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https://github.com/MariaDB/server.git
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bc03c9ef19
upgrading lock, even with low_priority_updates
The problem is that there is no mechanism to control whether a
delayed insert takes a high or low priority lock on a table.
The solution is to modify the delayed insert thread ("handler")
to take into account the global value of low_priority_updates
when taking table locks. The value of low_priority_updates is
retrieved when the insert delayed thread is created and will
remain the same for the duration of the thread.
313 lines
7.5 KiB
Text
313 lines
7.5 KiB
Text
drop table if exists t1;
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create table t1 (a char(10), tmsp timestamp);
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insert into t1 set a = 1;
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insert delayed into t1 set a = 2;
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insert into t1 set a = 3, tmsp=NULL;
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insert delayed into t1 set a = 4;
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insert delayed into t1 set a = 5, tmsp = 19711006010203;
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insert delayed into t1 (a, tmsp) values (6, 19711006010203);
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insert delayed into t1 (a, tmsp) values (7, NULL);
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FLUSH TABLE t1;
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insert into t1 set a = 8,tmsp=19711006010203;
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select * from t1 where tmsp=0;
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a tmsp
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select * from t1 where tmsp=19711006010203;
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a tmsp
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5 1971-10-06 01:02:03
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6 1971-10-06 01:02:03
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8 1971-10-06 01:02:03
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drop table t1;
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create table t1 (a int not null auto_increment primary key, b char(10));
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insert delayed into t1 values (1,"b");
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insert delayed into t1 values (null,"c");
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insert delayed into t1 values (3,"d"),(null,"e");
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insert delayed into t1 values (3,"this will give an","error");
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ERROR 21S01: Column count doesn't match value count at row 1
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FLUSH TABLE t1;
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show status like 'not_flushed_delayed_rows';
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Variable_name Value
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Not_flushed_delayed_rows 0
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select * from t1;
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a b
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1 b
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2 c
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3 d
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4 e
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drop table t1;
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create table t1 (a int not null primary key);
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insert into t1 values (1);
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insert delayed into t1 values (1);
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select * from t1;
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a
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1
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drop table t1;
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CREATE TABLE t1 ( a int(10) NOT NULL auto_increment, PRIMARY KEY (a));
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insert delayed into t1 values(null);
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insert into t1 values(null);
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insert into t1 values(null);
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insert delayed into t1 values(null);
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insert delayed into t1 values(null);
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insert delayed into t1 values(null);
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insert into t1 values(null);
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insert into t1 values(null);
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insert into t1 values(null);
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delete from t1 where a=6;
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insert delayed into t1 values(null);
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insert delayed into t1 values(null);
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insert delayed into t1 values(null);
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insert delayed into t1 values(null);
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FLUSH TABLE t1;
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select * from t1 order by a;
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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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5
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7
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8
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9
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10
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11
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12
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13
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DROP TABLE t1;
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SET @bug20627_old_auto_increment_offset=
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@@auto_increment_offset;
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SET @bug20627_old_auto_increment_increment=
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@@auto_increment_increment;
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SET @bug20627_old_session_auto_increment_offset=
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@@session.auto_increment_offset;
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SET @bug20627_old_session_auto_increment_increment=
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@@session.auto_increment_increment;
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SET @@auto_increment_offset= 2;
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SET @@auto_increment_increment= 3;
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SET @@session.auto_increment_offset= 4;
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SET @@session.auto_increment_increment= 5;
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CREATE TABLE t1 (
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c1 INT NOT NULL AUTO_INCREMENT,
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PRIMARY KEY (c1)
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);
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INSERT INTO t1 VALUES (NULL),(NULL),(NULL);
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SELECT * FROM t1;
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c1
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4
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9
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14
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DROP TABLE t1;
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CREATE TABLE t1 (
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c1 INT NOT NULL AUTO_INCREMENT,
