On Tue, Oct 6, 2015 at 5:32 AM, Andres Freund <and...@anarazel.de> wrote:

> The problem is basically that cache invalidations can arrive while
> you're building new cache entries. Everytime you e.g. open a relation
> cache invalidations can arrive. Assume you'd written the code like:

> You're avoiding that by only entering into the hashtable *after* the
> lookup. And I think that deserves a comment.

Thanks, revised patch attached.


Attachment: 20151006_postgres_fdw_extensions.patch
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