Re: pg_upgrade and epoch

From: Sergey Konoplev <gray(dot)ru(at)gmail(dot)com>
To: Bruce Momjian <bruce(at)momjian(dot)us>
Cc: Sergey Burladyan <eshkinkot(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: pg_upgrade and epoch
Date: 2014-09-03 05:38:55
Message-ID: CAL_0b1s-549Mf0nSwkD+tZU--LUWOn4G5wfC5qLRx-1XGXZ7Rw@mail.gmail.com
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On Tue, Sep 2, 2014 at 7:59 PM, Bruce Momjian <bruce(at)momjian(dot)us> wrote:
> On Wed, Apr 23, 2014 at 12:41:41PM -0700, Sergey Konoplev wrote:
>> On Wed, Apr 23, 2014 at 5:26 AM, Bruce Momjian <bruce(at)momjian(dot)us> wrote:
>> > Sergey, are you seeing a problem only because you are
>> > interacting with other systems that didn't reset their epoch?
>>
>> I faced this after upgrading clusters with PgQ Skytools3 installed
>> only. They didn't interact with any other systems.
>
> I have developed the attached patch which causes pg_upgrade to preserve
> the transaction epoch. I plan to apply this for PG 9.5.

That is a great news. Thank you, Bruce.

--
Kind regards,
Sergey Konoplev
PostgreSQL Consultant and DBA

http://www.linkedin.com/in/grayhemp
+1 (415) 867-9984, +7 (499) 346-7196, +7 (988) 888-1979
gray(dot)ru(at)gmail(dot)com

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