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Bug #45066 FLUSH TABLES WITH READ LOCK deadlocks against LOCK TABLE Test coverage for combinations of LOCK TABLE READ / WRITE and FLUSH TABLES / FLUSH TABLES WITH READ LOCK added to lock.test. LOCK and FLUSH are executed sequentially from one connection.
423 lines
10 KiB
Plaintext
423 lines
10 KiB
Plaintext
#
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# Testing of table locking
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#
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--disable_warnings
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drop table if exists t1,t2,t3;
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--enable_warnings
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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;
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insert into t1 (id,id2) values (1,1),(1,2),(1,3);
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LOCK TABLE t1 WRITE;
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select dummy1,count(distinct id) from t1 group by dummy1;
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update t1 set id=-1 where id=1;
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LOCK TABLE t1 READ;
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--error 1099
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update t1 set id=1 where id=1;
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--error 1100
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create table t2 SELECT * from t1;
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create temporary table t2 SELECT * from t1;
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drop table if exists t2;
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unlock tables;
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create table t2 SELECT * from t1;
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LOCK TABLE t1 WRITE,t2 write;
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insert into t2 SELECT * from t1;
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update t1 set id=1 where id=-1;
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drop table t1,t2;
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#
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# Check bug with INSERT ... SELECT with lock tables
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#
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CREATE TABLE t1 (
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index1 smallint(6) default NULL,
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nr smallint(6) default NULL,
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KEY index1(index1)
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) ENGINE=MyISAM;
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CREATE TABLE t2 (
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nr smallint(6) default NULL,
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name varchar(20) default NULL
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) ENGINE=MyISAM;
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INSERT INTO t2 VALUES (1,'item1');
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INSERT INTO t2 VALUES (2,'item2');
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# problem begins here!
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lock tables t1 write, t2 read;
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insert into t1 select 1,nr from t2 where name='item1';
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insert into t1 select 2,nr from t2 where name='item2';
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unlock tables;
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check table t1;
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# Check error message
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lock tables t1 write;
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check table t2;
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--error 1100
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insert into t1 select index1,nr from t1;
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unlock tables;
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lock tables t1 write, t1 as t1_alias read;
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insert into t1 select index1,nr from t1 as t1_alias;
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--error ER_TABLE_NOT_LOCKED
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drop table t1,t2;
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unlock tables;
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drop table t1,t2;
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#
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# BUG#5390 - problems with merge tables
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# Supplement test for the after-fix optimization
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# Check that a dropped table is correctly removed from a lock.
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create table t1 (c1 int);
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create table t2 (c1 int);
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create table t3 (c1 int);
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lock tables t1 write, t2 write, t3 write;
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# This removes one table after the other from the lock.
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drop table t2, t3, t1;
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#
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# Check that a lock merge works.
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create table t1 (c1 int);
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create table t2 (c1 int);
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create table t3 (c1 int);
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lock tables t1 write, t2 write, t3 write, t1 as t4 read;
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alter table t2 add column c2 int;
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drop table t1, t2, t3;
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# Bug7241 - Invalid response when DELETE .. USING and LOCK TABLES used.
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#
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create table t1 ( a int(11) not null auto_increment, primary key(a));
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create table t2 ( a int(11) not null auto_increment, primary key(a));
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lock tables t1 write, t2 read;
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delete from t1 using t1,t2 where t1.a=t2.a;
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delete t1 from t1,t2 where t1.a=t2.a;
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--error 1099
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delete from t2 using t1,t2 where t1.a=t2.a;
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--error 1099
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delete t2 from t1,t2 where t1.a=t2.a;
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--error ER_TABLE_NOT_LOCKED_FOR_WRITE
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drop table t1,t2;
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unlock tables;
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drop table t2,t1;
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--echo End of 4.1 tests.
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#
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# Bug#18884 "lock table + global read lock = crash"
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# The bug is not repeatable, just add the test case.
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#
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--disable_warnings
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drop table if exists t1;
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--enable_warnings
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create table t1 (a int);
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lock table t1 write;
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--error ER_LOCK_OR_ACTIVE_TRANSACTION
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flush tables with read lock;
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unlock tables;
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drop table t1;
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#
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# Test LOCK TABLE on system tables. See bug#9953: CONVERT_TZ requires
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# mysql.time_zone_name to be locked.
