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build/lib/mysql/mysql-test/t/lock_multi.test
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644
build/lib/mysql/mysql-test/t/lock_multi.test
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-- source include/not_embedded.inc
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# Save the initial number of concurrent sessions
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--source include/count_sessions.inc
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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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# Test to see if select will get the lock ahead of low priority update
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connect (locker,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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lock tables t1 write;
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connection writer;
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send
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update low_priority t1 set n = 4;
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connection reader;
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# Sleep a bit till the update of connection writer is in work and hangs
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let $wait_condition=
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select count(*) = 1 from information_schema.processlist
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where state = "Locked" and info = "update low_priority t1 set n = 4";
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--source include/wait_condition.inc
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send
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select n from t1;
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connection locker;
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# Sleep a bit till the select of connection reader is in work and hangs
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let $wait_condition=
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select count(*) = 1 from information_schema.processlist
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where state = "Locked" and info = "select n from t1";
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--source include/wait_condition.inc
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unlock tables;
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connection writer;
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reap;
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connection reader;
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reap;
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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);
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lock tables t1 read;
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connection writer;
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send
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update low_priority t1 set n = 4;
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connection reader;
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# Sleep a bit till the update of connection writer is in work and hangs
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let $wait_condition=
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select count(*) = 1 from information_schema.processlist
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where state = "Locked" and info = "update low_priority t1 set n = 4";
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--source include/wait_condition.inc
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select n from t1;
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connection locker;
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unlock tables;
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connection writer;
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reap;
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drop table t1;
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#
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# Test problem when using locks with multi-updates
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# It should not block when multi-update is reading on a read-locked table
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#
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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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connection locker;
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drop table t1;
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drop table t2;
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#
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# Test problem when using locks on many tables and dropping a table that
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# is to-be-locked by another thread
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#
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#
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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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send
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insert t1 select * from t2;
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connection locker;
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let $wait_condition=
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select count(*) = 1 from information_schema.processlist
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where state = "Locked" and info = "insert t1 select * from t2";
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--source include/wait_condition.inc
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drop table t2;
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connection reader;
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--error ER_NO_SUCH_TABLE
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reap;
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connection locker;
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drop table t1;
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#
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# Same test as above, but with the dropped table locked twice
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#
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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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send
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insert t1 select * from t2;
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connection locker;
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# Sleep a bit till the insert of connection reader is in work and hangs
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let $wait_condition=
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select count(*) = 1 from information_schema.processlist
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where state = "Locked" and info = "insert t1 select * from t2";
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--source include/wait_condition.inc
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drop table t2;
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connection reader;
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--error ER_NO_SUCH_TABLE
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reap;
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connection locker;
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drop table t1;
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--echo End of 4.1 tests
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#
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# Bug#9998 MySQL client hangs on USE "database"
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#
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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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connection locker;
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unlock tables;
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drop table t1;
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#
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# Bug#16986 Deadlock condition with MyISAM tables
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#
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# Need a matching user in mysql.user for multi-table select
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--source include/add_anonymous_users.inc
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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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#
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connection reader;
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USE mysql;
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# Note: This must be a multi-table select, otherwise the deadlock will not occur
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send
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SELECT user.Select_priv FROM user, db WHERE user.user = db.user LIMIT 1;
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#
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connection locker;
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# Sleep a bit till the select of connection reader is in work and hangs
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let $wait_condition=
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select count(*) = 1 from information_schema.processlist
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where state = "Waiting for table" and info =
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"SELECT user.Select_priv FROM user, db WHERE user.user = db.user LIMIT 1";
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--source include/wait_condition.inc
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# Make test case independent from earlier grants.
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--replace_result "Table is already up to date" "OK"
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OPTIMIZE TABLES columns_priv, db, host, user;
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UNLOCK TABLES;
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#
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connection reader;
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reap;
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USE test;
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#
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connection locker;
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use test;
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#
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connection default;
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#
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# Test if CREATE TABLE with LOCK TABLE deadlocks.
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#
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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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#
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# This waits until t1 is unlocked.
