[Pgpool-general] pool_add_prepared_statement: prepared statement already exists

Glyn Astill glynastill at yahoo.co.uk
Tue Jan 11 12:35:24 UTC 2011


--- On Tue, 11/1/11, Toshihiro Kitagawa <kitagawa at sraoss.co.jp> wrote:
> Glyn Astill <glynastill at yahoo.co.uk>
> wrote:
> 
> > --- On Tue, 11/1/11, Tatsuo Ishii <ishii at sraoss.co.jp>
> wrote:
> > 
> > > > The previous error with the
> > > pool_passwd appears to have gone on startup, but
> it still
> > > appears when the server is stopped.
> > > 
> > > Can you please explain more detail?
> > > 
> > 
> > When I stop pgpool-II I get the following message:
> > 
> > 2011-01-11 09:44:18 ERROR: pid 13462:
> pool_init_pool_passwd: couldn't open
> /usr/local/etc/pool_passwd. reason: Permission denied
> > stop request sent to pgpool. waiting for
> termination....done.
> > 
> > This doesn't seem to cause a problem, so is it
> expected behaviour?
> > 
> > > > Also I'm seeing a problem where a namaed
> prepared
> > > statement gets deallocated but pgpool thinks it
> still exists
> > > when my app tries to recreate it.
> > > > 
> > > > The output of the log is here:
> > > > 
> > > > http://www.privatepaste.com/c3068423a3
> > > > 
> > > > Was thinking it could be something to do
> with this
> > > change? :
> > > > 
> > > > http://pgfoundry.org/pipermail/pgpool-committers/2010-October/001507.html
> > > 
> > > That change was made by Toshihiro. Toshihiro?
> > 
> 
> I think that change is not the cause of this issue. 
> 
> I found a bug that happen when "DEALLOCATE" by simple query
> protocol
> was sent after extended query protocol was sent.
> 
> I created a temporary patch for V3_0_STABLE until next
> version up.
> Can you please try including patches?
> 

I've applied both patches, but I'm not seeing any changes to either issue.

I've attached an strace log where I've:

1) started pgpool
2) connected from a client
3) had that client issue the prepare, deallocate and prepare to get the error
4) killed pgpool

Let me know if this is any use.

Thanks
Glyn


      
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