Hi Carlo,
for a totally different issue on another project (not even related to JMS)
I had similar exception in the past.
If memory serves me correctly the fix was in adding commons-pool2-2.8.0.jar
to the classpath.

(Probably JMS is still inheriting an older one from the parent poms?)

Cheers,
Daniele








On Thu, Apr 30, 2020 at 4:23 PM carlo cancellieri <carlo.cancelli...@fao.org>
wrote:

> Dear Andrea,
>  Following up your mail, yes, probably you where right about multiple jars
> into lib/ folder, so we decided to perform a clean test from scratch.
>
> I've asked to perform a clean test with the geoserver-2.17.0, we are over
> windows10 with oracle jdk8 and tomcat-8 (but also tested with tomcat-9).
>
> We are able to start geoserver without that plugin.
>
> If we install JMS Cluster plugin we drop into missing library as shown in
> the attached logs (and below):
>
> > java.lang.NoClassDefFoundError:
> org/apache/commons/pool2/KeyedPooledObjectFactory
>
> Not sure why but maybe something has changed in the dependency tree or in
> the default ActiveMQ configurations.
>
> I apologize but we could not perfom other tests over this issue.
>
> Cheers,
> C.
>
> Il giorno mer 29 apr 2020 alle ore 18:17 carlo cancellieri <
> carlo.cancelli...@fao.org> ha scritto:
>
>> I’ll let u know, let me Ask for confirmation to the tester.
>> C
>>
>> Il giorno mer 29 apr 2020 alle 17:19 Andrea Aime <
>> andrea.a...@geo-solutions.it> ha scritto:
>>
>>> On Wed, Apr 29, 2020 at 4:38 PM carlo cancellieri <
>>> carlo.cancelli...@fao.org> wrote:
>>>
>>>> Dear List,
>>>>  I know it's unmantained so this is just to keep you informed that JMS
>>>> module is not working anymore on 2.17.x it fail to start throwing exception
>>>> cause:
>>>> Multiple beans of type org.geoserver.config.GeoServerLoader
>>>>
>>>
>>> That is odd, I recently did a performance test comparing JMS config,
>>> JDBCConfig and Stratus, they all started correctly.
>>> Maybe you had multiple clustering solutions in the same GeoServer?
>>>
>>> Cheers
>>> Andrea
>>>
>>> == GeoServer Professional Services from the experts! Visit
>>> http://goo.gl/it488V for more information. == Ing. Andrea Aime @geowolf
>>> Technical Lead GeoSolutions S.A.S. Via di Montramito 3/A 55054 Massarosa
>>> <https://www.google.com/maps/search/Via+di+Montramito+3%2FA%0D%0A55054++Massarosa?entry=gmail&source=g>
>>> (LU) phone: +39 0584 962313 fax: +39 0584 1660272 mob: +39 339 8844549
>>> http://www.geo-solutions.it http://twitter.com/geosolutions_it
>>> ------------------------------------------------------- *Con
>>> riferimento alla normativa sul trattamento dei dati personali (Reg. UE
>>> 2016/679 - Regolamento generale sulla protezione dei dati “GDPR”), si
>>> precisa che ogni circostanza inerente alla presente email (il suo
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>>> messaggio Le è giunto per errore, è tenuta/o a cancellarlo, ogni altra
>>> operazione è illecita. Le sarei comunque grato se potesse darmene notizia.
>>> This email is intended only for the person or entity to which it is
>>> addressed and may contain information that is privileged, confidential or
>>> otherwise protected from disclosure. We remind that - as provided by
>>> European Regulation 2016/679 “GDPR” - copying, dissemination or use of this
>>> e-mail or the information herein by anyone other than the intended
>>> recipient is prohibited. If you have received this email by mistake, please
>>> notify us immediately by telephone or e-mail.*
>>> _______________________________________________
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>>>
>>> Please make sure you read the following two resources before posting to
>>> this list:
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>>> http://www.ianturton.com/talks/foss4g.html#/
>>> - The GeoServer user list posting guidelines:
>>> http://geoserver.org/comm/userlist-guidelines.html
>>>
>>> If you want to request a feature or an improvement, also see this:
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>>>
>>>
>>> Geoserver-users@lists.sourceforge.net
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>> --
>>
>> --
>> Mr. Carlo Cancellieri
>> *skype*: ccancellieri
>> *Twitter*: @cancellieric
>> *LinkedIn*: http://it.linkedin.com/in/ccancellieri/
>>
>
>
> --
>
> --
> Mr. Carlo Cancellieri
> *skype*: ccancellieri
> *Twitter*: @cancellieric
> *LinkedIn*: http://it.linkedin.com/in/ccancellieri/
> _______________________________________________
> Geoserver-users mailing list
>
> Please make sure you read the following two resources before posting to
> this list:
> - Earning your support instead of buying it, but Ian Turton:
> http://www.ianturton.com/talks/foss4g.html#/
> - The GeoServer user list posting guidelines:
> http://geoserver.org/comm/userlist-guidelines.html
>
> If you want to request a feature or an improvement, also see this:
> https://github.com/geoserver/geoserver/wiki/Successfully-requesting-and-integrating-new-features-and-improvements-in-GeoServer
>
>
> Geoserver-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/geoserver-users
>


-- 
Regards,
Daniele Romagnoli
==
GeoServer Professional Services from the experts! Visit http://goo.gl/it488V
for more information.
==

Ing. Daniele Romagnoli
Senior Software Engineer

GeoSolutions S.A.S.
Via di Montramito 3/A
55054  Massarosa (LU)
Italy
phone: +39 0584 962313
fax:      +39 0584 1660272

http://www.geo-solutions.it
http://twitter.com/geosolutions_it

-------------------------------------------------------

Con riferimento alla normativa sul trattamento dei dati personali (Reg. UE
2016/679 - Regolamento generale sulla protezione dei dati “GDPR”), si
precisa che ogni circostanza inerente alla presente email (il suo
contenuto, gli eventuali allegati, etc.) è un dato la cui conoscenza è
riservata al/i solo/i destinatario/i indicati dallo scrivente. Se il
messaggio Le è giunto per errore, è tenuta/o a cancellarlo, ogni altra
operazione è illecita. Le sarei comunque grato se potesse darmene notizia.

This email is intended only for the person or entity to which it is
addressed and may contain information that is privileged, confidential or
otherwise protected from disclosure. We remind that - as provided by
European Regulation 2016/679 “GDPR” - copying, dissemination or use of this
e-mail or the information herein by anyone other than the intended
recipient is prohibited. If you have received this email by mistake, please
notify us immediately by telephone or e-mail.
_______________________________________________
Geoserver-users mailing list

Please make sure you read the following two resources before posting to this 
list:
- Earning your support instead of buying it, but Ian Turton: 
http://www.ianturton.com/talks/foss4g.html#/
- The GeoServer user list posting guidelines: 
http://geoserver.org/comm/userlist-guidelines.html

If you want to request a feature or an improvement, also see this: 
https://github.com/geoserver/geoserver/wiki/Successfully-requesting-and-integrating-new-features-and-improvements-in-GeoServer


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