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doc: Document reopen of output file via SIGHUP in pg_recvlogical.

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When pg_recvlogical receives a SIGHUP signal, it closes the current
output file and reopens a new one. This is useful since it allows us to
rotate the output file by renaming the current file and sending a SIGHUP.

This behavior was previously undocumented. This commit adds
the missing documentation.

Back-patch to all supported versions.

Author: Fujii Masao <masao.fujii@gmail.com>
Reviewed-by: Shinya Kato <shinya11.kato@gmail.com>
Discussion: https://postgr.es/m/0977fc4f-1523-4ecd-8a0e-391af4976367@oss.nttdata.com
Backpatch-through: 13
This commit is contained in:
Fujii Masao
2025-07-20 11:58:31 +09:00
parent aadf7db66e
commit cb937e48f0
1 changed files with 10 additions and 0 deletions
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10
doc/src/sgml/ref/pg_recvlogical.sgml
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@ -53,6 +53,16 @@ PostgreSQL documentation
(<keycombo action="simul"><keycap>Control</keycap><keycap>C</keycap></keycombo>)
or <systemitem>SIGTERM</systemitem> signal.
</para>
<para>
When <application>pg_recvlogical</application> receives
a <systemitem>SIGHUP</systemitem> signal, it closes the current output file
and opens a new one using the filename specified by
the <option>--file</option> option. This allows us to rotate
the output file by first renaming the current file and then sending
a <systemitem>SIGHUP</systemitem> signal to
<application>pg_recvlogical</application>.
</para>
</refsect1>
<refsect1>