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connection locker;
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send
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FLUSH TABLES WITH READ LOCK;
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#
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connection writer;
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# Sleep a bit till the flush of connection locker is in work and hangs
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let $wait_condition=
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select count(*) = 1 from information_schema.processlist
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where state = "Flushing tables" and info = "FLUSH TABLES WITH READ LOCK";
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--source include/wait_condition.inc
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# This must not block.
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CREATE TABLE t2 (c1 int);
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UNLOCK TABLES;
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#
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# This awakes now.
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connection locker;
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reap;
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UNLOCK TABLES;
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#
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connection default;
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DROP TABLE t1, t2;
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#
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# Test if CREATE TABLE SELECT with LOCK TABLE deadlocks.
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#
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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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#
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# This waits until t1 is unlocked.
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connection locker;
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send
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FLUSH TABLES WITH READ LOCK;
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#
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# This must not block.
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connection writer;
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# Sleep a bit till the flush of connection locker is in work and hangs
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let $wait_condition=
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select count(*) = 1 from information_schema.processlist
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where state = "Flushing tables" and info = "FLUSH TABLES WITH READ LOCK";
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--source include/wait_condition.inc
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--error ER_TABLE_NOT_LOCKED
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CREATE TABLE t2 AS SELECT * FROM t1;
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UNLOCK TABLES;
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#
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# This awakes now.
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connection locker;
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reap;
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UNLOCK TABLES;
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#
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connection default;
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DROP TABLE t1;
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--source include/delete_anonymous_users.inc
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#
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# Bug#19815 CREATE/RENAME/DROP DATABASE can deadlock on a global read lock
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#
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connect (con1,localhost,root,,);
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connect (con2,localhost,root,,);
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#
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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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#
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# With bug in place: acquire LOCK_mysql_create_table and
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# wait in wait_if_global_read_lock().
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connection con2;
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send
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DROP DATABASE mysqltest_1;
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#
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# With bug in place: try to acquire LOCK_mysql_create_table...
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# When fixed: Reject dropping db because of the read lock.
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connection con1;
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# Wait a bit so that the session con2 is in state "Waiting for release of readlock"
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let $wait_condition=
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select count(*) = 1 from information_schema.processlist
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where state = "Waiting for release of readlock"
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and info = "DROP DATABASE mysqltest_1";
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--source include/wait_condition.inc
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--error ER_CANT_UPDATE_WITH_READLOCK
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DROP DATABASE mysqltest_1;
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UNLOCK TABLES;
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#
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connection con2;
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reap;
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#
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connection default;
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disconnect con1;
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disconnect con2;
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# This must have been dropped by connection 2 already,
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# which waited until the global read lock was released.
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--error ER_DB_DROP_EXISTS
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DROP DATABASE mysqltest_1;
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#
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# Bug#17264 MySQL Server freeze
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#
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connection locker;
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# Disable warnings to allow test to run also without InnoDB
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--disable_warnings
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create table t1 (f1 int(12) unsigned not null auto_increment, primary key(f1)) engine=innodb;
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--enable_warnings
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lock tables t1 write;
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connection writer;
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send
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alter table t1 auto_increment=0;
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connection reader;
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# Wait till connection writer is blocked
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let $wait_condition=
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select count(*) = 1 from information_schema.processlist
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where state = "Locked" and info = "alter table t1 auto_increment=0";
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--source include/wait_condition.inc
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send
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alter table t1 auto_increment=0;
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connection locker;
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# Wait till connection reader is blocked
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let $wait_condition=
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select count(*) = 2 from information_schema.processlist
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where state = "Locked" and info = "alter table t1 auto_increment=0";
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--source include/wait_condition.inc
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unlock tables;
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connection writer;
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reap;
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connection reader;
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reap;
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connection locker;
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drop table t1;
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#
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# Bug#43230: SELECT ... FOR UPDATE can hang with FLUSH TABLES WITH READ LOCK indefinitely
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#
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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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--echo # con1
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lock tables t1 write;
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connection con2;
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--echo # con2
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send flush tables with read lock;
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connection con5;
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--echo # con5
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let $show_statement= SHOW PROCESSLIST;
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let $field= State;
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let $condition= = 'Flushing tables';
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--source include/wait_show_condition.inc
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--echo # global read lock is taken
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connection con3;
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--echo # con3
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send select * from t2 for update;
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connection con5;
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let $show_statement= SHOW PROCESSLIST;
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let $field= State;
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let $condition= = 'Waiting for release of readlock';
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--source include/wait_show_condition.inc
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--echo # waiting for release of read lock
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connection con4;
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--echo # con4
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--echo # would hang and later cause a deadlock
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flush tables t2;
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connection con1;
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--echo # clean up
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unlock tables;
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connection con2;
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--reap
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unlock tables;
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connection con3;
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--reap
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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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--echo #
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--echo # Lightweight version:
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--echo # Ensure that the wait for a GRL is done before opening tables.
