[jboss-jira] [JBoss JIRA] (WFLY-4330) Async service with EJB pool blocks threads not used
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https://issues.jboss.org/browse/WFLY-4330?page=com.atlassian.jira.plugin....
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Janario Oliveira commented on WFLY-4330:
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Secondly, from jdoc of Thread.sleep: "Causes the currently e...
This thread.sleep is to simulate a job that take a few time to be executed, If
change to a loop that do something it will have the same problem
LocalDateTime init = LocalDateTime.now();
LocalDateTime end = init.plusSeconds(2);
while (end.isAfter(LocalDateTime.now())){
//do something and just wait
}
Thirdly. You define bean instance pool of 5, than file 15 jobs. Wh....
What is happens is even with a limited number of instances in pools it is blocking
more threads than the limit. But at the end is just blocking for nothing, it won't
process until release a new instance.
Without that there isn't advantages of use limited pool with async process, because it
will block all my thread pool.
Async service with EJB pool blocks threads not used
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Key: WFLY-4330
URL: https://issues.jboss.org/browse/WFLY-4330
Project: WildFly
Issue Type: Bug
Components: EJB
Affects Versions: 8.2.0.Final
Reporter: Janario Oliveira
Assignee: Bartosz Baranowski
Attachments: wildfly-thread-pool.zip
I've created a bean pool to limit the number of some instances. In that case maximum
5 instances.
<pools>
<bean-instance-pools>
<strict-max-pool name="slsb-max5" max-pool-size="5"
instance-acquisition-timeout="5"
instance-acquisition-timeout-unit="MINUTES"/>
...
</bean-instance-pools>
</pools>
The idea was to have some async service that work simultaneous.
@Stateless
@Pool("slsb-max5")
public class AsyncService {
@Asynchronous
public Future<LocalDateTime> async2Seconds() {
//some parallel work...
}
}
The problem is when I invoke simultaneous more than 5 times it blocks the threads even it
is not using (async thread-pool-name="default", default=10)
Attached an example project (configure slsb-max5 pool and access
/test-thread-pool/rest/async-resource)
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