Re: [PATCH 08/16] Introduce the ApplyCache module which can reassemble transactions from a stream of interspersed changes

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Andres Freund <andres(at)2ndquadrant(dot)com>
Cc: Steve Singer <steve(at)ssinger(dot)info>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: [PATCH 08/16] Introduce the ApplyCache module which can reassemble transactions from a stream of interspersed changes
Date: 2012-06-28 16:01:10
Message-ID: CA+TgmoZrS9nMUwc_dAwqfSayr9WZd6K2LBFC3GyVMDkSjG5rOA@mail.gmail.com
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On Tue, Jun 26, 2012 at 8:13 PM, Andres Freund <andres(at)2ndquadrant(dot)com> wrote:
> It even can be significantly higher than max_connections because
> subtransactions are only recognizable as part of their parent transaction
> uppon commit.

I've been wondering whether sub-XID assignment was going to end up on
the list of things that need to be WAL-logged to enable logical
replication. It would be nicer to avoid that if we can, but I have a
feeling that we may not be able to.

--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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