Crash recovery running with wal_level='minimal' can replay an
XLOG_LOGICAL_DECODING_STATUS_CHANGE record that activates logical
decoding, if the server previously ran with a higher wal_level and
crashed after the last logical slot was dropped but before the
checkpointer deactivated logical decoding. Replaying such a record is
correct since it reflects the status at the time it was
written. However, UpdateLogicalDecodingStatusEndOfRecovery() asserted
that logical decoding is never active with wal_level='minimal',
causing an assertion failure at the end of recovery. In production
builds, logical decoding would remain active while running with
wal_level='minimal'.
Instead of special-casing wal_level='minimal', recompute the status at
the end of recovery as usual: no logical slot can exist with
wal_level='minimal' as RestoreSlotFromDisk() would have rejected it,
so the recomputation always deactivates logical decoding in this case,
also writing the corresponding status change record.
Oversight in 67c20979ce.
Reviewed-by: Guoqing Yang <yanggq1988@126.com>
Reviewed-by: Hayato Kuroda <kuroda.hayato@fujitsu.com>
Discussion: https://postgr.es/m/CAD21AoAnPAugUnDic+ESvrfXjXHk2bss9eHAD7zP0-Chy2UabA@mail.gmail.com
Backpatch-through: 19
PostgreSQL Database Management System
This directory contains the source code distribution of the PostgreSQL database management system.
PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/19/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/19/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.