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Making FLUSH TABLES WITH READ LOCK block COMMITs of existing transactions,

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in a deadlock-free manner. This splits locking the global read lock in two steps.
This fixes a consequence of this bug, known as:
BUG#4953 'mysqldump --master-data may report incorrect binlog position if using InnoDB'
And a test.
This commit is contained in:
guilhem@mysql.com
2004-08-20 16:35:23 +02:00
parent 96a000ae78
commit 5db56a106b
9 changed files with 154 additions and 21 deletions
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23
mysql-test/r/flush_block_commit.result Normal file
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drop table if exists t1;
create table t1 (a int) type=innodb;
begin;
insert into t1 values(1);
flush tables with read lock;
select * from t1;
a
commit;
select * from t1;
a
unlock tables;
begin;
select * from t1 for update;
a
1
begin;
select * from t1 for update;
flush tables with read lock;
commit;
a
1
unlock tables;
drop table t1;