[Pgpool-general] Is pgpool_walrecrunning needed in Master/Slave mode?

[Lazaro Rubén García Martinez]

'replication_mode = true' means sincronous replication with pgpool-II, pgpool_walrecrunning function is used for streaming replication, configuring pgpool-II in master/slave sub-mode stream.

Regards.

De: pgpool-general-bounces at pgfoundry.org [mailto:pgpool-general-bounces at pgfoundry.org] En nombre de Sandeep Thakkar
Enviado el: lunes, 19 de septiembre de 2011 01:32
Para: Tatsuo Ishii
CC: pgpool-general at pgfoundry.org
Asunto: Re: [Pgpool-general] Is pgpool_walrecrunning needed in Master/Slave mode?

Thanks Tatsuo.

By streaming replication mode, you mean the 'replication_mode = true' in pgpool.conf? If I use pgpool-II-3.0.3, and configure it in Master/Slave mode with sub mode as 'stream', then I do not need this function., right?

Sandeep.
________________________________
From: Tatsuo Ishii <ishii at sraoss.co.jp>
To: sandeeptt at yahoo.com
Cc: pgpool-general at pgfoundry.org
Sent: Saturday, September 17, 2011 1:40 PM
Subject: Re: [Pgpool-general] Is pgpool_walrecrunning needed in Master/Slave mode?

> I read the 3.0.3 docs and found that pgpool_walrecrunning() should be used only in replication mode, and that too when somebody is using the failure/online recovery feature of pgPoll-II.

pgpool_walrecrunning is only usefull for streaming replication
mode in 3.0.x.

> At the same time, I found that this function has undergone some change:
> "
>
> Now "pgpool_walrecrunning()" was not used. pgpool-II used to consider the node that is promoted a primary node using the function. Now, pgpool-II waits for completing of the promotion to primary node because it did not work as we intended. But we still have a problem that pgpool-II waits while recovery_timeout, when there is no primary node(Kitagawa)
>  "
>
> Can someone elaborate this please? Also, I assume that I need this function only when I setup pgPool-II in replication mode.

In pgpool-II 3.1 the function is not used anymore even in streaming
replication mode.
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese: http://www.sraoss.co.jp

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://pgfoundry.org/pipermail/pgpool-general/attachments/20110919/8a552824/attachment.html>