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--echo #
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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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--echo #
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--echo # UPDATE
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--echo #
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connection default;
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--echo # default
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flush tables with read lock;
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connection con1;
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--echo # con1
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send update t2 set a = 1;
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connection default;
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--echo # default
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let $show_statement= SHOW PROCESSLIST;
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let $field= State;
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let $condition= = 'Waiting for release of readlock';
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--source include/wait_show_condition.inc
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--echo # statement is waiting for release of read lock
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connection con2;
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--echo # con2
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flush table t2;
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connection default;
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--echo # default
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unlock tables;
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connection con1;
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--echo # con1
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--reap
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--echo #
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--echo # LOCK TABLES .. WRITE
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--echo #
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connection default;
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--echo # default
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flush tables with read lock;
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connection con1;
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--echo # con1
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send lock tables t2 write;
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connection default;
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--echo # default
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let $show_statement= SHOW PROCESSLIST;
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let $field= State;
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let $condition= = 'Waiting for release of readlock';
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--source include/wait_show_condition.inc
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--echo # statement is waiting for release of read lock
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connection con2;
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--echo # con2
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flush table t2;
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connection default;
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--echo # default
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unlock tables;
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connection con1;
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--echo # con1
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--reap
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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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--echo End of 5.0 tests
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#
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# Bug#21281 Pending write lock is incorrectly removed when its
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# statement being KILLed
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#
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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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send
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update t1 set i= 10;
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connection reader;
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let $wait_condition=
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select count(*) = 1 from information_schema.processlist
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where state = "Locked" and info = "update t1 set i= 10";
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--source include/wait_condition.inc
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send
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select * from t1;
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connection default;
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let $wait_condition=
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select count(*) = 1 from information_schema.processlist
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where state = "Locked" and info = "select * from t1";
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--source include/wait_condition.inc
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let $ID= `select id from information_schema.processlist where state = "Locked" and info = "update t1 set i= 10"`;
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--replace_result $ID ID
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eval kill query $ID;
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connection reader;
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--reap
