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https://issues.apache.org/jira/browse/XERCESJ-1687?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16273378#comment-16273378
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Michael Glavassevich edited comment on XERCESJ-1687 at 11/30/17 8:40 PM:
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Until there's a fix to the Eclipse library that Xerces can consume, I think the
only way to get around this on our side would be synchronize all access to
PsychoPath using a 'static' object for synchronization. I can imagine that
would be very bad for performance. Only one thread at a time could make
progress but at least it would work functionally.
I recall Apache BCEL has (or had) similar thread-safety issues and that was the
approach some users took to work around it.
was (Author: [email protected]):
Until there's a fix to the Eclipse library that Xerces can consume, I think the
only way to get around this on our side would be synchronize all access to
PsychoPath using a 'static' object for synchronization. I can imagine that
would be very bad for performance. Only one thread a time could make progress
but at least it would work functionally.
> XSD 1.1 validation with xs:assert is not thread safe
> ----------------------------------------------------
>
> Key: XERCESJ-1687
> URL: https://issues.apache.org/jira/browse/XERCESJ-1687
> Project: Xerces2-J
> Issue Type: Bug
> Components: XML Schema 1.1 Structures
> Affects Versions: 2.12.0
> Environment: java 8 / java 9
> Reporter: Stephan Trebels
> Priority: Critical
> Attachments: parallel-test.zip
>
>
> The XSD 1.1 validation code uses eclipse webtools xpath to validate
> assertions. The PsychoPath XPath 2.0 engine has a bug in
> ResultSequenceFactory, which invalidates correct execution in all parallel
> invocation of XSD 1.1 validation.
> This issue affects completely unrelated schemas and input XML, as long as
> both use assertions. The effect is a lot of spurious assert violations. The
> issue is visible even if only two threads are used in parallel.
> https://bugs.eclipse.org/bugs/show_bug.cgi?id=527812
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