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From "Vinh Nguyen (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MUSE-270) EMPTY_DOC thread stability issues
Date Fri, 11 Jan 2008 18:32:34 GMT

    [ https://issues.apache.org/jira/browse/MUSE-270?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12558060#action_12558060
] 

Vinh Nguyen commented on MUSE-270:
----------------------------------

Hi Chris,
Sorry, aminor correction to my previous comments...I agree that this issue is likely to happen
in small-scale and single CPU boxes, too.  I still haven't been able to test your patch yet,
but as long as you removed EMPTY_DOC, I'm guessing it will work.  I will still try to test
your patch at some point.

So far, I believe this is the single most issue that prevents Muse from being 100% reliable
in production environments with regards to propogating data between backends and clients.

> 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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