Re: 9.2 Cascading replication after slave promotion

From: Mark Kirkwood <mark(dot)kirkwood(at)catalyst(dot)net(dot)nz>
To: Josh Berkus <josh(at)agliodbs(dot)com>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: 9.2 Cascading replication after slave promotion
Date: 2012-08-14 00:54:50
Message-ID: 5029A1DA.9000906@catalyst.net.nz
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On 14/08/12 12:32, Josh Berkus wrote:
> Mark,
>
>> Looking at the docs (section 25.2.6 paragraph 6) leads one to believe
>> that downstream standbys can continue to receive and process wal merely
>> by reconnecting after the cascading standby is promoted - but this does
>> not seem to be the case (indeed the same paragraph notes that timelines
>> now no longer match). It looks to me like the downstream guys all need
>> to be rebuilt - or am I missing something?
> Per discussion on this list (search for "remastering"), 9.2 still won't
> allow standbies to point to a new master unless you are doing file-based
> replication.
>
> To date, I seem to be the only one convinced that this is an actual
> deficiency ...
>
>

Make that 2 of us...

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