| From: | Andres Freund <andres(at)2ndquadrant(dot)com> |
|---|---|
| To: | pgsql-bugs(at)postgresql(dot)org |
| Cc: | Valentine Gogichashvili <valgog(at)gmail(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com> |
| Subject: | Re: BUG #6661: out-of-order XID insertion in KnownAssignedXids |
| Date: | 2012-06-08 10:42:00 |
| Message-ID: | 201206081242.00890.andres@2ndquadrant.com |
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| Thread: | |
| Lists: | pgsql-bugs |
Hi Valentine,
On Friday, June 08, 2012 12:25:25 PM Valentine Gogichashvili wrote:
> unfortunately I did not manage to keep the snapshot of the database, that
> had this issue.
Too bad. Let me try if I can reproduce it manually.
> Can that be, that this issue only happens when the recovering from the WAL
> files and not over the steaming replication?
> On other standbys, having no WAL delay, we did not see this problem yet.
No, the delivery method is not relevant. The relevant part is when the standby
was started. A bit tricky to hit the right spot ;)
> Would it be possible to somehow generate a workload, that would lead to
> this a problem?
I think I can do that. Let me play for a bit.
Andres
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