mirror of
https://github.com/MariaDB/server.git
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612 lines
14 KiB
Plaintext
612 lines
14 KiB
Plaintext
drop table if exists t1,t2;
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drop DATABASE if exists mysqltest_1;
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connect locker,localhost,root,,;
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connect locker2,localhost,root,,;
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connect reader,localhost,root,,;
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connect writer,localhost,root,,;
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connection locker;
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create table t1(n int);
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insert into t1 values (1);
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connection locker2;
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select get_lock("mysqltest_lock", 100);
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get_lock("mysqltest_lock", 100)
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1
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connection locker;
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update t1 set n = 2 and get_lock('mysqltest_lock', 100);
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connection writer;
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update low_priority t1 set n = 4;
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connection reader;
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select n from t1;
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connection locker2;
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select release_lock("mysqltest_lock");
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release_lock("mysqltest_lock")
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1
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connection locker;
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select release_lock("mysqltest_lock");
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release_lock("mysqltest_lock")
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1
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connection writer;
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connection reader;
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n
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4
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drop table t1;
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connection locker;
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create table t1(n int);
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insert into t1 values (1),(2);
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connection locker2;
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select get_lock("mysqltest_lock", 100);
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get_lock("mysqltest_lock", 100)
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1
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connection locker;
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select n from t1 where get_lock('mysqltest_lock', 100);
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connection writer;
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update low_priority t1 set n = 4;
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connection reader;
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select n from t1;
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n
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1
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2
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connection locker2;
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select release_lock("mysqltest_lock");
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release_lock("mysqltest_lock")
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1
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connection locker;
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n
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1
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2
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select release_lock("mysqltest_lock");
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release_lock("mysqltest_lock")
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1
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connection writer;
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drop table t1;
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connection locker;
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create table t1 (a int, b int);
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create table t2 (c int, d int);
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insert into t1 values(1,1);
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insert into t1 values(2,2);
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insert into t2 values(1,2);
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lock table t1 read;
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connection writer;
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update t1,t2 set c=a where b=d;
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connection reader;
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select c from t2;
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c
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2
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connection locker;
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unlock tables;
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drop table t1;
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drop table t2;
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connection locker;
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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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connection reader;
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insert t1 select * from t2;
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connection locker;
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drop table t2;
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unlock tables;
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connection reader;
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ERROR 42S02: Table 'test.t2' doesn't exist
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connection locker;
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drop table t1;
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connection locker;
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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, t1 as t1_2 write, t2 as t2_2 write;
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connection reader;
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insert t1 select * from t2;
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connection locker;
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drop table t2;
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unlock tables;
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connection reader;
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ERROR 42S02: Table 'test.t2' doesn't exist
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connection locker;
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drop table t1;
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End of 4.1 tests
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create table t1(a int);
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lock tables t1 write;
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connection reader;
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show columns from t1;
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Field Type Null Key Default Extra
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a int(11) YES NULL
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connection locker;
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unlock tables;
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drop table t1;
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connection locker;
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USE mysql;
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LOCK TABLES columns_priv WRITE, db WRITE, host WRITE, user WRITE;
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FLUSH TABLES;
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connection reader;
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USE mysql;
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SELECT user.Select_priv FROM user, db WHERE user.user = db.user LIMIT 1;
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connection locker;
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OPTIMIZE TABLES columns_priv, db, host, user;
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Table Op Msg_type Msg_text
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mysql.columns_priv optimize status OK
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mysql.db optimize status OK
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mysql.host optimize status OK
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mysql.user optimize status OK
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UNLOCK TABLES;
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connection reader;
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Select_priv
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N
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USE test;
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connection locker;
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use test;
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connection default;
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connection writer;
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CREATE TABLE t1 (c1 int);
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LOCK TABLE t1 WRITE;
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connection locker;
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FLUSH TABLES WITH READ LOCK;
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connection writer;
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CREATE TABLE t2 (c1 int);
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ERROR HY000: Table 't2' was not locked with LOCK TABLES
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UNLOCK TABLES;
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connection locker;
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UNLOCK TABLES;
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connection default;
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DROP TABLE t1;
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connection writer;
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CREATE TABLE t1 (c1 int);
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LOCK TABLE t1 WRITE;
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connection locker;
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FLUSH TABLES WITH READ LOCK;
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connection writer;
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CREATE TABLE t2 AS SELECT * FROM t1;
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ERROR HY000: Table 't2' was not locked with LOCK TABLES
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UNLOCK TABLES;
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connection locker;
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UNLOCK TABLES;
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connection default;
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DROP TABLE t1;
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connect con1,localhost,root,,;
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connect con2,localhost,root,,;
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connection con1;
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CREATE DATABASE mysqltest_1;
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FLUSH TABLES WITH READ LOCK;
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connection con2;
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DROP DATABASE mysqltest_1;
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connection con1;
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DROP DATABASE mysqltest_1;
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ERROR HY000: Can't execute the query because you have a conflicting read lock
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UNLOCK TABLES;
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connection con2;
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connection default;
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disconnect con1;
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disconnect con2;
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DROP DATABASE mysqltest_1;
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ERROR HY000: Can't drop database 'mysqltest_1'; database doesn't exist
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connection locker;
