[cdi-dev] [JBoss JIRA] (CDI-710) Require default event ExecutorService to be managed on Java EE

Matej Novotny (JIRA) issues at jboss.org
Mon Aug 14 09:25:00 EDT 2017

    [ https://issues.jboss.org/browse/CDI-710?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13448487#comment-13448487 ] 

Matej Novotny commented on CDI-710:

[~meetoblivion] I agree that {{ForkJoinPool.commonPool()}} is a weird choice for EE environment. But that's not really a reason for enforcing a default one, is it? Leaving it up to integrator works just as well plus it can be tweaked and optimized. 

I wonder if OWB default choice isn't more like an "absolutely last resort" if you fail to specify other executor?

[~rmannibucau] I think this ticket is more EE-oriented and what you describe are options for standalone mode (SE?), right? But then again, in SE, you would be probably just fine with {{ForkJoinPool}} not to mention you still can use your own tweaked executor and use {{NotificationOptions}} to enforce it. I don't really see the big problem there and I think calling the API "abusive" is a bit harsh and misplaced.

> Require default event ExecutorService to be managed on Java EE
> --------------------------------------------------------------
>                 Key: CDI-710
>                 URL: https://issues.jboss.org/browse/CDI-710
>             Project: CDI Specification Issues
>          Issue Type: Feature Request
>          Components: Events
>            Reporter: Guillermo González de Agüero
> When running on a Java EE environment, CDI should use a managed executor service by default for asynchronous operations.
> This is already required by the JAX-RS 2.1 spec (http://download.oracle.com/otndocs/jcp/jaxrs-2_1-pfd-spec/index.html), section 5.8:
> {quote}In an environment that supports the Concurrency Utilities for Java EE [13], such as the Java EE Full Profile, implementations MUST use ManagedExecutorService and ManagedScheduledExecutorService, respectively. The reader is referred to the Javadoc of ClientBuilder for more information about executor services.{quote}
> Containers will presumably offer monitoring features and thread pool configuration options for managed executor services.

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