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problem with clustering in ops 3.5

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Laxmi Narayana-3

problem with clustering in ops 3.5

Hi,

I am using ops 3.5 xforms. When I deploy <distributable/> tag in web.xml. I am getting the following error,

Caused by: java.lang.IllegalArgumentException: Attribute [javax.portlet.p.ProcessRepository_WAR_ops_LAYOUT_PRI.1002.2?org.orbeon.oxf.buffered-response] is not serializable

Does ops 3.5 supports clustering...?

Can any one please help me its urgent ?

Thanks in advance

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Erik Bruchez

Re: problem with clustering in ops 3.5

Administrator

What container are you using?

I don't think we have tried to cluster 3.5, and we have quite limited
knowledge of the topic.

I am not sure what requirements there are for an application to be
distributable in your environment, but in general Orbeon Forms will
store state information in the application context. This alone may
mean that it is not distributable. Can you point to some documentation
about this?

Certainly, you can use load-balancing with Orbeon Forms, as long as
you have sticky sessions.

-Erik

On Feb 14, 2008, at 2:38 AM, Laxmi Narayana wrote:

> Hi,
> I am using ops 3.5 xforms. When I deploy <distributable/> tag in
> web.xml. I am getting the following error,
> Caused by: java.lang.IllegalArgumentException: Attribute
> [javax.portlet.p.ProcessRepository_WAR_ops_LAYOUT_PRI.1002.2?
> org.orbeon.oxf.buffered-response] is not serializable
>
> Does ops 3.5 supports clustering...?
>
> Can any one please help me its urgent ?
>
> Thanks in advance
>

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http://www.orbeon.com/

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Laxmi Narayana-3

Re: Re: problem with clustering in ops 3.5

I am using Liferay portal 4.2.X!

Now the problem is we are not able to replicate portal session for OPS portlets.

All other JSP, Struts, Spring based portlets are working fine.

My doubt is ops portlet is not registered in portal session, So state information is not getting stored.

And one more thing you can help is Where the application context is maintained?

Is it in memory or any configuration file like spring?

Thanks & Regards,

Laxmi Garu.

On 2/14/08, Erik Bruchez <[hidden email]> wrote:

What container are you using?

I don't think we have tried to cluster 3.5, and we have quite limited
knowledge of the topic.

I am not sure what requirements there are for an application to be
distributable in your environment, but in general Orbeon Forms will
store state information in the application context. This alone may
mean that it is not distributable. Can you point to some documentation
about this?

Certainly, you can use load-balancing with Orbeon Forms, as long as
you have sticky sessions.

-Erik

On Feb 14, 2008, at 2:38 AM, Laxmi Narayana wrote:

> Hi,
> I am using ops 3.5 xforms. When I deploy <distributable/> tag in
> web.xml. I am getting the following error,
> Caused by: java.lang.IllegalArgumentException: Attribute
> [javax.portlet.p.ProcessRepository_WAR_ops_LAYOUT_PRI.1002.2?
> org.orbeon.oxf.buffered-response] is not serializable
>
> Does ops 3.5 supports clustering...?
>
> Can any one please help me its urgent ?
>
> Thanks in advance
>

--
Orbeon Forms - Web Forms for the Enterprise Done the Right Way
http://www.orbeon.com/

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Erik Bruchez

Re: Re: Re: problem with clustering in ops 3.5

Administrator

On Feb 18, 2008, at 1:40 AM, Laxmi Narayana wrote:

> I am using Liferay portal 4.2.X!
>
> Now the problem is we are not able to replicate portal session for
> OPS portlets.
>
> All other JSP, Struts, Spring based portlets are working fine.
>
> My doubt is ops portlet is not registered in portal session, So
> state information is not getting stored.

I fear that with 3.5, the session may not be serializable, so you
can't replicate it. But if so, you should see an error from your
container specifically pointing to that issue.

> And one more thing you can help is Where the application context is
> maintained?
>
> Is it in memory or any configuration file like spring?

By "application context", I mean that some Java objects are stored
either as ServletContext attributes (for example, in 3.6, the XForms
state store), or as static variables in the webapp (for caches, so it
should be ok if that's not replicated). But yes, I am talking about
Java objects here.

Now maybe the replication software will also attempt to replicate
ServletContext attributes (I guess it should if it's doing a decent
job), but I don't think we have taken any steps to ensure that that
data stored there is serializable.

The bottom line is that since we haven't taken any steps to ensure
that Orbeon Forms can be replicated, you are likely to have issues
with replication. But it would be great if you could figure out in
your scenario where things break.

-Erik

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Orbeon Forms - Web Forms for the Enterprise Done the Right Way
http://www.orbeon.com/

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