Re: [HACKERS] logical replication and PANIC during shutdowncheckpoint in publisher - Mailing list pgsql-hackers

On Fri, Jun 2, 2017 at 7:05 AM, Andres Freund <andres@anarazel.de> wrote:
> I'm a unhappy how this is reusing SIGINT for WalSndLastCycleHandler.
> Normally INT is used cancel interrupts, and since walsender is now also
> working as a normal backend, this overlap is bad.  Even for plain
> walsender backend this seems bad, because now non-superusers replication
> users will terminate replication connections when they do
> pg_cancel_backend().  For replication=dbname users it's especially bad
> because there can be completely legitimate uses of pg_cancel_backend().

Signals for WAL senders are set in WalSndSignals() which uses SIG_IGN
for SIGINT now in ~9.6, and StatementCancelHandler does not get set up
for a non-am_walsender backend. Am I missing something?
-- 
Michael