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https://issues.apache.org/activemq/browse/CAMEL-2049?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=54592#action_54592
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Claus Ibsen commented on CAMEL-2049:
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In Camel 2.0 the MinaProducer is now pooled which resolves the thread safe
issue there as only one instance is using it at any given time.
> Improper configuration of MINA connector and acceptor instances; Better
> producer
> --------------------------------------------------------------------------------
>
> Key: CAMEL-2049
> URL: https://issues.apache.org/activemq/browse/CAMEL-2049
> Project: Apache Camel
> Issue Type: Bug
> Components: camel-mina
> Affects Versions: 1.6.0
> Environment: Windows XP
> Reporter: Dmytro Rud
> Assignee: Claus Ibsen
> Attachments: MinaComponent.patch, MinaSocketProducer.java
>
>
> A sample scenario where both MINA producer(s) and consumer(s) are used in the
> same route (e.g. some kind of dispatching or proxying):
> from("mina:tcp://localhost:8888?lazySessionCreation=true&sync=true")
> .to("mina:tcp://localhost:7777?lazySessionCreation=true&sync=true");
> from("mina:tcp://localhost:7777?lazySessionCreation=true&sync=true")
> .process(/*prepare answer*/);
> Due to improper configuration of MINA acceptor and connector instances in
> MinaComponent#createSocketEndpoint(), no more than 15 incoming threads can be
> served at port 8888 -- the producer becomes unable to open an outgoing
> session. This is actually an issue of MINA, not of Camel -- a test
> application written using "raw" MINA shows the same behaviour.
> A solution is to apply configuration rules described, e.g., at
> http://mina.apache.org/configuring-thread-model.html, as done in the attached
> patch.
> Moreover, the standard Camel-MINA producer is not thread-safe -- actually a
> well-known point. A second attached file contains a thread pool-based
> reentrant version, which can be efficiently used for TCP endpoints with both
> parameters 'lazySessionCreation' and 'sync' set to true.
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