Horton

Re: Sometimes the output to the stdout in Windows disappears

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Victor Spirin <v.spirin@postgrespro.ru>
Cc: pgsql-hackers@lists.postgresql.org
Date: 2020-09-13T18:37:08Z
Lists: pgsql-hackers 
I happened to try googling for other similar reports, and I found
a very interesting recent thread here:

https://github.com/nodejs/node/issues/33166

It might not have the same underlying cause, of course, but it sure
sounds familiar.  If Node.js are really seeing the same effect,
that would point to an underlying Windows bug rather than anything
Postgres is doing wrong.

It doesn't look like the Node.js crew got any closer to
understanding the issue than we have, unfortunately.  They made
their problem mostly go away by reverting a seemingly-unrelated
patch.  But I can't help thinking that it's a timing-related bug,
and that patch was just unlucky enough to change the timing of
their tests so that they saw the failure frequently.

			regards, tom lane

Commits

  1. In libpq for Windows, call WSAStartup once and WSACleanup not at all.

  2. Update the Winsock API version requested by libpq.