Re: [bug fix] pg_ctl always uses the same event source

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От Robert Haas
Тема Re: [bug fix] pg_ctl always uses the same event source
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Msg-id CA+TgmoZCiZMNbFjuNNQER9zYmXXf11scBekVxkiuN0-nFU_cow@mail.gmail.com
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Ответ на Re: [bug fix] pg_ctl always uses the same event source  (Amit Kapila <amit.kapila16@gmail.com>)
Ответы Re: [bug fix] pg_ctl always uses the same event source  (Amit Kapila <amit.kapila16@gmail.com>)
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On Tue, Jan 21, 2014 at 11:20 PM, Amit Kapila <amit.kapila16@gmail.com> wrote:
> On Wed, Jan 22, 2014 at 9:19 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> Amit Kapila <amit.kapila16@gmail.com> writes:
>>> On Tue, Jan 21, 2014 at 6:57 PM, MauMau <maumau307@gmail.com> wrote:
>>>> To follow this, we have the line as:
>>>>
>>>> #event_source = 'PostgreSQL 9.4'
>>>>
>>>> But this requires us to change this line for each major release.  That's a
>>>> maintenance headache.
>>
>>> What I had in mind was to change it during initdb, we are already doing it
>>> for some other parameter (unix_socket_directories),
>>
>> What happens when somebody copies their postgresql.conf from an older
>> version?  That's hardly uncommon, even though it might be considered bad
>> practice.  I don't think it's a good idea to try to insert a version
>> identifier this way.
>>
>> But ... what's the point of including the PG version in this string
>> anyhow?  If you're trying to make the string unique across different
>> installations on the same machine, it's surely insufficient, and if
>> that's not the point then what is?
>
> Well, certainly it cannot handle all different scenario's (particularly
> same version installations), but the original report for this case was
> for different versions of server. I think chances of having different
> versions of server are much more, which will be handled by this
> case.

I wonder if the port number wouldn't be a better choice.  And that
could even be done without adding a parameter.

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company



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