Horton

Don't allow to set replication slot_name as ''.

Amit Kapila <akapila@postgresql.org>

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Commit: bfa2a926daf812bbda2038aec073344693954f16
Author: Amit Kapila <akapila@postgresql.org>
Date: 2021-07-19T05:34:21Z
Releases: 13.4 
Don't allow to set replication slot_name as ''.

We don't allow to create replication slot_name as an empty string ('') via
SQL API pg_create_logical_replication_slot() but it is allowed to be set
via Alter Subscription command. This will lead to apply worker repeatedly
keep trying to stream data via slot_name '' and the user is not allowed to
create the slot with that name.

Author: Japin Li
Reviewed-By: Ranier Vilela, Amit Kapila
Backpatch-through: 10, where it was introduced
Discussion: https://postgr.es/m/MEYP282MB1669CBD98E721C77CA696499B61A9@MEYP282MB1669.AUSP282.PROD.OUTLOOK.COM

Files

PathChange+/−
src/backend/commands/subscriptioncmds.c modified +3 −0
src/test/regress/expected/subscription.out modified +3 −0
src/test/regress/sql/subscription.sql modified +3 −0

Discussion