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help / color / mirror / Atom feedFrom: Álvaro Herrera <[email protected]>
To: [email protected]
Subject: pgsql: Allow old WAL recycling during REPACK CONCURRENTLY
Date: Fri, 29 May 2026 22:23:55 +0000
Message-ID: <[email protected]> (raw)
Allow old WAL recycling during REPACK CONCURRENTLY
During REPACK CONCURRENTLY, logical decoding keeps replication
slot.restart_lsn pinned behind the oldest running transaction, which is
often the long-lived REPACK transaction itself. As a result, old WAL
segments are retained longer than necessary.
This commit advances the replication slot each time WAL insertion
crosses a segment boundary, so obsolete WAL files can be recycled while
REPACK is still running.
Author: Zhijie Hou <[email protected]>
Reviewed-by: Antonin Houska <[email protected]>
Reviewed-by: Amit Kapila <[email protected]>
Discussion: https://postgr.es/m/TY4PR01MB17718B44164522D0798F8E898940A2@TY4PR01MB17718.jpnprd01.prod.outlook.com
Branch
------
master
Details
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https://git.postgresql.org/pg/commitdiff/45b02984e2fa9ee7bd83f7e58797b160baf0cc13
Modified Files
--------------
src/backend/commands/repack_worker.c | 20 ++++++++++++++++++--
1 file changed, 18 insertions(+), 2 deletions(-)
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