On Mon, Mar 3, 2014 at 8:33 AM, Andres Freund wrote:
> On 2014-03-03 06:57:00 -0500, Robert Haas wrote:
>> On Sun, Mar 2, 2014 at 8:39 AM, Andres Freund wrote:
>> > I don't think this is neccessary >= 9.2. The are two only "interestings"
>> > place
>> > where PD_ALL_VISIBLE is set:
>> > a) lazy_
On 2014-03-03 06:57:00 -0500, Robert Haas wrote:
> On Sun, Mar 2, 2014 at 8:39 AM, Andres Freund wrote:
> > I don't think this is neccessary >= 9.2. The are two only "interestings"
> > place
> > where PD_ALL_VISIBLE is set:
> > a) lazy_vacuum_page() where a xl_heap_clean is logged *before*
> >
On Mon, Mar 3, 2014 at 7:07 AM, Andres Freund wrote:
>> I don't think there's any reason to believe that lazy_scan_heap() can
>> only hit pages that are empty or have just been defragged. Suppose
>> that there's a tuple on the page which was recently inserted; the
>> inserting transaction has com
On 2014-03-03 06:57:00 -0500, Robert Haas wrote:
> On Sun, Mar 2, 2014 at 8:39 AM, Andres Freund wrote:
> > While reading around which references to SnapshotData's members exist, I
> > once more came about the following tidbit in heapgetpage():
> > /*
> > * If the all-visible flag
On Sun, Mar 2, 2014 at 8:39 AM, Andres Freund wrote:
> While reading around which references to SnapshotData's members exist, I
> once more came about the following tidbit in heapgetpage():
> /*
> * If the all-visible flag indicates that all tuples on the page are
> * vis
