Bug 321412

Description David M. Karr 2010-07-30 19:07:51 EDT

Build Identifier: 20100617-1415

I updated to Helios a couple of weeks ago.  Every once in a while I see it seeming to thrash, sometimes when I'm not doing anything.  I've watched the heap in use number cycle quickly through a couple hundred megabytes and then immediately start over again.

Today I noticed it doing this while I wasn't doing anything in Eclipse.  I looked in the log file, and I saw the following exception being continuously emitted:

java.lang.NullPointerException
	at org.eclipse.jst.jsp.core.taglib.ProjectDescription.updateJAR(ProjectDescription.java:2267)
	at org.eclipse.jst.jsp.core.taglib.ProjectDescription$Indexer.visit(ProjectDescription.java:217)
	at org.eclipse.core.internal.resources.Resource$1.visitElement(Resource.java:64)
	at org.eclipse.core.internal.watson.ElementTreeIterator.doIteration(ElementTreeIterator.java:82)
	at org.eclipse.core.internal.watson.ElementTreeIterator.doIteration(ElementTreeIterator.java:86)
	at org.eclipse.core.internal.watson.ElementTreeIterator.doIteration(ElementTreeIterator.java:86)
	at org.eclipse.core.internal.watson.ElementTreeIterator.doIteration(ElementTreeIterator.java:86)
	at org.eclipse.core.internal.watson.ElementTreeIterator.doIteration(ElementTreeIterator.java:86)
	at org.eclipse.core.internal.watson.ElementTreeIterator.iterate(ElementTreeIterator.java:127)
	at org.eclipse.core.internal.resources.Resource.accept(Resource.java:74)
	at org.eclipse.jst.jsp.core.taglib.ProjectDescription.index(ProjectDescription.java:1417)
	at org.eclipse.jst.jsp.core.taglib.ProjectDescription.restoreReferences(ProjectDescription.java:1906)
	at org.eclipse.jst.jsp.core.taglib.ProjectDescription.<init>(ProjectDescription.java:670)
	at org.eclipse.jst.jsp.core.taglib.TaglibIndex.createDescription(TaglibIndex.java:757)
	at org.eclipse.jst.jsp.core.taglib.ProjectDescription.addBuildPathReferences(ProjectDescription.java:722)
	at org.eclipse.jst.jsp.core.taglib.ProjectDescription.addBuildPathReferences(ProjectDescription.java:723)
	at org.eclipse.jst.jsp.core.taglib.ProjectDescription.resolve(ProjectDescription.java:1832)
	at org.eclipse.jst.jsp.core.taglib.TaglibIndex.internalResolve(TaglibIndex.java:938)
	at org.eclipse.jst.jsp.core.taglib.TaglibIndex.resolve(TaglibIndex.java:578)
	at org.eclipse.jst.jsp.core.internal.contentmodel.tld.TLDCMDocumentManager.getModificationStamp(TLDCMDocumentManager.java:765)
	at org.eclipse.jst.jsp.core.internal.contentmodel.tld.TLDCMDocumentManager.getCMDocument(TLDCMDocumentManager.java:705)
	at org.eclipse.jst.jsp.core.internal.contentmodel.tld.TLDCMDocumentManager$DirectiveStructuredDocumentRegionHandler.enableTags(TLDCMDocumentManager.java:121)
	at org.eclipse.jst.jsp.core.internal.contentmodel.tld.TLDCMDocumentManager$DirectiveStructuredDocumentRegionHandler.enableTaglibFromURI(TLDCMDocumentManager.java:111)
	at org.eclipse.jst.jsp.core.internal.contentmodel.tld.TLDCMDocumentManager$DirectiveStructuredDocumentRegionHandler.processTaglib(TLDCMDocumentManager.java:404)
	at org.eclipse.jst.jsp.core.internal.contentmodel.tld.TLDCMDocumentManager$DirectiveStructuredDocumentRegionHandler.processRegionCollection(TLDCMDocumentManager.java:175)
	at org.eclipse.jst.jsp.core.internal.contentmodel.tld.TLDCMDocumentManager$DirectiveStructuredDocumentRegionHandler.nodeParsed(TLDCMDocumentManager.java:191)
	at org.eclipse.wst.xml.core.internal.parser.XMLSourceParser.fireNodeParsed(XMLSourceParser.java:135)
	at org.eclipse.jst.jsp.core.internal.parser.JSPSourceParser.parseNodes(JSPSourceParser.java:296)
	at org.eclipse.wst.xml.core.internal.parser.XMLSourceParser.getDocumentRegions(XMLSourceParser.java:173)
	at org.eclipse.wst.sse.core.internal.text.StructuredDocumentReParser._core_reparse_text(StructuredDocumentReParser.java:310)
	at org.eclipse.wst.sse.core.internal.text.StructuredDocumentReParser.core_reparse(StructuredDocumentReParser.java:710)
	at org.eclipse.jst.jsp.core.internal.parser.JSPReParser.reparse(JSPReParser.java:143)
	at org.eclipse.wst.sse.core.internal.text.StructuredDocumentReParser.reparse(StructuredDocumentReParser.java:1291)
	at org.eclipse.wst.sse.core.internal.text.BasicStructuredDocument.updateModel(BasicStructuredDocument.java:2709)
	at org.eclipse.wst.sse.core.internal.text.BasicStructuredDocument.internalReplaceText(BasicStructuredDocument.java:1923)
	at org.eclipse.wst.sse.core.internal.text.BasicStructuredDocument.replaceText(BasicStructuredDocument.java:2419)
	at org.eclipse.wst.sse.core.internal.text.BasicStructuredDocument.set(BasicStructuredDocument.java:2931)
	at org.eclipse.core.internal.filebuffers.ResourceTextFileBuffer.setDocumentContent(ResourceTextFileBuffer.java:575)
	at org.eclipse.core.internal.filebuffers.ResourceTextFileBuffer.initializeFileBufferContent(ResourceTextFileBuffer.java:286)
	at org.eclipse.core.internal.filebuffers.ResourceFileBuffer.create(ResourceFileBuffer.java:245)
	at org.eclipse.core.internal.filebuffers.TextFileBufferManager.connect(TextFileBufferManager.java:112)
	at org.eclipse.wst.sse.core.internal.FileBufferModelManager.getModel(FileBufferModelManager.java:654)
	at org.eclipse.wst.sse.core.internal.model.ModelManagerImpl._doCommonGetModel(ModelManagerImpl.java:541)
	at org.eclipse.wst.sse.core.internal.model.ModelManagerImpl._commonGetModel(ModelManagerImpl.java:508)
	at org.eclipse.wst.sse.core.internal.model.ModelManagerImpl._commonGetModel(ModelManagerImpl.java:481)
	at org.eclipse.wst.sse.core.internal.model.ModelManagerImpl.getModelForRead(ModelManagerImpl.java:1410)
	at org.eclipse.jst.jsp.core.internal.java.JSPTranslatorPersister$JSPResourceVisitor.getJSPTranslator(JSPTranslatorPersister.java:358)
	at org.eclipse.jst.jsp.core.internal.java.JSPTranslatorPersister$2.run(JSPTranslatorPersister.java:284)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.jst.jsp.core.internal.java.JSPTranslatorPersister$PersisterJob.run(JSPTranslatorPersister.java:523)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)


Reproducible: Always