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Posted to dev@cocoon.apache.org by Carsten Ziegeler <cz...@s-und-n.de> on 2002/12/05 10:46:11 UTC
[SHOWSTOPPER?] Mixed sessions
Hi,
we have several reports that under some cicumstances it
seems that sessions are mixed. It seems that under
heavy load a user A might get the session of user B.
Now generally I would call this a showstopper for
the 2.0.4 release.
Unfortunately we don't have a reproducable test case
for this - does anyone have one?
Or are these problems not related to Cocoon but
to any third party components?
I suggest that as long as the reason for this
problem is not found, we should delay the release.
What do you think?
Thanks
Carsten
Carsten Ziegeler
Open Source Group, S&N AG
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RE: [SHOWSTOPPER?] Mixed sessions
Posted by Antonio Gallardo <ag...@agsoftware.dnsalias.com>.
Thanks Carsten. :-D
My environment is:
Server Hardware:
Pentium III aprox. 500Mhz. (I am sure this is not slower).
RAM: 384 MB
HD: 10 GB.
Please note that this server only host Cocoon nothing more. There is no
running other task or something similar process. The computer was
installed from a clear disk to run the Cocoon Application.
Server Software:
OS: Red Hat Linux 8.0 (lastest updates)
Java: J2SDK 1.4.1_01
Servelt Engine: Apache Tomcat 4.1.12
XML Framework: Cocoon 2.1. CVS from 4-Dic-2002 (aprox. 5:00 a.m. CST)
Database: PostgreSQL 7.2.2 (that comes with Red Hat Linux 8.0)
Note: We installed Gnome (GUI) to make easier the install, but the server
start in text mode (level 3). Of course we can start GUI from a user
session.
Clients use mainly MS Windows version 95/98/Me/2000/XP
also there are some clients running on Linux :-)
Client Browsers: MS IE from version 5.0 to 6.0 SP1.
Also: Some Mozilla 1.0.1, Konqueror 3.0.x and Nautilus.
As you can see this is also a fine "test" enviroment for Cocoon.
I have a meet with the users in a hour. When this will end I will post
what happened yesterday. I croos my fingers because I want Cocoon pass the
yesterday test. :-D
Best Regards,
Antonio Gallardo.
PS: I know that my english is very poor, but I am glad that you got my
message in the correct way. ;-)
Carsten Ziegeler dijo:
> Hi Antonio,
>
> if you have more information please let us now. For example which
> environment do you use (JDK, Operating System, Servlet Engine).
>
> Thanks
> Carsten
>
> Carsten Ziegeler
> Open Source Group, S&N AG
>
>
>> -----Original Message-----
>> From: Antonio Gallardo [mailto:agallardo@agsoftware.dnsalias.com]
>> Sent: Thursday, December 05, 2002 12:13 PM
>> To: cocoon-dev@xml.apache.org
>> Subject: Re: [SHOWSTOPPER?] Mixed sessions
>>
>>
>> Hi,
>>
>> Sorry, but this is not a proxy error or a bad network configuration.
>> We turned off the proxy and the problem continues. Couriously before
>> 25-Nov everything was OK. But after that date the problems with mixed
>> sessions started. We are also checking all the network environment and
>> everything is OK.
>>
>> Yesterday morning I installed the lastest CVS of Cocoon 2.1 from 7:00
>> a.m. CST.
>>
>> And because this problem take some time to start the mixing of
>> sessions. I will be sure later today if there were problems. I will
>> ask users how was yesterday and I promise I will put the feedback
>> here.
>>
>> Please, next time ask more info (if you need) about a related problem.
>> I was sended many mails alerting about that but nobody response my
>> mails. Why ignore a site with 40 users? If I will have problems with
>> few users I will dont post nothing here and will resolve the problem
>> locally.
>>
>> I think that the problem was related to the multithreading issue that
>> Carsten pointed 2 days ago. But I saw reactions until another user
>> report another diferent problem.
