Re: Proposal for CSN based snapshots

From: Greg Stark <stark(at)mit(dot)edu>
To: Ants Aasma <ants(at)cybertec(dot)at>
Cc: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Proposal for CSN based snapshots
Date: 2013-06-07 12:47:29
Message-ID: CAM-w4HMKorSG_5wwYu0S3yCS9C4c2+2nN5=7bkUfWpG8unLv2w@mail.gmail.com
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On Thu, Jun 6, 2013 at 11:42 PM, Ants Aasma <ants(at)cybertec(dot)at> wrote:
> To refresh your memory the basic idea is to change visibility
> determination to be based on a commit sequence number (CSN for short)
> - a 8 byte number incremented on every commit representing the total
> ordering of commits

I think we would just use the LSN of the commit record which is
effectively the same but doesn't require a new counter.
I don't think this changes anything though.

--
greg

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