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Rework documentation of pg_promote

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This clarifies the behavior of how the "wait" flag works, which is
something that the previous version of the documentation failed to do.

Author: Ian Barwick
Discussion: https://postgr.es/m/cbd38450-2295-10a1-1f73-591a692ae0b0@2ndquadrant.com
This commit is contained in:
Michael Paquier
2018-11-19 13:20:22 +09:00
parent 285bd0ac4a
commit 74171f8c12
1 changed files with 10 additions and 8 deletions
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18
doc/src/sgml/func.sgml
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@@ -19278,14 +19278,16 @@ postgres=# SELECT * FROM pg_walfile_name_offset(pg_stop_backup());
</entry> </entry>
<entry><type>boolean</type></entry> <entry><type>boolean</type></entry>
<entry> <entry>
Promotes a physical standby server. Returns <literal>true</literal> Promotes a physical standby server. With <parameter>wait</parameter>
if promotion is successful and <literal>false</literal> otherwise. set to <literal>true</literal> (the default), the function waits until
With <parameter>wait</parameter> set to <literal>true</literal>, the promotion is completed or <parameter>wait_seconds</parameter> seconds
default, the function waits until promotion is completed or have passed, and returns <literal>true</literal> if promotion is
<parameter>wait_seconds</parameter> seconds have passed, otherwise the successful and <literal>false</literal> otherwise.
function returns immediately after sending the promotion signal to the If <parameter>wait</parameter> is set to <literal>false</literal>, the
postmaster. This function is restricted to superusers by default, but function returns <literal>true</literal> immediately after sending
other users can be granted EXECUTE to run the function. <literal>SIGUSR1</literal> to the postmaster to trigger the promotion.
This function is restricted to superusers by default, but other users
can be granted EXECUTE to run the function.
</entry> </entry>
</row> </row>
<row> <row>