add_caution.diffs
application/octet-stream
Filename: add_caution.diffs
Type: application/octet-stream
Part: 0
diff --git a/doc/src/sgml/ref/alter_publication.sgml b/doc/src/sgml/ref/alter_publication.sgml
index 44ae7e0e87..dedf30ec12 100644
--- a/doc/src/sgml/ref/alter_publication.sgml
+++ b/doc/src/sgml/ref/alter_publication.sgml
@@ -154,6 +154,22 @@ ALTER PUBLICATION <replaceable class="parameter">name</replaceable> RENAME TO <r
This clause alters publication parameters originally set by
<xref linkend="sql-createpublication"/>. See there for more information.
</para>
+ <caution>
+ <para>
+ When the partition root table is explicitly specified as the replication
+ target instead of its leaf, altering the
+ <literal>publish_via_partition_root</literal> during the replication can
+ lead to data loss or duplication. This is because the publisher
+ replicates changes as the partitioned table after the altering, but it
+ is not listed in
+ <link linkend="catalog-pg-subscription-rel"><literal>pg_subscription_rel</literal></link>.
+ </para>
+ <para>
+ To prevent the issue, you can avoid modifying the partitioned root table
+ between the <command>ALTER PUBLICATION ... SET</command> and
+ <link linkend="sql-altersubscription"><command>ALTER SUBSCRIPTION ... REFRESH PUBLICATION</command></link>.
+ </para>
+ </caution>
</listitem>
</varlistentry>