fd09c1316b
Previously, invalidated logical and physical replication slots could be copied using the pg_copy_logical_replication_slot and pg_copy_physical_replication_slot functions. Replication slots that were invalidated for reasons other than WAL removal retained their restart_lsn. This meant that a new slot copied from an invalidated slot could have a restart_lsn pointing to a WAL segment that might have already been removed. This commit restricts the copying of invalidated replication slots. Backpatch to v16, where slots could retain their restart_lsn when invalidated for reasons other than WAL removal. For v15 and earlier, this check is not required since slots can only be invalidated due to WAL removal, and existing checks already handle this issue. Author: Shlok Kyal <shlok.kyal.oss@gmail.com> Reviewed-by: vignesh C <vignesh21@gmail.com> Reviewed-by: Zhijie Hou <houzj.fnst@fujitsu.com> Reviewed-by: Peter Smith <smithpb2250@gmail.com> Reviewed-by: Masahiko Sawada <sawada.mshk@gmail.com> Reviewed-by: Amit Kapila <amit.kapila16@gmail.com> Discussion: https://postgr.es/m/CANhcyEU65aH0VYnLiu%3DOhNNxhnhNhwcXBeT-jvRe1OiJTo_Ayg%40mail.gmail.com Backpatch-through: 16 |
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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/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/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/.