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Date: Mon, 13 May 2024 11:26:40 -0700
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Subject: Re: UTC is not a time zone?
To: Christophe Pettus <xof@thebuild.com>, Tom Lane <tgl@sss.pgh.pa.us>
Cc: "pgsql-generallists.postgresql.org" <pgsql-general@lists.postgresql.org>
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From: Adrian Klaver <adrian.klaver@aklaver.com>
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On 5/13/24 11:18 AM, Christophe Pettus wrote:
> 
> 
>> On May 13, 2024, at 11:17, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> What's causing that I can't say.  It doesn't look like we log the
>> errno anywhere when failing to read a zone file :-(
> 
> File descriptor exhaustion?  (Of course, that would mean something somewhere is leaking them, which is another problem.)

If I am understanding this correctly:

"The parent process would long since have cached the zone data in its
memory, but this error is in a parallel worker process, which'd have
to read the file for itself during startup.
"

Then this:

"As an experiment, I'm just pounding the server with a single connection 
doing nothing but SET TIMEZONEs repeatedly.  So far, no break, but it is 
*very* intermittent."

May not induce the error unless there are parallel workers involved.

-- 
Adrian Klaver
adrian.klaver@aklaver.com