On 2015/12/04 11:51, Noah Misch wrote:
On Tue, Dec 01, 2015 at 11:05:47AM -0500, Robert Haas wrote:
On Mon, Nov 30, 2015 at 2:43 PM, Tom Lane <t...@sss.pgh.pa.us> wrote:
* Foreign join pushdown vs EvalPlanQual

Is this fixed by 5fc4c26db?  If not, what remains to do?

Unfortunately, no.  That commit allows FDWs to do proper EPQ handling
for plain table scans, but it proves to be inadequate for EPQ handling
for joins. Solving that problem will require another patch, and,
modulo a bunch of cosmetic issues, I'm reasonably happy with KaiGai
Kohei's latest submission.  I'll respond in more detail on that
thread, but the question I want to raise here is: do we want to
back-patch those changes to 9.5 at this late date?

Yes.  If 9.5 added a bad interface, better to fix the interface even now than
to live with the bad one.

I'd vote for fixing this.

I think the latest version of the patch for this is in good shape, but that would need some changes as proposed on that thread. So, if there are no objections, I'll update the patch.

Best regards,
Etsuro Fujita

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