>>
>> I didnt sleep two days because of that problem. :-(
>>
>> By the way, I think we miss a docs about how to configure cocoon for a
>> production environment. Maybe some tips will be enough. I learned it
>> in the hard way. :-(
>>
>> As long as I know there is no info about that. I will post a doc about
>> that in wiki. I hope another people will help in this effort.
>>
>> Regards,
>>
>> Antonio Gallardo.
>>
>>
>>
>> Sylvain Wallez dijo:
>> > Carsten Ziegeler wrote:
>> >
>> >>Hi,
>> >>
>> >>we have several reports that under some cicumstances it
>> >>seems that sessions are mixed. It seems that under
>> >>heavy load a user A might get the session of user B.
>> >>Now generally I would call this a showstopper for
>> >>the 2.0.4 release.
>> >>
>> >>Unfortunately we don't have a reproducable test case
>> >>for this - does anyone have one?
>> >>Or are these problems not related to Cocoon but
>> >>to any third party components?
>> >>
>> >>I suggest that as long as the reason for this
>> >>problem is not found, we should delay the release.
>> >>
>> >>What do you think?
>> >>
>> >>
>> >
>> > I guess you're referring to the "[Authentication] - User with mixed
>> Sessions" thread on cocoon-users, right ?
>> >
>> > This problem is IMO more related to proxy configuration than to
>> Cocoon, at it seems that the proxy doesn't distinguish requests
>> having different
>> > session cookies.
>> >
>> > So this should affect *every* servlet application and not Cocoon in
>> particular, and therefore I wouldn't consider it as a showstopper.
>> >
>> > Nevertheless, we shouldn't ignore this problem, and see if we can
>> use the cache information available in the pipeline to automatically
>> set the
>> > "Cache-Control" header. But this can come in a future version.
>> >
>> > Sylvain
>> >
>> > --
>> > Sylvain Wallez Anyware Technologies
>> http://www.apache.org/~sylvain http://www.anyware-tech.com
>> { XML, Java, Cocoon, OpenSource }*{ Training, Consulting, Projects }
>> >
>> >
>> >
>> > ---------------------------------------------------------------------
>> To unsubscribe, e-mail: cocoon-dev-unsubscribe@xml.apache.org
>> > For additional commands, email: cocoon-dev-help@xml.apache.org
>>
>>
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: cocoon-dev-unsubscribe@xml.apache.org
>> For additional commands, email: cocoon-dev-help@xml.apache.org
>>
>
>
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[GOOD NEWS] - RE: [SHOWSTOPPER?] Mixed sessions
Posted by Antonio Gallardo <ag...@agsoftware.dnsalias.com>.
GOOD NEWS!!
The yesterday update of the Cocoon engine works fine all the day. I will
does not change it for a week to see how it works!
Then the problem was the same with the multhreading.
Well done!
I hope today will sleep :-D.
Antonio Gallardo.
Carsten Ziegeler dijo:
> Hi Antonio,
>
> if you have more information please let us now. For example which
> environment do you use (JDK, Operating System, Servlet Engine).
>
> Thanks
> Carsten
>
> Carsten Ziegeler
> Open Source Group, S&N AG
>
>
>> -----Original Message-----
>> From: Antonio Gallardo [mailto:agallardo@agsoftware.dnsalias.com]
>> Sent: Thursday, December 05, 2002 12:13 PM
>> To: cocoon-dev@xml.apache.org
>> Subject: Re: [SHOWSTOPPER?] Mixed sessions
>>
>>
>> Hi,
>>
>> Sorry, but this is not a proxy error or a bad network configuration.
>> We turned off the proxy and the problem continues. Couriously before
>> 25-Nov everything was OK. But after that date the problems with mixed
>> sessions started. We are also checking all the network environment and
>> everything is OK.
>>
>> Yesterday morning I installed the lastest CVS of Cocoon 2.1 from 7:00
>> a.m. CST.
>>
>> And because this problem take some time to start the mixing of
>> sessions. I will be sure later today if there were problems. I will
>> ask users how was yesterday and I promise I will put the feedback
>> here.
