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Clean-ups for 776621a5e4 and 7329240437.

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Following are a few clean-ups related to failover option support in slots:
1. Improve the documentation in create_subscription.sgml.
2. Remove the spurious blank line in subscriptioncmds.c.
3. Remove the NOTICE for alter_replication_slot in subscriptioncmds.c as
we would sometimes print it even when nothing has changed. One can find
the change by enabling log_replication_commands on the publisher.
4. Optimize ReplicationSlotAlter() function to prevent disk flushing when
the slot's data remains unchanged.

Author: Hou Zhijie
Reviewed-by: Amit Kapila
Discussion: https://postgr.es/m/514f6f2f-6833-4539-39f1-96cd1e011f23@enterprisedb.com
Discussion: https://postgr.es/m/OS0PR01MB57164904651FB588A518E98894472@OS0PR01MB5716.jpnprd01.prod.outlook.com
This commit is contained in:
Amit Kapila
2024-02-07 10:04:04 +05:30
parent b9d6038d70
commit 22f7e61a63
4 changed files with 12 additions and 19 deletions
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5
doc/src/sgml/ref/create_subscription.sgml
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@@ -117,9 +117,8 @@ CREATE SUBSCRIPTION <replaceable class="parameter">subscription_name</replaceabl
command should connect to the publisher at all. The default
is <literal>true</literal>. Setting this to
<literal>false</literal> will force the values of
<literal>create_slot</literal>, <literal>enabled</literal>,
<literal>copy_data</literal>, and <literal>failover</literal>
to <literal>false</literal>.
<literal>create_slot</literal>, <literal>enabled</literal> and
<literal>copy_data</literal> to <literal>false</literal>.
(You cannot combine setting <literal>connect</literal>
to <literal>false</literal> with
setting <literal>create_slot</literal>, <literal>enabled</literal>,