[jira] [Commented] (FOP-2970) Exception when loading the config

    [ https://issues.apache.org/jira/browse/FOP-2970?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18059255#comment-18059255 ] 

Michael Kainzbauer commented on FOP-2970:
-----------------------------------------

We are also running into this every 30.000 runs in average.

> Exception when loading the config
> ---------------------------------
>
>                 Key: FOP-2970
>                 URL: https://issues.apache.org/jira/browse/FOP-2970
>             Project: FOP
>          Issue Type: Bug
>            Reporter: zouari
>            Priority: Major
>         Attachments: fop-2970_hack.txt
>
>
> Starting with FOP 2.4 the avalon framework is not used anymore.
> Instead, a Configuration implementation has been added to the FOP: org.apache.fop.configuration.DefaultConfiguration
> this new implementation uses the library "xercesImpl-2.11.0.jar" (not thread-safe ).
> In multithreaded applications, I have the following exception:
> {code:java}
> Caused by: java.lang.NullPointerException
>     at org.apache.xerces.dom.ParentNode.nodeListItem(Unknown Source) 
>     at org.apache.xerces.dom.ParentNode.item(Unknown Source) 
>     at org.apache.fop.configuration.DefaultConfiguration.getChild(DefaultConfiguration.java:113) 
>     at org.apache.fop.apps.FOUserAgent.getRendererConfiguration(FOUserAgent.java:696) 
>     at org.apache.fop.apps.FOUserAgent.getRendererConfig(FOUserAgent.java:673) 
>     at org.apache.fop.render.PrintRendererConfigurator.getRendererConfig(PrintRendererConfigurator.java:91) 
>     at org.apache.fop.render.PrintRendererConfigurator.getCustomFontCollection(PrintRendererConfigurator.java:147) 
>     at org.apache.fop.render.PrintRendererConfigurator.setupFontInfo(PrintRendererConfigurator.java:127) 
>     at org.apache.fop.render.intermediate.IFUtil.setupFonts(IFUtil.java:170) 
>     at org.apache.fop.render.intermediate.IFRenderer.setupFontInfo(IFRenderer.java:187) 
>     at org.apache.fop.area.RenderPagesModel.<init>(RenderPagesModel.java:79) 
>     at org.apache.fop.area.AreaTreeHandler.setupModel(AreaTreeHandler.java:150) 
>     at org.apache.fop.area.AreaTreeHandler.<init>(AreaTreeHandler.java:113) 
>     at org.apache.fop.area.AreaTreeHandler.<init>(AreaTreeHandler.java:132) 
>     at org.apache.fop.layoutmgr.PageSequenceLayoutManager.<init>(PageSequenceLayoutManager.java:136) 
>     at org.apache.fop.layoutmgr.LayoutManagerMapping.makePageSequenceLayoutManager(LayoutManagerMapping.java:205) 
>     at org.apache.fop.area.AreaTreeHandler.endPageSequence(AreaTreeHandler.java:290) 
>     at org.apache.fop.fo.pagination.PageSequence.endOfNode(PageSequence.java:158) 
>     at org.apache.fop.fo.FOTreeBuilder$MainFOHandler.endElement(FOTreeBuilder.java:362) 
>     at org.apache.fop.fo.FOTreeBuilder.endElement(FOTreeBuilder.java:190) 
>     at org.apache.xalan.transformer.TransformerIdentityImpl.endElement(TransformerIdentityImpl.java:1102) 
>     at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source) 
>     at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source) 
>     at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source) 
>     at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source) 
>     at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) 
>     at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) 
>     at org.apache.xerces.parsers.XMLParser.parse(Unknown Source) 
>     at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) 
>     at org.apache.xalan.transformer.TransformerIdentityImpl.transform(TransformerIdentityImpl.java:485) 
> {code}



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