| From: | Thomas Munro <thomas(dot)munro(at)gmail(dot)com> |
|---|---|
| To: | Alexander Korotkov <a(dot)korotkov(at)postgrespro(dot)ru> |
| Cc: | Heikki Linnakangas <hlinnaka(at)iki(dot)fi>, Andres Freund <andres(at)anarazel(dot)de>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org>, Andrey Borodin <x4mmm(at)yandex-team(dot)ru> |
| Subject: | Re: Usage of epoch in txid_current |
| Date: | 2019-07-01 23:33:51 |
| Message-ID: | CA+hUKG+a21Ap_PmfHbh8_GTbsKmHpVPh7JfwaXzXcBZyDA=cMw@mail.gmail.com |
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On Sat, Jun 22, 2019 at 11:01 AM Alexander Korotkov
<a(dot)korotkov(at)postgrespro(dot)ru> wrote:
> 3. Change SLRU on-disk format to handle 64-bit xids and multixacts.
> In particular make SLRU page numbers 64-bit too. Add SLRU upgrade
> procedure to pg_upgrade.
+1 for doing this for the xid-indexed SLRUs so the segment file names
are never recycled. Having yet another level of wraparound code to
feed and water and debug is not nice:
https://www.postgresql.org/message-id/flat/20190202083822.GC32531%40gust.leadboat.com
--
Thomas Munro
https://enterprisedb.com
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