Re: GIN improvements part2: fast scan
| От | Alexander Korotkov |
|---|---|
| Тема | Re: GIN improvements part2: fast scan |
| Дата | |
| Msg-id | CAPpHfdtsDe-O6oQdCZUh6N1gGOMz0XKTMNQro-fueg-R06PaWw@mail.gmail.com обсуждение исходный текст |
| Ответ на | Re: GIN improvements part2: fast scan (Heikki Linnakangas <hlinnakangas@vmware.com>) |
| Ответы |
Re: GIN improvements part2: fast scan
Re: GIN improvements part2: fast scan Re: GIN improvements part2: fast scan |
| Список | pgsql-hackers |
On Sun, Jun 30, 2013 at 3:00 PM, Heikki Linnakangas <hlinnakangas@vmware.com> wrote:
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With best regards,
Alexander Korotkov.
On 28.06.2013 22:31, Alexander Korotkov wrote:I'm going to mark this as "returned with feedback". For the next version, I'd like to see the API changed per above. Also, I'd like us to do something about the tidbitmap overhead, as a separate patch before this, so that we can assess the actual benefit of this patch. And a new test case that demonstrates the I/O benefits.Now, I got the point of three state consistent: we can keep only one
consistent in opclasses that support new interface. exact true and exact
false values will be passed in the case of current patch consistent; exact
false and unknown will be passed in the case of current patch
preConsistent. That's reasonable.
Revised version of patch is attached.
Changes are so:
1) Patch rebased against packed posting lists, not depends on additional information now.
2) New API with tri-state logic is introduced.
With best regards,
Alexander Korotkov.
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