On Fri, Mar 11, 2016 at 10:15 PM, Andres Freund <and...@anarazel.de> wrote: > On 2016-01-28 19:09:01 +0000, Robert Haas wrote: >> Only try to push down foreign joins if the user mapping OIDs match. >> >> Previously, the foreign join pushdown infrastructure left the question >> of security entirely up to individual FDWs, but it would be easy for >> a foreign data wrapper to inadvertently open up subtle security holes >> that way. So, make it the core code's job to determine which user >> mapping OID is relevant, and don't attempt join pushdown unless it's >> the same for all relevant relations. >> >> Per a suggestion from Tom Lane. Shigeru Hanada and Ashutosh Bapat, >> reviewed by Etsuro Fujita and KaiGai Kohei, with some further >> changes by me. > > I noticed that this breaks some citus regression tests in a minor > manner. Namely previously file_fdw worked without a user mapping, now it > doesn't appear to anymore. > > This is easy enough to fix, and it's perfectly ok for us to fix this, > but I do wonder if that's not going to cause trouble for others.
Hmm, I didn't intend to change that. If that commit broke something, there's obviously a hole in our regression test coverage. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (firstname.lastname@example.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers