session_replication_role meaning?

From: Luca Ferrari <fluca1978(at)gmail(dot)com>
To: pgsql-general <pgsql-general(at)postgresql(dot)org>
Subject: session_replication_role meaning?
Date: 2018-01-30 07:48:22
Message-ID: CAKoxK+7qePHxaFxY3FUxNiTL98tR-LShmPQOoryr7RrH=LFx6A@mail.gmail.com
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Hi all,
now this should be trivial, but I cannot udnerstand what is the
purpose of session_replication_role
<https://www.postgresql.org/docs/10/static/runtime-config-client.html#GUC-SESSION-REPLICATION-ROLE>
or better, when I should use it in a way different from 'origin'.
I've a logical replication setup and both master and client
connections default to 'origin', so it has to be specified manually.
What is its meaning?

Thanks,
Luca

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