git.postgresql.org Git - postgresql.git/commitdiff

git projects / postgresql.git / commitdiff

Wake up launcher when enabling a subscription

author Peter Eisentraut <peter_e@gmx.net>

2017年4月25日 18:40:33 +0000 (14:40 -0400)

committer Peter Eisentraut <peter_e@gmx.net>

2017年4月25日 18:40:33 +0000 (14:40 -0400)

Otherwise one would have to wait up to DEFAULT_NAPTIME_PER_CYCLE until
the subscription worker is considered for starting.

There is a small race condition: If one enables a subscription right
after disabling it, the launcher might not have registered the stopping
when receiving the wakeup signal for the re-enabling. The start will
then not happen right away but after the full cycle time.

Author: Kyotaro HORIGUCHI <horiguchi.kyotaro@lab.ntt.co.jp>

src/backend/commands/subscriptioncmds.c patch | blob | blame | history

diff --git a/src/backend/commands/subscriptioncmds.c b/src/backend/commands/subscriptioncmds.c

index c29a57ed52d2bb4c9bc7045b00213e23821b007c..6a404bbe1e3d18be28fad1a325e3466ae87fc45f 100644 (file)

--- a/src/backend/commands/subscriptioncmds.c

+++ b/src/backend/commands/subscriptioncmds.c

@@ -644,6 +644,9 @@ AlterSubscription(AlterSubscriptionStmt *stmt)

BoolGetDatum(enabled);

replaces[Anum_pg_subscription_subenabled - 1] = true;

+ if (enabled)

+ ApplyLauncherWakeupAtCommit();

update_tuple = true;

break;

}

This is the main PostgreSQL git repository.

RSS Atom