On 21 April 2017 at 10:20, Petr Jelinek <petr.jeli...@2ndquadrant.com> wrote: > On 21/04/17 03:40, Andres Freund wrote: >> >> Since  walsender (not receiver as commit message says) can execute >> SQL queries. While doing some testing of  I noticed that SQL queries >> in walsender get stuck if parallelism is used - I have not investigated >> why that is yet, but it surely is an issue. On first blush I'd suspect >> that some signalling is not wired up correctly (cf. am_walsender branches >> in PostgresMain() and such). > > Looks like SIGUSR1 being different is problem here - it's normally used > to . I also noticed that we don't handle SIGINT (query cancel). > > I'll write proper patch but can you try to just use > procsignal_sigusr1_handler for SIGUSR1 in walsender.c to see if it fixes > the issue?
That's what my recovery conflicts for logical decoding on standby patch does, FWIW. I haven't found any issues yet.. -- Craig Ringer http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-hackers mailing list (firstname.lastname@example.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers