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Doc: Warn about two_phase when altering a subscription's slot name. 

We expect the 'two_phase' and 'failover' properties to match between the
slot on the publisher and a subscription option on the subscriber.
Otherwise, the slot on the publisher may behave differently from what the
subscription's failover option says.

Author: Bertrand Drouvot
Reviewed-by: Peter Smith, Tristen Raab, Amit Kapila
Discussion: https://postgr.es/m/ZbkYrLPhH+RxpZlW@ip-10-97-1-34.eu-west-3.compute.internal
This commit is contained in:
Amit Kapila 2024-03-11 09:33:04 +05:30
parent b36fbd9f8d
commit 21e3a8bc35
1 changed files with 8 additions and 8 deletions
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16
doc/src/sgml/ref/alter_subscription.sgml
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@ -235,15 +235,15 @@ ALTER SUBSCRIPTION <replaceable class="parameter">name</replaceable> RENAME TO <
<para>
When altering the
<link linkend="sql-createsubscription-params-with-slot-name"><literal>slot_name</literal></link>,
the <literal>failover</literal> property value of the named slot may differ from the
the <literal>failover</literal> and <literal>two_phase</literal> property
values of the named slot may differ from the counterpart
<link linkend="sql-createsubscription-params-with-failover"><literal>failover</literal></link>
parameter specified in the subscription. When creating the slot,
ensure the slot <literal>failover</literal> property matches the
<link linkend="sql-createsubscription-params-with-failover"><literal>failover</literal></link>
parameter value of the subscription. Otherwise, the slot on the
publisher may behave differently from what subscription's
<link linkend="sql-createsubscription-params-with-failover"><literal>failover</literal></link>
option says. The slot on the publisher could either be
and <link linkend="sql-createsubscription-params-with-two-phase"><literal>two_phase</literal></link>
parameters specified in the subscription. When creating the slot, ensure
the slot properties <literal>failover</literal> and <literal>two_phase</literal>
match their counterpart parameters of the subscription.
Otherwise, the slot on the publisher may behave differently from what these
subscription options say: for example, the slot on the publisher could either be
synced to the standbys even when the subscription's
<link linkend="sql-createsubscription-params-with-failover"><literal>failover</literal></link>
option is disabled or could be disabled for sync