| From: | Thomas Munro <thomas(dot)munro(at)gmail(dot)com> |
|---|---|
| To: | Michael Paquier <michael(at)paquier(dot)xyz> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Robert Haas <robertmhaas(at)gmail(dot)com>, Postgres hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Race conditions with checkpointer and shutdown |
| Date: | 2019-04-19 02:47:15 |
| Message-ID: | CA+hUKGL_NfZs652v+2NzXe_mB0Jib1JmcreSozUm5q5v+xWBBQ@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Fri, Apr 19, 2019 at 2:30 PM Michael Paquier <michael(at)paquier(dot)xyz> wrote:
> On Thu, Apr 18, 2019 at 05:57:39PM -0400, Tom Lane wrote:
> > Anyway, this is *not* new in v12.
>
> Indeed. It seems to me that v12 makes the problem easier to appear
> though, and I got to wonder if c6c9474 is helping in that as more
> cases are popping up since mid-March.
Interesting, but I'm not sure how that could be though. Perhaps, a
bit like the other thing that cropped up in the build farm after that
commit, removing ~200ms of needless sleeping around an earlier online
CHECKPOINT made some other pre-existing race condition more likely to
go wrong.
--
Thomas Munro
https://enterprisedb.com
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