On Mon, Dec 5, 2011 at 10:46 AM, Tom Lane wrote:
> Robert Haas writes:
>> I'm still puzzled that Tomas got it working at all. If MyDatabaseId
>> hasn't been set yet, the how did we manage to build a relcache entry
>> for anything - let alone an unshared catalog?
>
> Well, he wasn't actually issu
Robert Haas writes:
> I'm still puzzled that Tomas got it working at all. If MyDatabaseId
> hasn't been set yet, the how did we manage to build a relcache entry
> for anything - let alone an unshared catalog?
Well, he wasn't actually issuing a SQL query, just calling some of the
pgstat.c subrout
On Sun, Dec 4, 2011 at 4:26 PM, Tom Lane wrote:
> Tomas Vondra writes:
>> What about the pg_stat_activity - is it safe to access that from auth
>> hook or is that just a coincidence that it works (and might stop working
>> in the future)?
>
> It doesn't seem like a good thing to rely on. There's
Tomas Vondra writes:
> What about the pg_stat_activity - is it safe to access that from auth
> hook or is that just a coincidence that it works (and might stop working
> in the future)?
It doesn't seem like a good thing to rely on. There's certainly no
testing being done that would cause us to n
On 4.12.2011 17:10, Tom Lane wrote:
> Tomas Vondra writes:
>> Anyway, the code I posted does not fail because of pg_stat_activity, it
>> fails because it attempts for find the dbname/username for the backends
>> (read from pg_stat_activity).
>
> Well, get_database_name tries to do a syscache look
Tomas Vondra writes:
> On 4.12.2011 05:19, Tom Lane wrote:
>> It should be possible to access shared catalogs from an auth hook.
>> pg_stat_activity is neither shared nor a catalog. Like Robert,
>> I find it astonishing that this works ever, because the info needed
>> simply isn't available until
On 4.12.2011 05:19, Tom Lane wrote:
> Tomas Vondra writes:
>> That might explain why it fails at first and then works just fine,
>> although it's a bit strange. Wouldn't that mean you can't access any
>> catalogs from the auth hook?
>
> It should be possible to access shared catalogs from an auth
Tomas Vondra writes:
> That might explain why it fails at first and then works just fine,
> although it's a bit strange. Wouldn't that mean you can't access any
> catalogs from the auth hook?
It should be possible to access shared catalogs from an auth hook.
pg_stat_activity is neither shared nor
On 3.12.2011 23:37, Robert Haas wrote:
> 2011/12/3 Tomas Vondra :
>> psql: FATAL: cannot read pg_class without having selected a database
>>
>> I've found this happens because the extension defines a client auth hook
>> that reads pg_stat_activity. The really interesting thing is that this
>> happ
2011/12/3 Tomas Vondra :
> psql: FATAL: cannot read pg_class without having selected a database
>
> I've found this happens because the extension defines a client auth hook
> that reads pg_stat_activity. The really interesting thing is that this
> happens only when I start several backends 'at the
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