_zone WRITE, mysql.proc WRITE, t1 READ; --error ER_WRONG_LOCK_OF_SYSTEM_TABLE LOCK TABLES mysql.time_zone WRITE, mysql.proc WRITE, t1 WRITE; --error ER_WRONG_LOCK_OF_SYSTEM_TABLE LOCK TABLES mysql.time_zone READ, mysql.proc WRITE; DROP TABLE t1; --echo --echo Bug#5719 impossible to lock VIEW --echo --echo Just covering existing behaviour with tests. --echo Consistency has not been found here. --echo --disable_warnings drop view if exists v_bug5719; drop table if exists t1, t2, t3; --enable_warnings create table t1 (a int); create temporary table t2 (a int); create table t3 (a int); create view v_bug5719 as select 1; lock table v_bug5719 write; --error ER_TABLE_NOT_LOCKED select * from t1; --echo --echo Allowed to select from a temporary talbe under LOCK TABLES --echo select * from t2; --error ER_TABLE_NOT_LOCKED select * from t3; select * from v_bug5719; --error ER_LOCK_OR_ACTIVE_TRANSACTION drop view v_bug5719; --echo --echo sic: did not left LOCK TABLES mode automatically --echo --error ER_TABLE_NOT_LOCKED select * from t1; unlock tables; create or replace view v_bug5719 as select * from t1; lock tables v_bug5719 write; select * from v_bug5719; --echo --echo Allowed to use an underlying table under LOCK TABLES <view> --echo select * from t1; --echo --echo Allowed to select from a temporary table under LOCK TABLES --echo select * from t2; --error ER_TABLE_NOT_LOCKED select * from t3; --echo Dropping of implicitly locked table is allowed. drop table t1; --echo View becomes invalid. --error ER_VIEW_INVALID select * from v_bug5719; unlock tables; create table t1 (a int); --echo Now let us also lock table explicitly and drop it. lock tables t1 write, v_bug5719 write; drop table t1; --echo --echo sic: left LOCK TABLES mode --echo select * from t3; --error ER_VIEW_INVALID select * from v_bug5719; unlock tables; drop view v_bug5719; --echo --echo When limitation to use temporary tables in views is removed, please --echo add a test that shows what happens under LOCK TABLES when a view --echo references a temporary table, is locked, and the underlying table --echo is dropped. --echo --error ER_VIEW_SELECT_TMPTABLE create view v_bug5719 as select * from t2; --echo --echo Cleanup. --echo drop table t2, t3; --echo # --echo # Bug#39843 DELETE requires write access to table in subquery in where clause --echo # --disable_warnings ONCE DROP TABLE IF EXISTS t1,t2; CREATE TABLE t1 ( table1_rowid SMALLINT NOT NULL ); CREATE TABLE t2 ( table2_rowid SMALLINT NOT NULL ); INSERT INTO t1 VALUES (1); INSERT INTO t2 VALUES (1); LOCK TABLES t1 WRITE, t2 READ; --echo # Sub-select should not try to aquire a write lock. DELETE FROM t1 WHERE EXISTS ( SELECT 'x' FROM t2 WHERE t1.table1_rowid = t2.table2_rowid ) ; --echo # While implementing the patch we didn't break old behavior; --echo # The following sub-select should still requires a write lock: --error ER_TABLE_NOT_LOCKED_FOR_WRITE SELECT * FROM t1 WHERE 1 IN (SELECT * FROM t2 FOR UPDATE); UNLOCK TABLES; DROP TABLE t1,t2; --echo End of 5.1 tests. --echo # --echo # Ensure that FLUSH TABLES doesn't substitute a base locked table --echo # with a temporary one. --echo # --disable_warnings ONCE drop table if exists t1, t2; create table t1 (a int); create table t2 (a int); lock table t1 write, t2 write; create temporary table t1 (a int); flush table t1; drop temporary table t1; select * from t1; unlock tables; drop table t1, t2; --echo # --echo # Ensure that REPAIR .. USE_FRM works under LOCK TABLES. --echo # --disable_warnings ONCE drop table if exists t1, t2; create