| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov> |
| Cc: | Alvaro Herrera <alvherre(at)commandprompt(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, pgsql-hackers(at)postgresql(dot)org, Albe Laurenz <laurenz(dot)albe(at)wien(dot)gv(dot)at> |
| Subject: | Re: Update on true serializable techniques in MVCC |
| Date: | 2009-12-16 20:27:13 |
| Message-ID: | 603c8f070912161227t24f1904eve870a429288a2973@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Wed, Dec 16, 2009 at 1:30 PM, Kevin Grittner
<Kevin(dot)Grittner(at)wicourts(dot)gov> wrote:
> Alvaro Herrera <alvherre(at)commandprompt(dot)com> wrote:
>
>> So you'd have to disable HOT updates when true serializability was
>> active?
>
> I wouldn't think so; but someone familiar with HOT logic could
> probably determine whether the unmodified algorithm could be used by
> reviewing the "simplifying assumptions" near the bottom of page 42,
> and the page about "Generalizing to other database engines" (section
> 4.8). I think those portions might stand on their own without
> reading the rest of the document.
This thread veered off into a discussion of the traditional technique,
rather than the one in the paper. I think that's the part Alvaro was
responding to.
...Robert
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