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Fixed a bug checksum table locks the InnoDB table and does not use a

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consistent read (Bug #12669). This fixes InnoDB part of the bug.
This commit is contained in:
jan@hundin.mysql.fi
2005-09-29 08:34:38 +03:00
parent dc50fc2403
commit 6734ca6cbe
3 changed files with 72 additions and 0 deletions
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28
mysql-test/r/innodb.result
View File

@@ -2616,3 +2616,31 @@ SET FOREIGN_KEY_CHECKS=1;
INSERT INTO t2 VALUES(3); INSERT INTO t2 VALUES(3);
ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test/t2`, CONSTRAINT `c1` FOREIGN KEY (`v`) REFERENCES `t1` (`id`)) ERROR 23000: Cannot add or update a child row: a foreign key constraint fails (`test/t2`, CONSTRAINT `c1` FOREIGN KEY (`v`) REFERENCES `t1` (`id`))
DROP TABLE t2; DROP TABLE t2;
create table test_checksum(a int not null) engine=innodb DEFAULT CHARSET=latin1;
insert into test_checksum values (1),(2);
set autocommit=0;
checksum table test_checksum;
Table Checksum
test.test_checksum 1531596814
insert into test_checksum values(3);
checksum table test_checksum;
Table Checksum
test.test_checksum 1531596814
commit;
checksum table test_checksum;
Table Checksum
test.test_checksum 2050879373
commit;
drop table test_checksum;
create table test_checksum(a int not null) engine=innodb DEFAULT CHARSET=latin1;
insert into test_checksum values (1),(2);
set autocommit=1;
checksum table test_checksum;
Table Checksum
test.test_checksum 1531596814
set autocommit=1;
insert into test_checksum values(3);
checksum table test_checksum;
Table Checksum
test.test_checksum 2050879373
drop table test_checksum;

39
mysql-test/t/innodb.test
View File

@@ -1564,3 +1564,42 @@ SET FOREIGN_KEY_CHECKS=1;
INSERT INTO t2 VALUES(3); INSERT INTO t2 VALUES(3);
DROP TABLE t2; DROP TABLE t2;
#
# Test that checksum table uses a consistent read Bug #12669
#
connect (a,localhost,root,,);
connect (b,localhost,root,,);
connection a;
create table test_checksum(a int not null) engine=innodb DEFAULT CHARSET=latin1;
insert into test_checksum values (1),(2);
set autocommit=0;
checksum table test_checksum;
connection b;
insert into test_checksum values(3);
connection a;
#
# Here checksum should not see insert
#
checksum table test_checksum;
connection a;
commit;
checksum table test_checksum;
commit;
drop table test_checksum;
#
# autocommit = 1
#
connection a;
create table test_checksum(a int not null) engine=innodb DEFAULT CHARSET=latin1;
insert into test_checksum values (1),(2);
set autocommit=1;
checksum table test_checksum;
connection b;
set autocommit=1;
insert into test_checksum values(3);
connection a;
#
# Here checksum sees insert
#
checksum table test_checksum;
drop table test_checksum;

5
sql/ha_innodb.cc
View File

@@ -6686,6 +6686,11 @@ ha_innobase::store_lock(
without FOR UPDATE or IN SHARE MODE in select, then without FOR UPDATE or IN SHARE MODE in select, then
we use consistent read for select. */ we use consistent read for select. */
prebuilt->select_lock_type = LOCK_NONE;
prebuilt->stored_select_lock_type = LOCK_NONE;
} else if (thd->lex->sql_command == SQLCOM_CHECKSUM) {
/* Use consistent read for checksum table */
prebuilt->select_lock_type = LOCK_NONE; prebuilt->select_lock_type = LOCK_NONE;
prebuilt->stored_select_lock_type = LOCK_NONE; prebuilt->stored_select_lock_type = LOCK_NONE;
} else { } else {