mirror of
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bead24b7f3
Remove one of the major sources of race condiitons in mariadb-test. Normally, mariadb_close() sends COM_QUIT to the server and immediately disconnects. In mariadb-test it means the test can switch to another connection and sends queries to the server before the server even started parsing the COM_QUIT packet and these queries can see the connection as fully active, as it didn't reach dispatch_command yet. This is a major source of instability in tests and many - but not all, still less than a half - tests employ workarounds. The correct one is a pair count_sessions.inc/wait_until_count_sessions.inc. Also very popular was wait_until_disconnected.inc, which was completely useless, because it verifies that the connection is closed, and after disconnect it always is, it didn't verify whether the server processed COM_QUIT. Sadly the placebo was as widely used as the real thing. Let's fix this by making mariadb-test `disconnect` command _to wait_ for the server to confirm. This makes almost all workarounds redundant. In some cases count_sessions.inc/wait_until_count_sessions.inc is still needed, though, as only `disconnect` command is changed: * after external tools, like `exec $MYSQL` * after failed `connect` command * replication, after `STOP SLAVE` * Federated/CONNECT/SPIDER/etc after `DROP TABLE` and also in some XA tests, because an XA transaction is dissociated from the THD very late, after the server has closed the client connection. Collateral cleanups: fix comments, remove some redundant statements: * DROP IF EXISTS if nothing is known to exist * DROP table/view before DROP DATABASE * REVOKE privileges before DROP USER etc
200 lines
5.8 KiB
PHP
200 lines
5.8 KiB
PHP
# include/query_cache.inc
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#
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# The variables
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# $engine_type -- storage engine to be tested
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# $test_foreign_keys -- 0, skip foreign key tests
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# -- 1, do not skip foreign key tests
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# $partitions_a -- partition by column 'a'
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# $partitions_id -- partition by column 'id'
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# $partitions_s1 -- partition by column 's1'
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# have to be set before sourcing this script.
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#
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# Last update:
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# 2006-08-02 ML test refactored
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# old name was innodb_cache.test
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# main code went into include/query_cache.inc
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#
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--disable_ps2_protocol
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--disable_view_protocol
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SET global query_cache_type=ON;
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SET local query_cache_type=ON;
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eval SET SESSION DEFAULT_STORAGE_ENGINE = $engine_type;
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# Initialise
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--disable_warnings
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drop table if exists t1,t2,t3;
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--enable_warnings
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set @save_query_cache_size = @@global.query_cache_size;
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set GLOBAL query_cache_size = 1355776;
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--disable_cursor_protocol
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#
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# Without auto_commit.
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#
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flush global status;
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set autocommit=0;
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eval create table t1 (a int not null)$partitions_a;
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insert into t1 values (1),(2),(3);
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--sorted_result
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select * from t1;
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show status like "Qcache_queries_in_cache";
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drop table t1;
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commit;
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set autocommit=1;
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begin;
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eval create table t1 (a int not null)$partitions_a;
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insert into t1 values (1),(2),(3);
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--sorted_result
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select * from t1;
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show status like "Qcache_queries_in_cache";
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drop table t1;
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commit;
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eval create table t1 (a int not null)$partitions_a;
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eval create table t2 (a int not null)$partitions_a;
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eval create table t3 (a int not null)$partitions_a;
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insert into t1 values (1),(2);
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insert into t2 values (1),(2);
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insert into t3 values (1),(2);
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--sorted_result
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select * from t1;
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--sorted_result
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select * from t2;
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--sorted_result
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select * from t3;
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show status like "Qcache_queries_in_cache";
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show status like "Qcache_hits";
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begin;
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--sorted_result
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select * from t1;
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--sorted_result
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select * from t2;
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--sorted_result
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select * from t3;
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show status like "Qcache_queries_in_cache";
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show status like "Qcache_hits";
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insert into t1 values (3);
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insert into t2 values (3);
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insert into t1 values (4);
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--sorted_result
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select * from t1;
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--sorted_result
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select * from t2;
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--sorted_result
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select * from t3;
