Re: SSI freezing bug
| От | Kevin Grittner |
|---|---|
| Тема | Re: SSI freezing bug |
| Дата | |
| Msg-id | 1381155368.4756.YahooMailNeo@web162906.mail.bf1.yahoo.com обсуждение исходный текст |
| Ответ на | Re: SSI freezing bug (Heikki Linnakangas <hlinnakangas@vmware.com>) |
| Список | pgsql-hackers |
Heikki Linnakangas <hlinnakangas@vmware.com> wrote: > Well, it's fairly harsh if the feature isn't working as > advertised. Right -- there are people counting on serializable transaction to avoid data corruption (creation of data which violates the business rules which they believe are being enforced). A tuple freeze at the wrong moment could currently break that. The patch allows the guarantee to hold. The fact that this bug is only seen if there is a very-long-running transaction or if VACUUM FREEZE is run while data-modifying transactions are active does not eliminate the fact that without this patch data can be corrupted. -- Kevin Grittner EDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company
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