Re: BUG #7710: Xid epoch is not updated properly during checkpoint

On 2012-12-02 00:10:22 +0100, Andres Freund wrote:
> On 2012-12-01 17:56:33 -0500, Tom Lane wrote:
> > So barring objections, I'm going to remove LogStandbySnapshot's behavior
> > of returning the updated nextXid.
>
> I don't see any reason why it would be bad to remove this. I think the
> current behaviour could actually even delay getting to an active state
> slightly in the presence of prepared transactions because its used to
> create to initialize the KnownAssignedXid machinery in xlog_redo. If the
> prepared xacts are suboverflown its a *good* thing to have an old
> ->nextXid.

That doesn't hold true btw, due to the fact LogStandbySnapshot isn't
called in the shutdown case.

Greetings,

Andres Freund

--
 Andres Freund                       http://www.2ndQuadrant.com/
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