On Wed, Mar 23, 2016 at 10:05 PM, Thom Brown <t...@linux.com> wrote:
> I've noticed that you now can't cancel a query if there's DML pushdown
> to a foreign server.  This previously worked while it was sending
> individual statements as it interrupted and rolled it back.
> Here's what the local server sees when trying to cancel:
> # DELETE FROM remote.contacts;
> ^CCancel request sent
> DELETE 5000000
> This should probably be fixed.

Looking at what has been committed, execute_dml_stmt is using
PQexecParams, so we'd want to use an asynchronous call and loop on
PQgetResult with CHECK_FOR_INTERRUPTS() in it.

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