>>
>> Please, next time ask more info (if you need) about a related problem.
>> I was sended many mails alerting about that but nobody response my
>> mails. Why ignore a site with 40 users? If I will have problems with
>> few users I will dont post nothing here and will resolve the problem
>> locally.
>>
>> I think that the problem was related to the multithreading issue that
>> Carsten pointed 2 days ago. But I saw reactions until another user
>> report another diferent problem.
>>
>> I didnt sleep two days because of that problem. :-(
>>
>> By the way, I think we miss a docs about how to configure cocoon for a
>> production environment. Maybe some tips will be enough. I learned it
>> in the hard way. :-(
>>
>> As long as I know there is no info about that. I will post a doc about
>> that in wiki. I hope another people will help in this effort.
>>
>> Regards,
>>
>> Antonio Gallardo.
>>
>>
>>
>> Sylvain Wallez dijo:
>> > Carsten Ziegeler wrote:
>> >
>> >>Hi,
>> >>
>> >>we have several reports that under some cicumstances it
>> >>seems that sessions are mixed. It seems that under
>> >>heavy load a user A might get the session of user B.
>> >>Now generally I would call this a showstopper for
>> >>the 2.0.4 release.
>> >>
>> >>Unfortunately we don't have a reproducable test case
>> >>for this - does anyone have one?
>> >>Or are these problems not related to Cocoon but
>> >>to any third party components?
>> >>
>> >>I suggest that as long as the reason for this
>> >>problem is not found, we should delay the release.
>> >>
>> >>What do you think?
>> >>
>> >>
>> >
>> > I guess you're referring to the "[Authentication] - User with mixed
>> Sessions" thread on cocoon-users, right ?
>> >
>> > This problem is IMO more related to proxy configuration than to
>> Cocoon, at it seems that the proxy doesn't distinguish requests
>> having different
>> > session cookies.
>> >
>> > So this should affect *every* servlet application and not Cocoon in
>> particular, and therefore I wouldn't consider it as a showstopper.
>> >
>> > Nevertheless, we shouldn't ignore this problem, and see if we can
>> use the cache information available in the pipeline to automatically
>> set the
>> > "Cache-Control" header. But this can come in a future version.
>> >
>> > Sylvain
>> >
>> > --
>> > Sylvain Wallez Anyware Technologies
>> http://www.apache.org/~sylvain http://www.anyware-tech.com
>> { XML, Java, Cocoon, OpenSource }*{ Training, Consulting, Projects }
>> >
>> >
>> >
>> > ---------------------------------------------------------------------
>> To unsubscribe, e-mail: cocoon-dev-unsubscribe@xml.apache.org
>> > For additional commands, email: cocoon-dev-help@xml.apache.org
>>
>>
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: cocoon-dev-unsubscribe@xml.apache.org
>> For additional commands, email: cocoon-dev-help@xml.apache.org
>>
>
>
> --------------------------------------------------------------------- To
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RE: [SHOWSTOPPER?] Mixed sessions
Posted by Carsten Ziegeler <cz...@s-und-n.de>.
Vadim Gritsenko wrote:
>
> Carsten Ziegeler wrote:
>
> >Vadim Gritsenko wrote:
> >
> >
> >>Is it problem with 2.1 or 2.0.4? If with 2.1, why 2.0.4 release
> >>is affected?
> >>
> >>
> >>
> >It's a problem with both.
> >
> >
>
> Gotcha.
>
> Is it due to your recent fixes in env/env stack/etc?
>
Yes/No - depends :)
Ok, more precisly: With the fixes the environment stack handling
seems to work perfectly now :) - but unfortunately there seem
to be other parts not related to the fixes which now break
because they are running with a working environment.
After some investigations from Volker and his crew it seems
that the problem lies in the extra thread handling of the
portal engine. For each coplet a sub thread is started.
He will report on this as soon as he has results - I
currently started with a solution on this and if this is
really the problem, we can make the release tomorrow at last.
