| From: | Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> |
|---|---|
| To: | Heikki Linnakangas <hlinnakangas(at)vmware(dot)com> |
| Cc: | Rajeev rastogi <rajeev(dot)rastogi(at)huawei(dot)com>, Ants Aasma <ants(at)cybertec(dot)at>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Markus Wanner <markus(at)bluegap(dot)ch> |
| Subject: | Re: Proposal for CSN based snapshots |
| Date: | 2014-05-13 06:44:03 |
| Message-ID: | CAA4eK1Jf5=OJ0YwPE_1e8w12-MC9hWHarX5Do+gk_jZysujFdg@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Mon, May 12, 2014 at 7:26 PM, Heikki Linnakangas
<hlinnakangas(at)vmware(dot)com> wrote:
> In theory, we could use a snapshot LSN as the cutoff-point for
> HeapTupleSatisfiesVisibility(). Maybe it's just because this is new, but
> that makes me feel uneasy.
To accomplish this won't XID-CSN map table be required and how will
it be maintained (means when to clear and add a entry to that map table)?
With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com
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