Missing docs for SR

From: Josh Berkus <josh(at)agliodbs(dot)com>
To: PostgreSQL-development <pgsql-hackers(at)postgreSQL(dot)org>
Subject: Missing docs for SR
Date: 2010-01-19 22:30:52
Message-ID: 4B56329C.3090109@agliodbs.com
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So, here's a must-fix item for SR for release: we need adequate docs.
I'm happy to write these but *I* need to understand the answers first.

The current docs and wiki page do not explain:

* How (technically) the slave listens for LSNs
* Does the walreceiver need the archive (via archive_command) copies of
the WAL files after it's caught up with the master?
** If not, then what are we supposed to do with them? Write a cron job
to delete them every minute?
** If so, can we somehow use pg_standby with SR?

I've tried to dig this information out of the wiki and mailing list
archives and can't quite figure it out. Is there a tech doc which was
not posted anywhere public, or do I need to just RTFC?

Also, given that recovery.conf has become a key part of our replication,
shouldn't we supply a recovery.example file which people can rename and
edit? Happy to write this too.

--Josh Berkus


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