table t1 (a int) engine=myisam; create table t2 (a int) engine=myisam; lock table t1 write, t2 write; repair table t1 use_frm; repair table t1 use_frm; select * from t1; select * from t2; repair table t2 use_frm; repair table t2 use_frm; select * from t1; unlock tables; drop table t1, t2; --echo # --echo # Ensure that mi_copy_status is called for two instances --echo # of the same table when it is reopened after a flush. --echo # --disable_warnings drop table if exists t1; drop view if exists v1; --enable_warnings create table t1 (c1 int); create view v1 as select * from t1; lock tables t1 write, v1 write; flush table t1; insert into t1 values (33); flush table t1; select * from t1; unlock tables; drop table t1; drop view v1; --echo # --echo # WL#4284: Transactional DDL locking --echo # --disable_warnings ONCE drop table if exists t1; create table t1 (a int); connect(con1,localhost,root,,); set autocommit= 0; insert into t1 values (1); lock table t1 write; --echo # Disconnect --echo # Ensure that metadata locks will be released if there is an open --echo # transaction (autocommit=off) in conjunction with lock tables. disconnect con1; connection default; drop table t1; --echo # Same problem but now for BEGIN --disable_warnings ONCE drop table if exists t1; create table t1 (a int); connect(con1,localhost,root,,); begin; insert into t1 values (1); --echo # Disconnect --echo # Ensure that metadata locks held by the transaction are released. disconnect con1; connection default; drop table t1; --echo # --echo # Coverage for situations when we try to execute DDL on tables --echo # which are locked by LOCK TABLES only implicitly. --echo # --disable_warnings drop tables if exists t1, t2; drop view if exists v1; drop function if exists f1; --enable_warnings create table t1 (i int); create table t2 (j int); --echo # --echo # Try to perform DDL on table which is locked through view. create view v1 as select * from t2; lock tables t1 write, v1 write; flush table t2; alter table t2 add column k int; create trigger t2_bi before insert on t2 for each row set @a:=1; repair table t2; drop table t2; unlock tables; drop view v1; --echo # --echo # Now, try DDL on table which is locked through routine. delimiter |; create function f1 () returns int begin insert into t2 values (1); return 0; end| delimiter ;| create table t2 (j int); create view v1 as select f1() from t1; lock tables v1 read; flush table t2; alter table t2 add column k int; create trigger t2_bi before insert on t2 for each row set @a:=1; repair table t2; drop table t2; unlock tables; drop view v1; drop function f1; --echo # --echo # Finally, try DDL on table which is locked thanks to trigger. create trigger t1_ai after insert on t1 for each row insert into t2 values (1); create table t2 (j int); lock tables t1 write; alter table t2 add column k int; create trigger t2_bi before insert on t2 for each row set @a:=1; repair table t2; flush table t2; drop table t2; unlock tables; drop trigger t1_ai; drop tables t1; --echo # --echo # Bug#45035 " Altering table under LOCK TABLES results in --echo # "Error 1213 Deadlock found..." --echo # --echo # When reopening tables under LOCK TABLES after ALTER TABLE, --echo # 6.0 used to be taking thr_lock locks one by one, and --echo # that would lead to a lock conflict. --echo # Check that taking all locks at once works. --echo # --disable_warnings ONCE drop table if exists t1; create table t1 (i int); lock tables t1 write, t1 as a read, t1 as b read; alter table t1 add column j int; unlock tables; drop