Alvaro Herrera <[EMAIL PROTECTED]> writes:
> Heikki Linnakangas escribió:
>> and the removed tuples need to be WAL-logged.

> Is this a problem for bgwriter?

bgwriter does checkpoints, which emit WAL records; and they also call
GetOldestXmin.  So we know a-priori that those two things work.  There
may be some other showstopper but I'm not sure what it would be.

                        regards, tom lane

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