Carsten
Carsten Ziegeler
Open Source Group, S&N AG
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Re: [SHOWSTOPPER?] Mixed sessions
Posted by Vadim Gritsenko <va...@verizon.net>.
Carsten Ziegeler wrote:
>Vadim Gritsenko wrote:
>
>
>>Is it problem with 2.1 or 2.0.4? If with 2.1, why 2.0.4 release
>>is affected?
>>
>>
>>
>It's a problem with both.
>
>
Gotcha.
Is it due to your recent fixes in env/env stack/etc?
Vadim
>Carsten
>
>Carsten Ziegeler
>Open Source Group, S&N AG
>
>
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RE: [SHOWSTOPPER?] Mixed sessions
Posted by Carsten Ziegeler <cz...@s-und-n.de>.
Vadim Gritsenko wrote:
>
> Is it problem with 2.1 or 2.0.4? If with 2.1, why 2.0.4 release
> is affected?
>
It's a problem with both.
Carsten
Carsten Ziegeler
Open Source Group, S&N AG
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Re: [SHOWSTOPPER?] Mixed sessions
Posted by Vadim Gritsenko <va...@verizon.net>.
Carsten Ziegeler wrote:
>>From: Antonio Gallardo [mailto:agallardo@agsoftware.dnsalias.com]
>>
>>
...
>>Yesterday morning I installed the lastest CVS of Cocoon 2.1 from 7:00 a.m.
>>CST.
>>
>>
...
>>Antonio Gallardo.
>>
>>
>>Sylvain Wallez dijo:
>>
>>
>>>Carsten Ziegeler wrote:
>>>
>>>
>>>
>>>>Hi,
>>>>
>>>>we have several reports that under some cicumstances it
>>>>seems that sessions are mixed. It seems that under
>>>>heavy load a user A might get the session of user B.
>>>>Now generally I would call this a showstopper for
>>>>the 2.0.4 release.
>>>>
>>>>Unfortunately we don't have a reproducable test case
>>>>for this - does anyone have one?
>>>>Or are these problems not related to Cocoon but
>>>>to any third party components?
>>>>
>>>>I suggest that as long as the reason for this
>>>>problem is not found, we should delay the release.
>>>>
>>>>What do you think?
>>>>
>>>>
Is it problem with 2.1 or 2.0.4? If with 2.1, why 2.0.4 release is affected?
Vadim
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RE: [SHOWSTOPPER?] Mixed sessions
Posted by Carsten Ziegeler <cz...@s-und-n.de>.
Hi Antonio,
if you have more information please let us now. For example which
environment do you use (JDK, Operating System, Servlet Engine).
Thanks
Carsten
Carsten Ziegeler
Open Source Group, S&N AG
> -----Original Message-----
> From: Antonio Gallardo [mailto:agallardo@agsoftware.dnsalias.com]
> Sent: Thursday, December 05, 2002 12:13 PM
> To: cocoon-dev@xml.apache.org
> Subject: Re: [SHOWSTOPPER?] Mixed sessions
>
>
> Hi,
>
> Sorry, but this is not a proxy error or a bad network configuration. We
> turned off the proxy and the problem continues. Couriously before 25-Nov
> everything was OK. But after that date the problems with mixed sessions
> started. We are also checking all the network environment and everything
> is OK.
>
> Yesterday morning I installed the lastest CVS of Cocoon 2.1 from 7:00 a.m.
> CST.
>
> And because this problem take some time to start the mixing of sessions. I
> will be sure later today if there were problems. I will ask users how was
> yesterday and I promise I will put the feedback here.
>
> Please, next time ask more info (if you need) about a related problem. I
> was sended many mails alerting about that but nobody response my mails.
> Why ignore a site with 40 users? If I will have problems with few users I
> will dont post nothing here and will resolve the problem locally.
>
> I think that the problem was related to the multithreading issue that
> Carsten pointed 2 days ago. But I saw reactions until another user report
> another diferent problem.
