| From: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
|---|---|
| To: | A J <s5aly(at)yahoo(dot)com> |
| Cc: | PG Admin <pgsql-admin(at)postgresql(dot)org> |
| Subject: | Re: Sync replication waits for only 1 slave |
| Date: | 2011-06-07 22:07:10 |
| Message-ID: | BANLkTik7KtHWYgJkhnn7kh0dmahKec6Ytg@mail.gmail.com |
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| Lists: | pgsql-admin |
On Tue, Jun 7, 2011 at 10:33 PM, A J <s5aly(at)yahoo(dot)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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