Re: How to avoid base backup in automated failover

From: chinnaobi <chinnaobi(at)gmail(dot)com>
To: pgsql-hackers(at)postgresql(dot)org
Subject: Re: How to avoid base backup in automated failover
Date: 2012-10-17 05:51:07
Message-ID: 1350453066873-5728517.post@n5.nabble.com
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Hey Haas,What does the standby server have to wait for replication to catch
up before promoting ?? Is there any parameter to configure this ??Few more
questions on this part 1. How could we ensure the standby has received all
transactions sent by primary till the point primary server is dead. (Meaning
the dead primary and standby server are exactly same, so that the dead
primary comes back it can be turned to standby without any issues).2. When
the dead primary is turned to standby the streaming is not happening due to
current_wal_location is ahead in the standby server is ahead of
wal_sent_location. In this case how can I start streaming without taking a
fresh base backup ??3. When the dead primary comes back the DB still accepts
data and it goes to out of sync with the current primary and streaming won't
start. Is there any solution for this case ??Reddy.

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