Re: preserving forensic information when we freeze
От | Alvaro Herrera |
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Тема | Re: preserving forensic information when we freeze |
Дата | |
Msg-id | 20131220022202.GO11006@eldon.alvh.no-ip.org обсуждение исходный текст |
Ответ на | Re: preserving forensic information when we freeze (Jim Nasby <jim@nasby.net>) |
Ответы |
Re: preserving forensic information when we freeze
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Список | pgsql-hackers |
Jim Nasby escribió: > One thing users will lose in this patch is the ability to reliably see if a tuple is frozen via SQL. Today you can do thatjust by selecting xmin from the table. > > Obviously people don't generally need to do that... but it's one of those things that when you do need it it's incrediblyhandy to have... would it be difficult to expose infomask(2) via SQL, the same way xmin et all are? It's already exposed via the pageinspect extension. It's doubtful that there are many valid cases where you need infomask but don't have access to that module. The real fix seems to ensure that the module is always available. -- Álvaro Herrera http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services
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