| From: | Heikki Linnakangas <heikki(at)enterprisedb(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)redhat(dot)com> |
| Cc: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, nagy(at)ecircle-ag(dot)com |
| Subject: | Re: CLUSTER and MVCC |
| Date: | 2007-03-13 09:18:50 |
| Message-ID: | 45F66C7A.6070608@enterprisedb.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
Tom Lane wrote:
> Heikki Linnakangas <heikki(at)enterprisedb(dot)com> writes:
>> In each chain, there must be at least one non-dead tuple with xmin <
>> Oldestxmin.
>
> Huh? Typically *all* the tuples but the last are dead, for varying
> values of "dead". Please be more specific what you mean.
I meant dead as in HeapTupleSatisfiesVacuum(...) == HEAPTUPLE_DEAD.
--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com
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