[jboss-as7-dev] Parallel initialization of more web applications in EAR

[Marek Novotny]

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Ok, that is a reasonable explanation. I think we owe some Warning or
Note in documentation at least in Migration part to our users ;-).

On 01/30/2012 11:27 PM, David M. Lloyd wrote:
> I think it is safe to say that it is our general policy to adhere to 
> spec behavior.  If an application is incorrect by spec, but happens to 
> work with one app server, there can be no reasonable expectation for it 
> to always work.  This is because without a clear and specific additional 
> specification which explains the deviating behavior, there is no way we 
> can make any guarantees about compatibility.
> 
> I don't foresee us, now or in the future, bending over backwards to 
> guarantee permanent compatibility of non-spec-compliant apps (whether 
> the spec is the Java EE spec or any additional guarantees or 
> specifications we have implemented).
> 
> In other words... without this switch there is no guarantee specified or 
> implied about initialization order.  Our policy will generally be 
> "whichever order is the fastest possible while respecting dependencies, 
> disregarding all other factors".
> 
> On 01/30/2012 04:16 PM, Marek Novotny wrote:
> Well, I would like a confirmation that this behavior is by design and if
> application requires specific order you have to do it by configuration
> in application.xml. So for every such old application you need to do a
> migration.
> 
> I haven't found any JBoss AS 7 documentation about it so it was my
> question that I got it correctly ;-)
> 
> Dne 30.1.2012 23:10, Stuart Douglas napsal(a):
>>>> I'm not really sure what you are asking here, as far as I have see you have answered your own question, just use<initialize-in-order>true</initialize-in-order>  to get non-parallel startup.
>>>>
>>>> Stuart
>>>>
>>>>
>>>>
>>>> On 31/01/2012, at 8:59 AM, Marek Novotny wrote:
>>>>
>>>> Hi AS developers,
>>>>
>>>> I am exploring the behavior of parallel initialization of web
>>>> application in EAR. More concretely more than one web application in EAR.
>>>> I know that spec doesn't define the initialization order of EAR
>>>> submodules, but the parallel initialization of web application is new in
>>>> AS7 and this breaks the backward compatibility for existing enterprise
>>>> applications with multiple wars inside. New Java Enterprise  application
>>>> 6 configuration setting<initialize-in-order>true</initialize-in-order>
>>>> set up in application.xml can enable proper initialization flow, but
>>>> without it is not possible to deploy.
>>>>
>>>> Could somebody shed light on parallel web applicaiton init? Original
>>>> forum post https://community.jboss.org/message/635123
>>>>
>>>> And details could be seen also at
>>>> https://issues.jboss.org/browse/JBSEAM-4856?focusedCommentId=12662448&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-12662448
>>>>
>>>> Cheers,
>>>>
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>>>>
> 
> --
> Marek Novotny
> --
> JBoss Seam and WFK Productization Lead
> 
> Red Hat Czech s.r.o.
> Purkynova 99
> 612 45 Brno
> 
> Email: mnovotny at redhat.com
> Office phone: +420 532 294 287, ext. 82-62 087
> mobile: +420 608 509 230
>> _______________________________________________
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> 
> 

- -- 
Marek Novotny
- --
WFK and Seam Product Lead

Red Hat Czech s.r.o.
Purkynova 99
612 45 Brno
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