>
> I didnt sleep two days because of that problem. :-(
>
> By the way, I think we miss a docs about how to configure cocoon for a
> production environment. Maybe some tips will be enough. I learned it in
> the hard way. :-(
>
> As long as I know there is no info about that. I will post a doc about
> that in wiki. I hope another people will help in this effort.
>
> Regards,
>
> Antonio Gallardo.
>
>
>
> Sylvain Wallez dijo:
> > Carsten Ziegeler wrote:
> >
> >>Hi,
> >>
> >>we have several reports that under some cicumstances it
> >>seems that sessions are mixed. It seems that under
> >>heavy load a user A might get the session of user B.
> >>Now generally I would call this a showstopper for
> >>the 2.0.4 release.
> >>
> >>Unfortunately we don't have a reproducable test case
> >>for this - does anyone have one?
> >>Or are these problems not related to Cocoon but
> >>to any third party components?
> >>
> >>I suggest that as long as the reason for this
> >>problem is not found, we should delay the release.
> >>
> >>What do you think?
> >>
> >>
> >
> > I guess you're referring to the "[Authentication] - User with mixed
> > Sessions" thread on cocoon-users, right ?
> >
> > This problem is IMO more related to proxy configuration than to Cocoon,
> > at it seems that the proxy doesn't distinguish requests having different
> > session cookies.
> >
> > So this should affect *every* servlet application and not Cocoon in
> > particular, and therefore I wouldn't consider it as a showstopper.
> >
> > Nevertheless, we shouldn't ignore this problem, and see if we can use
> > the cache information available in the pipeline to automatically set the
> > "Cache-Control" header. But this can come in a future version.
> >
> > Sylvain
> >
> > --
> > Sylvain Wallez Anyware Technologies
> > http://www.apache.org/~sylvain http://www.anyware-tech.com {
> > XML, Java, Cocoon, OpenSource }*{ Training, Consulting, Projects }
> >
> >
> >
> > --------------------------------------------------------------------- To
> > unsubscribe, e-mail: cocoon-dev-unsubscribe@xml.apache.org
> > For additional commands, email: cocoon-dev-help@xml.apache.org
>
>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: cocoon-dev-unsubscribe@xml.apache.org
> For additional commands, email: cocoon-dev-help@xml.apache.org
>
---------------------------------------------------------------------
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Re: [SHOWSTOPPER?] Mixed sessions
Posted by Antonio Gallardo <ag...@agsoftware.dnsalias.com>.
Hi,
Sorry, but this is not a proxy error or a bad network configuration. We
turned off the proxy and the problem continues. Couriously before 25-Nov
everything was OK. But after that date the problems with mixed sessions
started. We are also checking all the network environment and everything
is OK.
Yesterday morning I installed the lastest CVS of Cocoon 2.1 from 7:00 a.m.
CST.
And because this problem take some time to start the mixing of sessions. I
will be sure later today if there were problems. I will ask users how was
yesterday and I promise I will put the feedback here.
Please, next time ask more info (if you need) about a related problem. I
was sended many mails alerting about that but nobody response my mails.
Why ignore a site with 40 users? If I will have problems with few users I
will dont post nothing here and will resolve the problem locally.
I think that the problem was related to the multithreading issue that
Carsten pointed 2 days ago. But I saw reactions until another user report
another diferent problem.
I didnt sleep two days because of that problem. :-(
By the way, I think we miss a docs about how to configure cocoon for a
production environment. Maybe some tips will be enough. I learned it in
the hard way. :-(
As long as I know there is no info about that. I will post a doc about
that in wiki. I hope another people will help in this effort.
Regards,
Antonio Gallardo.
Sylvain Wallez dijo:
> Carsten Ziegeler wrote:
>
>>Hi,
>>
>>we have several reports that under some cicumstances it
>>seems that sessions are mixed. It seems that under
>>heavy load a user A might get the session of user B.
>>Now generally I would call this a showstopper for
>>the 2.0.4 release.