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connection writer;
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--error ER_QUERY_INTERRUPTED
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--reap
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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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#
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# Bug#25856 HANDLER table OPEN in one connection lock DROP TABLE in another one
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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) ENGINE=MEMORY;
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--echo --> client 2
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connection locker;
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--error ER_ILLEGAL_HA
|
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handler t1 open;
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--echo --> client 1
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connection default;
|
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drop table t1;
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||||
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# Disconnect sessions used in many subtests above
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||||
disconnect locker;
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disconnect reader;
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disconnect writer;
|
||||
|
||||
|
||||
#
|
||||
# Bug#32395 Alter table under a impending global read lock causes a server crash
|
||||
#
|
||||
|
||||
#
|
||||
# Test ALTER TABLE under LOCK TABLES and FLUSH TABLES WITH READ LOCK
|
||||
#
|
||||
|
||||
--disable_warnings
|
||||
drop table if exists t1;
|
||||
--enable_warnings
|
||||
create table t1 (i int);
|
||||
connect (flush,localhost,root,,test,,);
|
||||
connection default;
|
||||
--echo connection: default
|
||||
lock tables t1 write;
|
||||
connection flush;
|
||||
--echo connection: flush
|
||||
--send flush tables with read lock;
|
||||
connection default;
|
||||
--echo connection: default
|
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let $wait_condition=
|
||||
select count(*) = 1 from information_schema.processlist
|
||||
where state = "Flushing tables";
|
||||
--source include/wait_condition.inc
|
||||
alter table t1 add column j int;
|
||||
connect (insert,localhost,root,,test,,);
|
||||
connection insert;
|
||||
--echo connection: insert
|
||||
let $wait_condition=
|
||||
select count(*) = 1 from information_schema.processlist
|
||||
where state = "Flushing tables";
|
||||
--source include/wait_condition.inc
|
||||
--send insert into t1 values (1,2);
|
||||
--echo connection: default
|
||||
connection default;
|
||||
let $wait_condition=
|
||||
select count(*) = 1 from information_schema.processlist
|
||||
where state = "Waiting for release of readlock";
|
||||
--source include/wait_condition.inc
|
||||
unlock tables;
|
||||
connection flush;
|
||||
--echo connection: flush
|
||||
--reap
|
||||
let $wait_condition=
|
||||
select count(*) = 1 from information_schema.processlist
|
||||
where state = "Waiting for release of readlock";
|
||||
--source include/wait_condition.inc
|
||||
select * from t1;
|
||||
unlock tables;
|
||||
connection insert;
|
||||
--reap
|
||||
connection default;
|
||||
let $wait_condition=
|
||||
select count(*) = 1 from t1;
|
||||
--source include/wait_condition.inc
|
||||
select * from t1;
|
||||
drop table t1;
|
||||
disconnect flush;
|
||||
disconnect insert;
|
||||
|
||||
#
|
||||
# Test that FLUSH TABLES under LOCK TABLES protects write locked tables
|
||||
# from a impending FLUSH TABLES WITH READ LOCK
|
||||
#
|
||||
|
||||
--disable_warnings
|
||||
drop table if exists t1;
|
||||
--enable_warnings
|
||||
create table t1 (i int);
|
||||
connect (flush,localhost,root,,test,,);
|
||||
connection default;
|
||||
--echo connection: default
|
||||
lock tables t1 write;
|
||||
connection flush;
|
||||
--echo connection: flush
|
||||
--send flush tables with read lock;
|
||||
connection default;
|
||||
--echo connection: default
|
||||
let $wait_condition=
|
||||
select count(*) = 1 from information_schema.processlist
|
||||
where state = "Flushing tables";
|
||||
--source include/wait_condition.inc
|
||||
flush tables;
|
||||
let $wait_condition=
|
||||
select count(*) = 1 from information_schema.processlist
|
||||
where state = "Flushing tables";
|
||||
--source include/wait_condition.inc
|
||||
unlock tables;
|
||||
let $wait_condition=
|
||||
select count(*) = 0 from information_schema.processlist
|
||||
where state = "Flushing tables";
|
||||
--source include/wait_condition.inc
|
||||
connection flush;
|
||||
--reap
|
||||
connection default;
|
||||
disconnect flush;
|
||||
drop table t1;
|
||||
|
||||
#
|
||||
# Bug#30331 Table_locks_waited shows inaccurate values
|
||||
#
|
||||
|
||||
--disable_warnings
|
||||
drop table if exists t1,t2;
|
||||
--enable_warnings
|
||||
create table t1 (a int);
|
||||
flush status;
|
||||
lock tables t1 read;
|
||||
let $tlwa= `show status like 'Table_locks_waited'`;
|
||||
connect (waiter,localhost,root,,);
|
||||
connection waiter;
|
||||
--send insert into t1 values(1);
|
||||
connection default;
|
||||
let $wait_condition=
|
||||
select count(*) = 1 from information_schema.processlist
|
||||
where state = "Locked" and info = "insert into t1 values(1)";
|
||||
--source include/wait_condition.inc
|
||||
let $tlwb= `show status like 'Table_locks_waited'`;
|
||||
unlock tables;
|
||||
connection waiter;
|
||||
--reap
|
||||
connection default;
|
||||
drop table t1;
|
||||
disconnect waiter;
|
||||
--disable_query_log
|
||||
eval SET @tlwa= SUBSTRING_INDEX('$tlwa', ' ', -1);
|
||||
eval SET @tlwb= SUBSTRING_INDEX('$tlwb', ' ', -1);
|
||||
--enable_query_log
|
||||
select @tlwa < @tlwb;
|
||||
|
||||
--echo End of 5.1 tests
|
||||
|
||||
# Wait till all disconnects are completed
|
||||
--source include/wait_until_count_sessions.inc
|
||||
|
||||
Reference in New Issue
Block a user