| From: | Noah Misch <noah(at)leadboat(dot)com> |
|---|---|
| To: | Kyotaro Horiguchi <horikyota(dot)ntt(at)gmail(dot)com> |
| Cc: | pgsql-hackers(at)postgresql(dot)org, 9erthalion6(at)gmail(dot)com, andrew(dot)dunstan(at)2ndquadrant(dot)com, hlinnaka(at)iki(dot)fi, robertmhaas(at)gmail(dot)com, michael(at)paquier(dot)xyz |
| Subject: | Re: [HACKERS] WAL logging problem in 9.4.3? |
| Date: | 2019-08-22 04:08:09 |
| Message-ID: | 20190822040809.GA3117472@rfd.leadboat.com |
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| Lists: | pgsql-hackers |
On Wed, Aug 21, 2019 at 04:32:38PM +0900, Kyotaro Horiguchi wrote:
> At Mon, 19 Aug 2019 18:59:59 +0900 (Tokyo Standard Time), Kyotaro Horiguchi <horikyota(dot)ntt(at)gmail(dot)com> wrote in <20190819(dot)185959(dot)118543656(dot)horikyota(dot)ntt(at)gmail(dot)com>
> > At Sat, 17 Aug 2019 20:52:30 -0700, Noah Misch <noah(at)leadboat(dot)com> wrote in <20190818035230(dot)GB3021338(at)rfd(dot)leadboat(dot)com>
> > > For two-phase commit, PrepareTransaction() needs to execute pending syncs.
>
> Now TwoPhaseFileHeader has two new members for pending syncs. It
> is useless on wal-replay, but that is needed for commit-prepared.
Syncs need to happen in PrepareTransaction(), not in commit-prepared. I wrote
about that in https://postgr.es/m/20190820060314.GA3086296@rfd.leadboat.com
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