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PRIMARY KEY (c1)
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);
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INSERT DELAYED INTO t1 VALUES (NULL),(NULL),(NULL);
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FLUSH TABLE t1;
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SELECT * FROM t1;
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c1
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4
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9
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14
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DROP TABLE t1;
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SET @@auto_increment_offset=
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@bug20627_old_auto_increment_offset;
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SET @@auto_increment_increment=
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@bug20627_old_auto_increment_increment;
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SET @@session.auto_increment_offset=
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@bug20627_old_session_auto_increment_offset;
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SET @@session.auto_increment_increment=
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@bug20627_old_session_auto_increment_increment;
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SET @bug20830_old_auto_increment_offset=
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@@auto_increment_offset;
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SET @bug20830_old_auto_increment_increment=
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@@auto_increment_increment;
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SET @bug20830_old_session_auto_increment_offset=
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@@session.auto_increment_offset;
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SET @bug20830_old_session_auto_increment_increment=
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@@session.auto_increment_increment;
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SET @@auto_increment_offset= 2;
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SET @@auto_increment_increment= 3;
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SET @@session.auto_increment_offset= 4;
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SET @@session.auto_increment_increment= 5;
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CREATE TABLE t1 (
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c1 INT(11) NOT NULL AUTO_INCREMENT,
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c2 INT(11) DEFAULT NULL,
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PRIMARY KEY (c1)
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);
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SET insert_id= 14;
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INSERT INTO t1 VALUES(NULL, 11), (NULL, 12), (NULL, 13);
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INSERT INTO t1 VALUES(NULL, 21), (NULL, 22), (NULL, 23);
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INSERT INTO t1 VALUES( 69, 31), (NULL, 32), (NULL, 33);
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INSERT INTO t1 VALUES(NULL, 41), (NULL, 42), (NULL, 43);
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SET insert_id= 114;
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INSERT INTO t1 VALUES(NULL, 51), (NULL, 52), (NULL, 53);
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INSERT INTO t1 VALUES(NULL, 61), (NULL, 62), (NULL, 63);
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INSERT INTO t1 VALUES( 49, 71), (NULL, 72), (NULL, 73);
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INSERT INTO t1 VALUES(NULL, 81), (NULL, 82), (NULL, 83);
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SET insert_id= 114;
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INSERT INTO t1 VALUES(NULL, 91);
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ERROR 23000: Duplicate entry '114' for key 'PRIMARY'
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INSERT INTO t1 VALUES (NULL, 92), (NULL, 93);
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SELECT * FROM t1;
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c1 c2
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14 11
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19 12
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24 13
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29 21
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34 22
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39 23
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69 31
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74 32
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79 33
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84 41
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89 42
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94 43
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114 51
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119 52
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124 53
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129 61
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134 62
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139 63
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49 71
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144 72
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149 73
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154 81
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159 82
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164 83
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169 92
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174 93
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SELECT COUNT(*) FROM t1;
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COUNT(*)
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26
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SELECT SUM(c1) FROM t1;
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SUM(c1)
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2569
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DROP TABLE t1;
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CREATE TABLE t1 (
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c1 INT(11) NOT NULL AUTO_INCREMENT,
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c2 INT(11) DEFAULT NULL,
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PRIMARY KEY (c1)
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);
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SET insert_id= 14;
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INSERT DELAYED INTO t1 VALUES(NULL, 11), (NULL, 12), (NULL, 13);
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INSERT DELAYED INTO t1 VALUES(NULL, 21), (NULL, 22), (NULL, 23);
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INSERT DELAYED INTO t1 VALUES( 69, 31), (NULL, 32), (NULL, 33);
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INSERT DELAYED INTO t1 VALUES(NULL, 41), (NULL, 42), (NULL, 43);
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SET insert_id= 114;
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INSERT DELAYED INTO t1 VALUES(NULL, 51), (NULL, 52), (NULL, 53);
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INSERT DELAYED INTO t1 VALUES(NULL, 61), (NULL, 62), (NULL, 63);
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INSERT DELAYED INTO t1 VALUES( 49, 71), (NULL, 72), (NULL, 73);
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INSERT DELAYED INTO t1 VALUES(NULL, 81), (NULL, 82), (NULL, 83);
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SET insert_id= 114;
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INSERT DELAYED INTO t1 VALUES(NULL, 91);
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INSERT DELAYED INTO t1 VALUES (NULL, 92), (NULL, 93);
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FLUSH TABLE t1;
