| From: | Andres Freund <af(at)cybertec(dot)de> |
|---|---|
| To: | pgsql-hackers(at)postgresql(dot)org |
| Cc: | Simon Riggs <simon(at)2ndquadrant(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
| Subject: | Re: Small Bug in GetConflictingVirtualXIDs |
| Date: | 2009-12-22 18:03:20 |
| Message-ID: | 200912221903.20624.af@cybertec.de |
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| Lists: | pgsql-hackers |
On Tuesday 22 December 2009 11:42:30 Simon Riggs wrote:
> On Tue, 2009-12-22 at 03:19 +0100, Andres Freund wrote:
> > On Monday 21 December 2009 16:48:52 Simon Riggs wrote:
> > > Giving the drop database a snapshot is not the answer. I expect Andres
> > > to be able to fix this with a simple patch that would not effect the
> > > case of normal running.
> >
> > Actually its less simply than I had thought at first - I don't think the
> > code ever handled that correctly.
> > I might be wrong there, my knowledge of the involved code is a bit
> > sparse... The whole conflict resolution builds on the concept of waiting
> > for an VXid, but an idle backend does not have a valid vxid. Thats
> > correct, right?
>
> Yes, that's correct. I'll take this one back then.
So youre writing a fix or shall I?
Andres
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