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https://issues.apache.org/jira/browse/TOMEE-2044?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16042900#comment-16042900
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Lars Herschke commented on TOMEE-2044:
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I have tried master today. The Issue is still present. I have looked in the new
code and i think the differnerence is, KeepAliveServer now gets the queue of
the first initalized service. But i belief the changes in ServicePool and
KeepAliveServer are not completed. The pools-Collection from Registry must
filled in ServicePool and must be read by KeepAliveServer.
> threadPool-queue (in ServicePool) from ejbd-Service is never processed
> -----------------------------------------------------------------------
>
> Key: TOMEE-2044
> URL: https://issues.apache.org/jira/browse/TOMEE-2044
> Project: TomEE
> Issue Type: Bug
> Components: TomEE Core Server
> Affects Versions: 1.7.4
> Environment: FreeBSD 10.3-STABLE amd64
> openjdk8-8.131.11
> Reporter: Lars Herschke
> Fix For: 7.0.4
>
>
> If you have many requests to your ejbd-service the queue from the threadPool
> in ServicePool.java is filled. This queue is never processed depending on
> your server config. If you have only ejbd-service enabled and the services
> admin, ejbds and httpejbd are disabled all is fine. If you have two or more
> of these services enabled the issue could occur. The reason is the following.
> KeepAliveServer.java has the following line to get the queue.
> final ServicePool incoming =
> SystemInstance.get().getComponent(ServicePool.class);
> SystemInstance.java hold components in a HahMap with the class type as key.
> On server-startup the above named services are initalized in
> ServiceManager.manage(...). This method instances new ServicePool for this
> services. Each ServicePool-instance calls in his constructor
> SystemInstance.get().setComponent(ServicePool.class, this);.
> Every other call of setComponent replace the old entry in the components
> HashMap. So KeepAliveServer gets always the queue of the last initalized
> service.
> Workaround:
> Use only one of the four above named services
> or
> set threadsCore for your services at least as high, that the queue is never
> used.
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