Reading How AUTO_INCREMENT Handling Works in InnoDB[1] makes me
wonder how is it possible to replicate AUTO_INCREMENTed value to slaves.
According to the doc,
"If you specify an AUTO_INCREMENT column for an InnoDB table, the
table handle in the InnoDB data dictionary contains a special counter
called the auto-increment counter that is used in assigning new values
for the column. This counter is stored only in main memory, not on
disk."
Let's say there are two server, A and B. A replicates its data to B, the slave.
A and B has a table that looks like(column 'id' is auto_increment field)
id value
1 a
2 b
3 c
4 d
If After "delete from table where id = 4" and restart mysqld on server B,
"insert into table (value) values(e)" is executed on server A.
Why would you delete data from the slave?
In this case, because A's internal counter is 4, table on A would be
1 a
2 b
3 c
5 e
But B's would be different because restarting mysqld flushed InnoDB's
internal counter.
1 a
2 b
3 c
4 e
Is this correct?
or MySQL is smart enough to handle this problem?
Thanks.
[1]http://dev.mysql.com/doc/refman/4.1/en/innodb-auto-increment-handling.html
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