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From: Stefan Knecht <[email protected]>
To: Daniele Varrazzo <[email protected]>
Cc: [email protected]
Subject: Re: Puzzling situation with threads and psycopg2 on RDS
Date: Mon, 17 Oct 2022 19:08:27 +0700
Message-ID: <CAP50yQ8iGb+eCeUjpE2h+t2UR+Lqu2cfoqAq0B==iS9Q+vEEZg@mail.gmail.com> (raw)
In-Reply-To: <CA+mi_8aX4FsE6=HWF08tf579G8Wgg9cQOtN2BkmtTehyxAb5FA@mail.gmail.com>
References: <CAP50yQ-PUwP80+awO-U3Ud45HCZHZ=fjK3L2iWh4CfcEPF1p6A@mail.gmail.com>
	<CA+mi_8aX4FsE6=HWF08tf579G8Wgg9cQOtN2BkmtTehyxAb5FA@mail.gmail.com>

Ciao Daniele

Thanks for looking at this.



> I understand this happens on RDS. Does it happen on normal Postgres
> too, from a normal process (not some serverless thing?)
>
>
I'll test this now.


> Are there processes/forks involved?


No, just Python's basic threading.


> Which version of psycopg are you
> using? Some old one have problems with closing connections in
> multiprocess environments. That was fixed in psycopg 2.8 (#829).
>
>
This is psycopg 3.1.3

And I just realized that all the other threading code I've got is on
psycopg2-binary 2.8. Has there something changed with threads in v3 ?



Stefan


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