| From: | "Zeugswetter Andreas ADI SD" <ZeugswetterA(at)spardat(dot)at> |
|---|---|
| To: | "Pavan Deolasee" <pavan(dot)deolasee(at)gmail(dot)com> |
| Cc: | "Hannu Krosing" <hannu(at)skype(dot)net>, "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us>, "Heikki Linnakangas" <heikki(at)enterprisedb(dot)com>, <mark(at)mark(dot)mielke(dot)cc>, "Simon Riggs" <simon(at)2ndquadrant(dot)com>, <pgsql-hackers(at)postgresql(dot)org>, "Pavan Deolasee" <pavan(dot)deolasee(at)enterprisedb(dot)com>, "Nikhil S" <nikhil(dot)sontakke(at)enterprisedb(dot)com> |
| Subject: | Re: HOT for PostgreSQL 8.3 |
| Date: | 2007-02-16 16:41:32 |
| Message-ID: | E1539E0ED7043848906A8FF995BDA57901C13BF5@m0143.s-mxs.net |
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| Lists: | pgsql-hackers |
> Just to avoid any confusion with the patch I sent out this
> week, we are setting HEAP_UPDATE_ROOT on all tuples which are
> HOT-updated.
>
> We set HEAP_ONLY_TUPLE for all tuples which does not have
> index reference. So may be combination of (HEAP_UPDATE_ROOT &
> ~HEAP_ONLY_TUPLE) can be used to identify index referred
> tuple in a HOT-update chain.
Oh sorry. Thanks for the clarification. Imho HEAP_UPDATE_ROOT should be
renamed for this meaning then (or what does ROOT mean here ?).
Maybe HEAP_UPDATE_CHAIN ?
Andreas
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