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SELECT * FROM t1;
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c1 c2
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14 11
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19 12
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24 13
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29 21
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34 22
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39 23
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69 31
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74 32
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79 33
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84 41
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89 42
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94 43
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114 51
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119 52
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124 53
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129 61
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134 62
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139 63
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49 71
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144 72
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149 73
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154 81
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159 82
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164 83
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169 92
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174 93
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SELECT COUNT(*) FROM t1;
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COUNT(*)
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26
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SELECT SUM(c1) FROM t1;
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SUM(c1)
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2569
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DROP TABLE t1;
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SET @@auto_increment_offset=
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@bug20830_old_auto_increment_offset;
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SET @@auto_increment_increment=
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@bug20830_old_auto_increment_increment;
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SET @@session.auto_increment_offset=
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@bug20830_old_session_auto_increment_offset;
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SET @@session.auto_increment_increment=
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@bug20830_old_session_auto_increment_increment;
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CREATE TABLE t1(a BIT);
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INSERT DELAYED INTO t1 VALUES(1);
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FLUSH TABLE t1;
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SELECT HEX(a) FROM t1;
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HEX(a)
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1
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DROP TABLE t1;
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CREATE TABLE t1 (a INT);
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INSERT DELAYED INTO t1 SET b= b();
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ERROR 42S22: Unknown column 'b' in 'field list'
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DROP TABLE t1;
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End of 5.0 tests
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DROP TABLE IF EXISTS t1,t2;
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SET SQL_MODE='NO_AUTO_VALUE_ON_ZERO';
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CREATE TABLE `t1` (
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`id` int(11) PRIMARY KEY auto_increment,
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`f1` varchar(10) NOT NULL UNIQUE
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);
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INSERT DELAYED INTO t1 VALUES(0,"test1");
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SELECT * FROM t1;
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id f1
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0 test1
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SET SQL_MODE='PIPES_AS_CONCAT';
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INSERT DELAYED INTO t1 VALUES(0,'a' || 'b');
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SELECT * FROM t1;
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id f1
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0 test1
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1 ab
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SET SQL_MODE='ERROR_FOR_DIVISION_BY_ZERO,STRICT_ALL_TABLES';
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INSERT DELAYED INTO t1 VALUES(mod(1,0),"test3");
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ERROR 22012: Division by 0
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CREATE TABLE t2 (
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`id` int(11) PRIMARY KEY auto_increment,
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`f1` date
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);
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SET SQL_MODE='NO_ZERO_DATE,STRICT_ALL_TABLES,NO_ZERO_IN_DATE';
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INSERT DELAYED INTO t2 VALUES (0,'0000-00-00');
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ERROR 22007: Incorrect date value: '0000-00-00' for column 'f1' at row 1
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INSERT DELAYED INTO t2 VALUES (0,'2007-00-00');
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ERROR 22007: Incorrect date value: '2007-00-00' for column 'f1' at row 1
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DROP TABLE t1,t2;
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set @old_delayed_updates = @@global.low_priority_updates;
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set global low_priority_updates = 1;
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select @@global.low_priority_updates;
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@@global.low_priority_updates
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1
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drop table if exists t1;
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create table t1 (a int, b int);
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insert into t1 values (1,1);
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lock table t1 read;
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connection: update
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insert delayed into t1 values (2,2);;
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connection: select
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select * from t1;
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a b
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1 1
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connection: default
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select * from t1;
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a b
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1 1
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unlock tables;
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select * from t1;
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a b
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1 1
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2 2
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drop table t1;
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set global low_priority_updates = @old_delayed_updates;
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End of 5.1 tests
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