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[jsr345-experts] Re: EJB_SPEC-57) Define asynchronous thread behavior upon close of embeddable container]

  • From: Florent BENOIT <Florent.Benoit@...>
  • To: jsr345-experts@...
  • Subject: [jsr345-experts] Re: EJB_SPEC-57) Define asynchronous thread behavior upon close of embeddable container]
  • Date: Wed, 11 Jul 2012 18:48:39 +0200

+1 Option B without the last bullet

Florent

On 07/11/2012 03:06 AM, Marina Vatkina wrote:
Experts,

I'm not making any changes in this area until I hear your opinions...

-marina

Marina Vatkina wrote:
I can change the last sentence in the 1st par in this section to be either:

Option A:
During the processing of the close() method, the embeddable container must cancel all pending asynchronous invocations and call the PreDestroy methods of any singleton session bean instances in the application.

or

Option B:
During the processing of the close() method, the embeddable container performs the following steps:
   * cancels all pending asynchronous invocations
* calls the PreDestroy methods of any singleton session bean instances in the application
   * aborts execution of bean methods that are still active


My concern with the last bullet in the option (B) (or adding something similar to (A)) is that it's not clear that PreDestroy methods will be allowed to complete.

Let me know what you prefer.

-marina

Florent BENOIT wrote:
I think that now that async is supported for Embeddable container we should add the change on the section.


Florent


On 07/05/2012 10:50 PM, Marina Vatkina wrote:
Experts,

I'm not making any changes to the section "18.2.4Embeddable Container Shutdown" unless I hear otherwise.

-marina

Marina Vatkina wrote:
Does the spec need to say this explicitly?

thanks,
-marina

Jean-Louis MONTEIRO wrote:
+1


2012/6/19 Reza Rahman <reza_rahman@... <mailto:reza_rahman@...>>

    +1


    On 6/19/2012 12:07 PM, Antonio Goncalves wrote:
    Well, would expect the same behavior you discribe for GlassFish
    : the execution is aborted when the server shutsdown (I don't
    want the embedded container to get locked while a thread is
    trying to finish its processing).

    Antonio

    On Fri, Jun 15, 2012 at 11:38 PM, Marina Vatkina
<marina.vatkina@... <mailto:marina.vatkina@...>> wrote:

        Experts,

        What do your think? How do you expect your embedded
        containers handle the async calls during EJBContainer.close
        and JVM exit?

        GlassFish (RI) uses the same code for embedded and regular
        shutdown, where the bean is unloaded right away, and any
        method execution is pretty much aborted when the server
        shutdown event is received. JVM exit is intercepted and
        EJBContainer.close() steps are executed in the background.

        thanks,
        -marina

        -------- Original Message --------
        Subject:        [ejb-spec issues] [JIRA] Commented:
(EJB_SPEC-57) Define asynchronous thread behavior upon close
        of embeddable container
        Date:   Thu, 14 Jun 2012 14:39:55 +0000 (GMT+00:00)
        From:   jrbauer (JIRA) <jira-no-reply@...
<mailto:jira-no-reply@...>>
        Reply-To:       issues@...
<mailto:issues@...>
        To:     issues@...
<mailto:issues@...>



          [
http://java.net/jira/browse/EJB_SPEC-57?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=341464#action_341464
<http://java.net/jira/browse/EJB_SPEC-57?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=341464#action_341464>
        ]
        jrbauer commented on EJB_SPEC-57:
        ---------------------------------

        Section 18.2.4 (pd1) does contain some verbiage around
        shutdown requirements and expectations of the embeddable
        container.  I shied away mentioning any sort of asynch
        shutdown expectations for containers in an EE environment
        since I too couldn't find anything around this topic in the
        specs. Introducing something now would likely cause
        compatibility issues for most vendors. But, since asynch
        support will be new in the embeddable container we have an
        opportunity to introduce some commonality/predictability
        without release compatibility concerns.






            Define asynchronous thread behavior upon close of
            embeddable container
----------------------------------------------------------------------

                           Key: EJB_SPEC-57
URL: http://java.net/jira/browse/EJB_SPEC-57
                       Project: ejb-spec
                    Issue Type: Improvement
              Affects Versions: 3.2
                      Reporter: jrbauer

Issue EJB_SPEC-13 adds asynchronous method invocation to
            EJB lite, which may be implemented by an embeddable
container. The specification should define the behavior
            of the embeddable container regarding any outstanding
            asynchronous invocations upon closing the container
(EJBContainer.close()) and since close() is not required,
            exit of main within the JVM.
            Transactionally, it seems to make the most sense for
            EJBContainer.close() and JVM exit to wait for any
            outstanding asynchronous threads before exiting.  This
            provides consistent behavior, but at the risk of having
            an ill-behaved thread block the container or JVM from
            closing/exiting.


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    --     Antonio Goncalves
    Software architect and Java Champion

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[jsr345-experts] Re: EJB_SPEC-57) Define asynchronous thread behavior upon close of embeddable container]

Marina Vatkina 07/05/2012

[jsr345-experts] Re: EJB_SPEC-57) Define asynchronous thread behavior upon close of embeddable container]

Florent BENOIT 07/06/2012

[jsr345-experts] Re: EJB_SPEC-57) Define asynchronous thread behavior upon close of embeddable container]

Marina Vatkina 07/06/2012

[jsr345-experts] Re: EJB_SPEC-57) Define asynchronous thread behavior upon close of embeddable container]

Marina Vatkina 07/11/2012

[jsr345-experts] Re: EJB_SPEC-57) Define asynchronous thread behavior upon close of embeddable container]

Jean-Louis MONTEIRO 07/11/2012

[jsr345-experts] Re: EJB_SPEC-57) Define asynchronous thread behavior upon close of embeddable container]

Florent BENOIT 07/11/2012

[jsr345-experts] Re: EJB_SPEC-57) Define asynchronous thread behavior upon close of embeddable container]

Marina Vatkina 07/11/2012

[jsr345-experts] Re: EJB_SPEC-57) Define asynchronous thread behavior upon close of embeddable container]

Florent BENOIT 07/12/2012

[jsr345-experts] Re: EJB_SPEC-57) Define asynchronous thread behavior upon close of embeddable container]

Jeremy Bauer 07/11/2012

[jsr345-experts] Re: EJB_SPEC-57) Define asynchronous thread behavior upon close of embeddable container]

Marina Vatkina 07/11/2012
 
 
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