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From "DaLi Liu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ODFTOOLKIT-201) HashMap leads to endless loop in OdfXMLFactory.
Date Tue, 25 Sep 2012 03:00:08 GMT

    [ https://issues.apache.org/jira/browse/ODFTOOLKIT-201?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13462390#comment-13462390
] 

DaLi Liu commented on ODFTOOLKIT-201:
-------------------------------------

Verified status of this issue
2.not sure - I am not sure about this issue, maybe still need to be opened

In issue ODFTOOLKIT-198 Some threads hang if openning a document with multiple threads
It also said: "If a document is openning with ODFDOM by multiple threads, some threads hang.
By looking into the stack, the problem is caused by HashMap used in concurrent environment."
                
> HashMap leads to endless loop in OdfXMLFactory.
> -----------------------------------------------
>
>                 Key: ODFTOOLKIT-201
>                 URL: https://issues.apache.org/jira/browse/ODFTOOLKIT-201
>             Project: ODF Toolkit
>          Issue Type: Bug
>          Components: java
>    Affects Versions: 0.8.7
>         Environment: Operating System: Windows
> Platform: PC
>            Reporter: devin
>            Assignee: issues
>             Fix For: 0.8.7
>
>
> Load two documents concurrently may run into endless loops again and again. The reason
seems to be a corruption of the HashMap mElementTypes in the Class OdfXMLFactory, which causes
the call classCache.get(odfName) to infinitely loop within line 303 of HashMap. 
> We will consider using ConcurrentHashMap to replace HashMap if necessary.
> BTW: setOdfElementClass and setOdfAttributeClass are not used. I think we need to improve
it.
> Thanks Colin discovered and reported this bug.
> Devin

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