postgres.git / summary / log / commit / refs

commit    90558dbf54830aa632ff880f65c7eb13f0ca7ec6
Author:   Fujii Masao <fujii@postgresql.org>
Date:     Mon May 26 03:47:33 2025 +0000

    doc: Fix documenation for snapshot export in logical decoding.
    
    The documentation for exported snapshots in logical decoding previously
    stated that snapshot creation may fail on a hot standby. This is no longer
    accurate, as snapshot exporting on standbys has been supported since
    PostgreSQL 10. This commit removes the outdated description.
    
    Additionally, the docs referred to the NOEXPORT_SNAPSHOT option to
    suppress snapshot exporting in CREATE_REPLICATION_SLOT. However,
    since PostgreSQL 15, NOEXPORT_SNAPSHOT is considered legacy syntax
    and retained only for backward compatibility. This commit updates
    the documentation for v15 and later to use the modern equivalent:
    SNAPSHOT 'nothing'. The older syntax is preserved in documentation for
    v14 and earlier.
    
    Back-patched to all supported branches.
    
    Reported-by: Kevin K Biju <kevinkbiju@gmail.com>
    Author: Fujii Masao <masao.fujii@gmail.com>
    Reviewed-by: Kevin K Biju <kevinkbiju@gmail.com>
    Discussion: https://postgr.es/m/174791480466.798.17122832105389395178@wrigleys.postgresql.org
    Backpatch-through: 13


 doc/src/sgml/logicaldecoding.sgml | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/doc/src/sgml/logicaldecoding.sgml b/doc/src/sgml/logicaldecoding.sgml
index 1c4ae38f1b9..0b4f1fffb6a 100644
--- a/doc/src/sgml/logicaldecoding.sgml
+++ b/doc/src/sgml/logicaldecoding.sgml
@@ -455,9 +455,8 @@ postgres=# select * from pg_logical_slot_get_changes('regression_slot', NULL, NU
      using the slot's contents without losing any changes.
     </para>
     <para>
-     Creation of a snapshot is not always possible.  In particular, it will
-     fail when connected to a hot standby.  Applications that do not require
-     snapshot export may suppress it with the <literal>NOEXPORT_SNAPSHOT</literal>
+     Applications that do not require
+     snapshot export may suppress it with the <literal>SNAPSHOT 'nothing'</literal>
      option.
     </para>
    </sect2>


[parent: cd3064f9898c]