Fwd: [HACKERS] [streaming replication] 9.1.3 streaming replication bug ?

---------- Forwarded message ----------
From: Michael Nolan <htfoot@gmail.com>
Date: Wed, 11 Apr 2012 14:48:18 -0400
Subject: Re: [HACKERS] [GENERAL] [streaming replication] 9.1.3
streaming replication bug ?
To: Robert Haas <robertmhaas@gmail.com>

On Wed, Apr 11, 2012 at 2:14 PM, Robert Haas <robertmhaas@gmail.com> wrote:

>
>
> We've talked about teaching the master to keep track of how far back
> all of its known standbys are, and retaining WAL back to that specific
> point, rather than the shotgun approach that is wal_keep_segments.
> It's not exactly clear what the interface to that should look like,
> though.
>
>
Moreover, how does the database decide when to drop a known standby from
the queue because it has failed or the DBA notify the database that a
particular standby should no longer be included?