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http://jira.codehaus.org/browse/XFIRE-1001?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_98568
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Jimmy Van Broeck commented on XFIRE-1001:
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I've got the same problem, but even with a greater consequence.
Sometimes a thread was in a looped state, because of this and ate all the
resources of my server.
In some cases the Stax parser came in a bad state and went into an endless
loop. (middle of the document and fscannerstate on 7 (Start_document)
Problems lays in the factory.createXMLStreamReader. This function resets the
inputstream and the streamreader. One of the things is that it resets the
scannerstate to 7 and here it the problem.
So i made the createXMLStreamReader synchronized and the problem is gone.
> Concurrency issue in StaxUtils.createXMLStreamReader
> ----------------------------------------------------
>
> Key: XFIRE-1001
> URL: http://jira.codehaus.org/browse/XFIRE-1001
> Project: XFire
> Issue Type: Bug
> Components: Core
> Affects Versions: 1.2.6
> Environment: Windows XP, Java 5 update 9
> Reporter: Walter Seymore
> Assignee: Dan Diephouse
> Fix For: 1.2.7
>
> Attachments: HelloWorldClient.java, HelloWorldService.java
>
>
> I've created a simple HelloWorld service that echoes a name back to the
> client. This works fine until i create 2 or more threads that calls the
> service at the same time. Every now and then, I get an XML parsing error. The
> content of the request is always correct however and making this small change
> to StaxUtils fixes the issue.
> 759 synchronized(factory) {
> 760 return factory.createXMLStreamReader(in, encoding);
> 761 }
> So this would indicate that it is not safe to use the same XMLInputFactory
> instance in a multi-threaded way. Obviously synchronisation is not an optimal
> solution, but hopefully you guys can think of something better :).
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