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set sql_mode="";
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create table t1 (f1 int(12) unsigned not null auto_increment, primary key(f1)) engine=innodb;
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set sql_mode=default;
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lock tables t1 write;
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connection writer;
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alter table t1 auto_increment=0;
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connection reader;
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alter table t1 auto_increment=0;
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connection locker;
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unlock tables;
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connection writer;
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connection reader;
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connection locker;
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drop table t1;
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connect con1,localhost,root,,;
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connect con2,localhost,root,,;
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connect con3,localhost,root,,;
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connect con4,localhost,root,,;
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connect con5,localhost,root,,;
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create table t1 (a int);
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create table t2 like t1;
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connection con1;
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lock tables t1 write;
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connection con2;
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flush tables with read lock;
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connection con5;
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# global read lock is taken
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connection con3;
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select * from t2 for update;
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connection con5;
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# waiting for release of read lock
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connection con4;
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# would hang and later cause a deadlock
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flush tables t2;
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connection con1;
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# clean up
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unlock tables;
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connection con2;
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unlock tables;
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connection con3;
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a
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connection default;
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disconnect con5;
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disconnect con4;
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disconnect con3;
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disconnect con2;
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disconnect con1;
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drop table t1,t2;
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#
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# Lightweight version:
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# Ensure that the wait for a GRL is done before opening tables.
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#
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connect con1,localhost,root,,;
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connect con2,localhost,root,,;
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create table t1 (a int);
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create table t2 like t1;
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#
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# UPDATE
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#
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connection default;
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flush tables with read lock;
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connection con1;
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update t2 set a = 1;
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connection default;
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# statement is waiting for release of read lock
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connection con2;
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flush table t2;
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connection default;
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unlock tables;
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connection con1;
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#
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# LOCK TABLES .. WRITE
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#
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connection default;
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flush tables with read lock;
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connection con1;
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lock tables t2 write;
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connection default;
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# statement is waiting for release of read lock
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connection con2;
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flush table t2;
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connection default;
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unlock tables;
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connection con1;
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unlock tables;
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connection default;
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disconnect con2;
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disconnect con1;
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drop table t1,t2;
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End of 5.0 tests
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create table t1 (i int);
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connection locker;
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lock table t1 read;
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connection writer;
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update t1 set i= 10;
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connection reader;
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select * from t1;
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connection default;
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kill query ID;
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connection reader;
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i
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connection writer;
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ERROR 70100: Query execution was interrupted
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connection locker;
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unlock tables;
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connection default;
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drop table t1;
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disconnect locker;
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disconnect locker2;
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disconnect reader;
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disconnect writer;
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drop table if exists t1;
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create table t1 (i int);
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connect flush,localhost,root,,test,,;
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connection default;
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lock tables t1 write;
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connection flush;
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flush tables with read lock;;
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connection default;
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alter table t1 add column j int;
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connect insert,localhost,root,,test,,;
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connection insert;
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insert into t1 values (1,2);;
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connection default;
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unlock tables;
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connection flush;
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select * from t1;
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i j
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unlock tables;
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connection insert;
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connection default;
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select * from t1;
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i j
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1 2
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drop table t1;
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disconnect flush;
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disconnect insert;
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drop table if exists t1;
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create table t1 (i int);
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connect flush,localhost,root,,test,,;
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connection default;
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lock tables t1 write;
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connection flush;
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flush tables with read lock;;
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connection default;
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flush tables;
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unlock tables;
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connection flush;
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connection default;
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disconnect flush;
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drop table t1;
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drop table if exists t1,t2;
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create table t1 (a int);
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flush status;
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lock tables t1 read;
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connect waiter,localhost,root,,;
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connection waiter;
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insert into t1 values(1);
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connection default;
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unlock tables;
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connection waiter;
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connection default;
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drop table t1;
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disconnect waiter;
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select @tlwa < @tlwb;
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@tlwa < @tlwb
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1
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End of 5.1 tests
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drop table if exists t1;
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create table t1 (i int);
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connect flush,localhost,root,,test,,;
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connection default;
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lock tables t1 write;
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connection flush;
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flush tables with read lock;;
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connection default;
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flush tables;
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drop table t1;
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connection flush;
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connection default;
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disconnect flush;
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#
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# Test for bug #46272 "MySQL 5.4.4, new MDL: unnecessary deadlock".