table t1; create temporary table t1 (i int); --echo # --echo # This is just for test coverage purposes, --echo # when this is allowed, remove the --error. --echo # --error ER_CANT_REOPEN_TABLE lock tables t1 write, t1 as a read, t1 as b read; alter table t1 add column j int; unlock tables; drop table t1; --echo # Moved case for partitioned tables to partition.test --echo # --echo # Bug #43272 HANDLER SQL command does not work under LOCK TABLES --echo # --disable_warnings ONCE DROP TABLE IF EXISTS t1; CREATE TABLE t1 (a INT); LOCK TABLE t1 WRITE; --echo # HANDLER commands are not allowed in LOCK TABLES mode --error ER_LOCK_OR_ACTIVE_TRANSACTION HANDLER t1 OPEN; --error ER_LOCK_OR_ACTIVE_TRANSACTION HANDLER t1 READ FIRST; --error ER_LOCK_OR_ACTIVE_TRANSACTION HANDLER t1 CLOSE; UNLOCK TABLES; DROP TABLE t1; --echo # --echo # Bug#45066 FLUSH TABLES WITH READ LOCK deadlocks against --echo # LOCK TABLE --echo # --disable_warnings ONCE DROP TABLE IF EXISTS t1; CREATE TABLE t1(a INT); LOCK TABLE t1 READ; --error ER_TABLE_NOT_LOCKED_FOR_WRITE FLUSH TABLES; LOCK TABLE t1 WRITE; FLUSH TABLES; --echo # --echo # If you allow the next combination, you reintroduce bug Bug#45066 --echo # LOCK TABLE t1 READ; --error ER_LOCK_OR_ACTIVE_TRANSACTION FLUSH TABLES WITH READ LOCK; LOCK TABLE t1 WRITE; --error ER_LOCK_OR_ACTIVE_TRANSACTION FLUSH TABLES WITH READ LOCK; UNLOCK TABLES; DROP TABLE t1; --echo # --echo # Simplified test for bug #48538 "Assertion in thr_lock() on LOAD DATA --echo # CONCURRENT INFILE". --echo # --disable_warnings ONCE DROP TABLE IF EXISTS t1; CREATE TABLE t1 (f1 INT, f2 INT) ENGINE = MEMORY; CREATE TRIGGER t1_ai AFTER INSERT ON t1 FOR EACH ROW UPDATE LOW_PRIORITY t1 SET f2 = 7; --echo # Statement below should fail with ER_CANT_UPDATE_USED_TABLE_IN_SF_OR_TRG --echo # error instead of failing on assertion in table-level locking subsystem. --error ER_CANT_UPDATE_USED_TABLE_IN_SF_OR_TRG INSERT INTO t1(f1) VALUES(0); DROP TABLE t1; --echo # --echo # Bug#43685 Lock table affects other non-related tables --echo # --disable_warnings ONCE DROP TABLE IF EXISTS t1, t2; connect (con2, localhost, root); CREATE TABLE t1 (id INT); CREATE TABLE t2 (id INT); --echo # Connection default connection default; LOCK TABLE t1 WRITE; ANALYZE TABLE t1; --echo # Connection con2 connection con2; LOCK TABLE t2 WRITE; --echo # This used to hang until the first connection --echo # unlocked t1. FLUSH TABLE t2; UNLOCK TABLES; --echo # Connection default connection default; UNLOCK TABLES; DROP TABLE t1, t2; disconnect con2; --echo # --echo # Bug#13586314 - RUNTIME - HIBISCUS: ISSUE DEPRECATION --echo # WARNING FOR LOW_PRIORITY MODIFIER --echo # --disable_warnings DROP TABLE IF EXISTS t1; --enable_warnings CREATE TABLE t1 (a INT); --echo # Below statement should return a deprecation warning LOCK TABLES t1 LOW_PRIORITY WRITE; UNLOCK TABLES; DROP TABLE t1; --echo # End of Bug#13586314 --echo # --echo # Additional test coverage for WL#5534 - Online ALTER phase 1. --echo # --disable_warnings DROP TABLE IF EXISTS t1, m1; --enable_warnings CREATE TABLE t1(a INT) ENGINE = MYISAM; CREATE TABLE m1(a INT) engine=merge union(t1); LOCK TABLES m1 WRITE; ALTER TABLE m1 COMMENT 'test'; --echo # This triggered an assert in MDL_ticket::downgrade_lock FLUSH TABLE m1; UNLOCK TABLES; DROP TABLE m1, t1; --echo # --echo # End of 6.0 tests. --echo # # Check that all connections opened by test cases in this file are really # gone so execution of other tests won't be affected by their presence. --source include/wait_until_count_sessions.inc