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From "Chris Twiner (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MUSE-270) EMPTY_DOC thread stability issues
Date Fri, 11 Jan 2008 12:58:33 GMT

    [ https://issues.apache.org/jira/browse/MUSE-270?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12557975#action_12557975
] 

Chris Twiner commented on MUSE-270:
-----------------------------------

Hi Vinh, 

Could you please try the patched muse.jar and the test cases I attached mid october to see
if they solve this issue (I got rid of EMPTY_DOC and the nodeList issue).  I still however
don't have access to an smp or multi-core computer on which to test this out.

As of yet I have had zero feedback on the patch, please note that this still occurs on a single
threaded cpu / system.  The test case I posted runs on a single cpu and attempts to prove/fix
the threading issues regarding EMPTY_DOC.  Its not really a concern of mine if my solution
is chosen as workable, just that its proven correct / incorrect and is discussed.  So far
since no discussion has taken place on it I have no idea if it truly works. 

This must be solved for muse to be used seriously in any production environment.

> EMPTY_DOC thread stability issues
> ---------------------------------
>
>                 Key: MUSE-270
>                 URL: https://issues.apache.org/jira/browse/MUSE-270
>             Project: Muse
>          Issue Type: Bug
>          Components: Utilities - General, QName, and XML, WS-Addressing and SOAP
>    Affects Versions: 2.0.0 M1, 2.0.0 M2, 2.0.0, 2.1.0, 2.2.0, 2.3.0
>         Environment: Impacts all platforms and configurations
>            Reporter: Rich Lucente
>            Assignee: Dan Jemiolo
>             Fix For: 2.3.0
>
>         Attachments: epr-tests.zip, MuseThreadSafety.zip, WsnErrorsTest.zip
>
>
> This bug is being opened to track the EMPTY_DOC thread stability issue currently being
discussed on the muse-dev mailing list.  XmlUtils provides EMPTY_DOC as a scratchpad instance
of a DOM Document for creation of elements.  This has been shown to cause exceptions in a
multi-threaded environment.  The issue is compounded by the widespread use of EMPTY_DOC in
the code due to its convenience and the reduction in object creation when constructing XML
fragments.

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