[HACKERS] Re: [COMMITTERS] pgsql/src/backend/commands (command.c vacuum.c)

[Tom Lane]

"Hiroshi Inoue" <[EMAIL PROTECTED]> writes:
>> Special handling of TOAST relations during VACUUM. TOAST relations
>> are vacuumed while the lock on the master table is still active.

> It seems very dangerous to me.
> When VACUUM of a master table was finished, the transaction is
> in already committed state in many cases. 

I don't see the problem.  If the toast table doesn't get vacuumed,
no real harm is done other than failing to recover space.

                        regards, tom lane