Re: Parallel scan with SubTransGetTopmostTransaction assert coredump

From: Pavel Borisov <pashkin(dot)elfe(at)gmail(dot)com>
To: Greg Nancarrow <gregn4422(at)gmail(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: Maxim Orlov <m(dot)orlov(at)postgrespro(dot)ru>, Michael Paquier <michael(at)paquier(dot)xyz>, Pengchengliu <pengchengliu(at)tju(dot)edu(dot)cn>, Andres Freund <andres(at)anarazel(dot)de>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Parallel scan with SubTransGetTopmostTransaction assert coredump
Date: 2021-06-24 13:09:09
Message-ID: CALT9ZEGzD+a8BdYMirNS0stf_qi4uV=hAnK4k3G=Pb37KVWcyQ@mail.gmail.com
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By the way in the initial discussion on parallel infrastructure
https://www.postgresql.org/message-id/20150208002027.GH9201%40alap3.anarazel.de
I've seen a proposal to set the worker's PGXACT->xmin
to be the minimum of the top transaction id and the snapshots.

--
Best regards,
Pavel Borisov

Postgres Professional: http://postgrespro.com <http://www.postgrespro.com>

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