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Re: Cascading replication and recovery_target_timeline='latest'

Dimitri Fontaine <dimitri@2ndquadrant.fr>

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From: Dimitri Fontaine <dimitri@2ndQuadrant.fr>
To: hlinnaka@iki.fi
Cc: Fujii Masao <masao.fujii@gmail.com>, Simon Riggs <simon@2ndquadrant.com>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2012-09-04T10:02:55Z
Lists: pgsql-hackers 
Heikki Linnakangas <hlinnaka@iki.fi> writes:
> Hmm, I was thinking that when walsender gets the position it can send the
> WAL up to, in GetStandbyFlushRecPtr(), it could atomically check the current
> recovery timeline. If it has changed, refuse to send the new WAL and
> terminate. That would be a fairly small change, it would just close the
> window between requesting walsenders to terminate and them actually
> terminating.

It looks to me like a bug fix that also applies to non cascading
situation. Is that right?

Regards,
-- 
Dimitri Fontaine
http://2ndQuadrant.fr     PostgreSQL : Expertise, Formation et Support