Re: [BUGS] Old row version in hot chain become visible after a freeze

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От Jeff Frost
Тема Re: [BUGS] Old row version in hot chain become visible after a freeze
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Msg-id 15936472-A918-4353-B4BB-B59E0B573490@pgexperts.com
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Ответ на Re: [BUGS] Old row version in hot chain become visible after a freeze  (Jeff Frost <jeff@pgexperts.com>)
Ответы Re: [BUGS] Old row version in hot chain become visible after a freeze  (Alvaro Herrera <alvherre@alvh.no-ip.org>)
Список pgsql-bugs
> On Sep 6, 2017, at 8:23 PM, Jeff Frost <jeff@pgexperts.com> wrote:
> 
> 
> Any idea on how to identify affected rows on a running system?

I guess better questions would be:

Is it as simple as:

SELECT id, count(*) FROM foo GROUP BY id HAVING count(*) > 1;

Maybe also need to:

set enable_indexscan = 0;
set enable_indexonlyscan = 0;

before running the SELECT?

Is it possible to affect a DELETE or does it need to be a HOT updated row?


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