>>
>>Unfortunately we don't have a reproducable test case
>>for this - does anyone have one?
>>Or are these problems not related to Cocoon but
>>to any third party components?
>>
>>I suggest that as long as the reason for this
>>problem is not found, we should delay the release.
>>
>>What do you think?
>>
>>
>
> I guess you're referring to the "[Authentication] - User with mixed
> Sessions" thread on cocoon-users, right ?
>
> This problem is IMO more related to proxy configuration than to Cocoon,
> at it seems that the proxy doesn't distinguish requests having different
> session cookies.
>
> So this should affect *every* servlet application and not Cocoon in
> particular, and therefore I wouldn't consider it as a showstopper.
>
> Nevertheless, we shouldn't ignore this problem, and see if we can use
> the cache information available in the pipeline to automatically set the
> "Cache-Control" header. But this can come in a future version.
>
> Sylvain
>
> --
> Sylvain Wallez Anyware Technologies
> http://www.apache.org/~sylvain http://www.anyware-tech.com {
> XML, Java, Cocoon, OpenSource }*{ Training, Consulting, Projects }
>
>
>
> --------------------------------------------------------------------- To
> unsubscribe, e-mail: cocoon-dev-unsubscribe@xml.apache.org
> For additional commands, email: cocoon-dev-help@xml.apache.org
---------------------------------------------------------------------
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RE: [SHOWSTOPPER?] Mixed sessions
Posted by Carsten Ziegeler <cz...@s-und-n.de>.
Sylvain Wallez wrote:
>
> Carsten Ziegeler wrote:
>
> >Hi,
> >
> >we have several reports that under some cicumstances it
> >seems that sessions are mixed. It seems that under
> >heavy load a user A might get the session of user B.
> >Now generally I would call this a showstopper for
> >the 2.0.4 release.
> >
> >Unfortunately we don't have a reproducable test case
> >for this - does anyone have one?
> >Or are these problems not related to Cocoon but
> >to any third party components?
> >
> >I suggest that as long as the reason for this
> >problem is not found, we should delay the release.
> >
> >What do you think?
> >
> >
>
> I guess you're referring to the "[Authentication] - User with mixed
> Sessions" thread on cocoon-users, right ?
>
> This problem is IMO more related to proxy configuration than to Cocoon,
> at it seems that the proxy doesn't distinguish requests having different
> session cookies.
>
No unfortunately not, I refer to the mail from Greg and to some discussions
with Volker (of list) - and they both seem to have problems with mixed
sessions.
So it seems that there is a real problem.
Carsten
Carsten Ziegeler
Open Source Group, S&N AG
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Re: [SHOWSTOPPER?] Mixed sessions
Posted by Sylvain Wallez <sy...@anyware-tech.com>.
Carsten Ziegeler wrote:
>Hi,
>
>we have several reports that under some cicumstances it
>seems that sessions are mixed. It seems that under
>heavy load a user A might get the session of user B.
>Now generally I would call this a showstopper for
>the 2.0.4 release.
>
>Unfortunately we don't have a reproducable test case
>for this - does anyone have one?
>Or are these problems not related to Cocoon but
>to any third party components?
>
>I suggest that as long as the reason for this
>problem is not found, we should delay the release.
>
>What do you think?
>
>
I guess you're referring to the "[Authentication] - User with mixed
Sessions" thread on cocoon-users, right ?
This problem is IMO more related to proxy configuration than to Cocoon,
at it seems that the proxy doesn't distinguish requests having different
session cookies.
So this should affect *every* servlet application and not Cocoon in
particular, and therefore I wouldn't consider it as a showstopper.
Nevertheless, we shouldn't ignore this problem, and see if we can use
the cache information available in the pipeline to automatically set the
"Cache-Control" header. But this can come in a future version.
Sylvain
--
Sylvain Wallez Anyware Technologies
http://www.apache.org/~sylvain http://www.anyware-tech.com
{ XML, Java, Cocoon, OpenSource }*{ Training, Consulting, Projects }
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