[wildfly-dev] Transactions requirement during the graceful shutdown

[Michael Musgrove]

If a remote server has created a transaction and made an ejb call into the
shutting down server then initially our (CORBA) interceptors will trigger
and we will create a subordinate transaction and put that on the thread. So
provided the EJB subsystem checks the association and lets the request
through if it finds a transaction then we will be covered. Does the EJB
subsystem perform this check?

On Thu, Jul 7, 2016 at 11:02 AM, Gytis Trikleris <gtrikler at redhat.com>
wrote:

> Sounds that we shouldn’t do extra shutdown logic for JTA and JTS other
> than possibly provide SPI for EJB and CORBA?
>
> Gytis
>
> On 6 Jul 2016, at 01:00, Stuart Douglas <stuart.w.douglas at gmail.com>
> wrote:
>
> Local transaction creation has to be allowed during graceful shutdown.
> e.g. if a web request is in the process of running and it attempts to start
> a transaction this must be allowed (the core requirement of graceful
> shutdown is that requests that have already been accepted continue to run
> as normal).
>
> The only case when transactions should be disallowed are remote
> transactions, such as remote EJB and CORBA, which I think should already be
> dealt with at the respective endpoints (in terms of disallowing new
> transaction creation). I think the main thing that needs consideration here
> is what to do with EJB requests that would otherwise be rejected that are
> part of an existing remote transaction. We probably need some way of
> identifying these requests and allowing them to proceed.
>
> Stuart
>
>
>
> On Mon, Jul 4, 2016 at 11:11 PM, Gytis Trikleris <gtrikler at redhat.com>
> wrote:
>
>> Hello,
>>
>> I’m in the process of writing an analysis document for
>> https://issues.jboss.org/browse/EAP7-459 and need your input.
>> Specifically I’m looking for the list of subsystems which might need to
>> create new transactions during the graceful shutdown. Normally new
>> transactions would not be allowed then, but this might stop other
>> subsystems to shutdown properly. If such subsystems exist we’ll need to
>> think of the way how to filter out their requests (e.g. providing SPI for
>> them).
>>
>> Thanks,
>> Gytis
>> _______________________________________________
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>
>
>
>
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>



-- 
Michael Musgrove
Transactions Team
e: mmusgrov at redhat.com
t: +44 191 243 0870

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