| From: | Heikki Linnakangas <heikki(at)enterprisedb(dot)com> |
|---|---|
| To: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
| Cc: | "Jim C(dot) Nasby" <decibel(at)decibel(dot)org>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Chris Browne <cbbrowne(at)acm(dot)org>, pgsql-patches(at)postgresql(dot)org, Heikki Linnakangas <hlinnaka(at)iki(dot)fi> |
| Subject: | Re: [DOCS] Autovacuum and XID wraparound |
| Date: | 2007-05-16 08:22:02 |
| Message-ID: | 464ABF2A.3000005@enterprisedb.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-docs pgsql-patches |
Alvaro Herrera wrote:
> In any case the change is a very small patch, which I attach but I
> haven't tested. This only works if the new rewriteheap stuff actually
> changes Xids to follow OldestXmin, i.e. all tuples that have older
> Xmin/Xmax are frozen (or marked with the current Xid). Heikki, can you
> confirm that this is the case?
No, CLUSTER doesn't freeze tuples. It could do that easily, it didn't
occur to me when I wrote it. It would make it harder to debug, though,
should we have any problems with it in the future.
--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Alvaro Herrera | 2007-05-16 12:44:20 | Re: [DOCS] Autovacuum and XID wraparound |
| Previous Message | Heikki Linnakangas | 2007-05-16 08:12:23 | Re: [PATCHES] OS/X startup scripts |
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Alvaro Herrera | 2007-05-16 12:44:20 | Re: [DOCS] Autovacuum and XID wraparound |
| Previous Message | Heikki Linnakangas | 2007-05-16 08:12:23 | Re: [PATCHES] OS/X startup scripts |