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653f14c265
thd->in_sub_stmt
In a precursor patch for Bug#52044
(revid:bzr/kostja@stripped), a
number of reorganizations of code was made. In addition some
assertions were added to ensure the correct transactional state.
The reorganization had a small glitch so statements that was
active in the query cache was not followed by a
statement commit/rollback (this code was removed). A section
in the trans_commit_stmt/trans_rollback_stmt code is to
clear the thd->transaction.stmt list of affected storage
engines. When a new statement is initiated, an assert
introduced by the 523044 patch checks if this list is cleared.
When the query cache is accessed, this list may be populated,
and since it's not committed it will not be cleared.
This fix adds explicit statement commit or rollback for
statements that is contained in the query cache.
233 lines
5.3 KiB
Text
233 lines
5.3 KiB
Text
SET SESSION STORAGE_ENGINE = InnoDB;
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drop table if exists t1,t2,t3;
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flush status;
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set autocommit=0;
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create table t1 (a int not null);
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insert into t1 values (1),(2),(3);
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select * from t1;
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a
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1
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2
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3
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show status like "Qcache_queries_in_cache";
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Variable_name Value
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Qcache_queries_in_cache 0
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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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create table t1 (a int not null);
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insert into t1 values (1),(2),(3);
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select * from t1;
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a
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1
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2
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3
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show status like "Qcache_queries_in_cache";
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Variable_name Value
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Qcache_queries_in_cache 1
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drop table t1;
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commit;
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create table t1 (a int not null);
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create table t2 (a int not null);
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create table t3 (a int not null);
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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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select * from t1;
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a
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1
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2
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select * from t2;
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a
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1
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2
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select * from t3;
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a
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1
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2
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show status like "Qcache_queries_in_cache";
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Variable_name Value
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Qcache_queries_in_cache 3
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show status like "Qcache_hits";
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Variable_name Value
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Qcache_hits 0
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begin;
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select * from t1;
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a
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1
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2
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select * from t2;
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a
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1
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2
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select * from t3;
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a
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1
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2
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show status like "Qcache_queries_in_cache";
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Variable_name Value
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Qcache_queries_in_cache 6
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show status like "Qcache_hits";
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Variable_name Value
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Qcache_hits 0
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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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select * from t1;
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a
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1
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2
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3
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4
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select * from t2;
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a
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1
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2
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3
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select * from t3;
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a
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1
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2
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show status like "Qcache_queries_in_cache";
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Variable_name Value
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Qcache_queries_in_cache 2
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show status like "Qcache_hits";
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Variable_name Value
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Qcache_hits 1
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commit;
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show status like "Qcache_queries_in_cache";
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Variable_name Value
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Qcache_queries_in_cache 2
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drop table t3,t2,t1;
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CREATE TABLE t1 (id int(11) NOT NULL auto_increment, PRIMARY KEY (id));
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select count(*) from t1;
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count(*)
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0
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insert into t1 (id) values (0);
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select count(*) from t1;
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count(*)
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1
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drop table t1;
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set GLOBAL query_cache_size=1355776;
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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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id a
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begin;
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insert into t3 VALUES ( NULL, 1, 1, 2 );
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insert into t3 VALUES ( NULL, 1, 1, 2 );
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ERROR 23000: Duplicate entry '1-1' for key 't1_id'
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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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id a
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1 me
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drop table t3,t2,t1;
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SET SESSION STORAGE_ENGINE = InnoDB;
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SET @@autocommit=1;
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connection default
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SHOW VARIABLES LIKE 'have_query_cache';
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Variable_name Value
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have_query_cache YES
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SET GLOBAL query_cache_size = 204800;
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flush status;
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SET @@autocommit=1;
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SET SESSION STORAGE_ENGINE = InnoDB;
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CREATE TABLE t2 (s1 int, s2 varchar(1000), key(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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count(*)
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0
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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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count(*)
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1
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show status like "Qcache_queries_in_cache";
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Variable_name Value
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Qcache_queries_in_cache 0
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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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count(*)
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0
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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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count(*)
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1
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COMMIT;
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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count(*)
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1
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show status like "Qcache_queries_in_cache";
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Variable_name Value
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Qcache_queries_in_cache 0
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connection default
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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count(*)
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1
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COMMIT;
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show status like "Qcache_queries_in_cache";
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Variable_name Value
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Qcache_queries_in_cache 0
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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count(*)
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2
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show status like "Qcache_queries_in_cache";
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Variable_name Value
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Qcache_queries_in_cache 1
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connection connection1
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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count(*)
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2
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START TRANSACTION;
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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count(*)
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2
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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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count(*)
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3
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connection default
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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count(*)
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2
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START TRANSACTION;
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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count(*)
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2
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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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count(*)
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1
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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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count(*)
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2
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show status like "Qcache_queries_in_cache";
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Variable_name Value
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Qcache_queries_in_cache 1
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show status like "Qcache_hits";
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Variable_name Value
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Qcache_hits 1
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set GLOBAL query_cache_size=1048576;
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drop table t2;
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CREATE TABLE t1 (a INT) ENGINE=InnoDB;
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BEGIN;
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INSERT INTO t1 VALUES(1);
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ROLLBACK WORK AND CHAIN NO RELEASE;
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SELECT a FROM t1;
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a
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ROLLBACK WORK AND CHAIN NO RELEASE;
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SELECT a FROM t1;
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a
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ROLLBACK;
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DROP TABLE t1;
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