Postgres Pro
Downloads
Home   >   mailing lists

Re: UNDO and in-place update - Mailing list pgsql-hackers

From Peter Geoghegan
Subject Re: UNDO and in-place update
Date
Msg-id CAM3SWZSKjNfw=C0PgmAa0Eh=9By-1CfBXc_c4PQ08OPntC0Gaw@mail.gmail.com
Whole thread Raw
In response to UNDO and in-place update  (Robert Haas <robertmhaas@gmail.com>)
Responses Re: UNDO and in-place update  (Greg Stark <stark@mit.edu>)
List pgsql-hackers
Tree view 
On Tue, Nov 22, 2016 at 7:01 PM, Robert Haas <robertmhaas@gmail.com> wrote:
> This basic DO-UNDO-REDO protocol has been well-understood for
> decades.

FWIW, while this is basically true, the idea of repurposing UNDO to be
usable for MVCC is definitely an Oracleism. Mohan's ARIES paper says
nothing about MVCC.


-- 
Peter Geoghegan

pgsql-hackers by date:

Previous
From: Amit Kapila
Date:
Subject: Re: UNDO and in-place update
Next
From: Amit Kapila
Date:
Subject: Re: UNDO and in-place update