From: Fujii Masao <fujii@postgresql.org>
To: pgsql-committers@lists.postgresql.org
Subject: pgsql: Change unit of idle_replication_slot_timeout to seconds.
Date: Thu, 10 Jul 2025 23:43:49 +0000
Message-ID: <E1ua0vd-005fCs-27@gemulon.postgresql.org> (raw)
Change unit of idle_replication_slot_timeout to seconds.
Previously, the idle_replication_slot_timeout parameter used minutes
as its unit, based on the assumption that values would typically exceed
one minute in production environments. However, this caused unexpected
behavior: specifying a value below 30 seconds would round down to 0,
effectively disabling the timeout. This could be surprising to users.
To allow finer-grained control and avoid such confusion, this commit changes
the unit of idle_replication_slot_timeout to seconds. Larger values can
still be specified easily using standard time suffixes, for example,
'24h' for 24 hours.
Back-patch to v18 where idle_replication_slot_timeout was added.
Reported-by: Gunnar Morling <gunnar.morling@googlemail.com>
Author: Fujii Masao <masao.fujii@gmail.com>
Reviewed-by: Laurenz Albe <laurenz.albe@cybertec.at>
Reviewed-by: David G. Johnston <david.g.johnston@gmail.com>
Reviewed-by: Amit Kapila <amit.kapila16@gmail.com>
Reviewed-by: Hayato Kuroda <kuroda.hayato@fujitsu.com>
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/CADGJaX_0+FTguWpNSpgVWYQP_7MhoO0D8=cp4XozSQgaZ40Odw@mail.gmail.com
Backpatch-through: 18
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/05dedf43d380edc98546c381e76a9d907fd19bed
Modified Files
--------------
doc/src/sgml/config.sgml | 2 +-
src/backend/replication/slot.c | 21 +++++++++------------
src/backend/utils/misc/guc_tables.c | 6 +++---
src/backend/utils/misc/postgresql.conf.sample | 2 +-
src/include/replication/slot.h | 2 +-
5 files changed, 15 insertions(+), 18 deletions(-)
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To: pgsql-committers@postgresql.org
Cc: fujii@postgresql.org, pgsql-committers@lists.postgresql.org
Subject: Re: pgsql: Change unit of idle_replication_slot_timeout to seconds.
In-Reply-To: <E1ua0vd-005fCs-27@gemulon.postgresql.org>
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