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#
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--disable_warnings
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DROP TABLE IF EXISTS t1;
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--enable_warnings
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CREATE TABLE t1 (i INT);
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LOCK TABLES mysql.time_zone READ, mysql.proc READ, t1 READ;
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UNLOCK TABLES;
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LOCK TABLES mysql.time_zone READ, mysql.proc READ, t1 WRITE;
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UNLOCK TABLES;
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LOCK TABLES mysql.time_zone READ, mysql.proc READ;
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UNLOCK TABLES;
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LOCK TABLES mysql.time_zone WRITE, mysql.proc WRITE;
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UNLOCK TABLES;
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# If at least one system table is locked for WRITE, then all other
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# tables should be system tables locked also for WRITE.
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--error ER_WRONG_LOCK_OF_SYSTEM_TABLE
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LOCK TABLES mysql.time_zone READ, mysql.proc WRITE, t1 READ;
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--error ER_WRONG_LOCK_OF_SYSTEM_TABLE
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LOCK TABLES mysql.time_zone WRITE, mysql.proc WRITE, t1 READ;
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--error ER_WRONG_LOCK_OF_SYSTEM_TABLE
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LOCK TABLES mysql.time_zone WRITE, mysql.proc WRITE, t1 WRITE;
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--error ER_WRONG_LOCK_OF_SYSTEM_TABLE
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LOCK TABLES mysql.time_zone READ, mysql.proc WRITE;
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DROP TABLE t1;
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--echo
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--echo Bug#5719 impossible to lock VIEW
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--echo
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--echo Just covering existing behaviour with tests.
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--echo Consistency has not been found here.
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--echo
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--disable_warnings
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drop view if exists v_bug5719;
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drop table if exists t1, t2, t3;
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--enable_warnings
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create table t1 (a int);
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create temporary table t2 (a int);
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create table t3 (a int);
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create view v_bug5719 as select 1;
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lock table v_bug5719 write;
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--error ER_TABLE_NOT_LOCKED
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select * from t1;
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--echo
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--echo Allowed to select from a temporary talbe under LOCK TABLES
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--echo
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select * from t2;
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--error ER_TABLE_NOT_LOCKED
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select * from t3;
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select * from v_bug5719;
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--error ER_LOCK_OR_ACTIVE_TRANSACTION
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drop view v_bug5719;
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--echo
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--echo sic: did not left LOCK TABLES mode automatically
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--echo
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--error ER_TABLE_NOT_LOCKED
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select * from t1;
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unlock tables;
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create or replace view v_bug5719 as select * from t1;
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lock tables v_bug5719 write;
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select * from v_bug5719;
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--echo
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--echo Allowed to use an underlying table under LOCK TABLES <view>
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--echo
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select * from t1;
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--echo
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--echo Allowed to select from a temporary table under LOCK TABLES
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--echo
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select * from t2;
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--error ER_TABLE_NOT_LOCKED
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select * from t3;
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drop table t1;
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--echo
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--echo sic: left LOCK TABLES mode
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--echo
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select * from t3;
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--error ER_VIEW_INVALID
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select * from v_bug5719;
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unlock tables;
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drop view v_bug5719;
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--echo
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--echo When limitation to use temporary tables in views is removed, please
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--echo add a test that shows what happens under LOCK TABLES when a view
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--echo references a temporary table, is locked, and the underlying table
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--echo is dropped.
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--echo
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--error ER_VIEW_SELECT_TMPTABLE
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create view v_bug5719 as select * from t2;
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--echo
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--echo Cleanup.
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--echo
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drop table t2, t3;
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--echo #
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--echo # Bug#39843 DELETE requires write access to table in subquery in where clause
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--echo #
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--disable_warnings
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DROP TABLE IF EXISTS t1,t2;
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--enable_warnings
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CREATE TABLE t1 (
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table1_rowid SMALLINT NOT NULL
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);
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CREATE TABLE t2 (
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table2_rowid SMALLINT NOT NULL
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);
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INSERT INTO t1 VALUES (1);
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INSERT INTO t2 VALUES (1);
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LOCK TABLES t1 WRITE, t2 READ;
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--echo # Sub-select should not try to aquire a write lock.
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DELETE FROM t1
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WHERE EXISTS
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(
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SELECT 'x'
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FROM t2
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WHERE t1.table1_rowid = t2.table2_rowid
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) ;
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--echo # While implementing the patch we didn't break old behavior;
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--echo # The following sub-select should still requires a write lock:
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--error ER_TABLE_NOT_LOCKED_FOR_WRITE
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SELECT * FROM t1 WHERE 1 IN (SELECT * FROM t2 FOR UPDATE);
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UNLOCK TABLES;
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DROP TABLE t1,t2;
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--echo End of 5.1 tests.
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--echo #
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--echo # Ensure that FLUSH TABLES doesn't substitute a base locked table
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--echo # with a temporary one.