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#
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drop table if exists t1;
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create table t1 (c1 int primary key, c2 int, c3 int);
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insert into t1 values (1,1,0),(2,2,0),(3,3,0),(4,4,0),(5,5,0);
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begin;
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update t1 set c3=c3+1 where c2=3;
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connect con46272,localhost,root,,test,,;
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connection con46272;
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# The below ALTER TABLE statement should wait till transaction
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# in connection 'default' is complete and then succeed.
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# It should not deadlock or fail with ER_LOCK_DEADLOCK error.
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# Sending:
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alter table t1 add column c4 int;;
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connection default;
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# Wait until the above ALTER TABLE gets blocked because this
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# connection holds SW metadata lock on table to be altered.
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# The below statement should succeed. It should not
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# deadlock or end with ER_LOCK_DEADLOCK error.
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update t1 set c3=c3+1 where c2=4;
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# Unblock ALTER TABLE by committing transaction.
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commit;
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connection con46272;
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# Reaping ALTER TABLE.
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connection default;
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disconnect con46272;
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drop table t1;
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#
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# Bug#47249 assert in MDL_global_lock::is_lock_type_compatible
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#
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DROP TABLE IF EXISTS t1;
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DROP VIEW IF EXISTS v1;
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#
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# Test 1: LOCK TABLES v1 WRITE, t1 READ;
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#
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# Thanks to the fact that we no longer allow DDL on tables
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# which are locked for write implicitly, the exact scenario
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# in which assert was failing is no longer repeatable.
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CREATE TABLE t1 ( f1 integer );
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CREATE VIEW v1 AS SELECT f1 FROM t1 ;
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LOCK TABLES v1 WRITE, t1 READ;
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FLUSH TABLE t1;
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ERROR HY000: Table 't1' was locked with a READ lock and can't be updated
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UNLOCK TABLES;
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DROP TABLE t1;
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DROP VIEW v1;
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#
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# Test 2: LOCK TABLES t1 WRITE, v1 READ;
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#
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CREATE TABLE t1 ( f1 integer );
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CREATE VIEW v1 AS SELECT f1 FROM t1 ;
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connect con2,localhost,root;
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LOCK TABLES t1 WRITE, v1 READ;
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FLUSH TABLE t1;
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disconnect con2;
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connection default;
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LOCK TABLES t1 WRITE;
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FLUSH TABLE t1;
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DROP TABLE t1;
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DROP VIEW v1;
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#
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# Test for bug #50913 "Deadlock between open_and_lock_tables_derived
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# and MDL". Also see additional coverage in mdl_sync.test.
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#
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drop table if exists t1;
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drop view if exists v1;
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connect con50913,localhost,root;
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connection default;
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create table t1 (i int);
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create view v1 as select i from t1;
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begin;
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select * from t1;
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i
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connection con50913;
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# Sending:
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alter table t1 add column j int;
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connection default;
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# Wait until ALTER TABLE gets blocked.
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# The below statement should try to acquire SW lock on 't1'
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# and therefore should get ER_LOCK_DEADLOCK error. Before
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# bug fix it acquired SR lock and hung on thr_lock.c lock.
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delete a from t1 as a where i = 1;
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ERROR 40001: Deadlock found when trying to get lock; try restarting transaction
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# Unblock ALTER TABLE.
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commit;
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connection con50913;
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# Reaping ALTER TABLE;
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connection default;
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begin;
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select * from v1;
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i
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connection con50913;
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# Sending:
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alter table t1 drop column j;
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connection default;
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# Wait until ALTER TABLE gets blocked.
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# The below statement should try to acquire SW lock on 't1'
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# and therefore should get ER_LOCK_DEADLOCK error. Before
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# bug fix it acquired SR lock and hung on thr_lock.c lock.
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insert into v1 values (1);
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ERROR 40001: Deadlock found when trying to get lock; try restarting transaction
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# Unblock ALTER TABLE.
