On 2014-05-14 12:15:27 -0400, Tom Lane wrote:
> Andres Freund <andres@2ndquadrant.com> writes:
> > On 2014-05-14 15:17:39 +0200, Andres Freund wrote:
> >> My gut feeling says it's in RelationGetIndexList().
>
> > Nearly right. It's in RelationGetIndexAttrBitmap(). Fix attached.
>
> TBH, I don't believe this patch at all. Where exactly is rd_replidindex
> reset? If it's supposed to have similar lifespan to, say, rd_oidindex,
> why isn't it being handled like rd_oidindex?
I don't see why it'd have a different lifespan than rd_oidindex at all?
If the latter were used inside the loop it'd be a bug as well.
> And why does the header
> comment for RelationGetIndexList make no mention of this new side-effect?
> Somebody did a seriously poor job of adding this functionality to
> relcache.
It's not like it's not documented: There's a comment about it in struct
RelationData. I must have missed that rd_oidindex has a comment abou
it's lifetime over RelationGetIndexList().
I personally actually prefer the struct as the location for the
lifetime. I can send a patch to commonalize the location in either place
with the other location pointing to it.
Greetings,
Andres Freund
-- Andres Freund http://www.2ndQuadrant.com/PostgreSQL Development, 24x7 Support, Training &
Services