Re: Sync replication waits for only 1 slave

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От Simon Riggs
Тема Re: Sync replication waits for only 1 slave
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Msg-id BANLkTik7KtHWYgJkhnn7kh0dmahKec6Ytg@mail.gmail.com
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Ответ на Sync replication waits for only 1 slave  (A J <s5aly@yahoo.com>)
Список pgsql-admin
On Tue, Jun 7, 2011 at 10:33 PM, A J <s5aly@yahoo.com> wrote:

> Having a master and 2 slaves in synchronous replication mode in 9.1
> The master seems to wait for only one slave to respond before considering
> the transaction to be complete. I have done the setting for master to wait
> for all the slaves to finish:
> synchronous_standby_names = '*'
> I even tried replacing * with both the slave application_names.
> Still master just waits for a single slave. Am I doing something incorrect
> or is it a limitation ?

No, its a design decision to improve availability and performance.

You can list the second standby also, so it can take over in the event
of failure.

--
 Simon Riggs                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services

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