Re: Page at a time index scan

Heikki Linnakangas <hlinnaka@iki.fi> writes:
> On Tue, 2 May 2006, Tom Lane wrote:
>> Backwards scan may break this whole concept; are you sure you've thought
>> it through?

> I think so. The patch doesn't change the walk-left code. Do you have
> something specific in mind?

I'm worried about synchronization, particularly what happens if the page
gets deleted from under you while you don't have it pinned.

            regards, tom lane