On Fri, Jul 2, 2021 at 12:50 AM Bruce Momjian <bruce@momjian.us> wrote:
>
> On Thu, Jul 1, 2021 at 03:13:30PM +0100, Simon Riggs wrote:
> > On Wed, Jun 30, 2021 at 11:20 PM Bruce Momjian <bruce@momjian.us> wrote:
> > > > * "row expiration" is a term not currently used in PG docs, so we
> > > > should probably look for something else.
> > >
> > > Yeah, I changed that to "removing dead rows" which seems to be our
> > > standard text.
> >
> > What you have now looks great for this feature, thanks.
>
> Good.
>
> > > > There are 2 important features here, so the 2nd feature is worth
> > > > mentioning also:
> > > >
> > > > Avoid spurious waits in concurrent indexing
> > > >
> > > > Previously, multiple concurrent index operations could deadlock or
> > > > cause long waits.
> > > > Waits are avoided except for indexes with expressions, or WHERE predicates.
> > >
> > > OK, I added text to the bottom to try and capture that; new patch
> > > attached, now with UTF8 encoding.
> >
> > The text from "This also avoids..." tries to explain this, but they
> > are two separate features, each important in its own right.
> >
> > So regrettably, this part doesn't capture it, for me.
>
> I see what you mean. This is in the VACUUM section, and this feature,
> though from the same commits, has nothing to do with vacuum. Attached
> is an updated patch.
Perfect, many thanks.
--
Simon Riggs http://www.EnterpriseDB.com/
