Re: Re: [COMMITTERS] pgsql: Make CheckRequiredParameterValues() depend upon correct

Fujii Masao wrote:
> On Thu, Apr 29, 2010 at 1:14 AM, Heikki Linnakangas
> <heikki(dot)linnakangas(at)enterprisedb(dot)com> wrote:
>> Ok, I've finally committed the patch, using wal_level as the name of the
>> GUC.
>
>> ! if (InArchiveRecovery && XLogRequestRecoveryConnections)
>> ! {
>> ! if (ControlFile->wal_level < WAL_LEVEL_HOT_STANDBY)
>> ! ereport(ERROR,
>> ! (errmsg("recovery connections cannot start because wal_level was not set to 'hot_standby' on the WAL source server")));
>
> I still have the complaint against the above check. Since the default value
> of recovery_connections is TRUE, the users who need only archiving not
> replication (i.e., wal_level is set to 'archive') are likely to often
> see the failure
> of the archive recovery by the above check.

Should we change the default to recovery_connections=off ? It is a quite
big change in default behavior over previous releases that hot standby
is enabled by default, so maybe that would be the right thing to do anyway.

Or maybe add a hint to the above, "disable hot standby by setting
recovery_connections=off, or set wal_level='hot_standby' in the primary"

--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com