Re: Logical Replication WIP

From: Peter Eisentraut <peter(dot)eisentraut(at)2ndquadrant(dot)com>
To: Petr Jelinek <petr(dot)jelinek(at)2ndquadrant(dot)com>, Erik Rijkers <er(at)xs4all(dot)nl>
Cc: Andres Freund <andres(at)anarazel(dot)de>, Steve Singer <steve(at)ssinger(dot)info>, Craig Ringer <craig(at)2ndquadrant(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, pgsql-hackers-owner(at)postgresql(dot)org
Subject: Re: Logical Replication WIP
Date: 2016-12-08 19:16:38
Message-ID: fb00b04c-d982-5a07-97f0-4c6e8de8375b@2ndquadrant.com
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On 12/6/16 11:58 AM, Peter Eisentraut wrote:
> On 12/5/16 6:24 PM, Petr Jelinek wrote:
>> I think that the removal of changes to ReplicationSlotAcquire() that you
>> did will result in making it impossible to reacquire temporary slot once
>> you switched to different one in the session as the if (active_pid != 0)
>> will always be true for temp slot.
>
> I see. I suppose it's difficult to get a test case for this.

I created a test case, saw the error of my ways, and added your code
back in. Patch attached.

--
Peter Eisentraut http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

Attachment Content-Type Size
0001-Add-support-for-temporary-replication-slots.patch text/x-patch 30.0 KB

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