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--echo #
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--disable_warnings
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drop table if exists t1, t2;
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--enable_warnings
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create table t1 (a int);
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create table t2 (a int);
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lock table t1 write, t2 write;
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create temporary table t1 (a int);
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flush table t1;
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drop temporary table t1;
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select * from t1;
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unlock tables;
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drop table t1, t2;
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--echo #
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--echo # Ensure that REPAIR .. USE_FRM works under LOCK TABLES.
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--echo #
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--disable_warnings
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drop table if exists t1, t2;
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--enable_warnings
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create table t1 (a int);
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create table t2 (a int);
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lock table t1 write, t2 write;
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repair table t1 use_frm;
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repair table t1 use_frm;
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select * from t1;
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select * from t2;
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repair table t2 use_frm;
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repair table t2 use_frm;
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select * from t1;
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unlock tables;
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drop table t1, t2;
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--echo #
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--echo # Ensure that mi_copy_status is called for two instances
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--echo # of the same table when it is reopened after a flush.
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--echo #
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--disable_warnings
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drop table if exists t1;
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drop view if exists v1;
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--enable_warnings
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create table t1 (c1 int);
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create view v1 as select * from t1;
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lock tables t1 write, v1 write;
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flush table t1;
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insert into t1 values (33);
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flush table t1;
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select * from t1;
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unlock tables;
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drop table t1;
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drop view v1;
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--echo #
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--echo # WL#4284: Transactional DDL locking
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--echo #
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--disable_warnings
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drop table if exists t1;
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--enable_warnings
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create table t1 (a int);
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connect(con1,localhost,root,,);
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set autocommit= 0;
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insert into t1 values (1);
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lock table t1 write;
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--echo # Disconnect
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--echo # Ensure that metadata locks will be released if there is an open
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--echo # transaction (autocommit=off) in conjunction with lock tables.
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disconnect con1;
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connection default;
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drop table t1;
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--echo # Same problem but now for BEGIN
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--disable_warnings
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drop table if exists t1;
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--enable_warnings
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create table t1 (a int);
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connect(con1,localhost,root,,);
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begin;
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insert into t1 values (1);
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--echo # Disconnect
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--echo # Ensure that metadata locks held by the transaction are released.
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disconnect con1;
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connection default;
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drop table t1;
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--echo #
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--echo # Bug#45035 " Altering table under LOCK TABLES results in
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--echo # "Error 1213 Deadlock found..."
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--echo #
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--echo # When reopening tables under LOCK TABLES after ALTER TABLE,
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--echo # 6.0 used to be taking thr_lock locks one by one, and
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--echo # that would lead to a lock conflict.
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--echo # Check that taking all locks at once works.
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--echo #
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--disable_warnings
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drop table if exists t1;
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--enable_warnings
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create table t1 (i int);
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lock tables t1 write, t1 as a read, t1 as b read;
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alter table t1 add column j int;
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unlock tables;
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drop table t1;
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create temporary table t1 (i int);
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--echo #
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--echo # This is just for test coverage purposes,
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--echo # when this is allowed, remove the --error.
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--echo #
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--error ER_CANT_REOPEN_TABLE
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lock tables t1 write, t1 as a read, t1 as b read;
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alter table t1 add column j int;
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unlock tables;
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drop table t1;
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--echo #
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--echo # Separate case for partitioned tables is important
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--echo # because each partition has an own thr_lock object.
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--echo #
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create table t1 (i int) partition by list (i)
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(partition p0 values in (1),
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partition p1 values in (2,3),
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partition p2 values in (4,5));
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lock tables t1 write, t1 as a read, t1 as b read;
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alter table t1 add column j int;
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unlock tables;
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drop table t1;
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--echo #
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--echo # Bug#45066 FLUSH TABLES WITH READ LOCK deadlocks against
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--echo # LOCK TABLE
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--echo #
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--disable_warnings
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DROP TABLE IF EXISTS t1;
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--enable_warnings
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CREATE TABLE t1(a INT);
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LOCK TABLE t1 READ;
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--error ER_TABLE_NOT_LOCKED_FOR_WRITE
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FLUSH TABLES;
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LOCK TABLE t1 WRITE;
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FLUSH TABLES;
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--echo #
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--echo # If you allow the next combination, you reintroduce bug Bug#45066
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--echo #
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LOCK TABLE t1 READ;
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--error ER_LOCK_OR_ACTIVE_TRANSACTION
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FLUSH TABLES WITH READ LOCK;
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LOCK TABLE t1 WRITE;
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--error ER_LOCK_OR_ACTIVE_TRANSACTION
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FLUSH TABLES WITH READ LOCK;
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UNLOCK TABLES;
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DROP TABLE t1;
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--echo #
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--echo # End of 6.0 tests.
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--echo #
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