Hi, I found a bug which always prevents SignalSomeChildren with BACKEND_TYPE_WALSND from sending a signal to walsender.
Though currently SignalSomeChildren with BACKEND_TYPE_WALSND has not been called anywhere, it's not hard to believe that will be called in the future. So we should apply the following change. ---------------------- diff --git a/src/backend/postmaster/postmaster.c b/src/backend/postmaster/postmaster.c index 6f934ee..2d86fb6 100644 --- a/src/backend/postmaster/postmaster.c +++ b/src/backend/postmaster/postmaster.c @@ -3162,7 +3162,8 @@ SignalSomeChildren(int signal, int target) if (bp->dead_end) continue; - if (!(target & BACKEND_TYPE_NORMAL) && !bp->is_autovacuum) + if (!(target & BACKEND_TYPE_NORMAL) && !bp->is_autovacuum && + !IsPostmasterChildWalSender(bp->child_slot)) continue; if (!(target & BACKEND_TYPE_AUTOVAC) && bp->is_autovacuum) continue; ---------------------- Regards, -- Fujii Masao NIPPON TELEGRAPH AND TELEPHONE CORPORATION NTT Open Source Software Center -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers