Re: [BUGS] Bug #613: Sequence values fall back to previously chec - Mailing list pgsql-hackers

From Tom Lane
Subject Re: [BUGS] Bug #613: Sequence values fall back to previously chec
Date
Msg-id 21303.1016208230@sss.pgh.pa.us
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List pgsql-hackers
"'Ben Grimm'" <bgrimm@zaeon.com> writes:
> On Fri, 15 Mar 2002, Tom Lane wrote:
>> What's bug #3?  I don't recall a third issue.

> The problem I was seeing before is that when the postmaster was shutdown 
> properly, log_cnt in the sequence record was saved with whatever value it 
> had at the time.

Right, it's supposed to do that.

> So when it loaded from disk it would have a value greater 
> than zero resulting in no XLogInsert until you'd exceded log_cnt calls to
> nextval.  

This is the same as the post-checkpoint issue: we fix it by forcing an
XLogInsert on the first nextval after a checkpoint (or system startup).
        regards, tom lane


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