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show status like "Qcache_queries_in_cache";
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show status like "Qcache_hits";
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commit;
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show status like "Qcache_queries_in_cache";
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drop table t3,t2,t1;
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--enable_cursor_protocol
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eval CREATE TABLE t1 (id int(11) NOT NULL auto_increment, PRIMARY KEY (id))$partitions_id;
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select count(*) from t1;
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insert into t1 (id) values (0);
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select count(*) from t1;
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drop table t1;
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if ($test_foreign_keys)
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{
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#
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# one statement roll back inside transation
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#
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CREATE TABLE t1 ( id int(10) NOT NULL auto_increment, a varchar(25) default NULL, PRIMARY KEY (id), UNIQUE KEY a (a));
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CREATE TABLE t2 ( id int(10) NOT NULL auto_increment, b varchar(25) default NULL, PRIMARY KEY (id), UNIQUE KEY b (b));
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CREATE TABLE t3 ( id int(10) NOT NULL auto_increment, t1_id int(10) NOT NULL default '0', t2_id int(10) NOT NULL default '0', state int(11) default NULL, PRIMARY KEY (id), UNIQUE KEY t1_id (t1_id,t2_id), KEY t2_id (t2_id,t1_id), CONSTRAINT `t3_ibfk_1` FOREIGN KEY (`t1_id`) REFERENCES `t1` (`id`), CONSTRAINT `t3_ibfk_2` FOREIGN KEY (`t2_id`) REFERENCES `t2` (`id`));
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INSERT INTO t1 VALUES (1,'me');
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INSERT INTO t2 VALUES (1,'you');
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INSERT INTO t3 VALUES (2,1,1,2);
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delete from t3 where t1_id = 1 and t2_id = 1;
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select t1.* from t1, t2, t3 where t3.state & 1 = 0 and t3.t1_id = t1.id and t3.t2_id = t2.id and t1.id = 1 order by t1.a asc;
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begin;
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insert into t3 VALUES ( NULL, 1, 1, 2 );
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-- error ER_DUP_ENTRY
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insert into t3 VALUES ( NULL, 1, 1, 2 );
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commit;
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select t1.* from t1, t2, t3 where t3.state & 1 = 0 and t3.t1_id = t1.id and t3.t2_id = t2.id and t1.id = 1 order by t1.a asc;
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drop table t3,t2,t1;
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}
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#
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# Test query cache with two interleaving transactions
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#
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# Establish connection1
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connect (connection1,localhost,root,,);
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eval SET SESSION DEFAULT_STORAGE_ENGINE = $engine_type;
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SET @@autocommit=1;
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connection default;
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# This should be 'YES'.
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SHOW VARIABLES LIKE 'have_query_cache';
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--disable_cursor_protocol
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SET GLOBAL query_cache_size = 204800;
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flush global status;
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SET @@autocommit=1;
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eval SET SESSION DEFAULT_STORAGE_ENGINE = $engine_type;
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eval CREATE TABLE t2 (s1 int, s2 varchar(1000), key(s1))$partitions_s1;
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INSERT INTO t2 VALUES (1,repeat('a',10)),(2,repeat('a',10)),(3,repeat('a',10)),(4,repeat('a',10));
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COMMIT;
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START TRANSACTION;
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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UPDATE t2 SET s2 = 'w' WHERE s1 = 3;
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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show status like "Qcache_queries_in_cache";
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connection connection1;
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START TRANSACTION;
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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INSERT INTO t2 VALUES (5,'w');
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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COMMIT;
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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show status like "Qcache_queries_in_cache";
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connection default;
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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COMMIT;
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show status like "Qcache_queries_in_cache";
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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show status like "Qcache_queries_in_cache";
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connection connection1;
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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START TRANSACTION;
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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INSERT INTO t2 VALUES (6,'w');
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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connection default;
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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START TRANSACTION;
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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DELETE from t2 WHERE s1=3;
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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COMMIT;
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connection connection1;
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COMMIT;
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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show status like "Qcache_queries_in_cache";
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show status like "Qcache_hits";
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# Final cleanup
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disconnect connection1;
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connection default;
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set @@global.query_cache_size = @save_query_cache_size;
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drop table t2;
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--enable_cursor_protocol
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SET global query_cache_type=default;
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--enable_view_protocol
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--enable_ps2_protocol
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