| Lists: | pgsql-hackers |
|---|
| From: | Josh Berkus <josh(at)agliodbs(dot)com> |
|---|---|
| To: | PostgreSQL-development <pgsql-hackers(at)postgreSQL(dot)org> |
| Subject: | Streaming-only cascading replica won't come up without writes on the master |
| Date: | 2013-02-01 01:04:26 |
| Message-ID: | 510B149A.6030906@agliodbs.com |
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| Lists: | pgsql-hackers |
Heikki,
I thought this was only a 9.3 issue, but it turns out to be
reproduceable on 9.2.2. Basically, I did:
1. master is queicent ... no writes occuring.
2. createded cascading replica (reprep1) from replica (repmaster)
3. reprep1 remains "in recovery mode" until a write occurs on master
I've been able to reproduce this several times on my laptop using
postmasters running on different ports.
--
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com
| From: | Heikki Linnakangas <hlinnakangas(at)vmware(dot)com> |
|---|---|
| To: | Josh Berkus <josh(at)agliodbs(dot)com> |
| Cc: | PostgreSQL-development <pgsql-hackers(at)postgreSQL(dot)org> |
| Subject: | Re: Streaming-only cascading replica won't come up without writes on the master |
| Date: | 2013-02-01 17:04:45 |
| Message-ID: | 510BF5AD.4000903@vmware.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Lists: | pgsql-hackers |
On 01.02.2013 02:04, Josh Berkus wrote:
> I thought this was only a 9.3 issue, but it turns out to be
> reproduceable on 9.2.2. Basically, I did:
>
> 1. master is queicent ... no writes occuring.
> 2. createded cascading replica (reprep1) from replica (repmaster)
> 3. reprep1 remains "in recovery mode" until a write occurs on master
>
> I've been able to reproduce this several times on my laptop using
> postmasters running on different ports.
Hmm, that sounds like the issue discussed here:
http://www.postgresql.org/message-id/50C7612E.5060008@vmware.com, and
fixed by this commit:
Can you check if you still see that behavior with REL9_2_STABLE?
- Heikki
| From: | Josh Berkus <josh(at)agliodbs(dot)com> |
|---|---|
| To: | Heikki Linnakangas <hlinnakangas(at)vmware(dot)com> |
| Cc: | PostgreSQL-development <pgsql-hackers(at)postgreSQL(dot)org> |
| Subject: | Re: Streaming-only cascading replica won't come up without writes on the master |
| Date: | 2013-02-04 11:00:17 |
| Message-ID: | 510F94C1.1090503@agliodbs.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Lists: | pgsql-hackers |
> Can you check if you still see that behavior with REL9_2_STABLE?
Will do.
--
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com