Re: Introduce XID age and inactive timeout based replication slot invalidation

On Mon, Mar 11, 2024 at 04:09:27PM +0530, Amit Kapila wrote:
> I don't see how it will be easier for the user to choose the default
> value of 'max_slot_xid_age' compared to 'max_slot_wal_keep_size'. But,
> I agree similar to 'max_slot_wal_keep_size', 'max_slot_xid_age' can be
> another parameter to allow vacuum to proceed removing the rows which
> otherwise it wouldn't have been as those would be required by some
> slot.

Yeah, the idea is to help prevent transaction ID wraparound, so I would
expect max_slot_xid_age to ordinarily be set relatively high, i.e., 1.5B+.

-- 
Nathan Bossart
Amazon Web Services: https://aws.amazon.com