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commit;
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connection con50913;
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# Reaping ALTER TABLE;
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connection default;
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disconnect con50913;
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drop view v1;
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drop table t1;
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#
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# Bug#45225 Locking: hang if drop table with no timeout
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#
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# These tests also provide function coverage for the
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# lock_wait_timeout server variable.
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#
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DROP TABLE IF EXISTS t1;
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CREATE TABLE t1 (id int);
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connect con2, localhost, root,,;
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SET SESSION lock_wait_timeout= 1;
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#
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# Test 1: acquire exclusive lock
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#
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connection default;
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START TRANSACTION;
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INSERT INTO t1 VALUES (1);
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connection con2;
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DROP TABLE t1;
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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connection default;
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COMMIT;
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#
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# Test 2: upgrade shared lock
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#
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connection default;
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START TRANSACTION;
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SELECT * FROM t1;
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id
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1
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connection con2;
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ALTER TABLE t1 RENAME TO t2;
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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connection default;
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COMMIT;
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#
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# Test 3: acquire shared lock
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#
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connection default;
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LOCK TABLE t1 WRITE;
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connection con2;
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INSERT INTO t1(id) VALUES (2);
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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connection default;
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UNLOCK TABLES;
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#
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# Test 4: table level locks
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#
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connection default;
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LOCK TABLE t1 READ;
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connection con2;
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INSERT INTO t1(id) VALUES(4);
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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connection default;
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UNLOCK TABLES;
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#
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# Test 5: Waiting on Table Definition Cache (TDC)
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#
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connect con3, localhost, root;
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connection default;
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LOCK TABLE t1 READ;
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connection con3;
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# Sending:
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FLUSH TABLES;
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connection con2;
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SELECT * FROM t1;
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ERROR HY000: Lock wait timeout exceeded; try restarting transaction
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connection default;
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UNLOCK TABLES;
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connection con3;
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# Reaping: FLUSH TABLES
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#
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# Test 6: Timeouts in I_S queries
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#
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connection default;
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CREATE TABLE t2 (id INT);
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LOCK TABLE t2 WRITE;
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connection con3;
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# Sending:
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DROP TABLE t1, t2;
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connection con2;
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SELECT table_name, table_comment FROM information_schema.tables
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WHERE table_schema= 'test' AND table_name= 't1';
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table_name table_comment
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t1 Lock wait timeout exceeded; try restarting transaction
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Warnings:
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Warning 1205 Lock wait timeout exceeded; try restarting transaction
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connection default;
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UNLOCK TABLES;
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connection con3;
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# Reaping: DROP TABLE t1, t2
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connection default;
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# Cleanup
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disconnect con2;
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disconnect con3;
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#
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# Test for bug #51134 "Crash in MDL_lock::destroy on a concurrent
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# DDL workload".
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#
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drop tables if exists t1, t2, t3;
|
|
connect con1, localhost, root, , ;
|
|
connect con2, localhost, root, , ;
|
|
connection default;
|
|
create table t3 (i int);
|
|
connection con1;
|
|
# Lock 't3' so upcoming RENAME is blocked.
|
|
lock table t3 read;
|
|
connection con2;
|
|
# Remember ID for this connection.
|
|
# Start statement which will try to acquire two instances
|
|
# of X metadata lock on the same object.
|
|
# Sending:
|
|
rename tables t1 to t2, t2 to t3;;
|
|
connection default;
|
|
# Wait until RENAME TABLE is blocked on table 't3'.
|
|
# Kill RENAME TABLE.
|
|
kill query ID;
|
|
connection con2;
|
|
# RENAME TABLE should be aborted but should not crash.
|
|
ERROR 70100: Query execution was interrupted
|
|
connection con1;
|
|
unlock tables;
|
|
connection default;
|
|
disconnect con1;
|
|
disconnect con2;
|
|
drop table t3;
|
|
#
|
|
# Test for the bug where upgradable metadata locks was acquired
|
|
# even if the table to altered was temporary.
|
|
# Bug found while working on the related bug #51240.
|
|
#
|
|
DROP TABLE IF EXISTS t1;
|
|
CREATE TABLE t1 (id INT);
|
|
LOCK TABLE t1 WRITE;
|
|
connect con1, localhost, root;
|
|
CREATE TEMPORARY TABLE t1 (id INT);
|
|
ALTER TABLE t1 ADD COLUMN j INT;
|
|
connection default;
|
|
disconnect con1;
|
|
UNLOCK TABLES;
|
|
DROP TABLE t1;
|