| From: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> |
|---|---|
| To: | Mark Kirkwood <mark(dot)kirkwood(at)catalyst(dot)net(dot)nz> |
| Cc: | Andrew Sackville-West <awest(at)janrain(dot)com>, pgsql-bugs(at)postgresql(dot)org, Paulo Tanimoto <paulo(at)janrain(dot)com> |
| Subject: | Re: regression, deadlock in high frequency single-row UPDATE |
| Date: | 2014-12-12 21:57:52 |
| Message-ID: | 20141212215752.GF1768@alvh.no-ip.org |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-bugs |
Alvaro Herrera wrote:
> Alvaro Herrera wrote:
>
> > I'm going to experiment with that idea and see if it leads to a
> > solution. I tried the other idea yesterday (to keep the HW tuple lock
> > we acquire in heap_lock_tuple until heap_update is done) but aside from
> > being very complicated and bug-prone, it doesn't solve the problem
> > anyway.
>
> Here's a preliminary patch.
Here's a finished version of this patch, which I messed a bit with and
so needs some extra testing. I want to push this shortly and backpatch
to 9.4 and 9.3. I don't want to disrupt the 9.4.0 release next week,
but it'd be nice not to ship it with this bug.
--
Álvaro Herrera http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
| Attachment | Content-Type | Size |
|---|---|---|
| deadlock-2.patch | text/x-diff | 11.9 KB |
| From | Date | Subject | |
|---|---|---|---|
| Next Message | jonlachlan | 2014-12-13 22:11:34 | BUG #12228: Primary use-case of PERCENT_RANK not supported |
| Previous Message | Peter Geoghegan | 2014-12-12 21:31:56 | Re: regression, deadlock in high frequency single-row UPDATE |